This is the generic class for:
A. Forming the likeness of an object, or an instrumented or discernible phenomenon, in a chemically defined receiver or in a receiver wherein radiation produces a chemical reaction, by use of radiation.
B. Finishing the image formed by (A) with post imaging processing.
C. Finishing an image by chemical processing regardless how formed.
D. A radiation sensitive receiver, composition, or product disclosed (claimed) solely for radiation imagery chemistry, and process of making same.
E. A nonradiation sensitive-receiver, composition, or product (disclosed or claimed for receiving an image from a radiation sensitive product) and disclosed (claimed) solely for radiation imagery chemistry, and process of making same.
F. An imaged product by a process of A, B, or C above or employing a receiver, composition, or product of D or E above.
(1) Note. The meaning to be given to the various "art" terms appearing in this class, but which have not been included in the Glossary below, is the same as that generally accepted or in common usage. However, certain terms employed in this class, which are included below, have been assigned definitions tailored to meet the needs of this class and therefore those may be more restricted or less limited or even altogether different from those in common usage.

LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
A. COMPOUND, COMPOSITION, AND MATERIAL CLASSES.
1. A compound, per se, is classified in a compound class regardless of utility. (See References to Other Classes, below, for related art areas)
2. Composition or Material
a. The rules for determining Class placement of the Original Reference (OR) for claimed chemical compositions are set
forth in the Class Definition of Class 252 in the section LINES WITH OTHER CLASSES AND WITHIN THIS CLASS, subsection COMPOSITION CLASS SUPERIORITY, which includes a hierarchical ORDER OF SUPERIORITY FOR COMPOSITION CLASSES.
b. A composition disclosed for forming an image by a Class 430 process as one of plural uses but is not claimed as having a Class 430 imaging use is placed as an original in another class based on its general utility and crossed to Class 430. See References to Other Classes below, for related art areas: chemistry: electrical and wave energy; compositions; and synthetic resin classes
c. A composition which is not an imaging composition but which is disclosed or claimed as useful as a part of a Class 430 product is classified in Class 430 only when claimed in conjunction with a Class 430, imaging composition or layer. Otherwise such composition, per se, is classified on some other basis depending on its ingredients or function. See References to Other classes, below for related art areas: specialized metallurgical process; compositions, coating or plastic; composiitions; synthetic resins or natural rubbers; organic coupounds.
d. A composition solely disclosed or claimed for radiation imagery is classified in Class 430.
e. For a general search of Composition or Material classes, see References to Other Classes, below.
B. LINES WITH AND SEARCH NOTES TO ARTICLES OR PRODUCT CLASSES.
1. As a general rule, a product (article) is classified with the class specifically providing for the same or a generic class which can take the same.
2. Class 430, Radiation Imagery Chemistry: Process, Compositions, or Product Thereof, provides for a product (article) which is (a) imaged and defined by its composition, (b) radiation sensitive and limited by claims or disclosure for use in radiation imagery, and (c) products of radiation imagery not elsewhere classified.
3. An article or product defined by section 2 combined with significant structure for another class will be classified in the class providing for the structure and crossed to Class 430.
4. Cases involving multiple claimed subject matter, i.e., claims for both Class 430 and class(es) mentioned in section 3 will be classified in Class 430 and crossed to the other class(es). See References to Other Classes, below.
C. LINES WITH AND SEARCH NOTES TO PROCESS AND APPARATUS CLASSES.
1. General Relation With Process And Apparatus Classes.
Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, is the residual class for forming an image by use of radiation or finishing such image by post imaging treatment, and the process of making a composition or product solely disclosed or claimed for use in radiation imagery.
Also see References to Other Classes, below.
2. Relation With Special Classes Involving Radiation Imagery.
(a) As a general rule the below listed classes referencing this section provide for: apparatus, per se; apparatus with chemical material; process of operating the apparatus; and nonchemical process. (b) Cases involving multiple claimed subject matter, i.e., claims for both Class 430 and class(es) hereinafter stated will be classified in Class 430 and crossed to the other class(es).
D. LINES AND SEARCH NOTES TO SPECIAL CLASSES.
See References to Other Classes, below.

REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers, for radiation sensitive dye compositions of general utility. (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes, Composition or Material, general search.)
8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers, 73 for after-treatment of dyed material; subclasses 81+ for dye recovery; subclasses 101+ for bleaching, especially subclass 103 for bleaching using wave energy; subclasses 442 and 446+ for textile printing involving use of a resist in finishing a design; subclass 444 for dyeing process or composition involving wave energy; and Digest 12 for wave energy treatment of textiles. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
8, Bleaching and Dyeing Fluid Treatment and Chemical Modification of Textiles and Fibers, subclass 440 for bleaching using wave energy; subclasses 442 and 446+, for textile printing involving use of a resist in finishing a design; subclass 444 for dyeing process or composition involving wave energy; subclasses 489-493 for aftertreatment of a dyed material; and Digest 12, for wave energy treatment of textiles. Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, provides for (a)
forming an image using radiation involving a dyeing or bleaching procedure, (b) finishing an image (using a dyeing or bleaching procedure), (c) a combination of (a) and (b), (d) compositions limited by disclosure or claim to use in radiation imagery described under (a) and (b) above, and (e) recovery of dye or bleach when combined with radiation imagery processes. (See Lines With Other Classes, Lines and search notes to special classes.)
15, Brushing, Scrubbing, and General Cleaning, 1.51 for electrostatic cleaning; and appropriate subclasses for general cleaning. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
29, Metal Working, 33 for plural diverse manufacturing apparatus including metal shaping or assembly of a printing plate; subclasses 592.1+ for process of mechanical manufacture of electrical devices. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
34, Drying and Gas or Vapor Contact With Solids, 266 for process involving selected radiation energy and subject matter of the class; and subclasses 444+ for process of gas or vapor contact with sheets, webs, or strands. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
34, Drying and Gas or Vapor Contact With Solids, provides for the process of drying or gas or vapor contact with solids, per se, when so treating a product of this class (430). Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, provides for the combination of a Class 430 step(s) and drying or gas or vapor contact with a product of Class 430. (See Lines With Other Classes, Lines and search notes to special classes.)
40, Card, Picture, or Sign Exhibiting, appropriate subclasses for subject matter of that class having images. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
40, Card, Picture, or Sign Exhibiting, 447 for changing exhibitor with alphanumeric device; especially subclass 448 for liquid crystal; subclasses 542+ for illuminated sign luminescent type; and subclasses 625+ for permanent identification devices. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
65, Glass Manufacturing, appropriate subclasses for radiation imagery combined with glass working; and Digest 2 for photosensitive glass. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
68, Textiles: Fluid Treating Apparatus, appropriate subclasses for fluid treating sheet and web textile material. (See Lines With Other Classes, "General Relation With Process
And Apparatus Classes" above)
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, for metal and alloys useful as a backing for radiation sensitive compositions, e.g., photoresists, etc. (See Lines With Other Classes, "Lines With And Search Notes To Compound, Composition, And Material Classes, Composition or Material, c.".)
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, 122 for alloy compositions. (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes, Composition or Material, general search).
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, subclass 118 for hydro-metallurgy for obtaining silver from photos:graphic materials. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
101, Printing, 127 for stencils; subclasses 463.1+ for printing plates; and subclass 40 for blanks. But Class 430 provides for printing plates having radiation sensitive material. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
101, Printing, for stencils, printing plates, and blanks made by a Class 430 process or such products chemically defined with apparatus structure for Class 101. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
101, Printing, provides for (a) the process of making a printing surface which is more than a Class 430 process or (b) more than a mere use of a surface made by a Class 430 process, and (c) stencils, blanks, and printing surfaces made by a Class 430 process but having structure for Class 101. Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, provides for process of (1) making printing surfaces, e.g., stencil, stencil lithos:graphic plate, blanks, planos:graphic and relief plates, etc., which (a) involves the use of radiation imagery, or (b) the finishing (post imaging processing, e.g., developing, etc.) of the image formed by (1a) including the mere application of ink to the surface or printing; (2) the combination of (1a) or (1b) having the step of mere application of ink and printing the ink on a receptor surface, and product for printing which is (a) made using a Class 430 process wherein it is defined by its chemical composition and (b) radiation sensitive wherein it is to be used in a Class 430 process. (See Lines With Other Classes, Lines and search notes to special classes.)
106, Compositions: Coating or Plastic, for compositions therein provided not containing a synthetic resin, 168.01 for cellulose ester or salt thereof and 172.1+ for cellulose ether or salt thereof. (See Lines With Other Classes, "Lines With And Search Notes To Compound, Composition, And Material classes, Composition or Material, c.")
106, Compositions: Coating or Plastic, for coating or plastic compositions disclosed for use with radiation imagery and other arts. (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes, Composition or Material, general search).
106, Compositions: Coating or Plastic, 1.05 for metal depositing compositions or substrate, sensitizing compositions for metal depositing compositions; subclass 2 for coating repellent compositions; subclass 14.5 for nonradiation sensitive hectos:graphic or copying compositions; subclass 160.1 for gelatin, glue, or derivative compositions; and subclasses 400+ for pigments; fillers, or aggregates. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
134, Cleaning and Liquid Contact With Solids, subclass 1 for process of cleaning including application of electrical, radiant, or wave energy to work; subclass 3 for chemical stripping a radiation sensitive material from a base; subclass 9 for cleaning longitudinally travelling work, of bar, strip, strand, sheet, or web; and subclass 64 for the corresponding apparatus. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
137, Fluid Handling, appropriate subclasses for fluid handling systems. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
148, Metal Treatment, 31 for products of the class in the form of stock, especially subclasses 33+ for nonferrous barrier layer material, p-n type. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
148, Metal Treatment, 100 for treating magnetic materials; and subclasses 240+ for processes of coating solid metal with a material that reacts therewith. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
156, Adhesive Bonding and Miscellaneous Chemical Manufacture, subclass 58 for contour or profile photography to reproduce three-dimensional objects; subclass 59 for producing relief or intaglio representations of three-dimensional objects (e.g., relief modeling of photographs); subclass 108 for mounting transparent lamina over window opening (e.g., slide-mounting); subclasses 230+ for direct contact transfer of adhered lamina from carrier to base; subclass 246 for
surface bonding or assembly therefor involving lamina formation by molding or casting on a temporary planar support, e.g., film casting; subclass 247 for stripping of adhered lamina; subclasses 272.2+ for process involving direct application of electrical or radiant energy to work. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
162, Paper Making and Fiber Liberation, 101 for products of that class disclosed for use in radiation imagery. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
162, Paper Making and Fiber Liberation, subclass 134 for paper making with printing or variegated coloring; subclasses 135+ for paper making and coating after drying; subclass 138 for electrical or magnetic product characteristic; subclass 193 for lead strip forming; and subclass 197 for paper making with stretching, tensioning, decurling, flexing, or breaking. (See Lines With Other Classes, "General Relation With Process And Apparatus Classes" above)
164, Metal Founding, 2 for printing plate forming. (See Lines With Other Classes, Lines With And Search Notes To Process And Apparatus Classes, General Relation With Process And Apparatus Classes.)
178, Telegraphy, 111 for sensitized and chemically prepared tapes adapted to receive or transmit a record. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
178, Telegraphy, subclass 15 for automatic photos:graphic recorder system; subclass 90 for photos:graphic code recorder receiver; and subclass 94 for pyros:graphic code recorder receiver. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
181, Acoustics, appropriate subclasses for sound generators. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
204, Chemistry: Electrical and Wave Energy, appropriate subclasses for processes and synthetic resins or other products solely disclosed as made by a Class 204 process (except for (1) products which contain two or more contiguous metallic layers and (2) products of processes classifiable in 157.15 and 450+.) (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
204, Chemistry: Electrical and Wave Energy, appropriate subclasses for a composition which is resinifiable or polymerizable under the influence of radiation and is of general utility or is not disclosed as useful for imaging.
(See Lines With Other Classes, "Compound, Composition and material classes, Composition or Material, b.," above)
204, Chemistry: Electrical and Wave Energy, appropriate subclasses for a composition produced by a 204 process (except for (1) products which contain two or more contiguous metallic layers and (2) products of processes classifiable in 157.15 and 450+). A patent containing claims or disclosure to both an imagery and nonimagery use will be classified as an original in Class 204 and cross-referenced to Class 430. (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes, Composition or Material, general search).
204, Chemistry: Electrical and Wave Energy, appropriate subclasses for products solely disclosed as made by a Class 204 process (except for (1) products which contain two or more contiguous metallic layers and (2) products of processes classifiable in 157.15 and 450+). (See Lines With Other Classes, Lines with and search notes to articles or product classes.)
204, Chemistry: Electrical and Wave Energy, 157.15 for chemical reactions brought about by wave energy; subclasses 164+ for chemical production of compounds or elements by using an electrostatic field or electrical discharge; subclasses 450+ for electrophoretic or electro-osmotic processes, especially subclasses 471+ for electrophoretic or electro-osmotic coating or forming of an object; subclasses 292+ for metallic electrode compositions useful in an electrolytic apparatus; and subclasses 600+ for electrophoretic or electro-osmotic apparatus, especially subclasses 622+ for apparatus used for electrophoretic or electro-osmotic coating or forming of an object. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
204, Chemistry: Electrical and Wave Energy, provides for the combination of Class 430 subject matter and Class 204 subject matter, especially when the Class 204 subject matter does more than ordinarily perfect the post imaging processing. Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, provides for electrophoretic imaging, electrostatic image transfer and electrolysis imaging. (See Lines With Other Classes, Lines and search notes to special classes.)
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, appropriate subclasses for electrolytic processes and products produced thereby (especially subclass 50 ) in which the products are solely disclosed as made by a Class 205 process (except for (1) products which contain two or more contiguous metallic layers and (2) products of processes classifiable in subclasses 640+). (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, appropriate subclasses for electrolytic processes and products produced thereby (especially subclass 50 ) in which the products are solely disclosed as made by a Class 205 process (except for (1) products which contain two or more contiguous metallic layers and (2) products of processes classifiable in subclasses 640+). (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes, Composition or Material, general search).
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, appropriate subclasses for products produced by electrolytic processes (especially subclass 50 ) in which the products are solely disclosed as made by a Class 205 process (except for (1) products which contain two or more contiguous metallic layers and (2) products of processes classifiable in subclasses 640+). (See Lines With Other Classes, Lines with and search notes to articles or product classes.)
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions, 52 for electrolytic marking, subclasses 67+ for electro-forming, subclass 68 for recording device, subclass 69 for printing plate or electrotype, subclass 72 for ornamental article, subclasses 118+ for coating selected area, subclasses 120+ for design or ornamental article, subclass 127 for printing member. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
206, Special Receptacle or Package, 316.1 for an container optical or photos:graphic means; subclasses 454+ for a container for fragile or sensitive type i.e., photo film or plate, specimen, or sheet slide, etc.; subclasses 484+ for laminate or photo slide, etc.; subclasses 524.1+ for package or special receptacle with specified material for the container or content, and subclass 578 for combined or convertible type assemblage kit for photography. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
210, Liquid Purification or Separation, appropriate subclasses for process and apparatus of treating a liquid to render the same pure. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
216, Etching a Substrate: Processes, for disclosure (nonclaimed) of forming an image by radiation imagery and involving a claimed post imaging etching process. (Lines and search notes to special classes.)
219, Electric Heating, 600 for inductive heating, subclasses 678+ for microwave heating, and subclasses 764+ for
capacitive dielectric heating. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
222, Dispensing, 92 for dispensing collapsible wall-type containers; and Digest 1 for xerography. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
242, Winding, Tensioning, or Guiding, 430 for composite article winding made particular by the process or apparatus by which elongated material is placed on a core to form a composite article, and subclasses 470+ for strand winding, and subclasses 520+ for convolute winding. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
250, Radiant Energy, for nonchemically defined radiation sensitive product or a chemically defined product having significant apparatus structure; and 475.1 for photos:graphic type products adapted to be used with invisible radiation. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
250, Radiant Energy, for (a) forming an image using invisible radiation wherein neither a chemical reaction nor a chemically defined radiation sensitive receiver is involved, and (b) finishing (postimaging processing) the image by a nonchemical operation. subclass 271 for coded record and receiver; subclass 315.1 for source with charged plate-type detector; subclasses 316.1+ for infrared or thermal recording with photos:graphic detector; subclasses 324+ for corona irradiation; subclasses 330+ for infrared-to-visible imaging; subclasses 423+ for ion generation; subclasses 458+ for luminophor irradiation; subclasses 472+ for devices other than electrical responsive to invisible radiation, especially subclass 473 for methods; subclass 475.1 for photos:graphic type; subclasses 483+ for luminescent device; subclasses 492.1+ for irradiation of object or material; subclasses 493+ for radiant energy generation; and subclasses 505+ for radiation controlling means. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
250, Radiant Energy, provides for (a) forming an image using invisible radiation wherein neither a chemical reaction nor a chemically specified receiver is involved, (b) finishing (post imaging processing) the image by nonchemical processing (operation of machine), and (c) a nonchemically defined product or a chemically defined product having significant apparatus structure. (See Lines With Other Classes, Lines and search notes to special classes.)
252, Compositions, subclass 182.11 and 364 for chemical agents or materials and solvents which are not solely disclosed or claimed for treating images in a Class 430
process. (See Lines With Other Classes, "Lines With And Search Notes To Compound, Composition, And Material Classes, Composition or Material, b." above)
252, Compositions, 582 for optical filter compositions which may be useful as a component of a radiation sensitive element. (See Lines With Other Classes, "Lines With And Search Notes To Compound, Composition, And Material Classes, Composition or Material, c." above)
252, Compositions, for radiation affected compositions whose use are not limited to radiation imagery by claims or disclosures and not provided by a Class 204 process. subclass 600 is the residual subclass for radiation compositions not containing a synthetic resin for which see Class 520. (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes, Composition or Material, general search).
252, Composition, appropriate subclasses for the process of making hereinafter named radiation affecting compositions (not limited by claim or disclosure for use in radiation imagery chemistry); 62.3 for barrier layer device; subclasses 62.51+ for magnetic; subclass 62.9 for piezoelectric; subclasses 63+ for dielectric or electrically insulating; subclasses 79.1+ for etching or brightening; subclass 88 for sweeping or dust particle adherent; subclasses 299.01+ for liquid crystal; subclasses 582+ for optical filter; subclasses 301.16+ for organic luminescent material containing; subclass 301.36 for inorganic luminescent composition with organic nonluminescent material; subclasses 301.4+ for inorganic luminescent; subclass 478 for X-ray or neutron shield; subclasses 500+ for electrically conductive or emissive, especially 501.1 for light sensitive type; and subclass 600 for radiation sensitive. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
252, Compositions, provides for the hereinafter named radiation affecting compositions not limited by claim or disclosure for use in radiation imagery, 62.3 for barrier layer device; subclass 62.51 for magnetic; subclass 62.9 for piezoelectric; subclasses 63+ for dielectric or electrically insulating; subclasses 79.1+ for etching or brightening; subclasses 88.1 and 88.2 for dust suppressant or particle adherent compositions, respectively; subclasses 299.01+ for liquid crystal; subclass 301.16 for organic luminescent material containing; subclass 301.36 for inorganic luminescent composition with organic nonluminescent material; subclasses 301.4+ for inorganic luminescent; subclass 478 for X-ray or neutron shield; subclasses 500+ for electrically conductive or emissive, especially subclass 501.1 for light sensitive type; subclasses 582+ for optical filter; and subclass 600 for residual place for radiation sensitive composition. Dual disclosures {radiation sensitive composition for use with radiation imagery and other use(s)}
except those containing a synthetic resin (see Class 520) will be classified in Class 252 and cross-referenced to Class 430. (See Lines With Other Classes, Lines and search notes to special classes.)
257, Active Solid-State Devices (e.g., Transistors, Solid-State Diodes), subclass 10, 11, 21, 53-56, 72, 113-118, 184-189, 225-234, 257, 258, 290-294, and 414+ for radiation responsive active semiconductor devices. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
260, Chemistry of Carbon Compounds, for an organic compound having a Class 430 utility. This portion of Class 260 is being reclassified into the 530-570 series of Classes. See the search notes below. (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes.)
260, Chemistry of Carbon Compounds, for processes of making an organic compound having a Class 430 utility and the product of such a process. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, subclass 21 for shaping or treating luminescent material. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
283, Printed Matter, appropriate subclasses for subject matter of that class in the form of an image. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
313, Electrical Lamp and Discharge Devices, subclass 153 for device having means for generating a magnetic field; subclass 329 for mosaic electrode; subclasses 359.1+ for device with positive or negative ion acceleration; subclasses 483+ for device with luminescent solid or liquid material, especially subclasses 498+ for solid-state type; and subclasses 523+ for photosensitive device. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
343, Communications: Radio Wave, subclass 17 for means to produce an image from radio waves. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
346, Recorders, for a nonchemically defined radiation sensitive record receiver used in a Class 346 recorder and a chemically defined radiation sensitive record receiver having significant Class 346 apparatus structure. 134 for a laminated, impregnated, or coated record receiver having structure provided for in Class 346. (See Lines With Other
Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
346, Recorders, for forming a record of movement or phenomenon not involving a chemical reaction or a chemically defined radiation sensitive receiver and a recording apparatus having chemical material. 2 for phenomenal apparatus and process recording; subclass 74.2 for magnetic pictorial or s:graphic means; subclass 76.1 for pyros:graphic and thermochemical means; subclass 107.1 for recorder with photosensitive record receiver; and subclasses 150.1+ for electric recording (apparatus and process). (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
346, Recorders, for (a) forming a record of movement or phenomenon not involving a chemical reaction or a chemically defined radiation sensitive receiver, (b) a nonchemically defined radiation sensitive record receiver used in Class 346, Recorder, (c) a chemically defined radiation sensitive receiver having significant Class 346 apparatus structure, and (d) recording apparatus with chemical composition. A patent disclosing (claiming both (a) above and forming an image record involving a chemical reaction a chemically defined radiation sensitive receiver, or (b) a chemically defined radiation sensitive record receiver will be classified in Class 430 and cross-referenced to Class 346. A patent claiming (c) or (d) will be classified in Class 346 and crossed to Class 430. When subject matter of both classes is presented in the same patent, Class 430 is considered superior. (See Lines With Other Classes, Lines and search notes to special classes.)
347, Incremental Printing of Symbolic Information, 112 for electrostatic marking, particularly subclasses 129+ for photo scanning by beam of charged particles or light, subclasses 171+ for thermal marking, and subclasses 224+ for light or beam marking apparatus or processes. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
348, Television, 32 for pseudo color; subclasses 40+ for holography; subclasses 739 + for image reproducer, especially subclasses 755, 764, and 770+ for deformation medium having specific composition. Also cross-reference art collection 902 for photochromic. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
351, Optics: Eye Examining, Vision Testing and Correcting, 163 for ophthalmic lenses or blanks with filtering means. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
352, Optics: Motion Pictures, 232 for motion picture
carrier, per se, or having cooperating apparatus structure (see search notes thereunder). (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
352, Optics: Motion Pictures, for process not involving a chemical reaction or a chemically defined radiation receiver for recording and exhibiting motion pictures, using motion pictures and of nonchemical treating and working a motion picture carrier. subclass 5 for producing or reproducing motion pictures with synchronized sound; and subclasses 38+ for motion picture process not having sound accompaniment. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
353, Optics, Image Projectors, subclass 84 for color filters; and subclass 120 for picture carrier. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
353, Optics: Image Projectors, 30 for projector for composite image; and subclass 120 for process involving the class subject matter. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
355, Photocopying, appropriate subclasses for copies produced or used by subject matter of the class and 122 for frame structure. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
355, Photocopying, for the generic locus for apparatus (per se, or significant apparatus combined with chemical material) and process (not involving a chemical reaction or a chemically defined radiation receiver) for photos:graphically copying, certain nonchemical combinations, subcombinations, and perfecting features pertaining to same, e.g., film developing, holders for original or photosensitive paper, etc. Search subclass 2 for holos:graphic copying; subclasses 3+ for electric photos:graphic apparatus and process of copying; subclasses 18+ for projecting printing and copying camera; subclass 77 for the related process; subclasses 78+ for contact printing copying; subclass 132 for the related process; and subclasses 122+ for frame structure. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
358, Facsimile and Static Presentation Processing, 1.1 for data processing for presentation on fixed medium (e.g., paper), subclasses 500+ for natural color facsimile; subclasses 296+ for recording apparatus, especially subclass 289 for halftone; subclass 300 for electrostatic; subclass 301 for magnetic; and subclass 303 for photos:graphic. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process
and apparatus classes.)
359, Optics: Systems (Including Communication) and Elements, 478 for relief illusion device; subclasses 885+ for nonchemically defined filter; subclass 893 for screen or mask; subclasses 36+ for elements using liquid crystal material; subclasses 1+ for holos:graphic element; and subclasses 483+ for polarizers. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
359, Optics: Systems (Including Communication) and Elements, 1 for holos:graphic systems; subclasses 36+ for apparatus utilizing a liquid crystal material; and subclasses 290+ for device for controlling light by changing optical or physical properties of a light control surface or interface and subclass 900 for a cross-reference art collection of optical methods. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
360, Dynamic Magnetic Information Storage or Retrieval, 131 for record medium, especially subclass 134 for tape; subclass 135 for disk; and subclass 136 for drum. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
360, Dynamic Magnetic Information Storage or Retrieval, for general dynamic magnetic recording or reproducing which includes specific structure of a record carrier. 1 for recording or reproducing from an element of diverse utility, especially subclass 3 for motion picture film; subclass 15 for record copying; subclasses 55+ for general recording or reproducing; and subclass 59 for thermomagnetic. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
361, Electricity: Electrical Systems and Devices, 225 for electric charging of objects or materials. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
362, Illumination, subclass 2 for daylight lighting including selective wavelength modifier; subclasses 3+ for photos:graphic lighting; subclass 34 for chemiluminescent lighting; subclass 84 for light source or light source support and luminescent material; subclasses 257+ for light source (or support therefor) and modifier, especially subclass 259 for laser type; subclass 260 for fluorescent type; subclasses 261+ for carbon arc type; subclasses 263+ for ionized gas or vapor light source; subclass 266 for nonelectric type; and subclasses 317+ for light modifiers. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
365, Static Information Storage and Retrieval, for imparting information in a nonchemically defined radiation sensitive receiver using radiant energy. 106 for use of radiant energy to alter a storage material which is usually read out electrically, especially subclass 107 for chemical fluids; subclass 108 for liquid crystal; subclass 109 for photoconductors and ferroelectric; subclass 110 for electroluminescent and photoconductive; subclass 111 for electroluminescent; subclass 113 for amorphous; subclasses 114+ for semiconductor; subclass 117 for ferro-electric; subclass 118 for electron beam affected material; and subclass 119 for color center (radiation responsive). (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
369, Dynamic Information Storage or Retrieval, 272 for an element having dynamically stored information (e.g., sound) thereon, particularly subclasses 284+ for an optical information storage element not chemically defined. Class 430 provides for such a storage element when it is chemically defined. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" above)
369, Dynamic Information Storage or Retrieval, 100 for optical information recording or reproduction. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
369, Dynamic Information Storage or Retrieval, 100 provide for the dynamic storage of information by radiation modified chemical action to the storage medium. Class 430 provides for radiation imagery process of chemically forming a sound record or the product of the process chemically defined. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
369, Dynamic Information Storage or Retrieval, 100 for dynamic storage by a radiation induced chemical change; and subclasses 272+ for storage elements, particularly subclasses 284+ for a nonchemically defined photosensitive surface. This class (430) provides for a radiation imagery process of information storage, or a chemically defined storage element. (See Lines With Other Classes, Lines and search notes to special classes.)
378, X-Ray or Gamma Ray Systems or Devices, appropriate subclasses. Note the class lines described in the reference to Class 250. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
386, Television Signal Processing for Dynamic Recording or Reproducing, 31, 42+, and 128+ for photos:graphic television
recording, subclasses 45 and 125+ for recording or reproducing television on disc, and subclass 127 for thermoplastic record. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
396, Photography, for the generic locus for photos:graphic apparatus, fluid treating (post imaging) apparatus, subcombinations of such apparatus, accessories related to photography, and related nonchemical processes or process of operating the apparatus. Subclasses for apparatus and process include 1 for studio structure; subclasses 30+ for developing cameras; subclasses 305+ for color using monochrome film; subclasses 322+ for plural image recording; subclasses 429+ for combined or convertible devices; subclasses 549+ for phototype composing; and subclasses 564+ for post imaging fluid treatment. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes" and "Lines With And Search Notes To Process And Apparatus Classes, Relation With Special Classes Involving Radiation Imagery" above.)
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, subclasses 177+ for exposure, subclasses 222+ for development, subclasses 297+ for transfer, subclasses 320+ for fixing, subclasses 343+ for cleaning, and subclasses 361+ for document handling. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes")
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, subclasses 177+ for exposure, subclasses 222+ for development, subclasses 297+ for transfer, subclasses 320+ for fixing, subclasses 343+ for cleaning, and subclasses 361+ for document handling. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with Process And Apparatus Classes.)
399, Electrophotography, for apparatus (per se, or significant apparatus combined with chemical material) and process (not involving a chemical reaction or a chemically defined radiation receiver) for electrophotos:graphically reproducing information in the form of an image, certain nonchemical combinations, subcombinations, and perfecting features pertaining to same, search 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, subclasses 177+ for exposure, subclasses 222+ for development, subclasses 297+ for transfer, subclasses 320+ for fixing, subclasses 343+ for cleaning, and subclasses 361+ for document handling. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
401, Coating Implements With Material Supply, 132 for implement including rupturable means or sealed-cartridge receiver. (Relation with special classes involving radiation imagery.)
423, Chemistry of Inorganic Compounds, appropriate subclasses for an inorganic compound or nonmetallic element having a Class 430 utility. (See Lines With Other Classes, Lines With And Search Notes To Compound, Composition, And Material Classes.)
423, Chemistry of Inorganic Compounds, the following subclasses for inorganic elements (compounds of same) used in radiation imagery chemistry: 23 for treating mixture to obtain Group IB metal (Cu, Ag, or Au); subclasses 99+ for Group IIB metal (Zn, Cd, or Hg); subclass 508 for selenium or tellurium or compound thereof; and subclass 622 for zinc oxide compound. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation With Special Classes Involving Radiation Imagery.)
427, Coating Processes, subclass 7 for coating to detect fraud or tampering; subclasses 457+ for direct application of electrical, magnetic, wave, or particulate energy, especially subclasses 487+ for polymerization of applied coating utilizing direct application of electrical, magnetic, wave, or particulate energy; subclasses 523+ utilizing ion plating or ion implantation; subclasses 569+ for deposition coating processes utilizing plasma deposition; subclasses 580+ for deposition coating processes utilizing electrical discharges; subclass 581 for deposition coating processes utilizing chemical liquid deposition; 582+ for deposition coating processes utilizing photo initiated chemical vapor deposition; 585+ for deposition coating processes utilizing chemical vapor deposition; subclass 591 for deposition coating processes utilizing induction or dielectric heating; subclass 592 for deposition coating processes utilizing resistance heating; subclass 595 for deposition coating utilizing electromagnetic or particulate radiation; subclasses 598+ for deposition coating processes utilizing magnetic field or force, 600+ for deposition coating processes utilizing sonic or ultrasonic energy; subclass 143 for stencil blank making; 145 for formation of latent image or developing the same and subclass 146 for transfer or copy sheet making. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
427, Coating Process, takes the process of coating: (a) not combined with radiation imagery process, (b) involving use of radiation during coating which does not involve a chemical reaction (Class 204 subject matter), and (c) resulting in a product (composition) for other than radiation imagery. Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, provides for a process of: (1) coating a base with a radiation sensitive material alone or combined with a nonradiation sensitive material to make a radiation
imaging receiver, (2) utilizing radiant energy (a) to form an image, or (b) to finish an image so formed; either (a) or (b) alone combined with a coating operation, (3) post imaging process utilizing coating operation to finish an image, and (4) perfecting or protecting a finished image by a coating operation. Dual disclosures will go to Class 427. (See Lines With Other Classes, Lines and search notes to special classes.)
428, Stock Material or Miscellaneous Articles, subclass 1 for a stock liquid crystal; subclasses 29+ for an article having a latent image formed by means other than radiation imagery; and appropriate subclasses for nonradiation sensitive stock material disclosed for use in radiation imagery. (See Lines With Other Classes, "Lines With And Search Notes To Articles Or Product Classes")
428, Stock Material or Miscellaneous Articles, provides for stock-liquid crystal, an article having a latent or developable image formed other than by use of radiation, and nonradiation sensitive stock material disclosed for use in radiation imagery. Class 430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, provides for a product (article) which is either (a) imaged and defined by its composition, (b) radiation sensitive and limited by claims or disclosure for use in radiation imagery, or (c) a product of radiation imagery (not elsewhere classified). (See Lines With Other Classes, Lines and search notes to special classes.)
430, Radiation Imagery Chemistry: Process, Composition, or Product Thereof, provides for radiation imagery process of forming a sound record or the product chemically defined. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, Relation with special classes involving radiation imagery.)
432, Heating, 9 for process of heating or heater operation involving treating an article, container, batch, or body as a unit. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
436, Chemistry: Analytical and Immunological Testing, 1 for analytical control methods. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
438, Semiconductor Device Manufacturing: Process, appropriate subclass for methods of making semiconductor devices; see the search notes therein. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
451, Abrading, 29 for finishing a workpiece by abrading, especially using a stencil or shield. (See Lines With Other Classes, Lines with and search notes to process and apparatus
classes, General relation with process and apparatus classes.)
462, Books, Strips, and Leaves for Manifolding, 69 for manifolding process wherein printing is transferred from one sheet to another by use of carbon or some other transferable material. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
520, Synthetic Resins or Natural Rubbers, for a synthetic resin, per se, having a Class 430 utility, and for compositions containing a synthetic resin and not solely disclosed as having a Class 430 imaging use. (See Lines With Other Classes, Lines with and search notes to compound, composition, and material classes.)
504, Plant Protecting and Regulating Compositions. (See Lines With Other Classes, Composition or Material)
520, Synthetic Resins, or Natural Rubbers, for synthetic resin compositions disclosed as having a Class 430 imaging use but not limited thereto. (See Lines With Other Classes, "Lines with and Search Notes To Compound, Composition, And Material Classes, Composition or Material, b." above.)
520, Synthetic Resins or Natural Rubbers, for synthetic resin compositions useful as a component of a radiation sensitive element, e.g., backing, overcoat, subing, etc. (See Lines With Other Classes, "Lines With And Search Notes To Compound, Composition, And Material Classes, Composition or Material, c.")
520, Synthetic Resins or Natural Rubbers, for synthetic resins mixtures which may be radiation sensitive, and which utility is not provided elsewhere. (See Lines With Other Classes, Lines with and search notes to process and apparatus classes, General relation with process and apparatus classes.)
542, Organic Compounds, which provides for heterocyclic cyanine dyes, many of which are useful as sensitizers in Class 430 silver halide emulsions. (See Lines With Other Classes, Lines with and search notes to compound, Lines with and search notes to compound, composition, and material classes, Composition, and material classes.)
536, Organic Compounds, for cellulose or its derivative, per se, useful as an ingredient in a radiation sensitive element, e.g., cellulose ester suitable for a film base, etc. (See Lines With Other Classes, "Lines With And Search Notes To Compound, Composition, And Material Classes, Composition or Material, c.")
D16, Photos:graphic and Optical Equipment, appropriate subclasses for designs pertaining to subject matter of the class. (See Lines With Other Classes, Lines with and search
notes to process and apparatus classes, Relation with special classes involving radiation imagery.)

GLOSSARY:
ADDITIVE COLOR A
color (red, green, blue) when added to the other two additive colors produce white.
CARBOHYDRATE A
polyhydroxy mono-aldehyde and a polyhydroxy mono-ketone, generally having the formula C (H[subscrpt]2[end subscrpt]O) and substances which are hydrolyzed to these. The term includes cellulose, starch, dextran, and sugar.
CHEMICAL PROCESS A
process involving a chemical reaction or the recitation of chemical composition, compound, etc., in the claims which are involved in a chemical reaction during the process.
COLOR IMAGE IN OR ON AN IMAGE RECORD
At least a portion of the image record absorbs only part of the light in the visible electromagnetic spectrum, excludes black image on white background, or vice versa, includes black image on green background.
EXPOSURE
Application of radiation to form or perfect an image.
HETEROCYCLIC
Organic compound containing a ring composed of carbon and at least one element from the group consisting of nitrogen, sulfur, selenium, tellurium, and oxygen.
IDENTIFIED
A substance, layer, or product is considered identified when it is claimed in terms of its chemical constitution instead of merely its function. The terms "organic" and "inorganic" are not considered identified, but any other positive chemical identification is considered sufficient even if generic, e.g., heterocyclic, synthetic resin, hydrocarbon, etc. Negative definition, per se, e.g., nonaqueous, etc., is not considered identification, but if combined with sufficient other material, e.g., nonaqueous alcohol. The term acid or base or their equivalents are considered identification. The identification of any ingredient of a layer is sufficient to make the layer identified.
IMAGE
The likeness or reproduction of (a) an object, or (b) an instrumented or discernible phenomenon.
IMAGING
The application of radiation to form an image.
IMAGE RECORD
A record, made using an imaging process, where the image is located, e.g., the image may be in or on a radiation conductor containing element or may be in or on receptor element, etc.
MONOCHROME IMAGE
An image which absorbs only part of the light in the visible electromagnetic spectrum.
RADIATION
The propagation of energy through space or through a material. It may be in the form of electromagnetic waves, corpuscular emissions, or sound waves. The format is usually categorized according to frequency, e.g., Hertzian, infrared, (visible) light, ultraviolet, X-rays, gamma rays, etc., corpuscular emissions are categorized as alpha, beta, or cosmic.
RECEPTOR ELEMENT
An element which receives a transferred image from another element.
STRUCTURALLY DEFINED
Defined in terms of: (a) numerical or relative dimension; e.g., 5 microns thick, twice as long as wide, etc. As applied to products or layers, it is the overall exterior dimension of either the completed product or an individual layer; (b) plural, non-coextensive layers, e.g., leader strip, etc., however, nonuniform or non-coextensive images are not considered structure; (c) overall mechanical shape, except mere rectangular or planar, e.g., roll of film sprocket holes, etc.
STRIPPING LAYER
A layer or layers which are part of a combination of plural layers which layer or layers are strippable from a layer immediately adjacent to it or are capable of separating by internal cohesive failure.
SUBTRACTIVE COLOR
A color (cyan, magenta, and yellow) which when combined with another subtractive color produces an additive color (red,
green, blue).

HOLOGRAPHIC PROCESS, COMPOSITION OR PRODUCT:
This subclass is indented under the class definition. Composition or product involving a hologram.

SEE OR SEARCH CLASS:
348, Television, 40 for use of holos:graphic techniques for processing color information.
355, Photocopying, subclass 2 for holos:graphic copying.
359, Optics: Systems (Including Communication) and Elements, 1 for holos:graphic system or element.

Composition or product or process of making the same:
This subclass is indented under subclass 1. Composition or product, also the process of making the same.

USE OF SOUND OR NONDIGITAL COMPRESSIVE FORCE:
This subclass is indented under the class definition. Processes for using sound waves or a compressive force (wherein the means producing the compression does not touch the image receiver) to form or otherwise perfect the image.

SEE OR SEARCH CLASS:
73, Measuring and Testing, 570 for vibration measuring and testing, especially subclasses 632+ for sonic wave apparatus.
116, Signals and Indicators, subclass 2 for the use of ultrasonic device for diagnostic purposes which may include taking a picture with sound.
367, Communications, Electrical: Acoustic Wave Systems and Devices, 7 for electro acoustic imaging systems.

RADIATION MODIFYING PRODUCT OR PROCESS OF MAKING:
This subclass is indented under the class definition. Products chemically defined which functions to modify the radiation during imaging and is in the form of a photomask, screen, etc., or the process of making same or like products.

SEE OR SEARCH THIS CLASS, SUBCLASS:
510 for antihalation or filter layer containing product.

SEE OR SEARCH CLASS:
360, Dynamic Magnetic Information Storage or Retrieval, 131 for record medium, especially subclass 134 for tape; subclass 135 for disk; and subclass 136 for drum.

Radiation mask:
This subclass is indented under subclass 4. Subject matter wherein the light modifying means is in the form of a radiation mask.

SEE OR SEARCH CLASS:
216, Etching a Substrate: Processes, for disclosure (nonclaimed) of forming an image by radiation imagery and involving a claimed post imaging etching process.

Screen other than for cathode-ray tube:
This subclass is indented under subclass 4. Subject matter wherein the light modifying means consist of sets of opaque lines crossing each other on a transparent substrate, the substrate consist of a series of small holes or some other similar structure which breaks up the radiation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
23 for the so-called cathode-ray tube screen.

SEE OR SEARCH CLASS:
313, Electric Lamp and Discharge Devices, 461 for cathode-ray tube screens.

Color:
This subclass is indented under subclass 6. Subject matter used to produce color.

MICROGRAPHY, PROCESS, COMPOSITION, OR PRODUCT OTHER THAN MICROELECTRONIC DEVICE MANUFACTURE:
This subclass is indented under the class definition. Processes wherein an image of the order of less than a few microns in size of an object, or of an instrumented or discernible phenomenon is produced in a medium, such as images produced in microfilm or microfiche, etc.; radiation sensitive or image receiving compositions and products manufactured, or specially adapted for use in obtaining images less than a few microns in size; and processes of making the composition or product.

SEE OR SEARCH THIS CLASS, SUBCLASS:
56 154+, 264+, 270.1+, 338+, 367+, and 495.1+ for radiation-sensitive compositions and products disclosed to have general utility in micrography, but not specially adapted or made for use in micrography.
311 for microelectronic device manufacture.

SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, 701, especially subclass 703 for aperture cards with image carrying microfilm; and subclasses 361+ for microfilm views.
353, Optics: Image Projectors, for microfilm viewers with image projection on screen.
355, Photocopying, 18 for photocopying apparatus used in micrography; and subclass 1 for apparatus used in micrography combined with fiber optics.

IMAGED PRODUCT:
This subclass is indented under the class definition. Products containing an image defined in terms of its chemical
composition.

SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, 427 for a display of art having an enhanced visual effect, which work may include a photograph not defined in terms of its composition.
428, Stock Material or Miscellaneous Articles, 195 for a photograph not defined in terms of its composition.

Antifraud or antitampering:
This subclass is indented under subclass 9. Products having a material or feature which prevents or makes known an attempt to use the imaged product in a fraudulent manner or to tamper therewith.
(1) Note. Included herein is an imaged product containing an ingredient which upon exposure to the strong light typically employed in electric photos:graphic copying equipment, causes the image to become blurred or otherwise obscured.

SEE OR SEARCH CLASS:
194, Check-Controlled Apparatus, 97 especially subclass 100 for a material test in a fraud preventive apparatus.
250, Radiant Energy, subclass 271 for invisible radiant energy record and receiver.
283, Printed Matter, 72 and 902 for fraud preventing or detecting in printed matter.
427, Coating Processes, subclass 7 for coating process involving fraud or tamper detecting.
428, Stock Material or Miscellaneous Article, cross-reference art collection 916 for fraud or tampering subject matter.

Structurally defined:
This subclass is indented under subclass 9. Product defined in terms of its mechanical structure.
(1) Note. The term "structurally defined" is defined in the Glossary.

Nonuniform or noncoextensive layer added to finished imaged product:
This subclass is indented under subclass 11. Products wherein after an image has been finished to its desired final state another layer has been added to the product which layer is either nonuniform in physical dimensions or physical or chemical properties or which layer is not coextensive with the imaged product. The nonuniformity may, e.g., be in thickness or color, or the added layer may be added to only a part of the imaged product. The nonuniformity may be as a wrinkled, stippled, marbleized, or wood grain effect. There must be intent to produce a nonuniform layer, thus coating a previously roughened imaged product which necessarily results in a nonuniform coating is not included.
(1) Note. Addition of a layer by a step or metal working mechanical manufacture is placed in the appropriate class for the mechanical manufacturing step.

SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, for an imaged product combined with structured exhibiting devices for that class.

Image contained within transparent base:
This subclass is indented under subclass 9. Products wherein the image is contained in transparent component, e.g., plastic, glass, etc.

Multilayer:
This subclass is indented under subclass 9. Products which contain an identified layer in addition to an identified image layer and one identified backing or protective layer.
(1) Note. Included in the indented subclass hereunder are products containing two or more identified image layers even if no base or support layer is identified.

Plural image layers:
This subclass is indented under subclass 14. Products containing two or more layers each containing an image provided for in this class.

Deposited metal coating on image:
This subclass is indented under subclass 9. Products wherein a metal is deposited on the already formed image. Typically, a metal is deposited on a silver image by a so-called electroless plating process.

Nonsilver image:
This subclass is indented under subclass 9. Products in which the image is not a metallic silver image. This subclass includes, for example, products in which the image composed of a dye or pigment or of a metal other than silver, or the image is formed by the edges of layers of a radiation sensitive colloid layer which has been imagewise exposed and developed.

Including resin or synthetic polymer:
This subclass is indented under subclass 9. Products containing a resin or synthetic polymer.

ERASABLE IMAGING:
This subclass is indented under the class definition. Processes wherein a visible or retrievable image is at least partially removed by a specified processing procedure.

SEE OR SEARCH THIS CLASS, SUBCLASS:
20 31+, 532, and 962, for radiation-sensitive compositions and products and methods of using those compositions and products for unclaimed functions and features of erasing images.

SEE OR SEARCH CLASS:
346, Recorders, subclass 21 for recorders combined with record deleting means.
360, Dynamic Magnetic Information Storage or Retrieval, subclass 25, 57, and 66 for partial or complete erasure of information in a dynamic magnetic storage medium.
396, Photography, 655 for photos:graphic retouching apparatus.

LIQUID CRYSTAL PROCESS, COMPOSITION, OR PRODUCT:
This subclass is indented under the class definition. Processes wherein an image is produced in or defined by a liquid crystal material, radiation-sensitive composition or product of a liquid crystal material used in the process, and process of making the radiation sensitive composition or product.

SEE OR SEARCH THIS CLASS, SUBCLASS:
1 for liquid crystal used in holos:graphic process, composition, and product involving use of a chemically named receiver or wherein a chemical reaction results in formation of hologram.
19 for liquid crystal used in process wherein an image made using radiation chemistry is erased.

SEE OR SEARCH CLASS:
250, Radiant Energy, subclass 331 for non-chemical infrared to visible imaging including liquid crystal detector.
252, Compositions, 299.01 for liquid crystal composition and article defined by such composition not disclosed or claimed for use in imagery; and subclasses 582+ for liquid crystal composition, and article defined by such composition used as optical filter.
260, Chemistry of Carbon Compounds, 544 for cholesteremic liquid crystal compound.
349, Liquid Crystal Cells, Elements and Systems, appropriate subclasses for a liquid crystal material and especially subclass 24 for radiation sensitive excitation in liquid crystal devices and subclasses 182+ for a particular composition of a liquid crystal material.
359, Optics: Systems (Including Communication) and Elements, 1 for liquid crystal used in nonchemical holos:graphic
process and in holos:graphic device.
360, Dynamic Magnetic Information Storage or Retrieval, of liquid crystal used to store or retrieve dynamic information stored magnetically.
365, Static Information Storage and Retrieval, subclass 108 for liquid crystal used to store or retrieve static information.
428, Stock Material or Miscellaneous Articles, subclass 1 for liquid crystal stock material not especially adapted or made for use in imaging.

RETRIEVING IMAGE MADE USING RADIATION IMAGERY:
This subclass is indented under the class definition. Processes wherein a specified process step of retrieving an image, such as by optically projecting the image upon a screen, from an image carrying chemically identified receiver or from an image formed by a chemical reaction. Included procedures for retrieving the image are optical, magnetic, or electrical in nature. Merely viewing the image with the eye is not considered a specified process for the subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:
1 for holos:graphic process combined with retrieving the hologram.
5 for image carrying optical mask capable of optically reproducing the image upon a radiation-sensitive product.
20 for the retrieval of image in liquid crystal material.
31 97, 139, and other process subclasses wherein a latent or visible image is finished or perfected by producing an invisible or visible image and for disclosed but not specified (unclaimed) image retrieval process.

SEE OR SEARCH CLASS:
250, Radiant Energy, appropriate subclasses for nonchemical devices and process of this type; subclass 271 for device and process used for nonchemical detection of invisible radiation or conversion to electrical signal of information in symbolic or nonphotos:graphic form; subclasses 336+ for device or process wherein nonchemical invisible radiant energy imaging of a medium produces an electrical potential difference or a current flow; subclasses 199+ and 458+ for device or process wherein a nonchemical image is retrieved or detected using light-wave communication such as with a photocell; and subclasses 472+ for device or process wherein
nonchemical invisible radiant energy imaging of a medium produces a nonelectrical response.
352, Optics: Motion Pictures, 1 for nonchemical sound recording or reproduction combined with motion pictures.
353, Optics: Image Projectors, 25 for process and system involving selective retrieval of information; and subclass 121 for methods of optically retrieving information by projection wherein the information is in the form of a nonchemical image.
355, Photocopying, subclass 5 for electric photocopying apparatus combined with means to project reproduced image onto a screen or display means for viewing.
359, Optics: Systems (Including Communication) and Elements, 290 for optical retrieval of nonchemical image wherein a means is used to change the optical properties of the medium during retrieval.
360, Dynamic Magnetic Information Storage or Retrieval, for nonchemical magnetic dynamic information storage and retrieval process and system, especially 1 for process and device used to store or retrieve the image wherein the device has an additional utility than as a magnetic record carrier such as a photos:graphic image medium; and subclasses 131+ for specific structure of magnetic record card other than mere magnetic coatings on a substrate.
365, Static Information Storage and Retrieval, for nonchemical magnetic, electrical, or optical static information storage and retrieval process or system, especially 185.01 for floating gate memory storage (e.g., flash memory), subclasses 185.01+ for floating gate memory storage (e.g., flash memory), subclasses 106+ and 120+ wherein radiant energy and information masking are utilized.

REGISTRATION OR LAYOUT PROCESS OTHER THAN COLOR PROOFING:
This subclass is indented under the class definition. Processes having a step recited for registering one or more images with each other or with the radiation-sensitive medium to be imaged.
(1) Note. Color proofing is provided for elsewhere in the class.

SEE OR SEARCH THIS CLASS, SUBCLASS:
143 and 358, for color proofing.

SEE OR SEARCH CLASS:
346, Recorders, subclass 14, 54, 60, 61, and 94+ for registration feature for that class.
352, Optics: Motion Pictures, subclass 46, 51, and 97 for features involving registration.
356, Optics: Measuring and Testing, subclass 390 and 399+ for alignment features.
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, and subclasses 361+ for document handling, particularly subclass 372 having registration of original, subclass 385 for cutting copies, and subclass 394 for registration with image of copy.
552, Organic Compounds, subclass 653 of Vitamin D compounds, cholecalciferols, dihydrotachysterols, 3-5 cyclovitamin D compounds, etc. which contain only carbon and hydrogen.

PRODUCING CATHODE-RAY TUBE OR ELEMENT THEREOF:
This subclass is indented under the class definition. Processes for making a cathode-ray tube or components thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for photomask, screens, etc., for having use other than with a cathode-ray tube and process of making same.

SEE OR SEARCH CLASS:
313, Electric Lamp and Discharge Devices, 364 for cathode-ray tube and its components, especially subclasses 365+ for image pickup tube; subclasses 402+ for shadow mask, support, or shield, subclasses 461+ for screen structure; subclasses 523+ for photosensitive lamps, and especially subclasses 541 and 544 for cathode tube having photosensitive material on the tube wall.
348, Television, 805 for a cathode-ray tube as a television display device.

Using specific control or specific modification of exposure, i.e., by manipulation of radiation source or exposure through elements other than shadow mask:
This subclass is indented under subclass 23. Processes involving control or modification of the exposure through a shadow mask.
(1) Note. The control or modification of the exposure is made by, e.g., an optical element, a faceplate, or relative movement during the exposure between the light source, shadow mask, and faceplate, etc.

With light-absorbing matrix on faceplate:
This subclass is indented under subclass 23. Processes wherein the contrast of the phosphoric screen, e.g., is improved by surrounding the phosphoric dots or stripes with a light absorbing faceplate.

With faceplate of phosphorus stripes:
This subclass is indented under subclass 23. Processes wherein a faceplate is produced composed of phosphoric stripes.

With filter material on finished faceplate:
This subclass is indented under subclass 23. Processes wherein the contrast of the finished faceplate is improved by incorporating filter material which is colormetrically related to the phosphor areas on the faceplate.

Using specified radiation-sensitive composition other than a nominal sensitized polyvinyl alcohol:
This subclass is indented under subclass 23. Processes involving the use of a named radiation-sensitive composition other than a sensitized polyvinyl alcohol which does not have a specified additive.

Using specified post-imaging process composition:
This subclass is indented under subclass 23. Processes involving use of a named composition which treats the exposed radiation-sensitive material.

INCLUDING CONTROL FEATURE RESPONSIVE TO A TEST OR MEASUREMENT:
This subclass is indented under the class definition. Subject matter including the step of regulating a condition as a result of test or measurement to maintain or effect a change of the same.

ELECTRIC OR MAGNETIC IMAGERY, E. G., XEROGRAPHY, ELECTROGRAPHY, MAGNETOGRAPHY, ETC., PROCESS, COMPOSITION, OR PRODUCT:
This subclass is indented under the class definition. Subject matter wherein the electrical conductivity of, the electrical charge on, the magnetic condition of, or the electrical emissivity of a medium is selectively altered by the action of electromagnetic radiation during imaging, and wherein a visible image is formed on the medium or latent image thereon which persists after imaging based upon difference in electrical or magnetic property described above; and when the visible or latent image is not formed by the action of electro-magnetic radiation, the image is finished as by development, fixing, transferring, or cleaning the surface, etc.; radiation-sensitive composition and product used in the process, process of making the composition and product, and finishing process, composition, and product used in the process.
(1) Note. The processes, compositions, and articles herein classified generally involve the application of a uniform electrostatic charge to a radiation-sensitive medium comprising a conductive support with a photoconductive insulator, which medium is then selectively exposed to radiation after the charge in accordance with the exposure and thereby produces an electrostatic image or latent image or the radiation-sensitive medium. Alternatively, the electrostatic charge, in image pattern, may be formed during the exposure to radiation. This image may be developed or rendered visible by applying particulate material or liquid droplets, charged or uncharged, to the electrostatic image. The particulate material may be caused to permanently adhere, by overcoating, fusion, or coalescence to the exposed medium or it may be transferred to another surface and caused to
adhere thereto, and the radiation-sensitive medium be cleaned and reused. These processes are sometimes referred to as "Xerography" and "Electrofax" processing.
(2) Note. Subcombinations of electric imagery directed to developing, transferring, or adhering alone or in combination with an imaging operation are classified herein to include compositions and articles used in developing fixing, transferring and adhering. Subcombinations of electric imagery directed to charging or cleaning, alone or in combination (without an imagery operation using radiation) are not classified herein, for which see the search notes below. However, subcombinations directed to charging or cleaning when combined with the imagery operation are classified herein.

Electrophoretic imaging, process, composition, or product:
This subclass is indented under subclass 31. Processes, compositions, and products wherein particles suspended in an insulative liquid carrier between electrodes, migrate in an imagewise configuration in response to both an electrical potential difference between electrodes across the suspension, and imaging radiation. The pigments are usually colored and light absorbing. The pigments can be radiation-sensitive to the imaging radiation and are sometimes referred to as electrically photosensitive pigments. The migration of particles usually forms an image or an electrode.

Post treatment process to fix or transfer image, or collect or remove electric radiation sensitive pigment:
This subclass is indented under subclass 32. Processes including a step of making permanent the particle image and of transferring the particle image after imagewise configuration migration, or of collecting or removing electrically photosensitive pigments after imagewise configuration migration.

Pretreatment process to change the physical properties of electrophoretic suspension or specified imaging feature exposure:
This subclass is indented under subclass 32. Processes
including a step which changes the physical properties of the insulative suspension prior to imaging such as by liquefying a solid medium to form a liquid suspension, or wherein an imaging exposure step includes a specific feature such as the wavelength and intensity of the imaging radiation, or location of the source used for imaging radiation.

Specified electric field applied or electric charging step:
This subclass is indented under subclass 32. Processes wherein the electrical potential difference is applied using a specified feature other than a general application of a continuous externally applied field to the electrodes applied during the exposure to imaging radiation such as when an electrode is electrically charged, or when the amount of the potential difference is named.

Manipulation of electrode:
This subclass is indented under subclass 32. Processes wherein an electrode used in electrophoretic imaging is in motion relative to the liquid suspension during the exposure to imaging radiation such as when a nip of liquid suspension is formed by movement of the electrode.

Electric radiation sensitive pigment:
This subclass is indented under subclass 32. Processes, compositions, and products wherein the electrically photosensitive pigment is identified by a description of its chemical composition, e.g., a phthalocyanine pigment, etc.

Material used to modify electrophoretic suspension response:
This subclass is indented under subclass 32. Processes wherein an additional material modifies the response of the electrophoretic suspension during imaging, e.g., the material may be a radiation-conductive layer, a dark exchange, or injector material, or an ingredient in the suspension itself, etc.

Magnetic imaging:
This subclass is indented under subclass 31. Process wherein a magnetic force is used to form the image.

SEE OR SEARCH CLASS:
118, Coating Apparatus, 620 for apparatus for applying a magnetic coating.
252, Compositions, subclass 62.51 for magnetic compositions not limited to use in radiation imagery.
346, Recorders, subclass 74.2 for magnetos:graphic recorders.
358, Facsimile and Static Presentation Processing, subclass 301 for magnetic recording apparatus for that class.
360, Dynamic Magnetic Information Storage or Retrieval, 131 for magnetic records claimed in terms of significant structure. (See note under 252/62.51 page 14B).
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, subclasses 177+ for exposure, subclasses 222+ for development, subclasses 297+ for transfer, subclasses 320+ for fixing, subclasses 343+ for cleaning, and subclasses 361+ for document handling.

Manifold imaging, process, composition, or product:
This subclass is indented under subclass 31. Processes, compositions, and products wherein an electrical potential difference is applied across a manifold sandwich which has a cohesively weak, structurable, fracturable layer or a substrate and a receiver in contact with the layer, the sandwich is imaged in the presence of an electrical potential difference to form an image in the radiation-conductive layer (e.g., by exposure of a cohesively weak, structurable, fracturable radiation-conductive layer to radiation in an imagewise configuration), and the receiver is separated from the substrate in the presence of an electrical potential difference across the sandwich which causes the layer to fracture along the image boundaries to produce an image on the receiver and on the substrate. The compositions and products always have a radiation-conductor ingredient and a radiation-conductive layer, respectively.

Migration imaging, process, composition, or product, e.g., electrosolography, etc.:
This subclass is indented under subclass 31. Processes, compositions, and products wherein a latent electrical image formed on an element having particulate marking material embedded in or overlying a softenable insulating material and wherein the element is subject to a softening treating step which causes the particles to migrate in an imagewise configuration in the softened material to produce an image. Usually, the particulate marking materials are electrically radiation-sensitive particles and the latent electrical image is formed by electrically charging and imaging the element with radiation. The compositions and products always contain electrically radiation-sensitive particles. These processes are sometimes referred to as electrosolography.

To produce a color reproduction, i.e., color named, or more than one color specified:
This subclass is indented under subclass 31. Processes wherein a color image in or on an image record is formed, e.g., a monochrome image such as a green image, or a multicolor such as made up of subtractive or additive colors, etc.

Color correction:
This subclass is indented under subclass 42. Processes wherein the color in the color image is modified by an after treatment step.

Manipulation of color separation image to obtain a multicolor image in registration:
This subclass is indented under subclass 42. Processes wherein the color separation images are physically manipulated to register them such that a multicolor image is produced (e.g., subtractive color images are manipulated to produce a full natural color image), etc.

Identified developing composition or identified developing feature:
This subclass is indented under subclass 42. Processes wherein a named developing composition or a named developing process feature is used to produce a color image.

Identified radiation-conductive element or composition:
This subclass is indented under subclass 42. Processes wherein a named radiation-conductive element or composition is used to produce a color image.

Identified receptor or named image transfer feature:
This subclass is indented under subclass 42. Processes wherein a named receptor element (i.e., for receiving transferred or induced charge, or transferred developing composition), or named image transfer process feature is used to produce a color image.

Electrostatic image transfer:
This subclass is indented under subclass 31. Processes wherein a latent electrostatic image in or on a first member is transferred to or reproduced on a separate second member by either (a) conduction of electrical charges across an air gap between members, or (b) when the members are in surface contact by direct charge transfer between the members or by the influence of the electrical charges of the image. The latent electrostatic image is usually obtained by uniformly charging, and imaging a radiation-conductive layer with radiation to form an image of electrostatic surface charge on the layer.

To produce printing surface:
This subclass is indented under subclass 31. Processes wherein the imaged medium is used to form a member having a surface capable of accepting ink with intended use in a printing process wherein multiple copies are produced. The additional step of applying ink to the surface or printing is in this subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:
97 especially 126, for xerox printing processes wherein multiple copies are produced as recharging or redeveloping the image medium.
204 and 300+, for other imaging processes than electric or magnetic imaging utilized to manufacture printing plates.

Deformation imaging, e.g., frost imaging, etc.:
This subclass is indented under subclass 31. Processes wherein the imaged medium is used to form a deformation image usually in the form of a relief or frost pattern by deforming a compliant layer or film. The deformation of the compliant layer is mostly performed by heating or solvent treatment. Sometimes the imaging and deformation of the compliant layer are done simultaneously.

SEE OR SEARCH THIS CLASS, SUBCLASS:
48 for deformation image formation which additionally uses a charge transfer step to a separate member.
290 for light-scattering images not involving electric or a magnetic imaging.

Persistent internal polarization imaging:
This subclass is indented under subclass 31. Processes wherein the simultaneous application of an electric field and electromagnetic irradiation upon a medium produces a persistent internal polarization within the radiation conductive insulator of the medium in the form of a separation of positive or negative charges for a finite time. The application of electromagnetic irradiation is oftentimes done in an imagewise configuration.

SEE OR SEARCH CLASS:
399, Electrophotography, 130 for image formation.

Electrolysis imaging:
This subclass is indented under subclass 31. Processes wherein a radiation-conductive plate having a latent conductivity image is used as an electrode to form a deposited image thereon when an electrical potential difference is applied across an electrolyte in electrical contact with the electrode and the plate. The deposition usually occurs subsequent to the formation of the latent conductivity image and is sometimes referred to as photoconductography.

Using ion or particle flow modulation:
This subclass is indented under subclass 31. Processes wherein an image is formed by modulation of ion or particles directed upon the medium.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, subclasses 177+ for exposure, subclasses 222+ for development, subclasses 297+ for transfer, subclasses 320+ for fixing, subclasses 343+ for cleaning, and subclasses 361+ for document handling.

To produce multiple image on medium or plural radiant energy exposures of medium, e.g., image intensification using two images, or two exposures of same image, etc.:
This subclass is indented under subclass 31. Processes wherein either multiple images are formed on the medium, or at least two radiant energy exposures are used to produce an image on the medium.

SEE OR SEARCH THIS CLASS, SUBCLASS:
97 especially 126, for producing more than one image record (e.g., a duplex image record wherein the image is on both sides of the record) on a material other than the radiant energy image receiving medium and 125 for producing an image record of different image carrying originals to be copied, especially when a cleaning feature is included between imaging procedures.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, and subclasses 177+ for exposure, particularly subclass 194 for composite.

Charging simultaneous with imaging:
This subclass is indented under subclass 31. Processes wherein the surface of the medium is simultaneously electrically charged and subject to radiant energy imaging.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 168+ for charging.

Radiation-sensitive composition or product:
This subclass is indented under subclass 31. Radiation-sensitive composition or product wherein the composition or product includes a radiation-conductive material which has the conductivity of, the magnetic condition of, or the electrical emissivity of the material altered by the action of radiation.

Having plural conductive layers:
This subclass is indented under subclass 56. Subject matter having plural layers conducting charge under action of radiation.

With plural charge generation layers:
This subclass is indented under subclass 57.1. Subject matter having plural layers that generate free charge carriers by absorption of radiation at least one of which is identified by chemical name.

Nitrogen hetero ring compound in one or more charge generation layers:
This subclass is indented under subclass 57.2. Subject matter wherein at least one charge generator layer contains a compound having a nitrogen containing hetero ring.
(1) Note. A hetero ring is one that includes as ring members only (1) carbon and (2) at least one atom selected from nitrogen and chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

SEE OR SEARCH THIS CLASS, SUBCLASS:
59.4 for a phthalocyanine group containing compound a single charge generator layer.
76 for compositions having a nitrogen containing hetero ring compound in a radiation-conductive composition.

Inorganic silicon (e.g., elemental silicon, silicon alloy, or inorganic silicon compound thereof) in one or more charge generation layers:
This subclass is indented under subclass 57.2. Subject matter wherein a charge generation layer contains silicon (Si) (e.g., polycrystalline silicon, amorphous silicon, silicon alloys, inorganic compounds, etc.).

SEE OR SEARCH CLASS:
136, Batteries: Thermoelectric and Photoelectric, subclasses 243-265 for solar cells with two or more layers.
148, Metal Treatment, subclasses 300-337 for p-n type stock material.
252, Compositions, subclass 501.1 for electrically conductive compositions.
257, Active Solid-State Devices, subclasses 53-56 and subclasses 431-466 for active light responsive semiconductor devices containing silicon.

With germanium (elemental, compound or alloy) in layer
containing silicon:
This subclass is indented under subclass 57.4. Subject matter wherein germanium (Ge) is included in the layer containing silicon (e.g., Ge-Si alloy, etc.)

Germanium as dopant:
This subclass is indented under subclass 57.5. Subject matter wherein the germanium (Ge) is present as a dopant, i.e., a small quantity that changes the properties of the silicon-containing layer.

P-type or n-type silicon containing (e.g., silicon doped with a Group IIIa or a Group Va element):
This subclass is indented under subclass 57. Subject matter .4 wherein the silicon is of p-type or n-type, e.g., doped with a Group IIIa (e.g., Boron, Aluminum, Gallium, etc.) or a Group Va (e.g., Nitrogen, Phosphorus, or Arsenic, etc.) element to give p (positive)-type or n (negative)-type conduction property.

Inorganic selenium (Se) (e.g., elemental selenium, selenium alloy, or inorganic compound thereof):
This subclass is indented under subclass 57.2. Subject matter wherein a charge generation layer contains selenium, e.g., elemental, alloyed, inorganic compound, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
85 for single layer alloy containing compositions.

SEE OR SEARCH CLASS:
257, Active Solid-State Devices, subclasses 53-56 and subclasses 431-466 for and subclasses 431 for light responsive semiconductor devices containing selenium or its alloys.

Charge transport layer:
This subclass is indented under subclass 57.1. Subject matter having an identified layer facilitating transport of a charge, e.g., hole or electron movement.

Inorganic charge transport layer:
This subclass is indented under subclass 58.05. Subject matter wherein the charge transport layer consists of inorganic material (e.g. doped amorphous carbon, metallic alloy, etc.).

Sulfur containing hetero ring in charge transport layer:
This subclass is indented under subclass 58.05. Subject matter wherein the charge transport layer has a sulfur hetero ring compound (e.g., thiophene, phenothiazine, thiazole, etc.).

Organosilicon or organogermanium in charge transport layer:
This subclass is indented under subclass 58.05. Subject matter wherein the charge transport layer contains an organogermanium or an organosilicon compound, i.e., a compound wherein silicon or germanium is attached directly or indirectly by non-ionic bonding to carbon of an organic radical.

Cyclic ketone, cyclodicyanomethylene, or cyclomethylenemalonate in charge transport layer:
This subclass is indented under subclass 58.05. Subject matter wherein the charge transport layer contains a cyclic ketone compound, e.g., quinones O=ring=O; a polycyclic ring ketone, e.g., O= condensed rings, etc.; a cyclodicyanomethylene, e.g., (NC) [subscrpt]2[end subscrpt]C=ring; or a cyclomethylenemalonate (ROCO)2C=ring wherein ring includes C to C unstauration (e.g., C=C) and R is alkyl or H.

Containing at least three aryl groups bonded to a single carbon atom in charge transport layer:
This subclass is indented under subclass 58.05. Subject matter wherein the charge transport layer contains a compound having at least three aryl rings bonded to a carbon atom, e.g., R' [subscrpt]3[end subscrpt]CR, wherein R' is an aryl group, and R is hydrogen or a carbon containing radical.
(1) Note. Aryl denotes an organic radical derived from an aromatic ring by removal of a hydrogen atom bonded to a ring carbon of the ring system.

Organic nitrogen in charge transport layer:
Subject matter under subclass QuickMark QuickMark 58.05 wherein the charge transport layer contains an organic nitrogen compound, e.g. amine (RNR' [subscrpt]2[end subscrpt]), cyano (RCN) or nitro (RNO [subscrpt]2[end subscrpt]), etc. wherein R is an organic radical and R' is H or an organic radical.

Hydrazone compound:
This subclass is indented under subclass 58.35. Subject matter wherein the organic nitrogen compound is a hydrazone compound, i.e., compound of the formula R [subscrpt]2[end subscrpt]N-N=CR [subscrpt]2[end subscrpt], wherein: R is H, or an organic carbon containing radical with at least one R being an organic carbon containing radical.

Additional nitrogen attached indirectly to the hydrazone group by nonionic bonding:
This subclass is indented under subclass 58.4. Subject matter wherein the hydrazone compound includes an additional nitrogen that is bonded indirectly (e.g., additional nitrogen may be in a hetero ring, an additional hydrazone group, etc.) to the hydrazone group by nonionic bonding.

Nitrogen hetero ring compound:
This subclass is indented under subclass 58.35. Subject matter wherein the charge transport layer contains a compound having a nitrogen-containing hetero ring (i.e. nitrogen is in a ring which may contain more than one hetero atom), e.g., oxazoles, oxadiazoles, triazoles, phthalocyanines, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
75-82 for compositions containing nitrogen containing hetero rings.

Pyrazole containing (e.g., including hydrogenated pyrazole, etc.):
This subclass is indented under subclass 58.5. Subject matter wherein the nitrogen containing hetero ring is a pyrazole or a hydrogenated pyrazole, i.e., five member hetero ring containing N-N in 1,2 positions of the hetero ring.

Carbazole containing or derivative:
This subclass is indented under subclass 58.5. Subject matter wherein the nitrogen containing hetero ring is a carbazole or a hydrogenated carbazole.

SEE OR SEARCH THIS CLASS, SUBCLASS:
79-82 for carbazole containing radiation conductive compositions.

Arylamine compound:
This subclass is indented under subclass 58.35. Subject matter wherein the charge transport layer contains a compound having an arylamine group, i.e., compounds of the formula R [subscrpt]2[end subscrpt]NR' wherein: R' is an aryl group, and R is hydrogen, or a carbon containing radical.
(1) Note. Aryl denotes an organic radical derived from an aromatic hydrocarbon, which can be a five, six, or seven
member ring system, by removal of one atom.

Polymeric arylamine containing:
This subclass is indented under subclass 58.65. Subject matter wherein the charge transport layer contains an arylamine polymer, i.e., a long chain structure with repeating units that include an arylamine grouping, e.g., included in this subclass are polymers having multiple arylamine side groups attached to a polymeric backbone, and polymers having arylamines in the backbone.

Triamine, or diamine containing:
This subclass is indented under subclass 58.65. Subject matter wherein the arylamine has two or three nitrogen, e.g., of the formula R [subscrpt]2[end subscrpt]N-R'-NR [subscrpt]2[end subscrpt] wherein: R is an aromatic group R is hydrogen, or a carbon containing radical, etc.

1,1' biphenyl 4,4'diamine containing (e.g., benzidine, etc.):
This subclass is indented under subclass 58.75. Subject matter wherein the charge transport layer contains the diamine R [subscrpt]2[end subscrpt]N-Ph-Ph-NR [subscrpt]2[end subscrpt], wherein: Ph-Ph is biphenylene R is hydrogen or a carbon containing radical.

Charge transport layer containing alkenylarylamine:
This subclass is indented under subclass 58.65. Subject matter wherein the charge transport layer containing arylamine compound having an alkenyl group bonded, directly or indirectly, to the nitrogen (e.g., compounds having the formula R [subscrpt]2[end subscrpt]N-R'-CR=CR [subscrpt]2[end subscrpt], wherein: R' is an arylene group R is hydrogen or a carbon containing radical.

And specified charge generator layer:
This subclass is indented under subclass 58.05. Subject matter setting forth at least a component of the charge generator layer composition.

d Charge generator layer contains compound having an acyclic azo group (i.e., -N=N-):
This subclass is indented under subclass 59.1. Subject matter wherein the charge generator layer contains a compound having an acyclic azo group wherein the azo group is not part of a hetero ring, e.g., compounds of the formula R'-N=N-R', wherein: R' is an aryl group, etc.

Compound having an acyclic azo group and having either an azomethine (i.e., -CH=N) or a stilbene group; or a compound having three or more azo groups in charge generator layer:
This subclass is indented under subclass 59.2. Subject matter wherein the azo compound of the charge generator layer has at least three azo groups, or azomethine group, i.e., N=CH -, or a stilbene group (i.e.-Ph-CR=CR-Ph- wherein Ph is a phenylene group).

Phthalocyanine or phthalocyanine derivative compound in charge generator layer:
This subclass is indented under subclass 59.1. Subject matter wherein the charge generator layer contains a phthalocyanine or derivative, e.g., nonmetal or metal-containing phthalocyanine compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:
78-82 for phthalocyanine containing radiation conductive charge generator compositions.

Titanium (Ti) or vanadium (V) phthalocyanine containing:
This subclass is indented under subclass 59.4. Subject matter wherein the phthalocyanine in the charge generator layer contains a titanium (Ti) or vanadium (V) as the central metal of the phthalocyanine.

With specified binder resin in charge transport layer:
This subclass is indented under subclass 58.05. Subject matter wherein the material holding the charge transport layer together is a natural or synthetic resin.

SEE OR SEARCH THIS CLASS, SUBCLASS:
96 when only a binder resin is specified.

Product having layer between radiation-conductive layer and base or support:
This subclass is indented under subclass 56. Products wherein said specifically named or identified by chemical or physical product contains a layer between a radiationconductive layer and a base or support.

Sensitizing layer:
This subclass is indented under subclass 60. Products containing a layer specifically named or identified by chemical or physical structure which extends the range of the spectral response of a radiation-conductive layer or increases the radiation sensitivity of a radiation conducting layer in the spectral region of inherent sensitivity or regions to which said layer is spectrally sensitized between a radiation-conductive layer and a base or support.

Conductive layer:
This subclass is indented under subclass 60. Products containing a conductive layer specifically named or identified by chemical or physical structure between a radiation-conductive layer and a base or support.

Inorganic containing:
This subclass is indented under subclass 62. Products wherein the conductive layer is nonorganic or contains nonorganic material.

Blocking or barrier layer:
This subclass is indented under subclass 60. Products containing a blocking or barrier layer, e.g., a layer which retards dark decay, specifically named or identified by chemical or physical structure between a radiation-conductive layer and a base or support.

Inorganic containing:
This subclass is indented under subclass 64. Products wherein the blocking or barrier layer is nonorganic or contains nonorganic material.

Product having overlayer on radiation-conductive layer:
This subclass is indented under subclass 56. Products containing an over-layer, i.e., a top coat layer, specifically named or identified by chemical or physical structure on a radiation-conductive layer relative to the position of a radiation-conductive layer and a base or support.

Electrically insulating overlayer:
This subclass is indented under subclass 66. Products containing an electrically insulating overlayer specifically named or identified by chemical or physical structure.

Including radiation-conductive screen:
This subclass is indented under subclass 56. Products having grid or screen portions and interstices with the radiation-conductive layer on the grid or screen portions only.

SEE OR SEARCH THIS CLASS, SUBCLASS:
6 for screens, per se, and method of making the same.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, and subclasses 177+ for exposure, particularly subclass 181 for halftone image.

Including conductive base or support:
This subclass is indented under subclass 56. Products containing a substrate specifically named or defined by chemical or physical structure and is conductive.

Radiation-conductive composition contains carbocyclic ring only:
This subclass is indented under subclass 56. Compositions containing an organic radiation-conductive material specifically named or identified by chemical structure and which is a compound, polymer, or resin, etc., having only homocyclic ring(s) in which all ring atoms are carbon.

Polycyclo ring system:
This subclass is indented under subclass 70. Compositions wherein the homocyclic ring containing compound, etc., is polycyclic with at least two rings having two carbon atoms in common, e.g., [figure]

Substituted:
This subclass is indented under subclass 71. Compositions wherein the polycyclic ring containing compound, polymer, resin, etc., is substituted, i.e., has an atom replaced by another atom or radical, on the ring.

Containing amino or substituted amino group:
This subclass is indented under subclass 70. Compositions wherein the homocyclic ring containing compound, polymer, or resin, etc., includes an amino or substituted amino group.

Alkyl amino group:
This subclass is indented under subclass 73. Compositions wherein the amino or substituted amino group is an amine containing alkyl group attached to an amino nitrogen atom.

Radiation-conductive composition contains hetero ring:
This subclass is indented under subclass 56. Compositions containing an organic radiation-conductive material, e.g., compound, polymer, or resin, etc., having a ring which contains an atom other than carbon in its nucleus, i.e., a hetero atom.

The hetero ring has at least nitrogen as a ring hetero atom:
This subclass is indented under subclass 75. Compositions wherein at least one hetero atom present is N atom.

Additional diverse ring hetero atom in the hetero ring:
This subclass is indented under subclass 76. Compositions
wherein the N-hetero atom ring containing compound, etc., contains a hetero atom other than nitrogen, e.g., [figure]

Polycyclo ring system having the hetero ring as one of the cyclo systems:
This subclass is indented under subclass 76. Compositions wherein the N-hetero atom containing compound, etc., are polycyclic with at least two rings having two atoms in common, e.g., [figure]

Carbazole:
This subclass is indented under subclass 78. Compositions wherein the polycyclic ring containing compound, etc., contains a carbazole moiety. [figure]

Polymer or synthetic resin only:
This subclass is indented under subclass 79. Compositions wherein the carbazole moiety containing compound, etc., is part of a polymer or synthetic resin only.

Sensitized or doped:
This subclass is indented under subclass 79. Compositions wherein the carbazole moiety containing compound, etc., contains a material which is specifically named or identified by chemical structure which extends the range of spectral response or increases the radiation sensitivity in the spectral region of inherent sensitivity or regions to which said compound, etc., is spectrally sensitized.

Dye or pigment:
This subclass is indented under subclass 81. Compositions in the form of a dye or pigment.

Sensitized or doped organic radiation conductor:
This subclass is indented under subclass 56. Compositions containing a material specifically named or identified by chemical structure which extends the range of spectral response or increases the radiation sensitivity in the region of inherent sensitivity or in regions to which said composition is spectrally sensitized.

Inorganic radiation conductive composition:
This subclass is indented under subclass 56. Compositions containing an inorganic radiation-conductive material specifically named or identified by chemical structure.

Alloy:
This subclass is indented under subclass 84. Compositions in the form of a mixture of two metallic or nonmetallic elements having a metallic appearance and being a molecular or colloidal mixture.

Having more than two constituents:
This subclass is indented under subclass 85. Compositions containing more than two metallic or nonmetallic elements in the mixture.

Zinc containing:
This subclass is indented under subclass 84. Compositions wherein a zinc material is the radiation conductor.

And other radiation-conductor material:
This subclass is indented under subclass 87. Compositions containing a radiation-conductive material other than zinc material.

And nonsensitizing additive other than binder:
This subclass is indented under subclass 87. Compositions containing a material, specifically named or identified by physical or chemical structure, which does not extend the range of spectral response of the zinc material other than a binder material.

Sensitized or doped:
This subclass is indented under subclass 87. Compositions containing a material specifically named or identified by chemical structure which extends the range of spectral response or increases the radiation sensitivity in the region of inherent sensitivity or in regions to which said composition is spectrally sensitized.

Dye or pigment:
This subclass is indented under subclass 90. Compositions in the form of a dye or pigment.

Intercyclic-acyclic -CH= or Intercyclic-acyclic chain which contains -CH=:
This subclass is indented under subclass 91. Compositions containing intercyclic-acyclic -CH= or intercyclic-acyclic chain which contains -CH=, [figure]

Cyanine dye:
This subclass is indented under subclass 92. Compositions in the form of a compound which contains two distinct heterocyclic rings, each individual heterocyclic ring containing at least one nitrogen atom, said nitrogen atoms of the individual rings being joined through a resonating acyclic carbon chain which contains -CH= or a conjugated chain which contains -CH=, e.g., [figure]

Cadmium containing:
This subclass is indented under subclass 84. Compositions containing a cadmium material as the radiation conductor.

Sensitized or doped:
This subclass is indented under subclass 84. Compositions containing a material specifically named or identified by chemical structure which extends the range of spectral response or increases the radiation sensitivity, in the region of inherent sensitivity or in region to which said composition is spectrally sensitized.

Binder for radiation-conductive composition:
This subclass is indented under subclass 56. Compositions containing a material specifically named or identified by chemical structure and functioning to hold the composition together.

Post imaging process, finishing or perfecting composition or product:
This subclass is indented under subclass 31. Processes wherein the latent or visible image in or on a medium is subject to a finishing or perfecting procedure, and finishing or perfecting composition and products used in the process.

Fixing image by pressure only:
This subclass is indented under subclass 97. Processes wherein the image is made permanent by only applied pressure.

Fixing image by heated metal roller:
This subclass is indented under subclass 97. Processes wherein the image is made permanent by applying heated metal roller thereto.

Reversal development:
This subclass is indented under subclass 97. Processes wherein the finishing procedure or the medium being imaged is modified to reverse the location of the developed image. Usually the developed image is a positive print.

Impression development:
This subclass is indented under subclass 97. Processes wherein the latent image is developed by direct surface-to-surface transfer of dry powder toner to the medium. Usually the toner need not carry an electrical charge. Such developing procedures as roller, contact, touchdown, donor, and transfer developing techniques are included.

Selective toner release:
This subclass is indented under subclass 97. Processes wherein a member carrying a uniform layer of a toner is selectively released to a separate donor member based upon differences in the amount of radiation received by the medium.

Using development electrode:
This subclass is indented under subclass 97. Processes wherein the image is developed using a separate electrode which is either electronically shortened to the image carrying medium or has an electrical potential different from the image during development.

Finishing or perfecting composition or product:
This subclass is indented under subclass 97. Compositions and products useful in finishing or perfecting an image medium. Includes such finishing and perfecting processes as developing, fixing, and transferring of the image.

Developing composition or product:
This subclass is indented under subclass 104. Compositions or products used to develop the image medium.

Identified colorant, i.e., dye, dye former, pigment, etc.:
This subclass is indented under subclass 105. Compositions having chemically named ingredient that provides or is capable of providing a colored image when it deposits upon the imaged medium during development.

Magnetic or iron-containing component:
This subclass is indented under subclass 105. Subject matter containing iron in free or combined form, or other material having an active magnetic susceptibility.

Dry powder:
This subclass is indented under subclass 105. Subject matter
wherein the composition or product is in a dry powder form.

SEE OR SEARCH THIS CLASS, SUBCLASS:
106.6 for a dry powder developer which contains a magnetic active component or iron.

Identified carrier:
This subclass is indented under subclass 107. Compositions having chemically named ingredient which tribo electrically charges a toner ingredient, and is not deposited upon the imaged medium during development.

Identified toner:
This subclass is indented under subclass 107. Compositions having chemically named ingredient that deposits upon the imaged medium during development, e.g., a heat fixable agent, etc.

Identified adjuvant, i.e., charge control agent, etc.:
This subclass is indented under subclass 107. Compositions having additional chemically named ingredient that modifies the chemical, physical, or electrical properties of the developing composition, e.g., charge control agent.

Identified structure, i.e., size, shape of carrier or toner particle, etc.:
This subclass is indented under subclass 107. Compositions wherein an ingredient in the developer composition is described in terms of a physical dimension such as when the ingredient is a particle having an identified size or shape.

Liquid:
This subclass is indented under subclass 105. Compositions wherein material from a liquid medium is applied to develop the imaged medium.

Multiple phase liquid carrier medium, i.e., emulsion:
This subclass is indented under subclass 112. Compositions wherein the liquid carrier of the composition is in the form of more than one phase during development such as an emulsion.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Identified toner, i.e., identified resin coated pigment, etc.:
This subclass is indented under subclass 112. Compositions having a chemically identified ingredient that deposits upon the imaged medium during development, e.g., a novolak resin coated pigment.

Identified adjuvant, i.e., surfactant, etc.:
This subclass is indented under subclass 112. Compositions having an additional chemically identified ingredient that modifies the chemical, physical, or electrical properties of the developer composition, e.g., a surfactant.

Identified liquid carrier:
This subclass is indented under subclass 112. Compositions
wherein the liquid ingredient (which usually electrically insulated, carries the toner, and is not deposited upon the imaged medium during development) is chemically identified.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 222+ for development, particularly subclasses 237+ for electrophotos:graphic apparatus employing this type of subject matter.

Liquid development:
This subclass is indented under subclass 97. Processes wherein the image is developed by a liquid medium.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 222+ for development, particularly subclasses 237+ for electrophotos:graphic apparatus employing this type of subject matter.

Wetting development:
This subclass is indented under subclass 117. Processes wherein the liquid medium only wets the image carrying medium when an electric field is applied during development, i.e., surface tension forces are overcome by the electric field of the image.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 222+ for development, particularly subclasses 237+ for electrophotos:graphic apparatus employing this type of subject matter.

Charged solid particles deposited out of insulating liquid carrier:
This subclass is indented under subclass 117. Processes wherein electrically charged solid particles dispersed in an insulating liquid develops an image.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, subclasses 177+ for exposure, and subclasses 222+ for development, particularly subclass 239 for electrophotos:graphic apparatus employing this type of subject matter.

Dry powder developing:
This subclass is indented under subclass 97. Processes wherein the application of dry powder to an image develops that image.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 222+ for development, particularly subclasses 252+ for electrophotos:graphic apparatus employing this type of subject matter.

Cascade:
This subclass is indented under subclass 120. Processes wherein a toner adhered to a carrier bead based upon triboelectricity properties develops the image by flowing or cascading it upon the image carrying medium.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 222+ for development, particularly subclass 294 for electrophotos:graphic apparatus employing this type of subject matter.

Using magnetic brush:
This subclass is indented under subclass 120. Processes wherein a magnetic in combination with a toner attached to the magnetic by magnetic attraction develops the image.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+
for controls, and subclasses 222+ for development, particularly subclasses 267+ for electrophotos:graphic apparatus employing this type of subject matter.

Using fur brush:
This subclass is indented under subclass 120. Processes wherein a toner adhered to brush fibers based upon triboelectricity properties develops the image carrying medium.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 222+ for development, particularly subclass 287 for electrophotos:graphic apparatus employing this type of subject matter.

Fixing image:
This subclass is indented under subclass 97. Processes wherein the image is made permanent.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, subclasses 168+ for charging, subclasses 177+ for exposure, subclasses 222+ for development, and subclasses 297+ for transfer, particularly subclasses 320+ for electrophotos:graphic apparatus employing this type of subject matter.

Cleaning radiation-conductive surface:
This subclass is indented under subclass 97. Processes wherein the procedure removes undesired particles from a radiation-conductive surface so that the radiation-conductive element may be reused.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 343+ for cleaning.

Transfer of image to different surface:
This subclass is indented under subclass 97. Processes wherein an image is transferred from one surface to another surface.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, and subclasses 297+ for transfer.

Processes of making radiation-sensitive product:
This subclass is indented under subclass 31. Processes drawn to the manufacture of a radiation-sensitive product.

SEE OR SEARCH CLASS:
427, Coating Processes, particularly 74 for coating methods which result in a photoconductive product.
438, Semiconductor Device Manufacturing: Process, for methods of making photoresponsive semiconductor barrier layer-type devices (i.e., photovoltaic devices).

Coating by vacuum deposition:
This subclass is indented under subclass 127. Processes wherein the radiation-sensitive product is manufactured using a vacuum deposition procedure.

Extrusion coating:
This subclass is indented under subclass 127. Processes wherein the radiation-sensitive product is made using an extrusion coating procedure.

Thermal or energy treatment of radiation-sensitive layer,
e.g, fusing annealing, or solvent aftertreatment of radiation-sensitive layer, etc.:
This subclass is indented under subclass 127. Processes wherein the radiation-sensitive layer is made or modified by the use of heat, cold, or radiant or electrical energy.

SEE OR SEARCH CLASS:
399, Electrophotography, 9 for diagnostics, subclasses 38+ for controls, subclasses 130+ for image formation, and subclasses 177+ for exposure, particularly subclasses 218 through 221.

Applying subbing layer:
This subclass is indented under subclass 127. Processes wherein there is a specified procedure for producing a layer between the backing or base and the radiation-sensitive layer.

Applying overlayer:
This subclass is indented under subclass 127. Processes wherein there is a specified procedure for producing a layer upon the radiation-sensitive layer.

Applying radiation-sensitive layer:
This subclass is indented under subclass 127. Processes wherein there is a specified procedure for producing a radiation-sensitive layer upon a backing or base.

Heterogeneous:
This subclass is indented under subclass 133. Processes wherein the radiation-sensitive conductor ingredient is dispersed heterogeneously or nonhomo-generously throughout an insulating medium of the layer.

Process of making radiation-sensitive composition:
This subclass is indented under subclass 31. Processes drawn to the manufacture of radiation-sensitive compositions.

Utilizing high temperature, e.g., by fusing, etc.:
This subclass is indented under subclass 135. Processes wherein the radiation-sensitive compositions are made using a high temperature procedure, such as by fusing or annealing the ingredients of the compositions.

SEE OR SEARCH CLASS:
399, Electrophotography, 320 for fixing, particularly subclasses 335+.

Process of making developing composition:
This subclass is indented under subclass 31. Processes wherein the developing composition, useful in developing the imaged medium, is made.

MICROCAPSULE, PROCESS, COMPOSITION, OR PRODUCT:
This subclass is indented under the class definition. Subject matter wherein a preformed microcapsule, which is made prior to the manufacture of the product useful in radiation chemistry imagery, is added to the product, process of making and using the product, composition, or product.
(1) Note. The definition of microcapsule for this subclass includes any gas liquid or solid material which is completely surrounded by a different solid material with its largest dimension size being less than a few microns.
(2) Note. The use of microporous containing composition useful in processes under the class definition such as spongelike microporous structures or molecular sieves (zeolite) with/without absorbed or adsorbed ingredient therein are not subject matter for the subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:
31 for use of microcapsules in electric or magnetic imagery.
32 and 41, especially, for electrophoretic and migration imagery.
70 for radiation-conductive compositions in microcapsule form.
105 for developer compositions in microcapsule form; and appropriate product, process, and composition subclasses wherein (a) use of microcapsules is disclosed, but is an unclaimed feature; and (b) microporous compositions, products, and uses (see Note 2 above).

SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, 601 and 672+ for specialized micropore formation; and subclass 122 for general micropore formation for the class.
252, Compositions, subclass 62.51 for microcapsules for use in magnetic compositions.
260, Chemistry of Carbon Compounds, 722 for micropore formation in natural rubber or natural rubber in a microporous form.
264, Plastic and Nonmetallic Article Shaping or Treating: Processes, subclass 4 for microencapsulation of normally liquid material; subclass 7 for formation of coated solid particulate material directly from molten or liquid mass.
427, Coating Processes, for nonimaging processes involving use of microcapsules, especially 212 for the coating of microparticles.
428, Stock Material or Miscellaneous Articles, for nonimaging use of microcapsules in structurally defined products, especially 313.3 for cellular or por ous component such as microcapsule combined with web or sheet; and subclasses 402 for structurally defined or coated small grains or bits of matter, e.g., microcapsule with liquid or solid core, coated particulate matter.
501, Compositions: Ceramic, subclass 39 and 80+ for pore-forming compositions.
521, Synthetic Resins or Natural Rubbers, for processes of forming micropores in synthetic resins.

LUMINESCENT IMAGING:
This subclass is indented under the class definition. Processes whereby an image is obtained by reason of using material which emits light not due to incandescence and at a temperature below that of incandescent bodies. Included herein are phosphorescence, fluorescence, etc.

SEE OR SEARCH CLASS:
40, Card, Picture, or Sign Exhibiting, for indicia forming a display device including a fluorescent substance to cause illumination of the indicia.
250, Radiant Energy, 361 (362 for method) for apparatus involving invisible radiant energy responsive to electric signalling with or including a luminophor; subclasses 458+ (459 for processes) for illuminophor irradiation devices; subclasses 483+ for an invisible radiation responsive nonelectric signalling luminescent device.
252, Compositions, subclass 188.11 for chemical luminescent compositions; and subclasses 301.16+, 301.36, and 301.4+ for fluorescent and phosphorescent compositions.
313, Electric Lamp and Discharge Devices, 483 for electroluminescent devices.
427, Coating Processes, 157 for coating processes in general wherein a fluorescent or phosphorescent coating is used and where no radiation properties or multilayered luminescent coatings are claimed.
428, Stock Material or Miscellaneous Articles, appropriate subclasses for a stock material product in the form of a single or plural layer web or sheet which may have luminescent properties, and especially subclass 917 (a cross-reference art collection) for products which are electroluminescent.

PRODUCT HAVING SOUND RECORD OR PROCESS OF MAKING:
This subclass is indented under the class definition. Products having in addition to an image a sound record and process of making same.

DIAZO REPRODUCTION, PROCESS, COMPOSITION, OR PRODUCT:
This subclass is indented under the class definition.
Compositions and products having a radiation-sensitive diazo compound, i.e., a compound having at least two directly attached nitrogen atoms which are attached by double or triple bonds other than a chromophore group, e.g., diazonium, azide, quinone diazide, diazo sulfonate, or triazene compound, etc.; process wherein the radiation-sensitive diazo compound on or in a medium is imaged with radiation to produce a visible image being developed to produce a visible image of an original; process wherein the visible or latent image is not formed by the action of radiation is finished or perfected as by development, fixing, or transferring; process of making the composition and product, finishing or perfecting process such as development, or composition or product used in the finishing or perfecting process.
(1) Note. When the claimed radiation- sensitive compounds is defined functionally such as "light-decomposable agent", and all the identified radiation-sensitive compound in the claimed disclosure are diazo compounds, the patent is classified in this subclass or indented subclass.

SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for processes of using radiation-sensitive diazo material for nonvisible image formation wherein imaging affects physical property of the material.
302 especially, for making lithos:graphic printing plates.
322 for forming a relief image.

Process producing multiple image:
This subclass is indented under subclass 141. Processes wherein more than one image is formed in a medium.

Color proofing, colloid transfer, or pigment development:
This subclass is indented under subclass 142. Processes wherein the multiple images are (a) separate monochrome images disclosed or claimed for use in color proofing, (b) formed by transferring a colloid or polymer image to a separate medium whereby a visible image is obtained, or (c) formed by contacting a pigment developer to develop latent multiple images.

Powder development of tacky surface:
This subclass is indented under subclass 141. Processes wherein a tacky latent image on the surface of a medium is developed with a powder or pigment developer.

Photomechanical dye image prepared:
This subclass is indented under subclass 141. Processes wherein a dye image is formed based upon solubility differences caused by the action of electromagnetic radiation upon the medium. The solubility differences may be caused by the removal of portions of the medium.

Diazo-type process, i.e., producing dye image by reacting the diazo or the imaged reaction product of the diazo:
This subclass is indented under subclass 141. Processes wherein a dye image is formed by the reaction of the diazo compound or the imaged reaction product of the diazo compound. Usually an azo or azomethioine dye image is formed.

Negative image prepared:
This subclass is indented under subclass 146. Processes wherein the image is formed in portions of the medium subject to electromagnetic radiation or in direct proportion to the amount of electromagnetic radiation received.

To make diazo-type intermediate, black-line image, or continuous-tone image:
This subclass is indented under subclass 146. Processes wherein the dye image is an intermediate to be used for subsequent imaging, is a black-line copy, or is a continuous tone reproduction.

Liquid development, e.g., aqueous solution with coupler, etc.:
This subclass is indented under subclass 146. Processes wherein the dye image is formed by contacting the imaged medium with a liquid. Usually a positive azo dye image is obtained by reaction of the diazo compound with a coupler which may be in the medium or in the liquid.

Gaseous development, e.g., ammonia vapor, etc.:
This subclass is indented under subclass 146. Processes wherein the dye image is formed by contacting the imaged medium with a gas or vapor such as ammonia vapor. Usually the coupler is in the medium and the vapor such as ammonia provides a pH which produces an azo dye image.

Heat development:
This subclass is indented under subclass 146. Processes wherein the dye image is formed by the application of heat. Usually the dye components are brought together with the heat, or the heat catalyzes a dye forming reaction such as by producing a coupler or a basic ingredient such as ammonia.

Vesicular process:
This subclass is indented under subclass 141. Processes wherein an image in the form of radiation scattering vesicles is produced by the decomposition of the diazo compound into a volatile product.

Physical development:
This subclass is indented under subclass 141. Processes wherein a metal image formed by reaction of the diazo compound or the product produced by radiation exposure of the diazo compound in a medium is modified by replacing a more chemically active latent metal or metal of the image with a
less active metal or metal ion.

Composition or product which contains radiation sensitive compound having moiety of nitrogen double or triple bonded directly to nitrogen other than chromophore moiety, e.g., triazene containing product, etc., process of making, and composition or product used to finish or develop a diazo reproduction:
This subclass is indented under subclass 141. Compositions or products having a radiation-sensitive diazo compound, and processes of making same and composition or product used to finish or develop a diazo reproduction.

Product with at least two named layers:
This subclass is indented under subclass 154. Products having at least two named layers. The base is considered a layer for this subclass. The named layers are each significantly identified to exclude other layers. For example, a transparent or paper support having a diazo compound containing coating is considered a product. However, a support having a coating of a diazonium salt is not.

At least two radiation-sensitive layers:
This subclass is indented under subclass 155. Products having at least two radiation-sensitive layers or coatings, one of which contains a radiation-sensitive diazo compound.

Diazonium compound containing layer:
This subclass is indented under subclass 155. Products having a radiation-sensitive layer or coating containing a diazonium compound or salt.

Including subbing layer:
This subclass is indented under subclass 157. Products having a layer between base or support, and the radiation-sensitive layer.

Silicon, nitrogen, or sulfur compound containing subbing layer:
This subclass is indented under subclass 158. Products wherein the subbing layer contains a compound having a silicon, nitrogen, or sulfur atom.

Polymer containing subbing layer:
This subclass is indented under subclass 158. Products wherein the subbing layer contains a polymer. Often, the polymer is identified as a resin binder.

Acid, salt, or ester moiety ingredient containing subbing layer:
This subclass is indented under subclass 158. Products wherein the subbing layer contains a compound having an acid, salt, or ester moiety.

Including overlayer or backing layer:
This subclass is indented under subclass 157. Products having a layer or coating upon the radiation-sensitive layer, or a layer or coating on the side of the base or support opposite the side having the radiation-sensitive layer.

Diazonium salt with anion specified:
This subclass is indented under subclass 157. Products wherein the anion of the diazonium salt is named, for
example, the zinc chloride double salt or the hexafluorophosphate salt.

Diazo-N-sulfonate containing layer:
This subclass is indented under subclass 155. Products having a radiation-sensitive layer or coating containing a diazo-N-sulfonate compound.

Quinone diazide containing layer:
This subclass is indented under subclass 155. Products having a radiation-sensitive layer or coating containing a quinone diazide compound. Quinone diazides are sometimes called diazo ketones or diazo oxides. Iminoquinone diazides are considered quinone diazides for the purpose of this subclass.

Including additional layer:
This subclass is indented under subclass 165. Products having a radiation-sensitive layer and an additional layer or coating.

Azide containing layer:
This subclass is indented under subclass 155. Products having a radiation-sensitive layer or coating containing an azide compound.

Process of making diazo product:
This subclass is indented under subclass 154. Products of making a diazo product having at least two named layers.
(1) Note. See subclass 155 for a more specific definition of a diazo product.

Using specific adjuvant other than radiation-sensitive diazo compound:
This subclass is indented under subclass 168. Processes wherein a specific ingredient other than the radiation-sensitive diazo compound is used in the manufacture of the diazo product or is used to finish or perfect the diazo product.

Radiation-sensitive composition:
This subclass is indented under subclass 154. Compositions which are sensitive to radiation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
914 for diazo compounds functioning as cationic or anionic initiators in radiation activated polymer forming reactions.
919 and 920, for diazo compound functioning as free-radical initiators in radiation activated polymer forming reactions.
927 for diazo compounds functioning as cross-linking agents in radiation activated polymer forming and modifying reactions.

Diazonium compound containing:
This subclass is indented under subclass 170. Compositions wherein the radiation-sensitive diazo compound is a diazonium compound or salt.

At least two diverse diazonium compounds:
This subclass is indented under subclass 171. Compositions containing at least two different radiation-sensitive diazonium compounds or salts.

At least two couplers:
This subclass is indented under subclass 171. Compositions containing at least two different compounds which function as couplers for dye formation. The coupler compounds have auxochromic groups or are capable of producing auxochromic groups. Often times, the auxochromic group is a hydroxy substituent directly attached to an aromatic nucleus.

Includes additional adjuvant other than acidic stabilizer:
This subclass is indented under subclass 173. Compositions wherein an additional ingredient is present in the composition other than an acidic stabilizer or a coupler which is used to finish or perfect the image.
(1) Note. Ingredients having an acid moiety or acid function are excluded from this subclass.

Polymeric diazonium compound:
This subclass is indented under subclass 171. Compositions wherein the diazonium radical is an integral part of a polymer, for example, a condensation product of a diazonium compound and an aldehyde or ketone, commonly referred to in the art as a diazo formaldehyde resin or a diazonium condensate resin.

Polymeric mixture:
This subclass is indented under subclass 171. Compositions wherein the radiation-sensitive diazonium compound and a polymer are present together in admixture, e.g., a diazonium salt and polyvinyl alcohol, etc.

Processing ingredient other than coupler or carboxylic acid compound:
This subclass is indented under subclass 171. Compositions
which additionally contain a processing ingredient other than a coupler, which ingredient finishes or perfects the image.

Metal salt ingredient:
This subclass is indented under subclass 177. Compositions wherein the processing ingredient is a metal salt.

Nitrogen atom containing organic ingredient:
This subclass is indented under subclass 177. Compositions wherein the process ingredient is a nitrogen atom containing organic compound.

Naphthol coupler included:
This subclass is indented under subclass 171. Compositions which additionally contain a compound, having a hydroxy substituent directly attached to a naphthalene nucleus, which functions as a coupler for dye formation.

Phenol coupler included:
This subclass is indented under subclass 171. Compositions which additionally contain a compound, having a hydroxy substituent directly attached to a benzene nucleus, which functions as a coupler for dye formation.

Aceto-aceto or heterocyclic coupler included:
This subclass is indented under subclass 171. Compositions which additionally contain a compound, having an active methylene group between two carbonyl groups or a heterocyclic residue, which functions as a coupler for dye formation. Examples of the former are acetoacetanilide and cyclohexylacetoacetic acid amine, and of the latter are pyrazolones, hydroxy pyridones and thiobarbituric acid.

P-amino or p-thio benzene diazonium compound:
This subclass is indented under subclass 171. Compositions wherein the diazonium compound or salt has an amino or thio group attached to a benzene nucleus in the para position relative to the diazonium radical.

2,3 substitution of benzene nucleus:
This subclass is indented under subclass 183. Compositions wherein the diazonium compound or salt has additional substituents attached to the benzene nucleus in the 2 and 3 positions relative to the diazonium radical.

Additional substituent on benzene nucleus:
This subclass is indented under subclass 183. Compositions wherein the diazonium compound or salt additionally has only one other substituent on the benzene nucleus.

P-substituent is p-heterocyclic amine:
This subclass is indented under subclass 183. Compositions wherein the group attached to the para position of the benzene nucleus relative to the diazonium radical is a heterocyclic amino group, such as morpholino, piperadine, and piperazino group.

2, 5 substitution of benzene nucleus:
This subclass is indented under subclass 183. Compositions wherein the diazonium compound or salt additionally has substituents attached to the benzene nucleus in the 2 and 5 positions relative to the diazonium radical.

Diazo-N-sulfonate containing:
This subclass is indented under subclass 170. Compositions wherein the radiation-sensitive diazo compound is a diazo-N-sulfonate compound.

Quinone diazide containing:
This subclass is indented under subclass 170. Compositions wherein the radiation-sensitive diazo compound is a quinone diazide compound.
(1) Note. See subclass 165 for the definition of quinone diazides for the purposes of this class.

Polymeric quinone diazide:
This subclass is indented under subclass 189. Compositions wherein the quinone diazide moiety is an integral part of a polymer such as when the moiety is appended to a polymeric backbone with linking sulfonamide groups as in the reaction product of a p-aminostyrene polymer and an o-quinone diazide sulfonic acid.

And monomeric processing ingredient:
This subclass is indented under subclass 189. Compositions which additionally contain a monomeric processing ingredient that finishes or perfects the image.

Polymeric mixture:
This subclass is indented under subclass 189. Compositions wherein the radiation-sensitive quinone diazide compound and a polymer are present together in admixture, e.g., an o-naphthoquinone diazide compound, and a phenolformaldehyde resin such as novolak resin.

O-quinone diazide:
This subclass is indented under subclass 189. Compositions wherein the radiation-sensitive quinone diazide is an ortho substituted quinone diazide.

Azide containing:
This subclass is indented under subclass 170. Compositions wherein the radiation-sensitive diazo compound is an azide moiety containing compound, such as aromatic compounds having the azide moiety attached directly to the aromatic nuclei.

Polymeric azide:
This subclass is indented under subclass 194. Compositions wherein the azide moiety is an integral part of a polymer such as when the moiety is linked to a polymeric backbone by linking aromatic nuclei as in vinyl polymers having azidostyrene units.

And monomeric processing ingredient:
This subclass is indented under subclass 194. Compositions which additionally contain a monomeric processing ingredient that finishes or perfects the image.

Polymeric mixture:
This subclass is indented under subclass 194. Compositions wherein the radiation-sensitive azide compound and a polymer are present together in admixture, e.g., an aromatic azide compound and synthetic rubbers such as isoprene.

VISIBLE IMAGING INCLUDING STEP OF FIRING OR SINTERING:
This subclass is indented under the class definition. Processes producing a visible image and including the step of applying heat to fuse or coalesce a material.

SEE OR SEARCH CLASS:
432, Heating, subclass 13 for process of heating or heating operation including melting, vaporizing, sintering, expanding, comminuting, or classifying work material.

TRANSFER PROCEDURE BETWEEN IMAGE AND IMAGE LAYER, IMAGE RECEIVING LAYERS, OR ELEMENT CONTAINING AN IMAGE RECEIVING LAYER OR AN INGREDIENT FOR FORMING AN IMAGE RECEIVING LAYER:
This subclass is indented under the class definition. Processes forming an image, including a latent image, in a first layer by imagewise exposure of the first layer to radiation and the formation of an image in and/or on image receiving record layer during and/or after the exposure of the first layer by transfer of a material from the first layer to the record layer as a function of the imagewise exposure. Elements for use in the above processes which contain the image record receiving layer or compositions for the same.
(1) Note. For purpose of this and indented subclasses, an element can be a single layer.

SEE OR SEARCH THIS CLASS, SUBCLASS:
256 for the stripping of an entire layer containing an image from one layer and transferring it to another layer and product therefor.

SEE OR SEARCH CLASS:
360, Dynamic Magnetic Information Storage or Retrieval, 15 for record copying involving contact transfer.
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Imagewise heating, element or image receiving layers therefor or imagewise vapor and gas transfer process, element or image receiving layer therefor:
This subclass is indented under subclass 199. Processes wherein imagewise pattern of heat is applied to a layer to produce an image therein or to modify a previously formed image therein. Also, a process of imagewise vapor or gas transfer of the image to a receiving layer. Element or image receiving layer for use of any of the above processes are also included.

SEE OR SEARCH CLASS:
250, Radiant Energy, subclass 318 for non-chemical thermal recording involving image transfer.

Imagewise vapor or gas transfer process, element or image receiving layer therefor:
This subclass is indented under subclass 200. Processes wherein vapor or gas is transferred from the radiation-sensitive layer to an image receiving layer as a function of an exposure of the radiation-sensitive layer to an imagewise pattern of radiation and element or image receiving layer for use in the process.

Diffusion transfer process, element, or identified image receiving layers therefor:
This subclass is indented under subclass 199. Processes wherein the image is formed in and/or on the image receiving layer by permeation of a nongaseous material from a radiation-sensitive layer in conjunction with and during the processing, e.g., exposure, developing, fixing, etc., of the radiation-sensitive layer. Also included are the element and identified image receiving layers for the above process.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200 for thermal recording processes and elements employing diffusion transfer of a material.

By uniform application of heat, element, or image receiving layer therefor:
This subclass is indented under subclass 202. Processes wherein heat is applied in a uniform manner to the radiation-sensitive layer and/or image receiving layer at a time intermediate or during the imagewise exposure of the radiation-sensitive layer and the development of the image in the image receiving layer. Also included are the element and the image receiving layers for the above process.

Making printing plate:
This subclass is indented under subclass 202. Processes for producing a printing surface in and/or on the image receiving layer.

SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for other processes for making printing plates, and see the search note thereunder.

Including imagewise removal of image receiving layer or portion thereof:
This subclass is indented under subclass 204. Processes wherein a portion or portions of the image receiving layer are removed as a function of the imagewise exposure of the radiation-sensitive layer.
(1) Note. Removal, e.g., diffusion, etc., of a material from a portion of the record layer without substantially changing the thickness of the record layer is not included herein.

Web processing of radiation-sensitive layer or imbibition of image receiving layer or image receiving element with processing composition prior to contact with the radiation sensitive element or layer:
This subclass is indented under subclass 202. Processes wherein (a) the exposed radiation-sensitive layer is
processed by contacting it with a web containing a processing ingredient, or (b) the image receiving layer (or element) is imbibed with a processing composition for the radiation-sensitive layer prior to contacting the radiation-sensitive layer with the image receiving layer.

Element structurally defined other than containing nominal processing composition container or trap, or containing processing composition container or trap made of identified material:
This subclass is indented under subclass 202. Element having a specified structural feature other than layer arrangement or broadly defined processing composition container or trap for excess processing composition.

Having specified processing composition retaining means:
This subclass is indented under subclass 207. Element having more than a broadly recited container for retaining a processing composition prior to application of the composition.

Having specified trap:
This subclass is indented under subclass 107. Element having more than a broadly recited trap for retaining excess processing composition after application of the processing composition.

Having separable carrier sheet with processing composition container or trap permanently attached thereto:
This subclass is indented under subclass 207. Element wherein a carrier sheet having either a container or trap for the processing composition permanently attached thereto.

SEE OR SEARCH THIS CLASS, SUBCLASS:
256 for stripping process and element.

Element or identified image receiving layers for dye image formation:
This subclass is indented under subclass 202. Element or identified image receiving layers adapted for forming dye image, e.g., element containing a dye forming compound or dye mordant as a function of imagewise exposure of the radiation-sensitive layer.
(1) Note. The dye image may be formed in the image receiving layer or the radiation-sensitive layer.

Element containing silver salt sensitizer or either element or image receiving layer for use therewith:
This subclass is indented under subclass 211. Element or image receiving layers either containing radiation sensitive silver salt or a dye image receiving layer adapted to receive a diffusible dye or dye intermediate, transferred by diffusion from an element or layer comprising radiation sensitive silver salt.

Having either an identified dye mordant or image receiving layer binder other than nominal gelatin:
This subclass is indented under subclass 212. Element or receiving layers containing an identified dye mordant, i.e., ingredient which mordants diffusible dyes or dye precursor or an identified dye image receiving record layer binder other than nominal gelatin.

Having either a nonradiation sensitive scavenger layer, or an ingredient for forming scavenger or barrier layer, or an identified developing agent scavenger:
This subclass is indented under subclass 212. Element containing a nonradiation sensitive scavenger layer, other than the image receiving layer, which is not capable of preventing the diffusion therethrough of some diffusible ingredient, including water, hydrogen, and hydroxyl ions, present in the element during processing but is capable of
preventing the through diffusion of at least one other diffusible ingredient present in the element before, during, or after processing, or containing an ingredient during the processing operation which forms a scavenger or barrier layer, other than the image receiving layer, or containing an identified ingredient, other than a dye image forming compound, which reacts with silver halide developing agent or derivatives thereof to scavenge or render radiant s:graphically innocuous excess or undesired developing agent.
(1) Note. Layers impermeable to water, hydrogen ions or hydroxyl ions prior to processing the element which contains the same are not considered to be scavenger layers and ingredients for forming same.

Identified synthetic polymeric binder contained in nonradiation sensitive processing composition permeable layer other than an image receiving or neutralizing layer:
This subclass is indented under subclass 212. Element which contains a nonradiation sensitive processing composition permeable layer having an identified synthetic polymeric binder therein and is not an image receiving or a neutralizing layer.

Identified neutralizing layer or ingredient containing or dye stabilizer containing:
This subclass is indented under subclass 212. Element containing an identified neutralizing layer or ingredient adapted to adjust the pH of the processing composition during processing to more neutral pH, or containing an ingredient which stabilizes a dye image.

Silver halide identified-grain, identified emulsion binder other than nominal gelatin, or identified sensitizer or identified desensitizer containing:
This subclass is indented under subclass 212. Element containing a silver halide identified grain of specified form, e.g., size, crystal habit, etc., or a silver halide identified binder other than a nominal gelatin or a silver halide identified ingredient which performs the function of, e.g., hypersensitizing, latensifying, optical sensitizing or
desensitizing, etc.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Identified nondye image forming developing agent, silver halide development accelerator or retarder, or dye image forming accelerator or retarder containing:
This subclass is indented under subclass 212. Element containing a silver halide identified developing agent which is not an image forming dye or dye precursor, containing an identified ingredient functioning to accelerate, retard, or inhibit development of silver halide or containing an identified ingredient which effects the dye image density by accelerating or retarding the formation of a dye image forming compound or diffusion transfer rate of a diffusible dye image forming compound.
(1) Note. Included in this subclass are, e.g., auxiliary developing agents, antifoggants, silver halide development accelerators or retarders, dye solvents or gelatin softeners which accelerate dye transfer and color development accelerators.

Silver halide developing retarder or antifoggant:
This subclass is indented under subclass 218. Subject matter containing an ingredient functioning to retard the development of exposed silver halide or an ingredient which retards or prevents the formation of fog in a radiation-sensitive layer.
(1) Note. For purposes of this subclass, fog is defined as the formation of silver density in areas of the radiation sensitive silver halide layer not imagewise exposed to radiation.

Identified light absorbing, whitening, brightening, or reflecting agent other than nominal TiO[supscrpt]2[end supscrpt]:
This subclass is indented under subclass 212. Subject matter containing an identified ingredient which functions to absorb, filter, or reflect radiation and includes whiteners or brighteners and precursors thereof other than nominal TiO[supscrpt]2[end supscrpt].

pH sensitive:
This subclass is indented under subclass 220. Subject matter wherein the ingredient is capable of substantially changing its radiation reflecting or absorbing properties with a change in the pH of its environment.

Identified dye image forming compound other than colorless color developer or dye mordant containing or identified organic solvent for an incorporated ingredient:
This subclass is indented under subclass 212. Subject matter containing an identified image forming compound which is a dye or a dye precursor compound, e.g., leuco dye or color coupler, other than a dye mordant or a compound consisting essentially of a silver halide developing moiety which is not a dye or leuco dye moiety. Also containing an identified organic solvent for at least one ingredient incorporated into a layer of an element.

Redox cleavable dye or dye precursor releaser:
This subclass is indented under subclass 222. Subject matter wherein the dye image forming compound comprises a dye or dye precursor moiety and at lest one other moiety and which upon oxidation or reduction in a medium cleaves to separate the dye or dye precursor moiety from the other moiety and wherein the separated dye or dye precursor moiety has a degree of diffusibility in the element during processing substantially different from the degree of diffusibility of the uncleaved dye image forming compound in the element during processing.
(1) Note. Excluded from herein are elements containing, as the only redox cleavable dye or dye precursor releasing compound, dye image forming compound which may be oxidized during a condensation reaction with another compound and which cleaves off a dye or dye precursor moiety at their condensation reaction sites during the condensation reaction

Dye developer or leuco dye developer:
This subclass is indented under subclass 222. Subject matter wherein the dye image forming compound comprises both a silver halide developing moiety and a dye or leuco dye moiety as the same or distinct moieties.
(1) Note. A leuco dye moiety is considered to be a moiety which becomes a dye moiety after its oxidation or reduction.

Azo:
This subclass is indented under subclass 224. Subject matter wherein the dye image forming compound comprises an azo moiety (-N:N-).

Coupler with coupling-off ballast, dye or dye precursor moiety:
This subclass is indented under subclass 222. Subject matter wherein the dye image forming compound comprises a coupler moiety substituted at its coupling site with at least one other moiety selected from dye, dye precursor or ballast moieties and which is capable upon a coupling, i.e., condensation reaction, at its coupling site with another compound of cleaving the other moiety from the coupler moiety.
(1) Note. The coupler moiety need not be a color coupler moiety, i.e., a coupler moiety that forms a dye by a coupling reaction.

Element or image receiving layers for silver salt or silver
complex transfer:
This subclass is indented under subclass 202. Subject matter comprising an image receiving layer adapted to receive an imagewise distribution of diffusible silver salt or diffusible silver complex transferred by diffusion from the radiation-sensitive layer.

Having lenticular or color screen:
This subclass is indented under subclass 227. Subject matter containing a lenticular or color screen.

Permanent laminate:
This subclass is indented under subclass 227. Subject matter having a laminate adapted to be processed without delamination of the laminate intermediate the radiation-sensitive layer and image receiving layer and is adapted to form a transfer image in and/or on the image receiving layer which is viewable without delamination of the laminate intermediate the radiation-sensitive layer and the image receiving layer.

Identified silver halide grain, silver halide emulsion, binder other than nominally defined gelatin, or silver halide sensitizer or desensitizer containing:
This subclass is indented under subclass 227. Subject matter containing a radiation sensitive silver halide layer having silver halide grains of a specified form, e.g., size, crystal habit, etc., containing an identified silver halide binder other than broadly defined gelatin, or containing an identified sensitizing, e.g., optical, latensifying, or desensitizing ingredient.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems
or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Identified precipitation nuclei or image receiving layer binder containing other than nominal gelatin:
This subclass is indented under subclass 227. Subject matter containing an identified ingredient which causes, aids, or increases precipitation of silver from diffusible silver salts or diffusible silver complexes, or an identified binder other than a broadly defined gelatin, in an image receiving layer.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Identified organic polymeric image receiving layer binder other than nominal gelatin:
This subclass is indented under subclass 231. Subject matter containing an identified organic polymeric binder other than broadly defined gelatin.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Identified toning or silver transfer image stabilizing ingredient containing:
This subclass is indented under subclass 227. Subject matter containing an identified ingredient capable of reacting with a silver image to change the color of the image, including black, or containing an identified ingredient capable of stabilizing, e.g., preventing discoloration, etc., of an image formed in and/or on an image receiving layer by diffusion of a silver salt complex.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Identified developing agent or silver salt complexing agent containing:
This subclass is indented under subclass 227. Subject matter containing an identified silver halide developing agent or containing an identified ingredient capable of forming a diffusible complex or salt with silver or radiation sensitive silver salt.

Dye image formation process:
This subclass is indented under subclass 202. Processes for forming a dye image as a function of the imagewise exposure of the radiation-sensitive layer.

Using silver salt sensitizer:
This subclass is indented under subclass 235. Processes wherein a radiation sensitive silver salt is used in the radiation-sensitive layer.

Using identified neutralization layer or ingredient or separate post transfer treatment of dye image:
This subclass is indented under subclass 236. Processes employing an identified neutralization layer or ingredient which adjusts the pH of a processing composition used in forming the dye image to a substantially more neutral pH or treating a formed dye image.

Using identified dye mordant or binder other than nominal gelatin:
This subclass is indented under subclass 236. Processes employing an identified dye mordant or an identified dye image receiving layer binder other than a broadly defined gelatin.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Using identified nondye image forming developing agent, silver development accelerator or retarder, or dye image formation accelerator or retarder:
This subclass is indented under subclass 236. Processes using an identified developing agent which is not an image forming dye or dye precursor, using an identified ingredient which effects dye image density by accelerating or retarding
the formation of a dye image forming compound or the diffusion transfer rate of a diffusible dye image forming compound or employing an identified ingredient which accelerates, retards, or inhibits development of a silver halide.

Development retarder or antifoggant:
This subclass is indented under subclass 239. Processes wherein an identified ingredient is used which retards development of silver halide including an antifoggant.

Using identified dye forming compound other than colorless color developer or dye mordant or using identified organic solvent:
This subclass is indented under subclass 236. Processes using an identified dye image forming compound which is a dye or dye precursor, e.g., leuco dye or coupler, etc., other than a dye mordant or a compound consisting essentially of a silver halide, developing moiety which is not a dye or leuco dye moiety or using an identified organic solvent.

Redox cleavable dye or dye precursor releaser:
This subclass is indented under subclass 241. Processes wherein the dye image forming compound comprises a dye or dye precursor moiety and at least one other moiety which after being oxidized or reduced in a medium is cleaved separating the dye or dye precursor moiety from the other moiety to form a dye or dye precursor moiety having a substantially different diffusibility from the uncleaved dye image forming compound.

Dye developer or leuco dye developer:
This subclass is indented under subclass 241. Processes wherein the dye image forming compound comprises both a silver halide developing moiety and a dye or leuco dye moiety either as the same moiety or distinct moieties.

Silver salt transfer process:
This subclass is indented under subclass 202. Processes forming an image in or on the image receiving layer by imagewise transferring, by diffusion, a silver salt, or a silver complex from the radiation-sensitive layer to a second receiving layer.
(1) Note. The layer receiving the diffusing silver salt or complex need not be the final image receiving layer in or on which the image is formed.

Exposing through color filter element:
This subclass is indented under subclass 244. Processes forming a multicolor image record by exposing the radiation-sensitive layer to radiation from at least one color filter element.

Processing permanent laminate:
This subclass is indented under subclass 244. Processes comprising the processing of a permanent laminate.

SEE OR SEARCH THIS CLASS, SUBCLASS:
229 for definition of permanent laminate.

Using identified precipitation nuclei or identified image receiving binder other than nominal gelatin:
This subclass is indented under subclass 244. Processes employing an identified ingredient functioning to cause, aid, or increase precipitation of silver, etc., from diffusible salts or diffusible complexes or using an identified binder, other than a broadly defined gelatin, for the image receiving layer.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Including silver transfer image toning or stabilizing, or separate post transfer treatment of element or layer containing silver image:
This subclass is indented under subclass 244. Processes employing an identified ingredient which reacts with a silver image formed during processing to stabilize the silver image or to change the color of the silver image, including changing it to black, of treating a layer containing a formed silver image.

Developing with an identified silver halide developing agent:
This subclass is indented under subclass 244. Processes employing an identified silver halide developing agent.

Hydroxylamine:
This subclass is indented under subclass 249. Processes employing hydroxylamine to include substituted analogs as the developing agent.

Processing with identified silver or silver salt complexing agent:
This subclass is indented under subclass 244. Processes employing an identified ingredient which forms a diffusible salt or diffusible complex when reacted with silver or radiation sensitive silver salt.

Image layer portion transfer and element therefor:
This subclass is indented under subclass 199. Processes wherein the image is formed in the radiation-sensitive layer and a substantial continuous or discontinuous portion of the radiation-sensitive layer containing the image is transferred to the image receiving layer and the elements for use in the process.
(1) Note. Processes wherein the thickness of the radiation-sensitive layer is not substantially reduced in either a continuous or discontinuous manner are not included herein.

Separating exposed areas from unexposed or underexposed areas of image layer by transfer, element or receiving layer therefor:
This subclass is indented under subclass 252. Processes wherein portions of the radiation-sensitive layer exposed to a first quantity of radiation are at least partially separated from portions of the radiation-sensitive layer not exposed to said quantity of radiation, e.g., unexposed or underexposed portions, by transferring at least a part of one of said portions to an image receiving layer. Elements or image receiving layers for the process are also included.

Transfer process with uniform heat application and element therefor:
This subclass is indented under subclass 253. Processes wherein heat is uniformly applied to the radiation-sensitive layer during transfer and the element used for the same.

Using silver salt sensitizer and element therefor:
This subclass is indented under subclass 253. Processes wherein a radiation sensitive silver salt is used in the radiation-sensitive layer, and the element used for the same.

STRIPPING PROCESS OR ELEMENt:
This subclass is indented under the class definition. Processes of forming an image in a strippable layer, e.g., a radiation-sensitive layer, and the removal of such layer(s) by stripping the same from another layer or element to which it is (directly or indirectly) adhered, or the stripping, per se. Also, an element adapted for use in the above process.
(1) Note. The image may be formed in the stripping layer after the layer has been stripped.

SEE OR SEARCH CLASS:
156, Adhesive Bonding and Miscellaneous Chemical Manufacture, subclass 247 for process of direct contact transfer of adhered lamina from carrier to base with stripping of adhered lamina.
428, Stock Material or Miscellaneous Articles, subclass 202 for structurally defined web or sheet having intermediate discontinuous or differential layer with an outer strippable or release layer.

Forming composite image, e.g., multiple stripped image layer, etc.:
This subclass is indented under subclass 256. Subject matter wherein plural strippable layers which have been stripped from layers or elements to which they were adhered are superimposed on each other.
(1) Note. This subclass includes the formation of multicolor images by the superimposition of stripped layers containing different color images.

Forming nonplanar image:
This subclass is indented under subclass 256. Processes for forming nonplanar image in the strippable layer either before or after the stripping operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
269 for process of forming a nonplanar surface.

Element:
This subclass is indented under subclass 256. An element.

Stripping layer having radiation polymerizable or cross-linkable composition:
This subclass is indented under subclass 259. Elements containing a radiation-sensitive composition which forms an image by polymerization or cross-linking which is a stripping layer.

Strippable between two radiation-sensitive layers:
This subclass is indented under subclass 259. Elements adapted to be stripped between two electromagnetic sensitive layers.

Stripping layer containing specified synthetic nonradiation sensitive polymer:
This subclass is indented under subclass 259. Element wherein the stripping layer, i.e., a layer adapted to be stripped at its interface with another layer, comprises a specified synthetic polymer.

From ethylenically unsaturated monomer:
This subclass is indented under subclass 262. Element wherein the polymer is derived from ethylenically unsaturated monomers, e.g., vinyl polymers, etc.

SILVER HALIDE COLLOID TANNING PROCESS, COMPOSITION, OR PRODUCT:
This subclass is indented under the class definition. Processes wherein a radiation sensitive silver halide and polymer containing medium is imaged with radiation to (a) decrease the solubility to a developing solvent in imaged areas, (b) increase the oleophilic property in imaged areas, or (c) to produce a high contrast, viz, gamma significantly above unit gamma such as a gamma of 2.0 silver image, in radiation exposed areas of the medium; radiation sensitive composition and product used in the process and used solely after image processing, as a printing plate or electrical device; also a finishing or perfecting composition and product used in the process.
(1) Note. Included herein are those processes wherein an oleophilic radiation insolubilized image is formed in radiation exposed areas of the medium.

Process using lithos:graphic infectious developer:
This subclass is indented under subclass 264. Processes wherein the imaged radiation medium is finished or perfected with a composition having a reducing agent for a latent silver image which produces a silver image, a printing plate, or an electrical device, etc.

And polymer or nonpolymer condensation reaction product:
This subclass is indented under subclass 265. Processes wherein a polymer or nonpolymeric condensation reaction product is used during the finishing or perfecting procedures.

And heterocyclic additive:
This subclass is indented under subclass 265. Processes wherein a heterocyclic compound is used during the finishing or perfecting procedure.

Infectious developer composition:
This subclass is indented under subclass 264. Compositions having a reducing agent for latent silver image used to finish or perfect the imaged radiation sensitive medium by producing a silver image, a printing plate, or an electrical device, etc.

IMAGING AFFECTING PHYSICAL PROPERTY OF RADIATION SENSITIVE MATERIAL, OR PRODUCING NONPLANAR OR PRINTING SURFACE - PROCESS, COMPOSITION, OR PRODUCT:
This subclass is indented under the class definition. Processes wherein an image (a) is produced in an imaged medium based upon physical property (e.g., hardness, tackiness, solubility, swellability, vaporization, refractive index) difference in the medium caused by the amount of type or radiation received by the medium, and when the physical property difference in the medium is not caused by the amount or type of radiation received by the medium, the image is finished or perfected as by developing or fixing, (b) formed in a medium is a nonplanar image, i.e., image areas of the medium are elevated or lowered relative to the rest of the medium, or (c) formed in a medium and is used as or to form a printing surface; radiation-sensitive composition and product used in the process; process of making the radiation-sensitive composition and product; or finishing or perfecting composition or product used in the process.

SEE OR SEARCH THIS CLASS, SUBCLASS:
408 for photosolubilization processes involving a positive image.

SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, appropriate subclasses, particularly Class 523, subclass 136 for a composition containing a synthetic resin which is resistant to, yet does not absorb, radioactive materials or cathode rays or to processes of preparing said composition.

Radiation sensitive composition or product or process of making:
This subclass is indented under subclass 269. Radiation sensitive composition or product and the process of making the composition or product.

Optical recording nonstructural layered product having a radiation sensitive composition layer claimed or solely disclosed as optically recordable and optically machine readable:
This subclass is indented under subclass 270.1. Subject matter wherein a non-structural plural layered product having a radiation sensitive composition containing layer is claimed or solely disclosed for use as a carrier of optically recorded and optically machine readable information.
(1) Note. This subclass expressly excludes products designated as resists or printing plates.

SEE OR SEARCH THIS CLASS, SUBCLASS:
945 a cross-reference art collection for materials recorded upon using a laser.

SEE OR SEARCH CLASS:
346, Recorders; particularly, subclass 134 [supscrpt]+[end supscrpt] for a single or plural layer web or sheet which is disclosed as a record receiver solely for use with apparatus provided for in (1) and (2) of the definition of that class.
(1) Note. A web or sheet which has chart graduations (e.g., graph, etc.) thereon is assigned to Class 346, subclass 135.1, regardless of its disclosure.
365, Static information storage and retrieval; for apparatus or corresponding processes for the static storage and retrieval of information, particularly subclass 106 [supscrpt]+[end supscrpt] for radiation altering of a condition or state of a memory material or element in accordance with the information stored.
369, Dynamic information storage or retrieval; particularly subclass 272.1 [supscrpt]+[end supscrpt], for a record carrier, per se, having specific information storage structure.
(1) Note. The characteristic variation is one which must be retrievable by a transducer. Such variation producing only a directly perceptible indication (e.g., a graph) is classified in Class 346.
428, Stock Material or Miscellaneous Articles, provides for stock-liquid crystal, an article having a latent or developable image formed other than by use of radiation, and nonradiation sensitive stock material disclosed for use in radiation imagery.
(1) Note. A web or sheet disclosed as a record receiver of general utility, or for multiple uses, at least one of which is other than for a recorder apparatus provided for in Class 346, is classified in the appropriate subclass in Class 428, with a cross-reference to Class 346, if appropriate.
(2) Note. A disc with or without grooves which does not include recorded information is classified in Class 428, subclasses 64.1[supscrpt]+[end supscrpt].

Having read-write layer of 100 per cent inorganic composition:
This subclass is indented under subclass 270.11. Subject matter wherein the radiation sensitive composition containing layer contains only inorganic material.

Which changes phase during recording:
This subclass is indented under subclass 270.12. Subject matter wherein at least some of the inorganic material is capable of undergoing a phase change upon optical recording (e.g., crystalline to amorphous, etc.).

Having read-write layer of 100 per cent organic or organometallic composition or mixtures thereof:
This subclass is indented under subclass 270.11. Subject matter wherein the radiation sensitive composition containing layer contains only organic material or a metal complex of organic material or mixtures thereof.
(1) Note. The term "organic material" as used herein means a material within the main Class definition of Class 260, Chemistry of Carbon Compounds.

Containing non-polymeric chromophore:
This subclass is indented under subclass 270.14. Subject matter wherein the radiation sensitive composition containing
layer contains a chromophore which is not attached to a polymer.

Organometallic containing:
This subclass is indented under subclass 270.15. Subject matter wherein the non-polymeric chromophore is a metal complex of an organic material.

Naphthalocyanine:
This subclass is indented under subclass 270.16. Subject matter wherein the organometallic is a metal complex of naphthalocyanine (i.e., a compound containing four isobenzoindole rings linked in a sixteen membered ring of alternating carbon atoms and nitrogen atoms around a central metal atom).

Having methine linkage:
This subclass is indented under subclass 270.15. Subject matter wherein the nonpolymeric chromophore has a methine linkage (i.e., -CH=).

And containing quencher or stabilizer:
This subclass is indented under subclass 270.18. Subject matter wherein, in addition to the non-polymeric chromophore, the radiation sensitive composition containing layer contains material which prevents fading or degradation thereof.

Cyanine chromophore:
This subclass is indented under subclass 270.18. Subject matter wherein the methine linkage containing non-polymeric chromophore is a compound which contains two distinct heterocyclic rings, each individual heterocyclic ring
containing at least one nitrogen atom, said nitrogen atoms of the individual rings being joined through a resonating acyclic carbon chain which contains the methine linkage (i.e., -CH=) or a conjugated chain which contains the methine linkage (i.e.,-CH=).

Indolenic cyanine chromophore:
This subclass is indented under subclass 270.2. Subject matter wherein at least one of the heterocyclic rings of the cyanine is a substituted or unsubstituted indole moiety (i.e., 2,3-benzopyrrole).

Identified backing or protective layercontaining:
This subclass is indented under subclass 270.1. Subject matter wherein a backing or protective layer of the medium is specifically named.

Silicon containing backing or protective layer:
This subclass is indented under subclass 271.1. Subject matter wherein the backing layer or the protecting layer contains silicon.

Identified overlayer on radiation-sensitivelayer:
This subclass is indented under subclass 271.1. Subject matter wherein the radiation-sensitive layer is provided with an identified overlayer.

And radiation-sensitive chromium compound:
This subclass is indented under subclass 271.1. Subject matter wherein the medium includes a radiation-sensitive chromium compound.

Metal as backing or protective layer:
This subclass is indented under subclass 271.1. Subject matter wherein the backing or protective layer is metal.

And another backing or protective layer other than aluminum oxide:
This subclass is indented under subclass 275.1. Subject matter wherein a different layer is included in the medium other than a metal backing or protective layer.
(1) Note. See subclass 525 for a more specific definition of another backing layer.

SEE OR SEARCH THIS CLASS, SUBCLASS:
278.1 for aluminum oxide used in a backing layer.

Copper:
This subclass is indented under subclass 275.1. Subject matter wherein the metal is copper.

Aluminum:
This subclass is indented under subclass 275.1. Subject matter wherein the metal is aluminum.
(1) Note. Aluminum backing with aluminum oxide or oxide surface or layer are included herein.

Zinc or magnesium:
This subclass is indented under subclass 275.1. Subject matter wherein the metal is zinc or magnesium.

Radiation sensitive composition comprising oxirane ring containing component:
This subclass is indented under subclass 270.1. Subject matter wherein the radiation sensitive composition includes an ingredient containing a three membered ring having two carbons and one oxygen atom.

Radiation sensitive composition comprising ethylenically unsaturated compound:
This subclass is indented under subclass 270.1. Subject matter wherein the radiation sensitive composition includes an ethylenically unsaturated ingredient.

N-vinylidene:
This subclass is indented under subclass 281.1. Subject matter wherein the ethylenically unsaturated ingredient is an n-vinylidene compound (HC=C=).

Amide:
This subclass is indented under subclass 281.1. Subject matter wherein the ethylenically unsaturated ingredient has an amide moiety.

Urethane:
This subclass is indented under subclass 283.1. Subject matter wherein the ethylenically unsaturated ingredient has a urethane moiety.

Polyester:
This subclass is indented under subclass 281.1. Subject matter wherein the ethylenically unsaturated ingredient is a polyester.

Resin or prepolymer containing ethylenical unsaturation:
This subclass is indented under subclass 281.1. Subject matter wherein the ethylenically unsaturated ingredient is a resin or prepolymer with ethylenic unsaturation in the main chain of the resin or prepolymer (see (1) Note in subclass 287.1).

Ethylenic unsaturation within the side chain component:
This subclass is indented under subclass 286.1. Subject matter wherein the ethylenically unsaturated ingredient is a resin or prepolymer with ethylenic unsaturation in the side chain of the resin or prepolymer.
(1) Note. Prepolymer for this subclass definition excludes monomer compounds having no recurring units.

Plural, terminal unsaturation:
This subclass is indented under subclass 281.1. Subject matter wherein the ethylenically unsaturated ingredient has plural, terminal unsaturation.

Radiation sensitive chromium compound:
This subclass is indented under subclass 270.1. Subject matter wherein the radiation sensitive composition includes a radiation sensitive chromium compound.

Light scattering or refractive index image formation:
This subclass is indented under subclass 269. Processes wherein the image produced in the medium is light scattering or in the form of a refractive index differential in the medium.

Post imaging treatment with particles:
This subclass is indented under subclass 269. Processes wherein the image medium is contacted with a dry particulate material to form an image.

Readily visible image formation:
This subclass is indented under subclass 269. Processes wherein the image produced in the medium is readily discernible to the viewer.
(1) Note. Many images produced in processes under subclass 269 may be visible as disclosed in the patent specification such as lithos:graphic or relief printing plate. However, unless the patent claims expressly pertain to including a visible color forming ingredient in the medium, a readily discernible image to the viewer is not obtained for classification purposes in this and indented subclasses.

SEE OR SEARCH THIS CLASS, SUBCLASS:
300 for images that may be visible but the claimed image is specific to some use, such as printing plate use.

Color proofing or multicolor image formation:
This subclass is indented under subclass 292. Process wherein the image is used for color proofing or is a multicolor image.
(1) Note. A multicolor image is one in which the color-forming ingredient, layer, or element absorbs light in different areas of the visible light spectrum, e.g., absorbs magenta and cyan or red and green.

By solvent removal:
This subclass is indented under subclass 291. Process wherein the readily discernible image is produced by removing a portion of the imaged medium.

Making ornamental design:
This subclass is indented under subclass 292. Processes wherein the image is in the form of an ornamental design, such as an adornment placed on an article.

Electron beam imaging:
This subclass is indented under subclass 269. Processes wherein the radiation used for imaging the medium is in the form of an electron beam.

Simultaneous radiation imaging and etching of substrate:
This subclass is indented under subclass 269. Processes wherein radiation imaging of a radiation-sensitive layer of the medium is performed simultaneously with removal of portions of the medium beneath the imaged radiation-sensitive layer.
(1) Note. Simultaneously, for this subclass definition means that the radiation imaging and etching (removal) are performed concurrently in time.

Simultaneous radiation imaging and deposition of material on substrate:
This subclass is indented under subclass 269. Processes wherein radiation imaging of a radiation-sensitive layer of the medium is performed simultaneously with deposition of material on portions of the medium beneath the image radiation-sensitive layer.
(1) Note. Simultaneously, for this subclass definition
means that the radiation imaging and deposition are performed concurrently in time.

Simultaneous developing a resist image and etching a substrate:
This subclass is indented under subclass 269. Processes wherein the image radiation-sensitive layer of the medium is developed to remove portions of the layer simultaneously with removal of portions of the medium beneath the imaged radiation-sensitive layer.
(1) Note. Simultaneously, for this subclass definition means that the developing and etching (removal) are performed concurrently in time.

Making printing plates:
This subclass is indented under subclass 269. Processes wherein the image is used as or to form a printing plate.

Multicolor:
This subclass is indented under subclass 300. Processes wherein the printing plate is used to produce a multicolor reproduction.

Lithos:graphic:
This subclass is indented under subclass 300. Processes wherein ink adheres to the surface of the printing plate based upon oleophilic and oleophobic, or hydrophilic or hydrophobic differences at the surface of the plate which ink is capable of transfer onto a surface to be printed producing a reproduction.

Driography:
This subclass is indented under subclass 302. Processes wherein prior to adhering ink to the surface of the printing plate, a fountain solution is not used to increase the differences.

Coating over colloid image and removal of colloid image to leave reversed image in coating, i.e., deep etch:
This subclass is indented under subclass 302. Processes wherein the image is obtained by overcoating an imaged and developed radiation-sensitive layer with a material which remains after removal of the image and developed layer.
(1) Note. The processing procedure of this subclass produces a reversal of the location of the image used as or to form a printing plate.

Continuous tone or collotype:
This subclass is indented under subclass 302. Processes wherein the reproduction is a continuous tone image.

Relief:
This subclass is indented under subclass 300. Processes wherein the printing plate produces a reproduction based on ink transfer onto a surface to be printed from the heights of an imaged medium having raised areas.

Intaglio or gravure:
This subclass is indented under subclass 300. Processes wherein the printing plate produces a reproduction based on ink transfer onto a surface to be printed from the valleys of an imaged medium having lowered areas.

Stencil:
This subclass is indented under subclass 300. Processes wherein the printing plate produces a reproduction by forcing ink through an impervious perforated material onto a surface to be printed.

Post imaging process:
This subclass is indented under subclass 300. Processes wherein a process procedure after imaging is used to finish or perfect the printing plate.

Including etching of substrate:
This subclass is indented under subclass 309. Processes wherein the process procedure is removal of portions of the medium beneath the imaged radiation-sensitive layer.

Making electrical device:
This subclass is indented under subclass 269. Processes wherein the image is used as or to form an electrical device.

SEE OR SEARCH CLASS:
438, Semiconductor Device Manufacturing: Process, appropriate subclass for methods of making semiconductor devices; see search notes therein.

Including multiple resist image formation:
This subclass is indented under subclass 311. Processes wherein the imaged medium is developed to form more than one resist image.
(1) Note. A resist image is an image formed by removal of portions of the imaged radiation-sensitive layer of the medium.
(2) Note. Processes found in this subclass include those wherein there are multiple imaging and developing steps; a single imaging and multiple developing step; or multiple imaging and single developing steps.

With formation of resist image, and etching of substrate or material deposition:
This subclass is indented under subclass 311. Processes wherein the image is developed to form a resist image in the medium, and portions of the medium not covered by the resist image are removed or have material deposited thereon.
(1) Note. See (1) Note in subclass 312 for the definition of resist image.

SEE OR SEARCH CLASS:
216, Etching a Substrate: Processes, for disclosure (nonclaimed) of forming an image by radiation imagery and involving a claimed post imaging etching process.

Etching of substrate and material deposition:
This subclass is indented under subclass 313. Processes wherein portions of the medium are removed and material is deposited on the medium.

Material deposition only:
This subclass is indented under subclass 313. Processes wherein only material is deposited on the medium not covered by the resist image.

Multiple etching of substrate:
This subclass is indented under subclass 313. Processes wherein portions of the medium are removed using more than one etching procedure.

Insulative or nonmetallic dielectric etched:
This subclass is indented under subclass 313. Processes wherein the portion of the medium being removed is an insulative or dielectric (nonmetal) material.

Metal etched:
This subclass is indented under subclass 313. Processes wherein the portion of the medium being removed is a metal.

Named electrical device:
This subclass is indented under subclass 311. Processes wherein the electrical device is specifically identified, e.g., a printed circuit or a mesa transistor, etc.

Making named article:
This subclass is indented under subclass 269. Processes wherein the imaged medium is used for making a specifically identified article.

Optical device:
This subclass is indented under subclass 320. Processes wherein the article is an optical device.

SEE OR SEARCH THIS CLASS, SUBCLASS:
4 for optical devices which are useful for imaging, such as a photo mask, and process of making those devices.

SEE OR SEARCH CLASS:
216, Etching a Substrate: Processes, for disclosure (nonclaimed) of forming an image by radiation imagery and involving a claimed post imaging etching process.

Forming nonplanar surface:
This subclass is indented under subclass 269. Processes wherein imaged areas of the medium are elevated or lowered relative to the rest of the medium.

Including etching substrate:
This subclass is indented under subclass 322. Processes wherein portions of the medium beneath an imaged layer in the medium are removed.

Including material deposition:
This subclass is indented under subclass 322. Processes wherein portions of the medium beneath an imaged layer in the medium have material deposited thereon.

Post image treatment to produce elevated pattern:
This subclass is indented under subclass 322. Processes wherein the imaged medium is treated to produce an image in the form of raised pattern, e.g., by removal of soluble material in radiation unexposed areas of a radiation layer, etc.

Pattern elevated in radiation unexposed areas:
This subclass is indented under subclass 325. Processes wherein the imaged medium is treated to produce an image in the form of an elevated pattern in radiation unexposed areas of the medium, i.e., by removal of soluble material in radiation exposed areas of a radiation-sensitive layer.

Processing feature prior to imaging:
This subclass is indented under subclass 269. Processes wherein there is a perfecting procedure prior to imaging the medium.

Post imaging radiant energy exposure:
This subclass is indented under subclass 269. Processes wherein there is a perfecting or finishing procedure subsequent to imaging the medium.

Removal of imaged layers:
This subclass is indented under subclass 269. Processes wherein the imaged and developed layer of the medium is removed subsequent to development.

Including heating:
This subclass is indented under subclass 269. Process wherein heat is used to image, perfect, or finish an image in the medium.

Finishing or perfecting composition or product:
This subclass is indented under subclass 269. Composition or product used to finish or perfect an image in the medium.

DYE IMAGE FROM RADIATION SENSITIVE DYE OR DYE FORMER BY DRY PROCESSING, COMPOSITION, OR PRODUCT:
This subclass is indented under the class definition. Subject matter wherein a radiation sensitive dye or dye former in a medium is imaged with electromagnetic radiation
to produce a print out dye image, bleach out dye image, or latent image which is developed to a visible image by dye processing, e.g., photochromic dyestuff, print out dyestuffs, photo bleachable dyestuff, leuco dyestuffs, etc., also radiation sensitive composition and product used in the process, and process of making the same.
(1) Note. A dye for the purpose of this and indented subclasses is any colored (including black) organic compound.

Multiple image formation, multiple image exposure, or simultaneous radiant energy exposure:
This subclass is indented under subclass 332. Processes wherein more than one image is formed in the medium, more than one imaging exposure of the medium is employed, or the radiant energy utilized during the imaging exposure is from different portions of the electromagnetic spectrum.

Positive image formation from radiation sensitive dye former:
This subclass is indented under subclass 332. Processes wherein the image is formed in portions of the medium not subject to electromagnetic radiation or inversely proportional to the amount of electromagnetic radiation received.

Pretreatment processing before imaging, e.g., overall radiant energy exposure, etc.:
This subclass is indented under subclass 332. Processes wherein the medium to be imaged is subject to a processing procedure prior to imaging.

Developing latent image using radiant energy or heat:
This subclass is indented under subclass 332. Processes wherein the latent image is developed with radiant energy such as infrared radiation or heat such as by contact with a
hot body.

Fixing or stabilizing image:
This subclass is indented under subclass 332. Processes wherein the image is made permanent or temporarily permanent, viz, only a special procedure would remove the image, etc.

Composition or product:
This subclass is indented under subclass 332. Composition and product made by the process of the class and the process of making the same not otherwise provided.

Radiation sensitive bleachable dyestuff:
This subclass is indented under subclass 338. Compositions containing a compound having a chromophore group such as an azo moiety, which upon exposure to electromagnetic radiation becomes colorless or less brightly colored.

Identified sensitizer containing:
This subclass is indented under subclass 338. Subject matter containing a radiation sensitizer which is itself not a dye or dye former.

Metal salt or complex:
This subclass is indented under subclass 340. Subject matter containing a radiation sensitive metal salt or complex.

Sulfur compound:
This subclass is indented under subclass 340. Compositions and products containing a radiation sensitive compound having a sulfur atom.

Heterocyclic:
This subclass is indented under subclass 340. Compositions and products containing a radiation sensitive compound having a heterocyclic ring.

Halogen compound:
This subclass is indented under subclass 340. Subject matter containing a radiation sensitive compound having a halogen atom.

Spiropyran dye or dye former:
This subclass is indented under subclass 338. Subject matter containing a radiation sensitive spiropyran compound, e.g., benzospiropyran, etc.

VISIBLE IMAGING USING RADIATION ONLY OTHER THAN HEATING BY SURFACE CONTACT OR CONVECTION:
This subclass is indented under the class definition. Processes using only radiation to produce a visual image by either forming the same or rendering a latent image visible (developing).
(1) Note. The term "heat" in a claim without further limitation will not place a patent in this subclass, but rather in subclass 348 below.

SEE OR SEARCH CLASS:
250, Radiant Energy, 330 for nonchemical infrared to visible imaging.
346, Recorders, subclass 76.1 for pyros:graphic or
thermochemical recorder for recording phenomenal information.
347, Incremental Printing of Symbolic Information, 224 for radiation marking apparatus, and subclasses 129+ for electrostatic marking apparatus including photo scanning device.
427, Coating Processes, subclass 542, 557+ and 595+ for infrared or radiant heat rendering a coating visible.

COMBINED:
Subject matter of this class not provided for below combined with subject matter of another class.

THERMOGRAPHIC PROCESS:
This subclass is indented under the class definition. Processes wherein radiant heat (heat applied by means which does not touch the radiant sensitive receiver) is used to form the image or heat is used in some phase of the process of image formation.

SEE OR SEARCH THIS CLASS, SUBCLASS:
99 for fixing an electric or magnetic image by a heated metal roller.
151 for heat development of diazo-type process.
198 for visible imaging including firing or sintering.
203 for diffusion transfer process using heat.
330 for imaging affecting physical property of radiation sensitive material, or producing nonplanar or printing surface including heating.
346 for forming a visible image or rendering visible a latent image by use of radiation only.
363 for laser exposure in a color process.
616 for composition for visible imaging by radiation only.

SEE OR SEARCH CLASS:
250, Radiant Energy, 316.1 for infrared or thermal pattern
recording.
252, Compositions, subclass 70 for thermostatic or thermophoric compositions.
346, Recorders, subclass 76.1 for phenomenal recorders wherein heat is involved in the recording operation.
347, Incremental Printing of Symbolic Information, subclass 113 for electrostatic recorders in which a latent image is made visible by applying heat to cause a plastic deformation of a charged medium, subclass 114 for electrothermos:graphic, subclasses 171+ and 224+ for thermal and radiation marking apparatus and processes.
360, Dynamic Magnetic Information Storage or Retrieval, subclass 59 for thermomagnetic recording.
427, Coating Processes, subclass 542, 557+ and 595+ for infrared energy or radiant heating applied to a coating.

Heat applied before imaging:
This subclass is indented under subclass 348. Subject matter including the step of applying heat prior to imaging, e.g., for sensitizing, after coating, etc.

Heat applied after imaging:
This subclass is indented under subclass 348. Subject matter including the application of heat subsequent to imaging, e.g., sensitize or perfect the image, etc.

Color development:
This subclass is indented under subclass 350. Processes wherein an elevated temperature (includes gas or vapor treatment) is applied in the formation of a color image.

SEE OR SEARCH THIS CLASS, SUBCLASS:
357 for the production of a colored image.

During stabilization:
This subclass is indented under subclass 350. Processes wherein an elevated temperature is applied to stabilize the image.

During dry development:
This subclass is indented under subclass 350. Processes wherein an elevated temperature is applied during development and no solutions are used. Radiation thermos:graphic process systems are included herein.

Including generation of vapor, moisture, etc.:
This subclass is indented under subclass 353. Processes wherein a vapor, moisture, gas, etc., is produced during the development, but the final product is dry to touch after processing.

During solvent development:
This subclass is indented under subclass 350. Processes wherein an elevated temperature is applied during development in which solution is used.

ACHROMATIC IMAGE PRODUCED FROM CHROMATIC REPRODUCTION IMAGE:
This subclass is indented under the class definition. Processes for producing achromatic, i.e., black, white, or grey images from chromatic, i.e., color reproduction images, e.g., preparation of color separation records from multicolor reproduction materials.

SEE OR SEARCH THIS CLASS, SUBCLASS:
401 for achromatic image preparation wherein chromatic reproduction images are not used as an original.

COLOR IMAGING PROCESS:
This subclass is indented under the class definition. Processes for producing chromatic from nonspecified radiation sensitive material and either named or unnamed colorant or color producing material.
(1) Note. The image must be chromatic (colored) and not achromatic (black, white, or grey).
(2) Note. Free metal image, per se, as the final image is not included herein as a color image.

SEE OR SEARCH THIS CLASS, SUBCLASS:
1 for holos:graphic color process, composition, or element.
9 for colored image product.
31 for electric or magnetic imagery color process, composition, or product.
141 for diazo color process, composition, or element.
211 for transfer color process.
269 for photopolymer color process, composition, or element.
332 for radiation-sensitive dye and dye former process, composition, or element.
348 for thermos:graphic color process.
449 for nonradiation-sensitive compositions used to form either chromatic or achromatic images or both.
495 for radiation-sensitive color element.
541 for named radiation-sensitive compositions.

Color proofing:
This subclass is indented under subclass 357. Processes for producing color proofs or colored facsimile of a colored print or design.

SEE OR SEARCH THIS CLASS, SUBCLASS:
22 for registering one or more images with the radiation sensitive medium to be imaged.
143 for color proofing of a diazo color image.

Color correcting:
This subclass is indented under subclass 357. Processes for correcting unwanted spectral absorption by color images, e.g., preventing color mixing in a reversal process, etc.

Correcting by silver image:
This subclass is indented under subclass 359. Processes for using a silver image to correct unwanted spectral adsorption.

SEE OR SEARCH THIS CLASS, SUBCLASS:
364 for the production of a final color and silver image where the silver image is not for the purpose of color correction.

Correcting by color image produced by oxidizing bath treatment:
This subclass is indented under subclass 359. Processes for using a colored image produced by treatment in an oxidizing medium, e.g., reaction of residual coupler with oxidized developer, etc., to correct unwanted spectral adsorption.

Correcting by interimage effect:
This subclass is indented under subclass 359. Processes for using an interimage effect, e.g., by adding a compound to an interlayer, etc., to correct unwanted spectral adsorption.

Laser or radiation exposure other than visible light:
This subclass is indented under subclass 357. Processes for exposing material with a laser or forms of radiation other than visible light.

SEE OR SEARCH THIS CLASS, SUBCLASS:
200 for imagewise heat exposure in a transfer process.
348 for imagewise heat exposure.

Forming combined chromatic and achromatic images:
This subclass is indented under subclass 357. Processes for forming both a chromatic and achromatic image as the final image.

SEE OR SEARCH THIS CLASS, SUBCLASS:
356 for the production of achromatic images from chromatic reproduction images.
360 for the use of an achromatic image to correct a chromatic image.
367 369 and 370, for the production of chromatic images from achromatic reproduction images.

Forming multicolor image in a single layer:
This subclass is indented under subclass 357. Processes for producing images having more than one color in a single layer.
(1) Note. Included herein is the production of color in a multilayered material wherein one or more layers contain two or more color images.

SEE OR SEARCH THIS CLASS, SUBCLASS:
383 for the production of a multicolor image from color couplers wherein the layers of a multicolor material contain only one color.
549 for silver compound radiation sensitive compositions containing two or more couplers.

Resensitizing:
This subclass is indented under subclass 357. Processes for producing second and subsequent color images from resensitized radiation sensitive materials, e.g., by rehalogenation or coating a radiation sensitive material onto an imaged layer, etc.

Chromatic image produced from achromatic reproduction image:
This subclass is indented under subclass 357. Processes for producing a colored image from a visible, finished achromatic image. This process may involve coloring of the achromatic image itself, e.g., by hand painting or the use of an achromatic image in a process of reproduction to yield a colored image.
(1) Note. Included herein is the production of color images by using metal images other than silver when used in the silver dye bleach or color reversal process.

Blue or brown print forming:
This subclass is indented under subclass 367. Processes wherein a radiation sensitive iron compound containing medium is imaged to produce a blue or blue-like image, or a brown or brown-like image.

Viewing through either a colored filter or a colored light:
This subclass is indented under subclass 367. Processes including the step of observing the achromatic image through either a colored filter or a colored light.

SEE OR SEARCH THIS CLASS, SUBCLASS:
245 for step exposing through filter to produce an achromatic image in the diffusion transfer process.

Toning:
This subclass is indented under subclass 367. Processes for producing the chromatic image by reacting a metal or metal salt achromatic image with an inorganic colorant.

SEE OR SEARCH THIS CLASS, SUBCLASS:
248 for toning a silver image formed by diffusion transfer.
367 for toning a metal image with an organic colorant.

Mordanting:
This subclass is indented under subclass 357. Processes for forming a final colored image by mordanting a dye to the image site.

SEE OR SEARCH THIS CLASS, SUBCLASS:
213 for dye mordanting in a diffusion transfer process.

Stabilizing:
This subclass is indented under subclass 357. Processes for stabilizing a dye image against the fogging or staining effect of heat ultraviolet, storage, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
216 for dye image stabilization in a diffusion transfer process.

Intensifying:
This subclass is indented under subclass 357. Processes wherein the density of the dye image is increased.

Using identified radiation sensitive composition in the formation of color image:
This subclass is indented under subclass 357. Processes for producing a colored image using identified radiation sensitive materials, e.g., titanium dioxide, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
357 for process using generic radiation sensitive materials.
541 for radiation sensitive compositions used in the process.

Silver compound sensitizer:
This subclass is indented under subclass 374. Processes using a silver compound radiation sensitive material.

SEE OR SEARCH THIS CLASS, SUBCLASS:
542 for the silver compound radiation sensitive compositions.

And coupler:
This subclass is indented under subclass 375. Processes including the use of color coupler (which can be located in the composition, element, or processing medium).
(1) Note. Included herein are couplers which produce dyes wherein the color is not named or dyes wherein the color is other than cyan, magenta, or yellow.

SEE OR SEARCH THIS CLASS, SUBCLASS:
402 for achromatic images from couplers.
543 for radiation sensitive compositions used in this process.

And binder, coating aid, solvent, emulsifier, hardener, chemical sensitizer, or optical sensitizer:
This subclass is indented under subclass 376. Processes using identified binder, coating aid, solvent, emulsifier,
hardener, hypersensitizers or optical sensitizers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
378 for process involving use of optical desensitizer in fogged silver halide emulsion.
382 for process using dye or development inhibitors.
543 for compositions used in this process.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Direct positive process:
This subclass is indented under subclass 376. Processes for producing a direct positive color image. Included herein are processes involving radiation sensitive silver compound compositions which form direct positive images on exposure and development which images are used in the formation of color images. The unexposed portions rather than the exposed portions are developed during initial development. Also, processes involving couplers which react with oxidized developer in the exposed areas to form colorless products and which are oxidized in unexposed regions to form color images.

SEE OR SEARCH THIS CLASS, SUBCLASS:
359 for the direct positive color image which is used for color correction.
379 for positive color images formed by reversal processing.
547 for compositions used in the process of this subclass.

Reversal process:
This subclass is indented under subclass 378. Processes
wherein the radiation sensitive silver compound left after the first negative development is used for forming a positive color image.
(1) Note. The couplers used in the process can be in the emulsion layers or in the developing compositions.

SEE OR SEARCH THIS CLASS, SUBCLASS:
378 for production of direct positive color image.

And developer other than or in addition to p-phenylenediamine or derivative thereof:
This subclass is indented under subclass 376. Processes including the use of a developer other than or in addition to a compound containing the p-phenylenediamine or derivatives or combinations thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:
379 for use of plural developers in a reversal process.

Polymeric or bis coupler:
This subclass is indented under subclass 376. Processes wherein the coupler contains two or more coupling moieties or the coupler is a polymeric compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:
548 for compositions used in this process.

And either developing or dye inhibition:
This subclass is indented under subclass 376. Processes wherein the coupler either functions as a developer or dye inhibitor or is combined with a noncolor image forming developing or dye inhibitor.

SEE OR SEARCH THIS CLASS, SUBCLASS:
374 and 375, for color image formation using noncolor image forming developing inhibitors and components other than couplers.
543 for compositions used in this process.

Forming multicolor image:
This subclass is indented under subclass 376. Processes for forming multicolor image with only one color image in any single layer of a multilayered material.

SEE OR SEARCH THIS CLASS, SUBCLASS:
365 for the formation of multicolor images wherein a single layer contains plural images.
378 for the formation of direct positive color images.
379 for the formation of multicolor images by the reversal process.

Identified cyan dye color:
This subclass is indented under subclass 376. Processes involving use of a cyan-dye forming coupler (usually phenolic or naphtholic compounds).

SEE OR SEARCH THIS CLASS, SUBCLASS:
376 for all other specified or nonspecified color image formation.
384 through 389, for specified cyan, magenta, or yellow color image formation.
552 for radiation sensitive compounds used in this subclass.

Substituted at coupling position with other than hydrogen:
This subclass is indented under subclass 384. Processes involving the use of couplers containing a group other than hydrogen attached to the coupling position which is removed during processing, usually two-equivalent couplers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
553 for radiation sensitive compositions used in this process.

Identified magenta dye color:
This subclass is indented under subclass 376. Processes involving the use of magenta-dye forming coupler, usually a 2-pyrazolin-5-one compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:
554 for radiation sensitive composition used in this process.

Substituted at coupling position with other than hydrogen:
This subclass is indented under subclass 386. Processes involving use of couplers containing a group attached to the coupling position which is removed during processing, usually two-equivalent couplers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
555 for radiation sensitive compositions used in this process.

Identified yellow dye color:
This subclass is indented under subclass 376. Processes involving use of a yellow-dye forming coupler usually open chain ketomethylene type compounds, e.g., benzoylacetanilide.

SEE OR SEARCH THIS CLASS, SUBCLASS:
556 for radiation sensitive composition used in this process.

Substituted at coupling position with other than hydrogen:
This subclass is indented under subclass 388. Processes
involving use of couplers containing a group other than hydrogen attached to the coupling position which is removed during processing, usually two-equivalent.

SEE OR SEARCH THIS CLASS, SUBCLASS:
557 for radiation sensitive compositions used in this process.

And dye:
This subclass is indented under subclass 375. Processes involving use of a radiation sensitive silver compound composition containing a preformed dye before exposure such dye usually being of the azo, anthraquinone, indigo, phthalocyanine, etc., type and the process usually is the dye-bleach process.

SEE OR SEARCH THIS CLASS, SUBCLASS:
199 for process involving dye to developers in diffusion transfer process.
376 385, 387, and 389, for processes involving two-equivalent couplers containing a dye moiety attached to the coupling position.
559 for radiation sensitive compositions used in this process.

Forming multicolor image:
This subclass is indented under subclass 390. Processes for forming multicolor image with only one color image in any single layer of a multilayered material.

SEE OR SEARCH THIS CLASS, SUBCLASS:
365 for the formation of multicolor images wherein any single layer contains plural images.

And dye catalyst:
This subclass is indented under subclass 390. Processes wherein a dye catalyst is used and may be located in the
element or processing both.

SEE OR SEARCH THIS CLASS, SUBCLASS:
559 for radiation sensitive composition used in this process.

Silver bleach or bleach-fix:
This subclass is indented under subclass 375. Processes wherein in the formation of the color image a silver image is bleached or bleached and fixed.

SEE OR SEARCH THIS CLASS, SUBCLASS:
374 where a metal other than silver is bleached or bleached-fixed.
430 for silver bleach or bleach fix process in the formation of achromatic images.
461 for silver bleach compositions.

PLURAL EXPOSURE STEPS:
This subclass is indented under the class definition. Processes involving multiple imaging or treatments with radiation.

USING REFLECTED RADIATION, E.G., REFLEX COPYING, ETC.:
This subclass is indented under the class definition. Processes employing radiation cast back after having struck a surface.

EFFECTING FRONTAL RADIATION MODIFICATION DURING EXPOSURE, E.G., SCREENING, MASKING, STENCILING, ETC.:
This subclass is indented under the class definition. Processes employing some means interposed between the radiation source and the image receiver which changes the
quantity or quality of radiation reaching the receiver, e.g., a mask, stencil, screening, vignetting, etc.
(1) Note. Use of a diaphragm or lens are so commonplace, they are not included herein.

Involving motion during exposure, e.g., dodging, etc.:
This subclass is indented under subclass 396. Processes wherein the radiation modification means is caused to move during exposure.

REGENERATING IMAGE PROCESSING COMPOSITION:
This subclass is indented under the class definition. Processes wherein spent radiation s:graphic processing composition is reconstituted or made in a better form for reuse.
(1) Note. Class 430 takes the above subject matter even when recovery of material is involved.

SEE OR SEARCH THIS CLASS, SUBCLASS:
449 for nonradiation sensitive processing compositions.

SEE OR SEARCH CLASS:
8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers, subclass 440 for dye recovery process.
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures, for recovery of metal, especially subclass 417, 635, and 713 for recovering metal from photos:graphic materials.
423, Chemistry of Inorganic Compounds, for recovery of inorganic compounds or nonmetallic elements.

Developer:
This subclass is indented under subclass 398. Processes wherein developer composition is regenerated.

SEE OR SEARCH THIS CLASS, SUBCLASS:
464 for developer compositions.

Bleach-fix:
This subclass is indented under subclass 398. Processes wherein bleach-fix composition is regenerated.

POST IMAGING PROCESSING:
This subclass is indented under the class definition. Processes (a) of treating a radiation imaged radiation sensitive product to finish or perfect the image, or (b) treating an image by chemical processing to finish or perfect the image regardless of how the image was formed.

Achromatic image from organic compound:
This subclass is indented under subclass 401. Processes wherein a black organic compound is created in the product in an imagewise manner.
(1) Note. These patents generally form a black dye by a coupling reaction similar to that which is used to form a colored dye in color photography.

With structural limitation:
This subclass is indented under subclass 401. Processes wherein physical structure, e.g., thickness of a layer, particle size, etc., is recited.

Using web or gel:
This subclass is indented under subclass 401. Process
involving use of a web, a nonpourable gel, or viscous material as a treating medium.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 98 for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Containing developer in element:
This subclass is indented under subclass 401. Processes involving use of an element which has developer agent(s).

Positive:
This subclass is indented under subclass 401. Process for producing a positive image.

Reversal:
This subclass is indented under subclass 406. Processes wherein a negative image is produced which is treated (usually bleached away leaving undeveloped radiation sensitive material) to form a positive image.

Photosolubilization:
This subclass is indented under subclass 406. Processes wherein radiation sensitive material is dissolved leaving the unexposed material to be processed.

Emulsions fogged during processing:
This subclass is indented under subclass 406. Processes including the step of fogging.

Identified nucleating or fogging agent:
This subclass is indented under subclass 409. Processes involving use of a fogging or nucleating agent.
(1) Note. Fogging and nucleating are synonymous terms.

Using fogged emulsion:
This subclass is indented under subclass 406. Processes including use of a radiation sensitive product which has been fogged prior to imaging.

Identified electron acceptor or desensitizer containing:
This subclass is indented under subclass 411. Processes involving use of compound capable of receiving electrons. An electron acceptor is defined as a substance having a polaros:graphic reduction potential less negative than minus 1.0 and a polaros:graphic oxidation potential more positive than plus 0.4.

Physical developing:
This subclass is indented under subclass 401. Processes wherein the image produced by radiation on a radiation sensitive product is contacted with reducible metal ions and a reducing agent to cause reduction of the metal ions to free metal in image areas. The radiation sensitive material cannot itself be a significant source of metal ions and must be a material different in some way from the material which is the source of metal ions.
(1) Note. The source of reducible metal ions or reducing agent may be either in the product itself or in a post
imaging composition used to treat the product.

SEE OR SEARCH THIS CLASS, SUBCLASS:
477 for physical developers.

Amplifying:
This subclass is indented under subclass 413. Processes including an additional deposition of metal from solution onto a previously developed image to increase the density of the image.
(1) Note. The first development step may be of any type and the developed image need not be visible.

With processing ingredient in element:
This subclass is indented under subclass 413. Processes involving use of a product having a component used in processing.

Silver halide as radiation sensitive medium:
This subclass is indented under subclass 413. Processes involving treatment of image formed by imaging a silver halide radiation sensitive medium.

Radiation reducible metal compound directly produces catalytic metal nuclei in image area:
This subclass is indented under subclass 413. Processes wherein the image treated is found by a radiation sensitive metal compound which is directly decomposed by radiation to yield free metal nuclei which catalyze the further deposition of metal in the image area by physical development as defined in subclass 413.

Disparate function simultaneous process step:
This subclass is indented under subclass 401. Processes wherein plural diverse processing functions are carried out at the same time.

Develop-fix:
This subclass is indented under subclass 418. Processes wherein the functions are the development and fixation of the image.

Develop-harden:
This subclass is indented under subclass 418. Processes wherein the functions are developing the image and hardening the product produced.

Using plural sequential baths of same type:
This subclass is indented under subclass 401. Processes involving use of multi-same function baths one after the other.

Treating with processing composition prior to imaging and then developing:
This subclass is indented under subclass 401. Processes including treating the radiation sensitive production with a composition for perfecting the post imaging processing before exposure and subsequently developing the same after imaging.

Treating with processing composition after imaging prior to developing:
This subclass is indented under subclass 401. Processes
involving treatment of a radiation sensitive product after imaging prior to developing the same.

Desensitizing:
This subclass is indented under subclass 423. Processes involving treating the imaged radiation sensitive medium with a composition to reduce its sensitivity to radiation prior to developing the same.

Sensitizing:
This subclass is indented under subclass 423. Processes involving increasing the sensitivity of the imaged radiation sensitive product to development.
(1) Note. In the art, this term is often called latensification.

Prehardening:
This subclass is indented under subclass 423. Processes wherein the post imaging step hardens the product.

Treating with process composition between standard develop and fix-wash:
This subclass is indented under subclass 401. Processes involving treating the imaged radiation sensitive product with a process composition after development and prior to the fix-wash operation, e.g., use of shortstop, buffer, etc.

Stabilizing:
This subclass is indented under subclass 401. Processes wherein the imaged radiation sensitive product is treated to render the same stable.

Containing additive:
This subclass is indented under subclass 428. Processes wherein an ingredient in addition to the stabilizing agent is used to treat the radiation sensitive product.

Bleaching:
This subclass is indented under subclass 401. Processes involving rendering the imaged radiation sensitive product white or colorless in whole or in part or reduces the density of the same.

Using silver and dye bleach:
This subclass is indented under subclass 430. Processes involving use of a silver and dye bleaching agents in a color process.

Including post developing step:
This subclass is indented under subclass 401. Processes involving treating the developed radiation sensitive product, e.g., toning, coating, etc.

Developing in acid medium:
This subclass is indented under subclass 401. Processes wherein the image in a radiation sensitive product is rendered visible in a medium having a pH of less than 7.

Developing:
This subclass is indented under subclass 401. Processes for rendering visible the image in the radiation sensitive product.

Using identified developer:
This subclass is indented under subclass 434. Processes wherein a specified developing agent is used.

Plural identified developers:
This subclass is indented under subclass 435. Processes involving use of multiple identified developers.

Three or more identified developers:
This subclass is indented under subclass 436. Processes wherein at least three developers are identified.

Containing hydroquinone:
This subclass is indented under subclass 436. Processes wherein one of the developers is hydroquinone or derivative thereof.

And amino substituted carbocyclic compound:
This subclass is indented under subclass 438. Processes wherein in addition to hydroquinone derivative thereof, an amino substituted carbocyclic compound is used, e.g, p-aminophenol, p-phenylenediamine, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
380 for p-phenylenediamine + another developer used in color processes.

Heterocyclic:
This subclass is indented under subclass 435. Processes wherein the identified developer is of a heterocyclic nature, a ring structure containing at least one N, O, S, atom, etc., e.g., pyrazolidones, etc.

Carbocyclic:
This subclass is indented under subclass 435. Processes wherein the identified developer is of a carbocyclic nature, i.e., ring structure containing only carbon.

Amino substituent on carbocyclic ring:
This subclass is indented under subclass 441. Processes wherein the identified developer contains at least one amino substituent on the carbocyclic ring, e.g., p-aminophenol, p-phenylenediamine.

SEE OR SEARCH THIS CLASS, SUBCLASS:
374 for a p-phenylenediamine developer used in a color process.

Having developer releasing compound:
This subclass is indented under subclass 435. Processes involving use of an agent which releases during development a processing ingredient, e.g., block, restrained, or inactive developers, development inhibitor, etc.

Using polymer or condensation reaction product:
This subclass is indented under subclass 434. Processes including use of a relatively high molecular weight substance
which is made from the combination of smaller molecules.

Using mercapto or thione compound:
This subclass is indented under subclass 434. Processes involving the use of a compound containing the SH, -, or the group.

Using heterocyclic compound:
This subclass is indented under subclass 434. Processes including treating the imaged radiation sensitive product with a ring compound which contains at least one carbon atom along with one or more atoms of N, O, S, Se, or Te.

Using inorganic or organometallic complex:
This subclass is indented under subclass 434. Processes involving use of an inorganic complex or an organometallic complex.

Using processing ingredient in element:
This subclass is indented under subclass 434. Processes involving use of an ingredient which aids in the post imaging processing, and is contained in the radiation sensitive product.

NONRADIATION SENSITIVE IMAGE PROCESSING COMPOSITION OR PROCESS OF MAKING:
This subclass is indented under the class definition. Compositions which are not reactive when exposed to radiation and are part of or applied to a radiation sensitive product. Also included is the process of making the compositions.

SEE OR SEARCH CLASS:
252, Compositions, for nonradiation sensitive compositions of general utility.
260, Chemistry of Carbon Compounds, for nonradiation sensitive organic compounds.
423, Chemistry of Inorganic Compounds, for inorganic nonradiation sensitive compounds.
428, Stock Material or Miscellaneous Articles, for nonradiation sensitive products, e.g., a coated nonradiation sensitive photos:graphic stock material, etc.

Process of preparing composition from plural preformed concentrates:
This subclass is indented under subclass 449. Processes for making a composition wherein two or more concentrates are mixed and diluted to the desired concentration when used.

Hardener:
This subclass is indented under subclass 449. Compositions containing an ingredient intended to harden the radiation sensitive product.

SEE OR SEARCH CLASS:
260, Chemistry of Carbon Compounds, subclass 117 to harden gelatin, per se.

Develop-harden:
This subclass is indented under subclass 451. Compositions functioning to render visible the image and to harden the product.

Fix-harden:
This subclass is indented under subclass 451. Compositions
which fix and harden the imaged product.

Shortstop:
This subclass is indented under subclass 449. Compositions which stop the developing process at the desired time.

Fixer:
This subclass is indented under subclass 449. Compositions which remove or otherwise inactivate the radiation sensitive material rendering the image permanent.

And developer:
This subclass is indented under subclass 455. Compositions for rendering the image visible and making same permanent.

Forming dye image:
This subclass is indented under subclass 456. Compositions wherein the ingredient which renders the latent image visible produces a dyed image which is usually a colored image.

Dry or concentrated:
This subclass is indented under subclass 455. Compositions in a form dry to the touch or in a solution stronger than ordinarily used in processing.

Plural fixers:
This subclass is indented under subclass 455. Compositions
containing multifixing agents.

And bleach:
This subclass is indented under subclass 455. Compositions which reduce the density of the imaged product.

Bleach or intensification:
This subclass is indented under subclass 449. Compositions which either reduce or increase the density of the image.

SEE OR SEARCH CLASS:
252, Compositions, 186.1 for oxidative bleaches; and subclasses 188.1+ for reductive bleaches of general utility.

Dye bleach for color image:
This subclass is indented under subclass 461. Compositions functioning to reduce the density of this dye image only.

Wash or aftertreat:
This subclass is indented under subclass 449. Compositions employed for washing or treating the radiation sensitive product after development and the other conventional, e.g., fix, harden, etc., steps.

Developer:
This subclass is indented under subclass 449. Compositions functioning to render visible a latent image in a radiation sensitive product.

Solid or dry:
This subclass is indented under subclass 464. Compositions which are in the form of a very dense material or dry to the touch.

Concentrated or viscosity increasing agent containing:
This subclass is indented under subclass 464. Compositions having ingredients either concentrating the same greater than in normal use or functioning to render the developer thick.

Color developer:
This subclass is indented under subclass 464. Compositions which renders visible a latent image in color.

Additional developer containing:
This subclass is indented under subclass 467. Compositions having substance which renders the latent image visible as well as a substance which develops a color image.

Including developing accelerator:
This subclass is indented under subclass 467. Compositions containing an ingredient which increases the speed of the developing process.

Coupler containing:
This subclass is indented under subclass 464. Compositions having an ingredient which reacts with the oxidation product of the color developer during development to produce a colored dye.

And additional reactive compound containing:
This subclass is indented under subclass 470. Compositions having at least one other reactive ingredient to form color.
(1) Note. Included herein are mixed couplers, competing couplers, etc.

Substituted at coupling position with other than hydrogen:
This subclass is indented under subclass 470. Compositions containing a group other than hydrogen attached to the coupling position which is removed during processing, usually two-equivalent.

Phenol or naphthol coupler:
This subclass is indented under subclass 470. Compositions wherein the coupler contains a hydroxyl group on a benzene ring not fused to any other ring or on a benzene ring fused to another single benzene ring.

Pyrazolone coupler:
This subclass is indented under subclass 470. Compositions wherein the coupler contains the structure [figure]

Open-chain keto methylene coupler:
This subclass is indented under subclass 470. Compositions wherein the coupler contains the -CH[subscrpt]2[end subscrpt] C- structure.

Heterocyclic coupler:
This subclass is indented under subclass 470. Compositions wherein the coupler contains a ring structure having different types of atoms.

Reducible metal compound including reducing agent, i.e., physical developer:
This subclass is indented under subclass 464. Compositions having a reducible metal compound and a reducing agent functioning to reduce metal ions to free metal in the image areas.

SEE OR SEARCH THIS CLASS, SUBCLASS:
413 for physical developing processes.

SEE OR SEARCH CLASS:
106, Compositions: Coating or Plastic, 1.05 for compositions which deposit a free metal coating. These compositions may contain a reducible metal compound and a reducing agent, and are of general utility.

Plural developer agents containing:
This subclass is indented under subclass 464. Compositions having multi-ingredients functioning to render the image visible.

SEE OR SEARCH THIS CLASS, SUBCLASS:
436 for process of using plural developers.

Heavy metal organic or inorganic:
This subclass is indented under subclass 478. Compositions having an organic compound containing a metal with a density greater than 4 or an inorganic compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:
447 for process of using inorganic or organometallic complex
developers.

Heterocyclic developer:
This subclass is indented under subclass 478. Compositions wherein at least one developer contains a ring structure having diverse types of atoms.

SEE OR SEARCH THIS CLASS, SUBCLASS:
440 for process of using an identified heterocyclic.
446 for developer having a heterocyclic compound as a part thereof.

And hydroquinone:
This subclass is indented under subclass 480. Compositions containing dihydroxybenzene or substituted p-dihydroxy benzene.

Methyl-p-aminophenol and dihydroxy benzene:
This subclass is indented under subclass 478. Compositions containing at least methyl-p-aminophenol and dihydroxy benzene. Derivatives of these compounds are also included.

Heterocyclic developers:
This subclass is indented under subclass 464. Compositions containing a ring structure having different type atoms.

SEE OR SEARCH THIS CLASS, SUBCLASS:
440 for process of using identified heterocyclic developer.

Amine developer:
This subclass is indented under subclass 464. Compositions which contain as the developer a derivative of ammonia wherein at least one hydrogen atom thereof is replaced by a carbon atom.

SEE OR SEARCH THIS CLASS, SUBCLASS:
442 for use of plural identified developers one of which is an amino substituent on a carbocyclic ring.

Hydroxy developer:
This subclass is indented under subclass 464. Compositions wherein the developer contains a compound having an -OH group, e.g., hydroquinone, etc.

Processing additive containing:
This subclass is indented under subclass 464. Compositions having additional ingredient(s) which do not develop a latent image but perfects the developing action.

Accelerator:
This subclass is indented under subclass 486. Compositions containing an additive which increases the rate of the developing action.

Antisludgant:
This subclass is indented under subclass 486. Compositions wherein the additive prevents or decreases the formation of undesirable precipitates in the composition or the result of use.

Antifoggant:
This subclass is indented under subclass 486. Compositions wherein the additive reduces fog or stabilizes radiation sensitive material to fog.

Stabilizer-preservative:
This subclass is indented under subclass 486. Compositions wherein the additive prevents undesired decomposition or change of the other ingredients during storage or use, e.g., antioxidant, antistain, etc.

Sequestrant:
This subclass is indented under subclass 486. Compositions wherein the additive reacts with metal ions to provide a stable, soluble complex, thereby preventing the metal ions from taking part in undesirable reactions.

Buffer:
This subclass is indented under subclass 486. Compositions wherein the additive functions to maintain the pH of the composition at a relatively constant level.

Surfactant, emulsifier, or solvent:
This subclass is indented under subclass 486. Compositions wherein at least one additive is a surfactant, emulsifier, or solvent for another component of the composition except water.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, appropriate subclasses for subject matter relating to: colloid systems (such as sols*, emulsions, dispersions, foams, aerosols, smokes, gels, or pastes) or wetting agents (such as leveling, penetrating, or spreading); subcombination compositions of colloid systems containing at
least an agent specialized and designed for or peculiar to use in making or stabilizing colloid systems; compositions and subcombination compositions specialized and designed for or peculiar to use in breaking (resolving) or inhibiting colloid systems; processes of making the compositions or systems of the class; processes of breaking (resolving) or inhibiting colloid systems; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

INCLUDING EXPOSURE STEP OR SPECIFIED PRE-EXPOSURE STEP PERFECTING EXPOSURE:
This subclass is indented under the class definition. Processes including the step of applying radiation to a radiation sensitive product or a step prior to (and positively tied to) the application of radiation to the radiation sensitive product.

SEE OR SEARCH THIS CLASS, SUBCLASS:
346 for visible imaging using only radiation.
348 for heat exposures.
363 for laser or radiation other than visible light in color imaging.
395 for use of reflected radiation.
396 for process of screening, masking, stenciling etc.

Radiation sensitive product:
This subclass is indented under the class definition. Compositions or elements which are affected by radiation to form an image. An element is a complete self-sustaining product which can be mechanically handled and is in a state ready to be used in an imaging apparatus to produce an image by a process of this class.
(1) Note. An element may be classified in an appropriate composition subclass if no previously appearing subclass is proper.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations
Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions); subclasses 98+ for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents; in each instance, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.
520, Synthetic Resins or Natural Rubbers, appropriate subclasses, particularly Class 523, subclass 136 for a composition containing a synthetic resin which is resistant to, yet does not absorb, radioactive materials or cathode rays or to processes of preparing said composition.

Structurally defined:
Subject matter under subclasses 495.1+ defined in terms of its mechanical structure, e.g., sprocket holes, thickness of a layer, particle size, etc.

With processing ingredient container or trap:
This subclass is indented under subclass 496. Subject matter wherein the structure has a container for processing ingredients or a trap for processing ingredients.

SEE OR SEARCH THIS CLASS, SUBCLASS:
208 for elements having either processing composition container.
209 for processing ingredient trap, both of which are used in a diffusion transfer process.

Container or trap intended to remain in finished product:
This subclass is indented under subclass 497. Subject matter wherein the structure remains in the finished article.

With feature to control spreading of processing ingredient:
This subclass is indented under subclass 497. Subject matter having structure to control the spreading of the processing ingredient.

Roll film:
This subclass is indented under subclass 497. Subject matter in the form of a cylindrical or round film mass.

SEE OR SEARCH THIS CLASS, SUBCLASS:
501 for roll film, per se.

Roll film:
Subject matter under 496 in the form of a cylindrical or rounded film mass along with its related structures, e.g., paper backing, spool, etc.
(1) Note. This is the residual place for roll film even though the chemical aspects of the same are remote.

Two or more radiation-sensitive layers containing other than that characterized by the composition of a single sensitive layer:
This subclass is indented under subclass 495.1. Subject matter containing plural radiation-sensitive layers other than a single radiation-sensitive layer claimed, per se. and also claimed in conjunction with another sensitive layer which is not identified in more detail than nominal silver halide.
(1) Note. Patents not included in this subclass are placed below based on the first provided for feature claimed.
(2) Note. This and indented subclasses provide for patents wherein all claims recite plural radiation-sensitive layers whether these layers are identified or not.

Layer sensitive to different spectral regions:
This subclass is indented under subclass 502. Subject matter wherein two or more radiation-sensitive layers respond to different portions of the electromagnetic spectrum.

Ingredient for color compensation or correction containing:
This subclass is indented under subclass 503. Subject matter having ingredients that compensate for undesired colors in the final image or to correct color of that desired.

Developing inhibitor or processing ingredient containing:
This subclass is indented under subclass 503. Subject matter having an ingredient which prohibits development or aids in the production of a visible image.
(1) Note. The ingredients may be anywhere in the layers and may be precursors which react under or are released by subsequent processing steps.

And containing plural layers sensitive to the same spectral region:
This subclass is indented under subclass 503. Subject matter further containing at least two layers which respond to the same portion of the electromagnetic spectrum.
(1) Note. Patents in this subclass necessarily contain at least three sensitive layers, two responsive to differing spectral regions, and a third layer of the same sensitivity as one of the first two.

Filter layer containing:
This subclass is indented under subclass 503. Subject matter which contains a layer which selectively blocks part of the spectrum of the incident radiation. The filter layer may
also be a sensitive layer or may be an additional layer.

Sensitive to portion only of visible spectrum or of widened spectral response:
This subclass is indented under subclass 502. Subject matter which is sensitive to only a portion of the visible spectrum or which is sensitized to increase receptivity to both infrared and ultraviolet.

Sensitive layers differ in speed:
This subclass is indented under subclass 502. Products wherein the sensitive layers differ in sensitivity to radiation.

Antihalation or filter layer containing:
This subclass is indented under subclass 495.1. Subject matter having a layer which either selectively absorbs a part of the spectrum of incident radiation, or reduces reflection from within.

Filters differing spectral regions in different areas of the filter, e.g., color screen:
This subclass is indented under subclass 510. Subject matter wherein diverse selection absorption of radiation is provided for in different areas of the layer.

Filters ultraviolet radiation:
This subclass is indented under subclass 510. Subject matter containing a layer which selectively blocks the passage of radiation in the ultraviolet portion of the spectrum.

Dissolvable or removable:
This subclass is indented under subclass 510. Subject matter wherein the antihalation or filter layer is designed to be removed from the element during subsequent processing, e.g., by dissolution in a processing bath, etc.
(1) Note. The filter layer must be removable itself, bleaching or destruction of a dye in a layer is excluded.

Synthetic resin containing:
This subclass is indented under subclass 513. Subject matter wherein the dissolvable or removable layer contains a synthetic resin.

Carbohydrate or derivative containing:
This subclass is indented under subclass 513. Subject matter wherein the dissolvable or removable layer contains a carbohydrate.

Contains carboxyl groups:
This subclass is indented under subclass 515. Subject matter wherein the carbohydrate derivative contains the carboxyl -CO[subscrpt]2[end subscrpt]H group.

Organic dye or pigment containing:
This subclass is indented under subclass 510. Subject matter containing an organic dye or pigment in a layer separate from the sensitive layer which functions to selectively absorb a part of the incident radiation or prevent internal reflections within the layer.

And mordant:
This subclass is indented under subclass 517. Subject matter wherein the organic dye containing layer also contains a substance which reacts with or adsorbs the dye to make it more difficult for the dye to dissolve out or migrate from the layer.

Azo:
This subclass is indented under subclass 517. Subject matter wherein the organic dye or pigment contains the -N=N- group bonded to two different carbon atoms, which atoms are in direct organic radicals not bonded together by other covalent bonds.

Triarylmethane:
This subclass is indented under subclass 517. Subject matter wherein the organic dye or pigment contains three discrete aryl nuclei bonded through nuclear carbons thereof to a methane carbon.

Anthraquinone or quinhydrone:
This subclass is indented under subclass 517. Subject matter wherein the organic dye or pigment contains the anthraquinonyl nucleus, i.e., diphenylene-orthodiketone not having any benzene nucleus fused thereon, or is a quinhydrone, i.e., the complex equilibrium mixture of products resulting from the interaction of an equimolar mixture of a quinone and a hydroquinone.

Intercyclic methine or azomethine and cyclic ring containing:
This subclass is indented under subclass 517. Subject matter wherein the organic dye or pigment contains either the methine, i.e., -HC= or the azomethine, i.e., -N= linkage in a
straight chain connecting to a distinct cyclic ring.

Identified backing or protective layer containing:
This subclass is indented under subclass 495.1. Subject matter having a layer which is identified in a claim by its chemical constitution in addition to a radiation-sensitive layer. The chemically identified layer must either be on the side of a radiation-sensitive layer opposite the incidence of radiation, or overlie the radiation-sensitive layer to protect it from damage.
(1) Note. Any identification by chemical constitution is sufficient, e.g., resin, synthetic resin, paper, etc. Mere functional identification, e.g., base, support, etc., will not cause placement in this or indented subclasses.
(2) Note. Patents are placed in the indented subclasses hereunder in the first subclass providing for any base or support layer. If none of the identified base or support layers are provided for in the indented subclasses, the patent is placed in this subclass. In classifying in this and indented subclasses only identified layers as set forth in (1) Note will be considered, except that a functionally defined layer between two identified layers will be considered identified by disclosure for purposes of identification.
(3) Note. A lubricant layer which smooths the passage of the product through the apparatus is included as a protective layer.
(4) Note. In the case of a product used in a reflex process, all nonradiation-sensitive layers will be considered support or backing layers.

Metal:
This subclass is indented under subclass 523. Subject matter wherein the backing or protective layer contains a distinct, identified layer in which elemental metal is the continuous phase.

And another backing layer other than aluminum oxide:
This subclass is indented under subclass 524. Subject matter wherein the metal layer is associated with another backing layer other than aluminum oxide. The other layer may also be metal or some other material such as plastic.

Aluminum:
This subclass is indented under subclass 524. Subject matter wherein the metal is aluminum.
(1) Note. Anodized aluminum is included herein.

Antistatic agent containing:
This subclass is indented under subclass 523. Subject matter wherein a layer in the product other than the radiation-sensitive layer contains an ingredient intended to decrease the build up of static electrical charge or to discharge a static electrical charge.

Ammonium salt:
This subclass is indented under subclass 527. Subject matter wherein the antistatic agent contains a NR[subscrpt]4[end subscrpt]+ anion group.

Organic carboxylic, sulfur or phosphorus acid or salt:
This subclass is indented under subclass 527. Subject matter wherein the antistatic agent is an organic compound containing the -CO[subscrpt]2[end subscrpt]H group or an organic acid wherein the acidic group contains sulfur or phosphorus, or salts of these acids.

Elemental metal or metal salt:
This subclass is indented under subclass 527. Subject matter
wherein the antistatic agent is an elemental metal or a metal salt.

Synthetic resin or cellulose derivative containing:
This subclass is indented under subclass 523. Subject matter wherein the protective or backing layer contains a synthetic relatively high molecular weight film forming resin or a derivative of cellulose.

Subjected to radiation, flame, or corona discharge:
This subclass is indented under subclass 531. Subject matter wherein a layer has been subjected to treatment with radiation, flame, or corona discharge.
(1) Note. The purpose of the treatment usually is to increase adhesion of the subsequently applied coating.

Polyester or polycarbonate:
This subclass is indented under subclass 531. Subject matter wherein the synthetic resin is a ploymer containing periodic recurring ester groups in the main polymer chain.

Next to polymer of unsaturated monomer:
This subclass is indented under subclass 533. Subject matter containing an additional nonradiation-sensitive layer next to the polyester layer which contains the addition polymer of an unsaturated monomer.

Polymer of unsaturated ester or halide:
This subclass is indented under subclass 534. Subject matter wherein an unsaturated monomer polymerized contains an ester group or a halogen atom.
(1) Note. This subclass includes copolymers of ester or halogen containing monomers with other monomers, e.g., vinylidene chloride, acrylonitrile compolymer, etc.

Polymer of unsaturated monomer:
This subclass is indented under subclass 531. Subject matter wherein the synthetic resin is the addition polymer of an unsaturated monomer.

In nonradiation-sensitive layer including gelatin:
This subclass is indented under subclass 536. Subject matter wherein the synthetic resin containing layer also contains gelatin.
(1) Note. Since this layer is a backing or protective layer it may not be radiation sensitive.

Fibrous, e.g., paper, textile, etc.:
This subclass is indented under subclass 523. Subject matter containing a base or protective layer which is produced by association of discrete fibers, e.g., paper, cloth, etc.

Gelatin other than radiation sensitive type:
This subclass is indented under subclass 523. Subject matter containing a backing or protective layer which is not radiation sensitive.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 98 for colloid systems of continuous or semicontinuous solid phase with discontinuous liquid phase (gels, pastes, flocs, coagulates) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically
superior provision in the USPC for the specifically claimed art.

Iron compound sensitizer containing:
This subclass is indented under subclass 495.1. Subject matter having an iron compound sensitizer.

Identified radiation sensitive composition with color producing substance:
This subclass is indented under subclass 495.1. Composition containing an identified radiation sensitive material and a color producing substance.
(1) Note. The radiation sensitive material may be capable of producing a color image, per se, by wet processing.

SEE OR SEARCH THIS CLASS, SUBCLASS:
332 for composition for producing print-out dye images, bleach-out dye images, or latent images which are developed visible dye images by dry processing.
374 for process involving the exposed compositions of this subclass.
502 for radiation sensitive elements having compositions of this subclass.

Silver compound sensitizer:
This subclass is indented under subclass 541. Subject matter wherein the radiation sensitive material is a silver compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:
375 for process involving exposed compositions of this class.
449 for nonradiation sensitive compositions applied to exposed compositions of this subclass.
495.1 for radiation sensitive elements comprising
compositions of this class.

Coupler containing:
This subclass is indented under subclass 542. Subject matter containing a color producing substance in the form of a color coupler.

SEE OR SEARCH THIS CLASS, SUBCLASS:
376 for process involving exposed composition of this subclass.
449 for nonradiation sensitive compositions applied to exposed compositions of this subclass.
495.1 for radiation sensitive element having compositions of this subclass.

And development inhibitor or development inhibitor releasing agent:
This subclass is indented under subclass 543. Subject matter containing an ingredient which prohibits development or releases a development prohibiting ingredient.

And identified binder:
This subclass is indented under subclass 543. Compositions containing an identified binder.

SEE OR SEARCH THIS CLASS, SUBCLASS:
377 for process involving the use of a binder in color imaging.
449 for nonradiation sensitive compositions applied to compositions of this subclass.
495.1 for radiation sensitive element containing the composition of this class.

And solvent or emulsifier or coating aid:
This subclass is indented under subclass 543. Compositions containing a dissolving or emulsifying agent or coating aid.
(1) Note. Included herein are solvents or emulsifiers which are used as an aid in dispersing couplers in the composition.

SEE OR SEARCH THIS CLASS, SUBCLASS:
377 for process involving the exposed compositions of this subclass.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Direct positive:
This subclass is indented under subclass 544. Compositions which form a direct positive dye image, on exposure and development.
(1) Note. Included herein are fogged silver halide emulsion containing desensitizing agents.

SEE OR SEARCH THIS CLASS, SUBCLASS:
378 for process involving exposed compositions of this subclass.

Polymeric or bis coupler:
This subclass is indented under subclass 543. Compositions wherein the coupler contains two or more coupling moieties, or the coupler is a polymeric compound.
(1) Note. Included herein are bis and polymeric couplers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
381 for process involving exposed compositions of this subclass.

Mixture of couplers:
This subclass is indented under subclass 543. Compositions containing plural couplers.

SEE OR SEARCH THIS CLASS, SUBCLASS:
365 for process involving exposed compositions of this subclass.

And chemical or optical sensitizer:
This subclass is indented under subclass 543. Compositions containing an ingredient which increases the sensitivity of the silver compound, e.g., a chemical sensitizer or a hypersensitizer, or an ingredient which imparts its radiation absorption to the silver compound e.g., an optical sensitizing dye.

SEE OR SEARCH THIS CLASS, SUBCLASS:
377 for process involving the exposed compositions of this subclass.

And antifoggant or color stabilizer:
This subclass is indented under subclass 543. Compositions containing an ingredient or a treatment is applied to same to stabilize the silver compound against fog or to stabilize the dye image against color fog, fading, stain, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:
372 for process of stabilizing dye images.

Phenol or naphthol coupler:
This subclass is indented under subclass 543. Compositions containing a coupler in the form of a phenol or naphthol.

SEE OR SEARCH THIS CLASS, SUBCLASS:
384 for process involving exposed compositions of this subclass.

Substituted at coupling position with other than hydrogen:
This subclass is indented under subclass 552. Compositions containing coupler having a group attached to the coupling position with other than hydrogen which is removed during processing, usually two-equivalent.

SEE OR SEARCH THIS CLASS, SUBCLASS:
385 for process involving exposed compositions of this subclass.
449 for nonradiation sensitive compositions applied to compositions of this subclass.

2-pyrazolin-5-one coupler:
This subclass is indented under subclass 543. Compounds containing a coupler in the form of 2-pyrazolin 5-one.

SEE OR SEARCH THIS CLASS, SUBCLASS:
386 for process involving exposed composition of this subclass.
449 for nonradiation sensitive compositions applied to exposed compositions of this subclass.

Substituted at coupling position with other than hydrogen:
This subclass is indented under subclass 554. Compositions containing a coupler having a group attached to the coupling position with other than hydrogen which is removed during processing, usually two-equivalent.

SEE OR SEARCH THIS CLASS, SUBCLASS:
387 for process involving exposed compositions of this subclass.

Open chain keto-methylene coupler:
This subclass is indented under subclass 543. Compositions containing a coupler in the form of an open chain ketomethylene compound.

SEE OR SEARCH THIS CLASS, SUBCLASS:
388 for process involving yellow dye formation.
449 for nonradiation sensitive compositions applied to exposed compositions of this subclass.

Substituted at coupling position with other than hydrogen:
This subclass is indented under subclass 556. Compositions containing a coupler having a group attached to the coupling position other than hydrogen which is removed during processing, usually two-equivalent.

SEE OR SEARCH THIS CLASS, SUBCLASS:
381 for process involving exposed compositions of this subclass.

Heterocyclic coupler:
This subclass is indented under subclass 543. Compositions containing a coupler having a ring structure composed of different type atoms.

SEE OR SEARCH THIS CLASS, SUBCLASS:
376 particularly 384, 385, 386, 387, 388, and 389 for process involving exposed compositions of this subclass.
449 for nonradiation sensitive compositions applied to exposed compositions of this subclass.
554 for compositions containing a heterocyclic coupler in the form of 2-pyrazolin-5-one.

Dye containing:
This subclass is indented under subclass 542. Compositions containing a preformed dye before exposure.
(1) Note. Such dyes are usually azo dyes, anthroquinone dyes, indigo dyes, phthalocyanine dyes, etc., and are usually used in a silver-dye-bleach process and in dye diffusion transfer process.

SEE OR SEARCH THIS CLASS, SUBCLASS:
199 for dye image diffusion transfer process.
390 for other processes involving exposed compositions of this subclass.
543 553, 555, and 557, for compositions containing two-equivalent couplers containing a dye moiety attached to the coupling ring.

And optical sensitizer:
This subclass is indented under subclass 559. Compositions containing an optical sensitizing dye.

Azo dye:
This subclass is indented under subclass 559. Compositions containing a preformed azo dye.

Monoazo:
This subclass is indented under subclass 561. Subject matter wherein the azo dye is monoazo.

Diazo:
This subclass is indented under subclass 561. Compositions wherein the azo dye is diazo.

Silver compound sensitizer containing:
This subclass is indented under subclass 495.1. Subject matter having radiation sensitive silver compound or processes not otherwise provided for making such compositions.

Achromatic image forming organic compound:
This subclass is indented under subclass 564. Products containing an organic compound which reacts with suitable developing material to form a black organic compound in image areas.
(1) Note. These patents are usually to organic compounds which couple with a developer to form a black dye in a manner analogous to the reactions used to form cyan, magenta, or yellow dyes in color photography.

Developing or fixing agents containing for liquid processing:
This subclass is indented under subclass 564. Products containing an ingredient which develops a latent image or fixes the image against further change when the product is treated with a liquid. The developing or fixing agent may be, e.g., activated by the liquid or may cooperate or react with other ingredients in the liquid to develop or fix.

Silver compound having specified crystal form, habit, particle size or particle size distribution:
This subclass is indented under subclass 564. Subject matter wherein the silver compound has a specified crystal form, e.g., isometric, hexagonal, etc., crystal, e.g., presence or disposition of 100, 110, 111 planes, etc., or particle size and process of making.

Having particle size of 100 millimicrons or less, e.g., lippmann type, etc.:
This subclass is indented under subclass 567. Subject matter wherein the silver compound particles have an average grain size of less than 100 mm or process of making the composition.

Including manipulative emulsification step:
This subclass is indented under subclass 564. Processes including the step of preparing a dispersion of a solid radiation sensitive silver compound in a liquid medium. This includes, e.g., the reaction of silver nitrate with halogen ion in a medium to produce an AgX dispersion, or the dispersion of preformed AgX in a liquid.
(1) Note. Mere addition of an additive to an existing AgX dispersion is excluded and placed below on some other feature, such as the composition made.

SEE OR SEARCH CLASS:
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting, 9 for continuous liquid phase colloid systems (e.g., foams, emulsions, suspensions, dispersions) or agents for such systems or making or stabilizing such systems or agents, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.

Spectral sensitizing:
This subclass is indented under subclass 564. Subject matter containing a material, e.g., cyanine dye, etc., which imparts its radiation adsorption to the silver compound thereby increasing the radiation sensitivity of the silver compound containing emulsion to that portion of the spectrum absorbed by the dye.
(1) Note. A cyanine compound as herein included contains two distinct heterocyclic rings, each of which contains at least one nitrogen atom, with nitrogen atoms of the
individual rings being joined through a conjugated acyclic chain of methine groups, the heterocyclic rings themselves being linked through an acyclic chain which contains at least one methine group.
(2) Note. Methine denotes a -C= group.
(3) Note. The term heterocyclic denotes the presence of one or more carbon atoms covalently bonded in a closed ring with at least one atom of oxygen, nitrogen, sulfur, selenium, or tellurium and having no other atoms in the ring.
(4) Note. This and indented subclasses include a precursor which will later be reacted to produce an optical sensitizer.

Mixed grain:
This subclass is indented under subclass 570. Subject matter which includes a mixture of at least two groups of optically sensitized silver compound particles, which groups each have different spectral sensitivity.

Multiple sensitizers or supersensitizing:
This subclass is indented under subclass 570. Subject matter in which plural materials are added to an optically sensitive silver compound containing composition to increase the optical sensitivity thereof. The plural materials (a) being capable of sensitizing the silver compound individually, or (b) which cooperate with each other to the extent that the total optical sensitizing effect of the added materials is greater than the sum of the optical sensitizing effects of the added materials taken independently, i.e., there is a synergistic or potentiating effect.

Polyheteronuclear sensitizer:
This subclass is indented under subclass 572. Subject matter in which at least one of added materials is a compound having at least three distinct heterocyclic nuclei.
(1) Note. Heterocyclic groups which are fused together to form a multicyclic grouping are considered to be a single distinct heterocyclic nucleus. Thus and are each regarded as
being a single heterocyclic nucleus.

Two or more cyanine sensitizers:
This subclass is indented under subclass 572. Subject matter in which at least two of the added materials are cyanine compounds.

Inorganic material containing:
This subclass is indented under subclass 572. Subject matter in which at least one of the added materials is an inorganic compound.

Cyanine sensitizer:
This subclass is indented under subclass 572. Subject matter in which one of the added materials is an cyanine compound.