Material which is used to form a visible record by a reactive
or interactive, usually chemical or physico-chemical, phenomenon
or a method of using such a material to form a record. The formation
phenomenon is one of the following: (a) The chemical decomposition
of a colorless substance to form a substance having color; (b) the
chemical combination of two or more colorless chemical moieties
to produce a substance having color; (c) The further chemical change
of (a) or (b) above, to form a color different from an original
color; and (d) The chemical or physico-chemical complementarity between
the bottom surface of one sheet of a record receiver and the top
surface of an adjacent sheet with which the first sheet id associated.
Generally, the phenomenon in cases (a) through (d) is thought
about by the application to the record receiver of heat and/or
pressure in the areas to be "marked".
Coating Processes, appropriate subclasses for a method of making a record
receiver as herein, by coating substrate, and especially
subclasses 213.3+ for a process of making a solid microcapsule by
Stock Material or Miscellaneous Articles,
subclasses 402.2+ and 402.24 for composite microcapsules; and subclasses
411.1+ for composite material in general, many of which
may be used in or as record receivers; see especially subclasses
488.1+ for so-called "carbon paper",
and some other paper coated with transferable material.
Radiation Imagery Chemistry: Process, Composition,
or Product Thereof, appropriate subclass for radiation-sensitive (photos:graphic) materials
in general, including those intended to be used for making a record
by imagewise exposure to a radiant heat source, e.g., a laser. Where
a receiver is claimed which can function due to conductive imagewise
heating or radiant imagewise heating, the patent is classified in Class
430 and cross-referenced here (Class 503).
HAVING A COLORLESS COLOR FORMER, DEVELOPER THEREFORE OR
METHOD OF USE:
Material which is used to form a visible record by causing
a substance to react chemically to form a color where there was
no color, or to form a different color from the original, or a method
of using such material.
Note. Usually the color change occurs when a colorless chemical
entity, called a "color former" is brought to
a different state of electronic equilibrium by contacting the entity
with a "developer generally are kept separate on the unused recording
material, for example, by confining each reactant to a different,
mating surface of a plurality of sheets, by confining one or more
of the reactants to "microcapsules", etc. The
reactants are brought into contact by the application of pressure,
heat, etc., to localized areas of the recording material.
Stock Material or Miscellaneous Articles,
subclasses 402.2+ and 402.24 for microcapsules with liquid and solid
cores respectively. However, if the core material is disclosed to
be an expanding (blowing) agent see Class 521, subclass 50, (4)
Note for a limitation to those subclasses.
This subclass is indented under subclass 200. Subject matter , directed to a method of using a recording
material of the present type; such recording material in combination
with other articles which may at one time or another be used with
material; or such material in combination with an instrument or
part of the human body which can transmit the energy, for example,
heat, pressure, etc., needed to cause recording to take place.
This subclass is indented under subclass 200. Subject matter in which the color-former is such that breaking
up the color-former molecule) (e.g., by ionization, etc.) is sufficient
to form a color without the need for the color-former molecule or
fragment of it to react with another molecule.
This subclass is indented under subclass 200. Subject matter wherein the product is such that it can be
used to produce further copies of the record by a "printing",
that is, a nonphotos:graphic, technique.
Radiation Imagery Chemistry: Process, Composition,
or Product Thereof, appropriate subclasses for light sensitive materials suitable
for imagewise reproduction of visible materials and especially
subclass 5 for a radiation mask and/or a method of
This subclass is indented under subclass 200. Subject matter in which the final recording is in two or
more colors, other than the color of the background, or two or more
distinct shades of a single "color" or in which
the recording takes place by using two or more different color-producing
systems; e.g., a pressure responsive system plus a heat-responsive
system; a carbonless system plus a "carbon paper" type system,
Note. This subclass does not provide for a mere mixture of
color formers and/or developers.
This subclass is indented under subclass 200. Subject matter wherein a named substance which chemically
deactivates one or both of the reactants is employed to reduce,
extinguish or prevent the formation of a colored substance.
This subclass is indented under subclass 200. Subject matter in which the recording material contains
particles, other than merely color-former particles or developer
particles, which particles are designated as having a particular relative
or absolute size.
Note. The size-designated particles often are larger than
any reactive particles in the recording material, so that they may serve
to protect reactive particles from unwanted contact, e.g., "stilt" particles, etc.
This subclass is indented under subclass 200. Subject matter wherein a composition which makes up part
of the recording material has, as one of its constituents, a compound
or mixture or macromolecule which is characterized by its melting
Note. The recording material included herein generally are
those designed for color development in response to localized heating,
for example, by an electric stylus.
This subclass is indented under subclass 200. Subject matter which contains a substance, other than that
which reacts to form a color, which can affect (a) the spreading
of a liquid constituent of the recording material, (b) the transfer
of a constituent from one part, or (c) the darkness, lightness,
or other visual property of the final colored mark, or prevent changes
in the mark in the finished record.
This subclass is indented under subclass 200. Subject matter in which the color-former is dissolved or
dispersed in a named mineral oil having an additive or in a liquid
other than mineral oil named in the claims.
This subclass is indented under subclass 200. Subject matter in which the finely-divided color-former
masses and/or the developer particles are protected from
contact with other materials by use of a material named in the claims;
are enclosed or encapsulated by a material named in the claims or
are held to each other or to 9 other substances by a material named
in the claims.
This subclass is indented under subclass 200. Subject matter in which a claim names an organic material
(other than a synthetic resin made from a mixture which includes
phenol) which organic material has acid characteristics sufficient
to bring out the color of a color-former contacted therewith.
This subclass is indented under subclass 216. Subject matter in which a claim names a substance which,
under the influence of contact with the developer, changes from
colorless or otherwise ineffective for to a colored form or other
state suitable for recording information.
This subclass is indented under subclass 218. Subject matter in which a claim names an inorganic material
other than clay, which has acid characteristics sufficient to bring
out the color-former contacted therewith.
Note. This subclass provides for clay which has been subjected
to a specified treatment to alter or enhance its activity or characteristics.
This subclass is indented under subclass 200. Subject matter wherein the color-former is 0-phenolphthalien
anhydride (dihydroxydiphenyl phthalide anhydride) or compound derived from
it by substitution for a hydrogen.
This subclass is indented under subclass 221. Subject matter in which the color former compound has in
its molecule two or more fluoran moieties, or has a polycyclo ring
system in which a ring shares two of its carbon atoms with one other
ring, and two more of its carbons with second other ring.
This subclass is indented under subclass 200. Subject matter wherein the relative distance between color-former
and developer is specified; e.g., both in the same layer, on opposite sides
of the same carrier sheet, etc.
Material which is used to form a visible record comprising
plural leaves so associated that the bottom surface of a top leaf,
so as to produce a mark, usually upon the application of pressure in
a direction normal to the plane of the leaves.
Note. The interaction may comprise any chemical or physical
phenomenon and is usually dependent upon the complementarity of
the composition or physical characteristics of the facing surfaces;
in the usual case a frangible transfer surface on one sheet mates
with the adhesive surface of a receiver sheet.
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