Cooperative Patent Classification


CPC Definition - Subclass G03C

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Last Updated Version: 2016.11
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES (for photomechanical purposes G03F); PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY (photographic processes characterised by the use or manipulation of apparatus classifiable per se in subclass G03B, see G03B; photomechanical production of textured or patterned surfaces G03F; electrophotography, magnetography G03G)
Photosensitive materials (photosensitive materials for multicolour processes G03C 7/00; for diffusion transfer processes G03C 8/00; photosensitive glass C03C 4/04)
Definition statement

This place covers:

Photographic materials in general including additives, compositions, and structural details of the layered products, and their manufacture. When the material is specifically intended for multi-colour use, it is classified in G03C 7/00.

Photosensitive compositions based on metal salts, diazonium compounds and photochromic compounds.

Relationships with other classification places

G03B covers cameras

G03H covers holographic materials

G11B 7/00 covers optical recording materials

References
Limiting references

This place does not cover:

Photosensitive compositions based on photopolymers

Informative references

Attention is drawn to the following places, which may be of interest for search:

Coating processes or apparatus

Dyes as such

Photochromic substances as such

Special rules of classification

The invention per se is classified in the last appropriate place. If necessary, several classifications can be given.

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

T-grains

Tabular grains

DP emulsions

Direct positive emulsions

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "tabular", "plate-like", "planar", "flaky", "high-aspect-ratio grains" and "tabular grains"
  • "protective", "top", "topmost", "upper", "uppermost", "cover", "protection", "outer", "outermost", "overlying", "overcoat", "surface layers" and "protective layers"
  • "subbing", "anchoring", "priming", "precoat", "undercoat", "bonding", "substrate layers" and "subbing layers"
Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives (wrapping materials in general B65D)
Definition statement

This place covers:

Packages and wrapping materials for photographic films and other photosensitive materials.

References
Limiting references

This place does not cover:

Packaging of processing agents

Holders for X-ray films

Informative references

Attention is drawn to the following places, which may be of interest for search:

Packaging materials as such

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "can", "magazine", "container", "canister", "patrone", "cartridge", "cassette", "case", "box", "bag", "packet", "holder", "vessel", "wrapping material" and "packaging material"
Photographic processes or agents therefor; Regeneration of such processing agents (multicolour processes or agents therefor G03C 7/00; diffusion-transfer processes or agents therefor G03C 8/00; stereo-photographic processes G03C 9/00; photomechanical processes G03F)
Definition statement

This place covers:

Photographic processes in general applied to the materials of G03C 1/00 up to the production of the final processed print image including picture taking, processing of the exposed photosensitive materials and printing.

Ancilliary processes, e.g. sensitometry, regeneration and replenishment of processing agents, and image treatment, e.g. toning, and packaging of processing agents.

Relationships with other classification places

G03D covers apparatus for processing exposed photographic materials

G03C 11/00 covers auxiliary processes applied to the final processed printed material including drying.

References
Limiting references

This place does not cover:

Photolithographic and photomechanical processes

Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes (diffusion transfer processes G03C 8/00)
Definition statement

This place covers:

Photographic materials intended for multi-colour use.

Treatment processes for said materials.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Metal chelates

Special rules of classification

Combinations of couplers and additives need to be mentioned in an independent claim

Combinations of couplers of different kinds G03C 7/3225

Combinations of couplers of the same kind G03C 7/342, G03C 7/365, G03C 7/3805

Combinations of couplers and DIR G03C 7/3225

Combination of additives G03C 7/39296

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

DIR

Diffusion inhibitor releasing

BAR

Bleaching accelerator releasing

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "colour (forming) coupler", "dye (forming) coupler", "image (forming) coupler" and "coupler"
Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
Definition statement

This place covers:

Photosensitive materials intended for diffusion-transfer use.

Processing such materials.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Photothermoraphy

Stereo-photographic or similar processes
Definition statement

This place covers:

Stereophotographic processes: producing three-dimensional images.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Stereoscopic photography

Synonyms and Keywords

In patent documents, the following words/expressions are often used as synonyms:

  • "lenticular screens" and "parallax stereogram"
  • "light polarisation" and "vectographic image"
  • "separate colour images" and "anaglyph"
Auxiliary processes in photography (characterised by the apparatus used G03D 15/00)
Definition statement

This place covers:

Drying during photographic processing.

Processes applied after the production of the final printed product.

Recovery of materials from coated photographic products.

Cleaning of photographic processing and manufacturing apparatus.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Obtaining noble metals

Obtaining metals otherwise

Electrolytic recovery of metals

Drying in general

Apparatus for drying of photographic materials

Special rules of classification

Digital marking is classified in G03C 11/02.