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IPC Subgroup
G03C 7/32

Colour-coupling substances

Introduced: September 1968

Last revised: January 2006

Full Title

Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes > Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials > Colour-coupling substances

Classification Context

Section:
PHYSICS
Class:
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
Subclass:
PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR OR STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY

Related Keywords

COUPLING(S) -compounds used in colour photography

4 direct subcodes

Child Classifications

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  • G03C 7/327 Macromolecular coupling substances
  • G03C 7/333 Coloured coupling substances, e.g. for the correction of the coloured image
  • G03C 7/34 Couplers containing phenols