DIFF Subgroup Additional Only
G03C 2007/3206 Full Title
Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes (diffusion transfer processes G03C8/00) > Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials > Colour coupling substances (G03C7/305, G03C7/388 take precedence; )