G - Physics – 03 – C
Patent
G - Physics
03
C
96/193
G03C 1/46 (2006.01) G03C 7/34 (2006.01)
Patent
CA 2011730
Silver Halide Color Photographic Materials ABSTRACT OF DISCLOSURE Silver halide color photographic material compris- ing a support having coated thereon one or more silver halide emulsion layers, wherein at least one of said layers comprises in combination at least one of the cyan couplers having the following Formula (I) and at least one of the cyan couplers having the following Formula (II): Image Formula (I) wherein R1 is an aryl group, R2 is an alkyl group or an aryl group, R3 is a hydrogen atom, a halogen atom an alkyl group or an alkoxy group, and Z1 is a hydrogen atom, a halogen atom or a group which can be split off by the reaction of said coupler with the oxidized prod- uct of an aromatic primary amine-type color developing agent, Image Formula (II) wherein A is a -NHCO- group or a -CONH- group, R4 is an alkyl group, R5 is an alkyl group, R6 is a hydrogen at- om, a halogen atom, an alkyl group or an alkoxy group or R5 and R6 can combine to form a benzene ring, and Z2 is a hydrogen atom, a halogen atom or a group which can be split off by the reaction of said coupler with the oxi- dized product of an aromatic primary amine-type color developing agent. Such combination of cyan couplers, when associated with the silver halide color photographic materials, gives high sensitivity and, upon coupling with the oxi- dized aromatic primary amine-type color developing agents, cyan indoaniline dyes very stable to light, heat, humidity and to bleaching solutions which have a weak oxidation power or are exausted.
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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