发明授权
US06368780B1 Silver halide photographic material and image formation method 失效
卤化银照相材料和成像方法

Silver halide photographic material and image formation method
摘要:
A silver halide photographic material excellent in color generation, color reproduction and image fastness, which comprises at least one coupler represented by the following formula: wherein R1 represents an alkyl group which may be optionally substituted, with the proviso that an alkyl group substituted by a halogen atom alone and an alkyl group substituted by a halogen atom and an aryl group are excluded from R1; R2 and R3, which may be the same or different, each represents a hydrogen atom or a substituent; and X1 represents a group which can leave by coupling with an oxidation product of a color developing agent; and an image formation method using the same.
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