申请人:KONICA CORPORATION
公开号:EP0304856A2
公开(公告)日:1989-03-01
A silver halide photographic light sensitive materail is disclosed, which is contains a novel cyan coupler excellent in spectral absorption, absorption coefficient and fastness. The cyan coupler is represented by the following Formula I;
wherein R₁ and R₂ each represent a substituent; R₃ represents a hydrogen atom, an alkyl group, an aryl group, a -COR₄ group, a -COOR₄ group, a
group, an -SO₂R₄ or an
group in which R₄ represents an alkyl group an aryl group or a heterocyclic group, R₅ represents a hydrogen atom or an alkyl group; X represents a hydrogen atom or a group capable of being split off upon reaction with the oxidized product of a color developing agent; m represent an integer of from 0 to 4; and n represents an integer of from 0 to 5.
本发明公开了一种卤化银感光材料,它含有一种新型的青色耦合剂,该耦合剂在光谱吸收、吸收系数和牢度方面都非常出色。该青色耦合剂由下式 I 表示;
基团、-SO₂R₄ 或
其中,R₄ 代表烷基、芳基或杂环基,R₅ 代表氢原子或烷基;X 代表氢原子或与显色剂的氧化产物反应后可分离的基团;m 代表 0 至 4 的整数;n 代表 0 至 5 的整数。