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    • 1. 发明授权
    • Developer for silver halide photographic light-sensitive material
    • 用于卤化银照相感光材料的显影剂
    • US5364746A
    • 1994-11-15
    • US216765
    • 1994-03-23
    • Kenichi InoueTsuyoshi Mitsuhashi
    • Kenichi InoueTsuyoshi Mitsuhashi
    • G03C5/305
    • G03C5/305
    • A developer for developing a silver halide photographic material is disclosed. The developer comprises a compound represented by Formula 1 or Formula 2; ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 are each a hydrogen atom or an alkyl group having 1 to 3 carbon atoms provided that both of R.sub.1 and R.sub.2 are not hydrogen atoms at the same time; R.sub.5 is a hydroxy group, an amino group or an alkyl group having 1 to 3 carbon atoms; R.sub.6 and R.sub.7 are each a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, an acyl group having 1 to 18 carbon atoms or a --COOM.sub.2 group, provided that both of R.sub.1 and R.sub.2 are not hydrogen atoms at the same time, in the above M.sub.1 is a hydrogen atom, an alkali metal atom or an ammonium group; m is an integer 0, 1 or 2; and M.sub.2 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an alkali metal atom, an aryl group or an aralkyl group having not more than 15 carbon atoms. Formation of silver sludge in the developer is prevented.
    • 公开了用于开发卤化银照相材料的显影剂。 显影剂包含由式1或式2表示的化合物; (1)其中R1,R2,R3和R4各自为氢原子或具有1至3个碳原子的烷基,条件是R1和R2两者不同于氢原子 时间; R5是羟基,氨基或碳原子数1〜3的烷基; R6和R7各自为氢原子,具有1至5个碳原子的烷基,具有1至18个碳原子的酰基或-COOM 2基团,条件是R1和R2两者同时不是氢原子, 在上述M1中是氢原子,碱金属原子或铵基; m是整数0,1或2; M2为氢原子,碳原子数为1〜4的烷基,碱金属原子,芳基,碳原子数为15以下的芳烷基。 防止在显影剂中形成银污泥。