申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0217353A2
公开(公告)日:1987-04-08
A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, said silver halide emulsion layer containing a pyrazoloazole series magenta coupler represented by general formula [I]
wherein, R' and R2 each represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a releasing group which is released at the reaction with the oxidation product of an aromatic primary amine developing agent; at least one of said R' and R2 is an alkyl group having a secondary or tertiary carbon atom directly bonded to the skeleton, at least one of said R, and R2 is a sulfonamidoalkyl group or a sulfamoylalkyl group; and the magenta coupler may form a dimer or more polymer at the position of said R', R2 or X.
By the combined use of high boiling point organic solvent and ultraviolet absorbent, light fastness and coloring property are markedly improved.
一种卤化银彩色感光材料,包括一个支撑体,支撑体上至少有一层卤化银乳剂层,所述卤化银乳剂层含有通式[I]表示的吡唑啉系列品红耦合剂
其中,R'和 R2 各代表一个氢原子或一个取代基;X 代表一个氢原子或一个释放基团,该释放基团在与芳香族伯胺显色剂的氧化产物反应时被释放;所述 R' 和 R2 中至少有一个是烷基,该烷基具有直接键合到骨架上的仲碳原子或叔碳原子,所述 R,和 R2 中至少有一个是磺酰胺基烷基或磺酰基烷基;洋红偶联剂可在所述 R'、R2 或 X 的位置上形成二聚体或更多的聚合物。
通过同时使用高沸点有机溶剂和紫外线吸收剂,耐光牢度和着色性能得到明显改善。