申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0460616A1
公开(公告)日:1991-12-11
Disclosed is a silver halide photographic material having a hydrophilic colloid layer which contains a dispersion of fine solid grains of at least one dye of formula (I):
where R1 and R2 each represents an alkyl group, an aryl group, a cyano group or a group of COOR3, COR3, CONR4R5, NR4R5, NR4COR3, NR4CONR4R5, OR3, SR3, SOR3 or S02R3; R3 being an alkyl group or an aryl group, and R4 and R5 each being a hydrogen atom, an alkyl group or an aryl group, and R3 and R4 or R4 and Rs being optionally bonded to each other to form a 5-membered or 6-membered ring; L1, L2 and L3 each represents a methine group; and n represents 0 or 1; provided that R1, R2, L1, L2 and L3 must not have an ionizable proton-having group or a salt thereof. The material preferably has, in addition to the dispersion of fine solid grains of at least one dye of formula (I), a dispersion of fine solid grains of at least one dye of formula (II):
where R21 and R23 each represents a hydrogen atom, an alkyl group or an aryl group; R22 and R24 each represents an alkyl group, an aryl group, or a group of OR26, COOR26, COR25, SR26, SOR25, SO2R25, CONR26R27, NR26COR25, NR26CONR26R27 or NR25R26, or a cyano group; R25 being an alkyl group or an aryl group, and R26 and R27 each being a hydrogen atom, an alkyl group or an aryl group, and R25 and R26 or R26 and R27 being optionally bonded to each other to form a 5-membered or 6-membered ring; and L21, L22 and L23 each represents a methine group; provided that the formula has at least one aryl group having at least one substituent selected from the group consisting of a carboxylic acid group, a sulfonamide group and an arylsulfamoyl group except for the case where R21 and R23 are both hydrogen atoms. The dyes (I) and (II) color only a hydrophilic colloid layer containing them, and they do not diffuse to any other layers during storage of the material. After developed, the dyes (I) and (II) are rapidly decolored.
本发明公开了一种具有亲水胶体层的卤化银感光材料,该胶体层含有至少一种式 (I) 染料的细小固体颗粒的分散体:
其中 R1 和 R2 分别代表烷基、芳基、氰基或 COOR3、COR3、CONR4R5、NR4R5、NR4COR3、NR4CONR4R5、OR3、SR3、SOR3 或 S02R3 的基团;R3 为烷基或芳基,R4 和 R5 分别为氢原子、烷基或芳基,R3 和 R4 或 R4 和 Rs 可选择相互键合以形成 5 元环或 6 元环;L1、L2 和 L3 各代表一个亚甲基;n 代表 0 或 1;但 R1、R2、L1、L2 和 L3 不得具有可电离的含质子基团或其盐。除至少一种式(I)染料的细小固体颗粒分散体外,该材料最好还具有至少一种式(II)染料的细小固体颗粒分散体:
其中 R21 和 R23 各自代表氢原子、烷基或芳基;R22 和 R24 各自代表烷基、芳基或 OR26、COOR26、COR25、SR26、SOR25、SO2R25、CONR26R27、NR26COR25、NR26CONR26R27 或 NR25R26 的基团或氰基;R25 为烷基或芳基,R26 和 R27 各为氢原子、烷基或芳基,R25 和 R26 或 R26 和 R27 可选择相互键合以形成 5 元环或 6 元环;以及 L21、L22 和 L23 各代表一个甲基;条件是除了 R21 和 R23 均为氢原子的情况外,式中至少有一个芳基具有至少一个选自羧酸基、磺酰胺基和芳基氨基磺酰基的取代基。染料(I)和(II)只对含有它们的亲水胶体层着色,在材料储存期间不会扩散到其他层。显影后,染料(I)和(II)会迅速脱色。