申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0378174A2
公开(公告)日:1990-07-18
A light-sensitive element for the diffusion transfer process which comprises a support having thereon a light-sensitive silver halide emulsion layer having associated therewith a yellow dye providing compound represented by the following general formula (I):
wherein CAR represents a carrier moiety which is capable of releasing a diffusible dye from the compound in correspondence or counter-correspondence to development under alkaline conditions; Link represents a group connecting CAR with a diffusible dye; m represents 0 or 1; the dotted lines mean that at least one of the dotted lines is a bond; R¹ represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an alkoxycarbonyl group, an aryloxycarbonyl group or a carbamoyl group; R² represents an alkyl group or an aryl group; and R³ represents an aryl group excepting an aryl group having the Hammett's σp value less than 0.01.
The yellow dye providing compound has a dye moiety whose transferability is high and whose hue is excellent and provides a stable yellow dye image which does not substantially change hue over a wide pH range
一种用于扩散转移工艺的光敏元件,它包括一个支撑体,支撑体上有一个光敏卤化银乳剂层,该乳剂层上有一个由下列通式(I)表示的提供黄色染料的化合物:
其中 CAR 代表载体分子,它能在碱性条件下与显影相应或相反地从化合物中释放出扩散染料;Link 代表连接 CAR 与扩散染料的基团;m 代表 0 或 1;虚线表示虚线中至少有一条是键;R¹ 代表氢原子、烷基、芳基、烷氧基、芳氧基、烷氧羰基、芳氧羰基或氨基甲酰基; R² 代表烷基或芳基;以及 R³ 代表芳基,但 Hammett's σp 值小于 0 的芳基除外。01.
提供黄色染料的化合物具有染料分子,其转移性高,色调优异,并提供稳定的黄色染料图像,在较宽的 pH 值范围内不会发生实质性色调变化。