申请人:FUJI PHOTO FILM CO., LTD.
公开号:EP0125523A2
公开(公告)日:1984-11-21
A silver halide photographic light-sensitive material which comprises a support having thereon a light-sensitive silver halide emulsion layer, wherein the photographic light-sensitive material contains a blocked photographic agent therein represented by formula (I):
wherein A represents a photographic agent moiety which is bonded to a blocking moiety through a hetero atom or a group which is bonded to a blocking moiety through a hetero atom and capable of releasing a photographic agent upon a subsequent reaction after the group is released; Y represents a hydrogen atom or a substituent; and Z represents an atomic necessary to form a carbocyclic ring or a heterocyclic ring.
The precursor of photographic agent is completely stable during the preservation of the photographic light-sensitive material and releases a photographic agent at a desired time upon the processing of the photographic light-sensitive material. The precursor also exhibits its function to a substantial degree over a wide range of pH.
一种卤化银感光材料,它包括在其上具有感光卤化银乳剂层的支撑体,其中感光材料含有由式(I)表示的封端感光剂:
其中 A 代表通过杂原子与封端基键合的感光剂分子,或通过杂原子与封端基键合的基团,该基团在释放后的后续反应中能够释放感光剂;Y 代表氢原子或取代基;Z 代表形成碳环或杂环所需的原子。
感光剂前体在感光材料保存期间是完全稳定的,并在感光材料加工时在所需时间释放出感光剂。前体还能在很宽的 pH 值范围内充分发挥其功能。