申请人:Fuji Photo Film Co., Ltd.
公开号:US04618563A1
公开(公告)日:1986-10-21
A silver halide photographic light-sensitive material is described, comprising a support having thereon a light-sensitive silver halide emulsion layer having associated therewith a blocked photographic agent represented by formula (I) ##STR1## wherein A represents a photographically useful agent moiety, which may have a timing group; X.sup.1 and X.sup.2 each represents a carbonyl group, a sulfonyl group, or a sulfinyl group; Z represents an atomic group forming a 5-membered, 6-membered, or 7-membered ring; R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, a cycloalkyl group, an aryl group, an alkoxy group, an acyl group, a sulfonyl group, or a heterocyclic group; R.sup.3 represents an alkyl group, an alkenyl group, a cycloalkyl group, a heterocyclic group, an aryl group, or an aralkyl group; m represents 0, 1, or 2; n represents 0 or 1; and the total of m+n is 1, 2, or 3. The precursor of photographic agent is completely stable during the preservation of the photographic light-sensitive material and releases a photographically useful agent at a desired time during processing of the photographic light-sensitive material. The precursor can exhibit its function to a substantial degree under mild conditions, such as in a pH range of from 9 to 12.
该文描述了一种银卤化物光敏感感光材料,包括一个支撑体和在其上的一层具有光敏感银卤化物乳胶层,其与式(I)所代表的阻滞型摄影试剂相关联:
其中,A代表具有摄影用途的试剂基团,可能具有定时基团;X1和X2分别表示羰基基团、磺酰基或亚磺酰基;Z表示形成5、6或7元环的原子基团;R1和R2,可能相同或不同,分别表示氢原子、卤素原子、烷基、烯基、环烷基、芳基、烷氧基、酰基、磺酰基或杂环基;R3表示烷基、烯基、环烷基、杂环基、芳基或芳基烷基;m表示0、1或2;n表示0或1;m+n的总和为1、2或3。
摄影试剂的前体在光敏感感光材料的保存期间完全稳定,并在光敏感感光材料的处理期间在所需的时间释放摄影用途的试剂。前体可以在温和的条件下充分发挥其功能,例如在pH值为9到12的范围内。