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    • 8. 发明授权
    • Photographic light-sensitive material
    • 摄影感光材料
    • US4618563A
    • 1986-10-21
    • US641101
    • 1984-08-15
    • Mitsunori OnoIsamu ItohKeiji Mihayashi
    • Mitsunori OnoIsamu ItohKeiji Mihayashi
    • G03C7/26C07D401/12C07D403/12C07D403/14C07D413/12C07D417/12G03C1/06G03C7/00G03C7/305G03C8/08G03C8/10G03C1/40G03C1/08G03C1/34G03C5/54
    • G03C7/30511G03C8/10Y10S430/156Y10S430/158Y10S430/159Y10S430/16
    • 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.
    • 描述了一种卤化银照相感光材料,其包括其上具有感光卤化银乳剂层的载体,其具有与式(I)表示的封闭的感光剂相关联,其中A表示摄影有用的试剂部分,其中 可能有一个时间组; X1和X2各自表示羰基,磺酰基或亚磺酰基; Z表示形成5元,6元或7元环的原子团; R 1和R 2可以相同或不同,各自表示氢原子,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,芳基或芳烷基; m表示0,1或2; n表示0或1; 并且m + n的总和为1,2或3.照相剂的前体在照相感光材料的保存期间是完全稳定的,并且在照相感光材料的处理期间在期望的时间释放照相用的试剂, 敏感材料。 前体可以在温和条件下,例如在9至12的pH范围内显着地发挥其功能。