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    • 46. 发明授权
    • Silver halide photographic material containing isomethine dyes
    • 含有异色素染料的卤化银照相材料
    • US5328819A
    • 1994-07-12
    • US928433
    • 1992-08-12
    • Shigeru OhnoYukio MiyakiShigeru Yamazaki
    • Shigeru OhnoYukio MiyakiShigeru Yamazaki
    • C07C251/24C09B53/02C09B55/00G03C1/35G03C1/83G03C1/84
    • C09B53/02G03C1/83
    • An azomethine dye represented by the following general formula (I) ##STR1## wherein A represents a dye residue formed by removing one hydrogen atom from an indophenol or indoaniline dye; L represents a divalent bonding group; and Z represents a non-metallic atomic group required for forming a three-membered to eight-membered heterocyclic ring together with N, provided that a carbonyl group is not directly bonded to N in the heterocyclic ring. Also disclosed is a silver halide photographic material having an emulsion layer with a covering power of at least 60, and wherein the silver halide photographic material contains at least one member of the dyes of general formula (I) in such an amount that an increase in transmission density in unexposed areas caused by the incorporation of the dye therein after development is not more than 0.06.
    • 由以下通式(I)表示的偶氮甲碱染料其中A表示通过从靛酚或吲哚苯胺染料中除去一个氢原子而形成的染料残留物; L表示二价键合基​​团; 并且Z表示与N一起形成三元至八元杂环所需的非金属原子团,条件是羰基不与杂环中的N直接键合。 还公开了一种卤化银照相材料,其具有覆盖功率至少为60的乳剂层,并且其中卤化银照相材料含有至少一种通式(I)染料的成分,其量使得 显影后由染料引入引起的未曝光区域的透射密度不大于0.06。