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    • 5. 发明授权
    • Silver halide photographic light-sensitive material
    • 卤化银照相感光材料
    • US06200742B1
    • 2001-03-13
    • US09536983
    • 2000-03-29
    • Yasuhiro KatoYasuhiro ShimadaMario Aoki
    • Yasuhiro KatoYasuhiro ShimadaMario Aoki
    • G03C108
    • C07D498/04G03C7/382
    • A silver halide photographic light-sensitive material including a support and at least one light-sensitive layer formed on the support, wherein at least one of the light-sensitive layers contains at least one of the couplers represented by the following formula (I): wherein Z represents an atomic group that comprises a carbon atom and/or a nitrogen atom which, together with N—C═C, form a 5- or 6-member aromatic ring; R represents a substituent, and when there are a plurality of R, the R can be same or different, and may be coupled to each other so as to form a fused ring; m represents an integer of from 1 to 4; and X represents a carbonyl group, a methylene group, or a >C═N—Rn group wherein Rn represents a substituent The silver halide photographic light-sensitive material, which has excellent color reproducibility and sharpness and has good color image light-fastness, can be obtained by including therein a coupler which can provide a dye which has excellent hues and storage stability of an image, and whose molar extinction coefficient is high. Also, a method of preparing an azo dye by a coupling reaction of a compound represented by formula (I) and an oxidized p-phenylenediamine derivative is disclosed.
    • 一种卤化银摄影感光材料,其包括支撑体和形成在载体上的至少一个感光层,其中至少一个感光层含有由下式(I)表示的至少一种成色剂: 其中Z表示包含碳原子和/或氮原子的原子团,其与NC = C一起形成5-或6-元芳环; R表示取代基,当存在多个R时,R可以相同或不同,并且可以彼此偶联以形成稠环; m表示1〜4的整数, X表示羰基,亚甲基或C = N-Rn基团,其中Rn表示取代基。具有优异的颜色再现性和清晰度并且具有良好的彩色图像耐光性的卤化银照相感光材料, 可以通过在其中包含能够提供具有优异的图像色调和储存稳定性并且其摩尔消光系数高的染料的成色剂来获得。 此外,公开了通过式(I)表示的化合物与氧化的对苯二胺衍生物的偶联反应制备偶氮染料的方法。