Photographic materials and processes comprising color-forming
sulfonamidodiphenylamine dye precursors and corresponding phenazine dyes
    4.
    发明授权
    Photographic materials and processes comprising color-forming sulfonamidodiphenylamine dye precursors and corresponding phenazine dyes 失效
    摄影材料和方法,包括着色形成磺酰氨基二苯胺染料前体和相应的吩嗪染料

    公开(公告)号:US4368246A

    公开(公告)日:1983-01-11

    申请号:US280673

    申请日:1981-07-06

    摘要: In a photographic material for producing a dye image or a dye image and silver image comprising (1) a photographic metal salt, such as photographic silver halide, and (2) a dye precursor, improved images are provided by means of a color-forming para-sulfonamidodiphenylamine dye precursor having one to two sulfonamido groups in positions ortho to the --NH-- moiety separating the two phenyl groups of the sulfonamidodiphenylamine and wherein the sulfonamidodiphenylamine, in oxidized form, intramolecularly reacts to produce a sulfonamido-substituted phenazine dye. An exposed photographic material containing the color-forming sulfonamidodiphenylamine dye precursor is processed to produce a negative phenazine dye-enhanced silver image. Alternatively, the exposed photographic material is processed to produce a positive phenazine dye image.

    摘要翻译: 在用于制备染料图像或染料图像和银图像的照相材料中,包括(1)照相卤化银等照相金属盐和(2)染料前体,通过成色提供改进的图像 对 - 磺酰氨基二苯胺染料前体,其在与磺酰胺基二苯胺的两个苯基分离的-NH-部分的邻位上具有一至两个亚磺酰氨基,其中以氧化形式分子内反应的磺酰氨基二苯胺产生亚磺酰氨基取代的吩嗪染料。 处理含有着色形成磺酰氨基二苯胺染料前体的曝光的照相材料以产生阴性吩嗪染料增强的银图像。 或者,曝光的照相材料被处理以产生正吩嗪染料图像。