Application of activated arylhydrazides to silver halide photography
    1.
    发明授权
    Application of activated arylhydrazides to silver halide photography 失效
    活性芳基酰肼应用于卤化银摄影

    公开(公告)号:US4478928A

    公开(公告)日:1984-10-23

    申请号:US493480

    申请日:1983-05-11

    CPC分类号: G03C1/48561 G03C1/061

    摘要: The use of sulfinic acid radical substituted arylhydrazides in producing images in silver halide photographic elements is disclosed. The sulfinic acid radical substituted arylhydrazide can be incorporated in photographic silver halide, emulsions, and photographic elements. The sulfinic acid radical substituent is capable of activating the arylhydrazides, particularly for use at a lower alkaline pH. In negative working surface latent image forming emulsions the sulfinic acid radical substituted arylhydrazides permit higher speed or contrast to be achieved. In direct positive internal latent image forming emulsions increased nucleation activity and reduced rereversal can be achieved.

    摘要翻译: 公开了使用亚磺酸根取代的芳基酰肼在卤化银照相材料中产生图像。 亚磺酸基取代的芳基酰肼可以掺入照相卤化银,乳液和照相元件中。 亚磺酸基取代基能够活化芳基酰肼,特别是在较低的碱性pH下使用。 在负工作表面潜像形成乳液中,亚磺酸基取代的芳基酰肼允许实现更高的速度或对比度。 在直接正性内部潜像形成乳液中,可以实现增加的成核活性和减少的再反转。