公开(公告)号：US5306608A

公开(公告)日：1994-04-26

申请号：US962872

申请日：1992-10-19

Applicant: Kiyokatsu Kato

Inventor： Kiyokatsu Kato

IPC: G03C1/035 ,  G03C1/09 ,  G03C1/12 ,  G03C1/485 ,  G03C7/30

CPC classification number: G03C1/48576 ,  G03C7/3022 ,  Y10S430/141

Abstract: A direct positive photographic light-sensitive material comprises a support and a light-sensitive emulsion layer provided thereon which contains non-pre-fogged internal latent image type silver halide grains of a core/shell structure. The cores of the silver halide grains are treated with a spectral sensitizing dye and a chemical sensitizer.

Abstract translation: 直接正型感光材料包括载体和设置在其上的感光乳剂层，其含有核/壳结构的非预雾化的内部潜像型卤化银颗粒。 卤化银颗粒的核心用光谱增感染料和化学增感剂处理。