发明授权
- 专利标题: Photographic silver halide material
- 专利标题(中): 摄影卤化银材料
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申请号: US951920申请日: 1992-09-28
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公开(公告)号: US5270157A公开(公告)日: 1993-12-14
- 发明人: Peter Bell , Cuong Ly
- 申请人: Peter Bell , Cuong Ly
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX4133823 19911012
- 主分类号: G03C1/035
- IPC分类号: G03C1/035 ; G03C7/30 ; G03C7/305 ; G03C7/32 ; G03C1/46
摘要:
A colour photographic silver halide material having at least one silver halide emulsion layer which contains at least one colour coupler and in which the silver halide grains contain from 40 to 90 mol. % of AgCl and at least two zones differing in halide composition, the chloride content of the outer zone being at least 10 mol. % higher than that of the inner zone, which silver halide emulsion layer is associated with a DIR compound whose reaction with the oxidized colour developer has a rate constant k>2000 [1/mol.s] is distinguished by excellent sharpness and colour reproduction even when processed by a high speed process.
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