发明授权
- 专利标题: Photographic silver halide element with protective layer
- 专利标题(中): 具有保护层的摄影银色元件
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申请号: US511250申请日: 1990-04-19
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公开(公告)号: US5085981A公开(公告)日: 1992-02-04
- 发明人: Wolfgang Himmelmann , Prem Lalvani , Hans-Theo Buschmann , Gunter Helling
- 申请人: Wolfgang Himmelmann , Prem Lalvani , Hans-Theo Buschmann , Gunter Helling
- 申请人地址: DEX Leverkusen
- 专利权人: Agfa-Gevaert Aktiengesellschaft
- 当前专利权人: Agfa-Gevaert Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX3914567 19890503
- 主分类号: G03C1/76
- IPC分类号: G03C1/76 ; G03C1/95
摘要:
A photographic recording material comprising a support, at least one photosensitive silver halide emulsion layer, a protective layer on that side of the at least one silver halide emulsion layer remote from the support and, optionally a backing layer, the protective layer and/or the backing layer containing in combination (a) a polymeric compound (I) containing at least 0.2 mol-% recurring units corresponding to the following formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 may be the same of different and represent hydrogen, alkyl or halogen,L is a chemical bond or a standard binding link andX is a reactive group,and (b) a finely divided crystalline SiO.sub.2 dispersion having an average particle diameter (number average) of from 0.7 to 1.2 .mu.m and containing less than 0.2% by volume particles larger than 4 .mu.m in size, are distinguished by good retouchability in combination with good mechanical properties.
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