发明授权
US5283168A Silver halide emulsion sensitized with a heavy metal compound and a
thiourea compound
失效
卤化银乳剂用重金属化合物和硫脲化合物敏化
- 专利标题： Silver halide emulsion sensitized with a heavy metal compound and a thiourea compound
- 专利标题（中）： 卤化银乳剂用重金属化合物和硫脲化合物敏化
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申请号： US876263申请日： 1992-04-30
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公开(公告)号： US5283168A公开(公告)日： 1994-02-01
- 发明人: Roger W. Nelson , Edward G. Bourne
- 申请人： Roger W. Nelson , Edward G. Bourne
- 申请人地址： NY Rochester
- 专利权人： Eastman Kodak Company
- 当前专利权人： Eastman Kodak Company
- 当前专利权人地址： NY Rochester
- 主分类号： G03C1/015
- IPC分类号： G03C1/015 ; G03C1/06 ; G03C1/09
摘要：
The invention is generally accomplished when a heavy metal compound and a substituted thiourea sensitizer are used together as chemical sensitizers. There is a surprising increase in photographic efficiency and, therefore, in photographic sensitivity. This effect does not depend on the presence of a dye. The preferred heavy metal compound is potassium hexachloroiridate (IV), and the preferred thiourea is 3-acetamidophenyl thiourea.
公开/授权文献
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