发明授权
- 专利标题: Process for preparing a thin tabular grain silver halide emulsion
- 专利标题(中): 制备薄片状卤化银乳剂的方法
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申请号: US173300申请日: 1993-12-22
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公开(公告)号: US5380642A公开(公告)日: 1995-01-10
- 发明人: Michael R. Roberts , Wai K. Lam , Wayne A. Bowman , John E. Keevert, Jr. , Byron H. Rubin
- 申请人: Michael R. Roberts , Wai K. Lam , Wayne A. Bowman , John E. Keevert, Jr. , Byron H. Rubin
- 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 ; G03C1/005 ; G03C1/035 ; G03C1/047 ; G03C1/053 ; G03C1/07 ; G03C1/04
摘要:
A process for preparing a thin tabular grain silver halide emulsion comprised of silver halide grains which have a halide content of at least 50 mole percent bromide, wherein tabular grains of less than 0.15 micrometers in thickness and having an aspect ratio of greater than 8 account for greater than 50 percent of the total grain projected area, comprises the steps of nucleating the silver halide grains with a gelatino-peptizer or with the use of certain synthetic polymers that serve as effective nucleation peptizers and then growing the silver halide grains with the use of either a gelatino-peptizer or certain synthetic polymers that serve as effective growth peptizers.
公开/授权文献
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