发明公开
EP1199599A2 Color photographic element containing speed improving compound in combination with reflecting material
审中-公开
含有速度增强组合化合物有反射材料的彩色照相元件
- 专利标题： Color photographic element containing speed improving compound in combination with reflecting material
- 专利标题（中）： 含有速度增强组合化合物有反射材料的彩色照相元件
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申请号： EP01203774.3申请日： 2001-10-05
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公开(公告)号： EP1199599A2公开(公告)日： 2002-04-24
- 发明人: Bringley, Joseph F., c/o Eastman Kodak Company , Friday, James A., c/o Eastman Kodak Company , Singer, Stephen Paul, c/o Eastman Kodak Company , Vitale, Marcello, c/o Eastman Kodak Company
- 申请人： EASTMAN KODAK COMPANY
- 申请人地址： 343 State Street Rochester, New York 14650 US
- 专利权人： EASTMAN KODAK COMPANY
- 当前专利权人： EASTMAN KODAK COMPANY
- 当前专利权人地址： 343 State Street Rochester, New York 14650 US
- 代理机构： Nunney, Ronald Frederick Adolphe
- 优先权： US690310 20001017
- 主分类号： G03C7/392
- IPC分类号： G03C7/392
摘要：
Disclosed is a color silver halide photographic element comprising a support bearing:
(1) a light sensitive silver halide emulsion layer;
(2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a layer adjacent to it; and
(3) a light reflecting silver halide material;
provided that the heterocycle compound and the light reflecting material are located either (a) in different layers of the element located close enough to each other so that a super-additive speed increase is realized or (b) in the same light sensitive layer. The invention provides improved light sensitivity.
(1) a light sensitive silver halide emulsion layer;
(2) a nitrogen heterocycle with a minimum of three heteroatoms that does not react with oxidized developer, does not contain free thiol substituents, and has a ClogP sufficient to increase the photographic speed of said element compared to the same element without the compound, said heterocycle compound located either in said light sensitive layer or in a layer adjacent to it; and
(3) a light reflecting silver halide material;
provided that the heterocycle compound and the light reflecting material are located either (a) in different layers of the element located close enough to each other so that a super-additive speed increase is realized or (b) in the same light sensitive layer. The invention provides improved light sensitivity.
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