
基本信息:
- 专利标题: COLOR PHOTOGRAPHIC ELEMENT
- 专利标题(中):FARBPHOTOGRAPHISCHESELEMENT。
- 申请号:EP92901732.5 申请日:1991-12-17
- 公开(公告)号:EP0563181B1 公开(公告)日:1995-03-15
- 发明人: KRISHMAN, Chari , KEECH, John , SAWYER, John , SCHMOEGER, Jeffrey, Walter , ZENGERLE, Paul
- 申请人: EASTMAN KODAK COMPANY
- 申请人地址: 343 State Street Rochester, New York 14650-2201 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 14650-2201 US
- 代理机构: Brandes, Jürgen, Dr.
- 优先权: US631607 19901221
- 国际公布: WO9211573 19920709
- 主分类号: G03C7/30
- IPC分类号: G03C7/30
摘要:
A color photographic silver halide negative working duplicating element comprising a support having thereon at least one red-sensitive photographic silver halide emulsion layer comprising at least one cyan image-dye forming coupler; at least one green-sensitive photographic silver halide emulsion layer comprising at least one magenta image-dye forming coupler; and, at least one blue-sensitive photographic silver halide emulsion layer comprising at least one yellow image-dye forming coupler, provides improved images when (a) at least one of the layers comprises a unit of at least two layers including a first layer and a second layer, the first layer having a higher photosensitivity than the second layers and being farther from the support than the second layers; (b) the firt layers contain an image-dye forming coupler in an amount insufficient to react with all the oxidized developer formed during development after maximum exposure; (c) the image-dye forming couplers of the first layers being in a dispersion having a mean particle size of less than 0.14 micron; and, (d) the silver halide grains of the first layers having a mean grain volume less than 0.015 cubic micron. Such a photographic element is especially useful in motion picture film duplication providing reduction in granularity of the image.