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    • 41. 发明授权
    • Color photographic film exhibiting increased red speed and sharpness
    • 彩色摄影胶片表现出增加的红色速度和锐度
    • US5998114A
    • 1999-12-07
    • US292147
    • 1999-04-15
    • Joseph F. BringleyJames A. Friday
    • Joseph F. BringleyJames A. Friday
    • G03C7/00G03C1/035G03C1/12G03C1/74G03C7/20G03C7/30G03C1/46
    • G03C7/3029G03C7/3022G03C7/3041
    • A color photographic element is disclosed comprised of a transparent film support and, coated on the support, a red recording layer unit containing the radiation-sensitive silver halide grains in a plurality of emulsion layers with each emulsion layer located to receive exposing radiation prior to an underlying emulsion layer containing silver halide grains of higher sensitivity than the silver halide grains located in the underlying emulsion layer. The red recording layer unit includes a red light reflective layer free of red absorbing dye and containing tabular silver halide grains having a thickness in the range of from 0.03 to 0.12 .mu.m, an average aspect ratio of greater than 20, and a coating coverage of 0.5 to 1.25 g/m.sup.2, and formed of greater than 50 mole percent bromide, based on silver, is located in the red recording layer unit interposed between two emulsion layers. Improvements in imaging speed and/or gamma with relatively low losses in image sharpness are realized.
    • 公开了一种彩色照相元件,其包括透明膜载体,并且在载体上涂覆红色记录层单元,该红色记录层单元含有多个乳剂层中的辐射敏感卤化银颗粒,每个乳剂层位于接收暴露辐射之前 下面的乳剂层含有比位于下面的乳剂层中的卤化银颗粒更高的灵敏度的卤化银颗粒。 红色记录层单元包括红色反射层,其不含红色吸收染料,并且含有厚度为0.03至0.12μm,平均长宽比大于20的片状卤化银颗粒和涂层覆盖度 0.5至1.25g / m 2,并且由基于银的大于50mol%的溴化物形成,位于介于两个乳剂层之间的红色记录层单元中。 实现了成像速度和/或伽马的改善,并具有图像清晰度相对较低的损失。