发明名称 DIRECT-POSITIVE PHOTOGRAPHIC ELEMENTS CONTAINING MULTIPLE LAYERS
摘要 This invention relates to direct-positive silver halide elements comprising (1) duplicate layers containing silver halide emulsions having substantially the same light-response characteristics and (2) means for providing a sensitivity difference between said duplicate layers of at least 0.5 log exposure. In certain preferred embodiments, relatively light-insensitive absorbing silver halide emulsions and/or light-absorbing dyes are used in an interlayer to provide an effective density of 0.1 to 1.5.
申请公布号 US3647463(A) 申请公布日期 1972.03.07
申请号 USD3647463 申请日期 1969.08.14
申请人 EASTMAN KODAK CO. 发明人 ROBERT C. TABER;JAMES E. KOLLER
分类号 G03C1/46;G03C1/485;G03C1/825;(IPC1-7):G03C1/76 主分类号 G03C1/46
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