发明名称 Fogged, direct-positive silver halide emulsion containing a gallium sulfide semiconductor
摘要 The present invention relates to photography and, more particularly, to a novel radiation recording photographic element which comprises a direct positive photosensitive element which includes, in combination, a particulate dispersion of fogged silver halide crystals, adapted to discharge the fogged silver halide upon exposure to electromagnetic radiation actinic thereto, having associated therewith in electron accepting relationship a semiconductor adapted to accept electrons from said silver halide crystals as a function of the exposure of the crystals to incident electromagnetic radiation actinic thereto.
申请公布号 US4009041(A) 申请公布日期 1977.02.22
申请号 US19740511462 申请日期 1974.10.03
申请人 POLAROID CORPORATION 发明人 LEVY, BORIS
分类号 G03C1/28;G03C1/485;(IPC1-7):G03C1/28;G03C1/02 主分类号 G03C1/28
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