发明名称 Direct positive silver halide elements
摘要 Direct positive silver halide emulsions are provided which contain fogged silver halide grains with a layered grain structure wherein the external shell of the silver halide grains comprise up to 20 mole % of silver iodide based on the silver halide of the shell. The emulsions show improved sensitivity and produce images of improved maximum density.
申请公布号 US4059450(A) 申请公布日期 1977.11.22
申请号 US19730417499 申请日期 1973.11.20
申请人 AGFA-GEVAERT N.V. 发明人 VANASSCHE, WILLY JOSEPH;PATTYN, HERMAN ALBERIK;MOISAR, ERIK;KLOTZER, SIEGHART
分类号 G03C1/485;(IPC1-7):G03C1/36;G03C1/28 主分类号 G03C1/485
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