发明名称 |
5,5{40 ,6,6{40 -Tetrahydroxy-3,3,3{40 ,3{40 -tetramethyl-bis-spirohydrindene auxiliary developers |
摘要 |
A photographic diffusion transfer color process comprising image exposing a photographic material having at least a silver halide emulsion layer and a layer containing a dye developer adjacent the silver halide emulsion layer and then treating the exposed silver halide emulsion layer with an alkaline solution to immobilize the dye developer at the exposed area while the dye developer at the unexposed area of the silver halide emulsion layer is transferred by diffusion to an image-receiving material, wherein the alkaline solution treatment is conducted in the presence of 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-bis-1,1'-spirohydrindene.
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申请公布号 |
US3909263(A) |
申请公布日期 |
1975.09.30 |
申请号 |
US19730424961 |
申请日期 |
1973.12.14 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
YOSHIDA, YOSHINOBU;SHISHIDO, TADAO |
分类号 |
G03C8/36;G03C8/16;(IPC1-7):G03C7/00;G03C1/40;G03C5/30;G03C5/54 |
主分类号 |
G03C8/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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