| 发明名称 |
DIFFUSION TRANSFER SYSTEM COMPRISING DYE DEVELOPERS, A PYRAZOLONE AND AN ONIUM COMPOUND |
| 摘要 |
Improved color separation is achieved in color diffusion transfer systems such as multicolor dye developer systems by processing exposed photosensitive elements in the presence of a 5-pyrazolone unsubstituted in the 4-position in combination with an onium compound.
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| 申请公布号 |
US3649265(A) |
申请公布日期 |
1972.03.14 |
| 申请号 |
USD3649265 |
申请日期 |
1970.05.06 |
| 申请人 |
EASTMAN KODAK CO. |
发明人 |
PAUL HAROLD STEWART |
| 分类号 |
G03C8/00;G03C8/08;(IPC1-7):G03C7/00;G03C5/54;G03C5/30 |
主分类号 |
G03C8/00 |
| 代理机构 |
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