发明名称 |
Toning of photographic print material |
摘要 |
There is described a photographic developing solution which comprises as an image toning agent a compound of formula I: <IMAGE> where Ar is an aromatic or heteroaromatic ring which may be substituted, in a concentration of at least 0.00035 moles/liter.
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申请公布号 |
US5688635(A) |
申请公布日期 |
1997.11.18 |
申请号 |
US19960643683 |
申请日期 |
1996.05.06 |
申请人 |
ILFORD LIMITED |
发明人 |
PARKER, MICHAEL JOHN;LANNON, ANTHONY MARTIN |
分类号 |
G03C5/305;G03C5/46;(IPC1-7):G03C5/305 |
主分类号 |
G03C5/305 |
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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