发明名称 |
Photographic color developing composition containing calcium ion sequestering agent combination and method of use |
摘要 |
Concentrated and working strength photographic color developing compositions are stabilized with the inclusion of two specific types of calcium ion sequestering agents. One of the sequestering agents is a polyelectrolyte such as a polycarboxylic acid or salt thereof having a molecular weight of from about 2000 to about 100,000. The other one is a non-polymeric aminocarboxylic acid, polyphosphonic acid, or a salt thereof. The weight ratio of the first calcium ion sequestering agent to the second calcium ion sequestering agent is from about 1:1 to about 20:1. These compositions can be used to process color photographic materials such as color photographic papers.
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申请公布号 |
US6803179(B2) |
申请公布日期 |
2004.10.12 |
申请号 |
US20030639538 |
申请日期 |
2003.08.12 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
HAYE SHIRLEYANNE E.;HUSTON JANET M. |
分类号 |
G03C7/407;G03C5/26;G03C5/305;G03C7/413;(IPC1-7):G03C7/413 |
主分类号 |
G03C7/407 |
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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