| 发明名称 |
CALCIUM ION STABLE PHOTOGRAPHIC COLOR DEVELOPING COMPOSITION AND METHO |
| 摘要 |
A color developing composition is stable in the presence of calcium ion because of the presence of two specific types of polyphosphonic acid sequestering agents. The composition also comprises a color developing agent in free base form and an antioxidant for the color developing agent. The mixture of sequestering agents includes a polyaminopolyphosphonic acid and either a hydroxyalkylidenediphosphonic acid or morpholinomethanediphosphonic acid. The composition can be used to provide images in various color photographic silver halide materials.
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| 申请公布号 |
US2002018968(A1) |
申请公布日期 |
2002.02.14 |
| 申请号 |
US19990438121 |
申请日期 |
1999.11.10 |
| 申请人 |
HAYE SHIRLEYANNE E.;HUSTON JANET M.;DARMON CHARLES M.;CHRIST CHARLES S.;SCHWARTZ PAUL A.;HENRY WILLIAM G. |
发明人 |
HAYE SHIRLEYANNE E.;HUSTON JANET M.;DARMON CHARLES M.;CHRIST CHARLES S.;SCHWARTZ PAUL A.;HENRY WILLIAM G. |
| 分类号 |
G03C7/407;G03C5/26;G03C5/305;G03C7/413;G03C7/42;(IPC1-7):G03C5/30;G03C5/40 |
主分类号 |
G03C7/407 |
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