Method for precipitating separation of photosensitive silver halide particle dispersion and silver salt photothermographic dry imaging material using thereof
US7316895B2 · kind B2 · utility
2Cited by
1References
6Claims
0Family size
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Key dates
| Filing date | Nov 10, 2006 |
| Grant date | Jan 8, 2008 |
| Priority date | — |
| Expiry date | Nov 10, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03C1/49818
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method for separating photosensitive silver halide particles by precipitation from a dispersion comprising the silver halide particles and a protective colloid of a natural polymer, the method comprising the step of mixing the dispersion with an organic polymer having a logarithm value of n-octanol/water partition coefficient (being a log P value) of 0.8 to 2.0 so as to separate the silver halide particles from the dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.