Invention Grant
- Patent Title: Method for precipitating separation of photosensitive silver halide particle dispersion and silver salt photothermographic dry imaging material using thereof
- Patent Title (中): 使用其分离光敏卤化银颗粒分散体和银盐光热成像干燥成像材料的方法
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Application No.: US11558609Application Date: 2006-11-10
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Publication No.: US07316895B2Publication Date: 2008-01-08
- Inventor: Miyuki Teranishi , Hiroto Ito
- Applicant: Miyuki Teranishi , Hiroto Ito
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Medical & Graphic Inc.
- Current Assignee: Konica Minolta Medical & Graphic Inc.
- Current Assignee Address: JP Tokyo
- Agency: Lucas & Mercanti, LLP
- Priority: JP2005-336786 20051122
- Main IPC: G03C5/18
- IPC: G03C5/18 ; G03C5/26 ; G03C1/00 ; G03C1/005 ; G03C1/494
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.
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