发明授权
US06548236B1 Core/shell silver donors for photothermographic systems comprising an oxidatively less reactive shell
失效
用于光热照相系统的核/壳银供体，其包含氧化反应性较小的壳
- 专利标题： Core/shell silver donors for photothermographic systems comprising an oxidatively less reactive shell
- 专利标题（中）： 用于光热照相系统的核/壳银供体，其包含氧化反应性较小的壳
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申请号： US09991051申请日： 2001-11-21
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公开(公告)号： US06548236B1公开(公告)日： 2003-04-15
- 发明人: Mark E. Irving , David H. Levy , JoAnn D. Hanna , Stephen Swingley , Donald L. Black , Stephen C. Stoker
- 申请人： Mark E. Irving , David H. Levy , JoAnn D. Hanna , Stephen Swingley , Donald L. Black , Stephen C. Stoker
- 主分类号： G03C1498
- IPC分类号： G03C1498
摘要：
The present invention is directed to a photothermographic element comprising silver halide, a blocked developer, a coupler, and core/shell particles, each such particle comprising a mixture of at least two non-photosensitive organic silver salts, which particle comprises a center portion comprising a non-photosensitive first organic silver salt and at least one shell portion covering the center portion, the shell comprising a non-photosensitive second organic silver salt. The organic silver salt in the shell has a higher pKsp relative to the organic silver salt in the core. This invention also provides a composition comprising core/shell non-photosensitive organic silver salt particles, and a method of making the particles.
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