Core/shell silver donors for photothermographic systems comprising an oxidatively more reactive shell
    1.
    发明授权
    Core/shell silver donors for photothermographic systems comprising an oxidatively more reactive shell 失效
    用于光热照相系统的核/壳银供体,其包含氧化性更强的壳

    公开(公告)号:US06576414B1

    公开(公告)日:2003-06-10

    申请号:US09990720

    申请日:2001-11-21

    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 lower pKsp relative to the organic silver salt in the core. This invention also provides a composition comprising the core/shell non-photosensitive organic silver salt particles, and a method of making the particles.

    摘要翻译: 本发明涉及包含卤化银,阻挡显影剂,成色剂和核/壳颗粒的光热敏成像元件,每种这样的颗粒包含至少两种非光敏有机银盐的混合物,该颗粒包含中心部分,该中心部分包​​括 非光敏第一有机银盐和覆盖中心部分的至少一个外壳部分,壳体包含非感光性第二有机银盐。 壳中的有机银盐相对于核心中的有机银盐具有较低的pKsp。 本发明还提供了包含核/壳非光敏有机银盐颗粒的组合物和制备该颗粒的方法。