SILVER HALIDE EMULSION CONTAINING IRIDIUM DOPANT
    2.
    发明申请
    SILVER HALIDE EMULSION CONTAINING IRIDIUM DOPANT 失效
    含有卤化物的银盐乳液

    公开(公告)号:US20050233266A1

    公开(公告)日:2005-10-20

    申请号:US10826708

    申请日:2004-04-16

    Abstract: A silver halide emulsion comprising radiation sensitive silver halide grains exhibiting a face centered cubic crystal lattice structure containing a hexacoordination complex of an iridium ion in which at least half of the coordination sites in the hexacoordination complex are provided by halogen or pseudohalogen ligands, and at least one coordination site is provided by a ligand comprising a azole ring containing a chalcogen atom and a nitrogen atom, wherein the azole ring is substituted at the 5-position with a halide ion. The invention provides emulsions containing with a preferred class of iridium dopants which are especially useful for improving reciprocity performance in silver halide emulsions with minimal or no impact on other aspects of photographic performance. These dopants give a superior balance of reciprocity and other photographic properties compared to other iridium dopants exemplified in the prior art.

    Abstract translation: 一种卤化银乳剂,其包含辐射敏感的卤化银颗粒,其表现出包含铱离子的六配位络合物的面心立方晶格结构,其中六配位络合物中的至少一半配位位点由卤素或拟卤素配体提供,至少 一个配位点由包括含有硫属原子和氮原子的唑环的配体提供,其中吡唑环在5位被卤离子取代。 本发明提供了含有优选类型的铱掺杂剂的乳液,其特别可用于改善对卤化银乳剂的互惠性能,其对照相性能的其它方面影响最小或没有影响。 与现有技术中列举的其他铱掺杂剂相比,这些掺杂剂具有优异的互易平衡和其它照相性能。

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