Non-uniform iodide high chloride {100} tabular grain emulsion
    7.
    发明授权
    Non-uniform iodide high chloride {100} tabular grain emulsion 失效
    非均匀碘化物高氯化物{100}片状颗粒乳剂

    公开(公告)号:US5906913A

    公开(公告)日:1999-05-25

    申请号:US955277

    申请日:1997-10-21

    IPC分类号: G03C1/035 G03C1/005

    摘要: A high chloride {100} tabular grain emulsion is disclosed containing a non-uniform distribution of iodide to increase sensitivity. A high percentage of the {100} tabular grains have one or more crystal lattice dislocations lines at sites of maximum iodide concentration. The dislocation lines are distinctive in that they are oriented parallel to at least one edge of the {100} tabular grains. The mechanism for producing the dislocation lines relies upon a relatively slow rate of addition of iodide ion, improving the reproducibility of emulsion properties in manufacture. Relatively low overall levels of iodide are employed, allowing rapid rates of development.

    摘要翻译: 公开了含有不均匀分布的碘化物以提高灵敏度的高氯化物{100}片状颗粒乳剂。 {100}片状颗粒的高百分比在最大碘化物浓度的位置具有一个或多个晶格位错线。 位错线是独特的,因为它们取向平行于{100}片状晶粒的至少一个边缘。 产生位错线的机理依赖于碘离子相对较慢的添加速率,提高了制造中乳液性能的再现性。 使用相对较低的碘化物总体水平,允许快速发展。

    High-speed direct-positive photographic elements utilizing core-shell
emulsions
    8.
    发明授权
    High-speed direct-positive photographic elements utilizing core-shell emulsions 失效
    使用核 - 壳乳液的高速直接摄影元件

    公开(公告)号:US5532119A

    公开(公告)日:1996-07-02

    申请号:US37066

    申请日:1993-03-25

    CPC分类号: G03C1/48576 G03C1/07 G03C1/09

    摘要: Direct-positive photographic elements are comprised of a support and a silver halide emulsion layer containing core-shell silver halide grains comprising a chemically sensitized core and a chemically sensitized shell, wherein at least one of the core and the shell comprises a band of dopant and wherein the dopant is hexacyano ruthenium (II). Preferably, the shell of the core-shell grains is chemically sensitized with both a gold-containing chemical sensitizing agent and a sulfur-containing chemical sensitizing agent and the weight ratio of the gold-containing chemical sensitizing agent to the sulfur-containing chemical sensitizing agent is at least about two to one.

    摘要翻译: 直接正性照相元件由支持体和含有核 - 壳卤化银颗粒的卤化银乳剂层组成,所述核 - 壳卤化银颗粒包含化学增感的核心和化学增感的壳体,其中核心和壳体中的至少一个包含掺杂剂带, 其中掺杂剂是六氰基钌(II)。 优选地,核 - 壳颗粒的壳体通过含金化学增感剂和含硫化学增感剂和含金化学增感剂与含硫化学增感剂的重量比进行化学增感 至少是两到一个。