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    • 9. 发明申请
    • PREPARATION OF HIGH BROMIDE CUBICAL GRAIN EMULSION
    • 高溴化物颗粒乳液的制备
    • WO2005098536A1
    • 2005-10-20
    • PCT/US2005/011135
    • 2005-03-31
    • EASTMAN KODAK COMPANYHASBERG, Dirk, Jason
    • HASBERG, Dirk, Jason
    • G03C1/015
    • G03C1/015G03C1/035G03C2001/03511G03C2001/03535G03C2001/03541G03C2001/0357G03C2001/03594
    • Preparation of silver halide emulsion comprised of high bromide cubical silver halide grains, comprising: (a) providing in a stirred reaction vessel a dispersing medium and high bromide silver halide grain cores, the cores comprising at least 5 mole % of the final emulsion silver and the contents of the vessel being maintained at a temperature of at least 65°C, and (b) precipitating a high bromide silver halide shell which comprises at least 5 mole % of the final emulsion silver onto the cores by introducing at least a silver salt solution into the dispersing medium at a specified high rate, wherein a minor percentage of chloride ions, relative to bromide, is introduced into the vessel prior to or concurrent with precipitation of the high bromide shell, and wherein the concentration of silver halide in the vessel at the end of the precipitation of the shell is at least 0.5 mole/L.
    • 包括:(a)在搅拌的反应容器中提供分散介质和高溴化物卤化银颗粒核心,所述核心包含至少5摩尔%的最终乳液银和 将容器的内容物保持在至少65℃的温度,和(b)通过引入至少一种银盐将含有至少5摩尔%的最终乳液银的高溴化物卤化银壳沉淀到芯上 溶液以特定的高速率进入分散介质,其中相对于溴化物的少量氯离子在高溴酸盐壳沉淀之前或同时被引入容器中,并且其中卤化银在容器中的浓度 在壳的沉淀结束时为至少0.5mol / L。