Method for chemically sensitizing silver halide photographic emulsion
    3.
    发明授权
    Method for chemically sensitizing silver halide photographic emulsion 失效
    化学增感卤化银照相乳剂的方法

    公开(公告)号:US5679507A

    公开(公告)日:1997-10-21

    申请号:US519695

    申请日:1995-08-25

    摘要: A method for chemically sensitizing a silver halide photographic emulsion with a selenium compound is disclosed. The sensitizing method comprises the steps of preparing a dispersion of solid particles of a selenium compound in an aqueous medium by a process comprising the following steps of (1) dissolving a substantially water-insoluble organic selenium compound in a substantially water immiscible low-boiling organic solvent to prepare a selenium compound solution, (2) dispersing the selenium compound solution in water or an aqueous solution of a dispersing aid to form a oil-in-water type dispersion, and (3) removing the organic solvent from the oil-in-water type dispersion by stirring the dispersion under a decompressed condition to precipitate the selenium compound so as to form a dispersion of fine solid particles of the selenium compound having an average particle size of 10 nm to 3 .mu.m;adding the solid dispersion particles of the selenium compound to a silver halide emulsion, and ripening the silver halide emulsion in the presence of the solid dispersion particles of the selenium compound.

    摘要翻译: 公开了一种用硒化合物对卤化银照相乳剂进行化学敏化的方法。 敏化方法包括以下步骤:通过以下步骤制备硒化合物的固体颗粒在水性介质中的分散步骤:(1)将基本上不溶于水的有机硒化合物溶解在基本上与水不混溶的低沸点有机物 溶剂以制备硒化合物溶液,(2)将硒化合物溶液分散在水或分散助剂的水溶液中以形成水包油型分散体,和(3)从油中除去有机溶剂 - 水型分散体,在减压条件下搅拌分散体,使硒化合物沉淀,形成平均粒径为10nm〜3μm的硒化合物的微细固体颗粒的分散液; 将硒化合物的固体分散体颗粒加入到卤化银乳剂中,并在硒化合物的固体分散体颗粒存在下熟化卤化银乳剂。

    Stimulable phosphor, preparation method thereof and radiation image conversion panel
    10.
    发明授权
    Stimulable phosphor, preparation method thereof and radiation image conversion panel 失效
    稳定荧光粉,其制备方法和辐射图像转换面板

    公开(公告)号:US06168730A

    公开(公告)日:2001-01-02

    申请号:US09291459

    申请日:1999-04-14

    IPC分类号: C09K1161

    CPC分类号: C09K11/7703 C09K11/7705

    摘要: A preparation method of an oxygen-introduced stimulable phosphor including a rare earth activated alkaline earth metal fluorohalide stimulable phosphor is disclosed, comprising the steps of heating a precursor of a stimulable phosphor in an atmosphere containing oxygen, and further heating the heated precursor in a weakly reducing atmosphere. Stimulable phosphors prepared by this method and a radiation image conversion panel by use thereof are also disclosed.

    摘要翻译: 公开了包含稀土活化的碱土金属氟卤化物可激发荧光体的引入氧的荧光体的制备方法,其包括在含氧的气氛中加热可刺激的荧光体的前体,并进一步加热弱的前体 减少气氛。 还公开了通过该方法制备的稳定的荧光体和其使用的辐射图像转换面板。