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    A photosensitive silver halide element with increased photosensitivity
    2.
    发明授权
    A photosensitive silver halide element with increased photosensitivity 有权
    光敏感的卤化银具有改善的光敏感度

    公开(公告)号：EP0922994B1

    公开(公告)日：2009-08-19

    申请号：EP98204077.6

    申请日：1998-11-30

    申请人： CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS)

    发明人： De Keyzer, René ,  Treguer, Mona ,  Belloni-Cofler, Jaqueline ,  Hynd, Remita

    IPC分类号： G03C1/035

    CPC分类号： G03C1/08 ,  G03C1/005 ,  G03C1/015 ,  G03C1/035 ,  G03C1/09 ,  G03C1/498 ,  G03C1/52 ,  G03C1/66 ,  G03C2001/0156 ,  G03C2001/03511 ,  G03C2001/03535 ,  G03C2001/03594 ,  G03C2200/44

    摘要： A photosensitive element comprising a silver halide emulsion having silver halide grains containing an organic hole-trapping dopant. In a preferred embodiment said dopant is represented by formula (I): €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒR-COOM€ƒ€ƒ€ƒ€ƒ€ƒ(I) wherein R is hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aralkyl group or hetero-aryl group, and M is hydrogen or any metal or organic group which can form a salt or by formula (II): wherein : X and Y are independently selected from O, S, Se, m is 1 and n is 1 or 2, R1 and R2 are hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl or aralkyl group or a substituted or unsubstituted heteroaryl group, wherein R1 and R2 may be the same or different and may form a ring, E represents a group linked to the carbon atom by a heteroatom, having at least one free electron pair, M+ is a proton or an organic or inorganic (metal) counterion. Moreover the invention provides a photosensitive element where said photosensitive element can be a photoadressable thermographic element. The invention also provides a method for preparing said photosensitive element comprising a support and on one or both sides thereof at least one silver halide emulsion layer wherein the silver halide grains are doped with an organic hole-trapping dopant according to formula (I) or (II), optionally carried out in the presence of a oxidizing agent.

    Process for the preparation of concentrated dye-water compositions
    7.
    发明公开
    Process for the preparation of concentrated dye-water compositions 审中-公开
    维尔法赫伦·赫尔斯特隆·冯·孔森特里滕·法布斯托夫/瓦西·祖萨森采宗

    公开(公告)号：EP1335002A1

    公开(公告)日：2003-08-13

    申请号：EP03075135.8

    申请日：2003-01-16

    申请人： EASTMAN KODAK COMPANY

    发明人： Novak, James Edward, c/o Eastman Kodak Company ,  Baugher, Jeffrey Scott, c/o Eastman Kodak Company ,  Hasberg, Dirk J., c/o Eastman Kodak Company ,  Lobo, Lloyd Anthony, c/o Eastman Kodak Company

    IPC分类号： C09B67/00 ,  G03C1/005 ,  G03C1/12

    CPC分类号： G03C1/005 ,  C09B67/0073 ,  C09B67/0084 ,  G03C1/12

    摘要： A process for preparing a concentrated photographic spectral sensitizing dye-water composition which comprises adding an anionic sensitizing dye to an aqueous medium in the substantial absence of organic solvent, and agitating the combined dye and aqueous medium, wherein the anionic dye forms a liquid-crystalline dye phase in the aqueous medium and the agitation is performed in the presence of a nonionic surfactant having an HLB of less than 12 and an aqueous solubility at 25°C of greater than 10 ppm, which nonionic surfactant is in the aqueous medium at a level of from 10 to 1000 ppm. In a specific embodiment of the invention, where the viscosity (at 0.1 s -1 shear rate) of the dye-water composition in the absence of the nonionic surfactant would be greater than 100 cp and especially where such viscosity would be greater than 500 cp, the surfactant is preferably present at a level sufficient to substantially reduce air entrainment during agitation of the dye-water composition.

    摘要翻译： 一种制备浓缩的照相光谱增感染料 - 水组合物的方法，其包括在基本上不存在有机溶剂的情况下向阴离子增感染料添加阴离子敏化染料，并搅拌组合的染料和水性介质，其中阴离子染料形成液晶 在水性介质中的染料相和在HLB小于12的非离子表面活性剂和25℃下的水溶性大于10ppm的情况下进行搅拌，该非离子表面活性剂在水介质中的水平 为10〜1000ppm。 在本发明的一个具体实施方案中，当不存在非离子表面活性剂时，染料 - 水组合物的粘度（0.1s -1剪切速率）将大于100cp，特别是在这种粘度将大于 500cp，表面活性剂优选以足以在搅拌染料 - 水组合物期间基本上减少空气夹带的水平存在。

    Method for preparing a silver halide photographic emulsion
    8.
    发明公开
    Method for preparing a silver halide photographic emulsion 审中-公开
    Verfahren zur Herstellung einer photoischen Silberhalogenidemulsion

    公开(公告)号：EP1245999A1

    公开(公告)日：2002-10-02

    申请号：EP02356040.2

    申请日：2002-02-28

    申请人： EASTMAN KODAK COMPANY

    发明人： Guilment, Jean, Kodak Industrie ,  Poncelet, Olivier Jean Christian, Kodak Industrie

    IPC分类号： G03C1/005 ,  G03C11/24

    CPC分类号： G03C11/24 ,  G03C1/005 ,  G03C1/38

    摘要： The present invention relates to a method for preparing a silver halide photographic emulsion. The process according to the invention comprises the following steps:

    a) The preparation of a nucleation medium comprising an aqueous composition based on a hydrophilic colloid and a non-ionic antifoaming agent.
    b) Nucleation, in which silver halide nuclei are precipitated.
    c) Growth of the silver halide nuclei to form a silver halide photographic emulsion.
    d) The reaction of the emulsion resulting from step c) with a material that bears lipophilic functions on its surface.

    The method overcomes problems met when using antifoaming agents in preparing a silver halide photographic emulsion.

    摘要翻译： 本发明涉及一种制备卤化银照相乳剂的方法。 根据本发明的方法包括以下步骤：a）制备包含基于亲水胶体和非离子型消泡剂的水性组合物的成核培养基。 b）成核，其中卤化银核沉淀。 c）卤化银核生长形成卤化银照相乳剂。 d）由步骤c）得到的乳液与其表面具有亲脂性的物质的反应。 该方法克服了当使用消泡剂制备卤化银照相乳剂时遇到的问题。