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    • 1. 发明授权
    • Silver halide photosensitive material and method for forming image
    • 卤化银感光材料及形成图像的方法
    • US6066440A
    • 2000-05-23
    • US35205
    • 1998-03-05
    • Yasushi ArakiYoichi HosoyaMitsuo Saitou
    • Yasushi ArakiYoichi HosoyaMitsuo Saitou
    • G03C7/392G03C1/005G03C1/035G03C1/047G03C1/42G03C7/407G03C8/40G03C7/00G03C5/40
    • G03C1/047G03C8/404G03C1/0051
    • Disclosed is a silver halide photosensitive material comprising a support and a photosensitive layer formed thereon. The photosensitive layer comprises at least a photosensitive silver halide emulsion, a developing agent, a compound which forms a dye by a coupling reaction with an oxidized form of the developing agent, and a binder. The silver halide photosensitive material after the exposure thereof is put together with a processing material, which comprises a processing layer containing at least a base and/or a base precursor, in the presence of water supplied between the layer of the silver halide photosensitive material and the layer of the processing material in an amount ranging from 1/10 to the equivalent of an amount which is required for the maximum swelling of the total of the layers of these materials excluding back layers thereof, and these materials are heated to form a color image in the silver halide photosensitive material, in which the photosensitive layer comprises gelatin which is modified so that the interaction thereof with silver is reduced, and a silver halide emulsion in which tabular silver halide grains, each having an aspect ratio of 2 or more, account for 50% or more of the total projected area of the silver halide grains of the emulsion. Also disclosed is a method for forming an image by using this silver halide photosensitive material.
    • 公开了一种卤化银感光材料,其包含支撑体和形成在其上的感光层。 感光层至少包含感光卤化银乳剂,显影剂,通过与显影剂的氧化形式的偶联反应形成染料的化合物和粘合剂。 将其曝光后的卤化银感光材料与处理材料放在一起,处理材料包含至少含有碱和/或碱前体的处理层,所述处理层在卤化银感光材料层和 处理材料层的范围为+ E,fra 1/10 + EE,相当于除了这些材料之外的这些材料的总层的最大溶胀所需的量,这些材料 被加热以在卤化银感光材料中形成彩色图像,其中感光层包含改性的明胶,使得其与银的相互作用降低;以及卤化银乳剂,其中每个具有方面的片状卤化银颗粒 2以上的比率占乳液的卤化银颗粒总投影面积的50%以上。 还公开了通过使用该卤化银感光材料形成图像的方法。
    • 2. 发明授权
    • Method for producing silver halide grain and silver halide emulsion
using the grain
    • 使用该颗粒生产卤化银颗粒和卤化银乳剂的方法
    • US5587281A
    • 1996-12-24
    • US501959
    • 1995-07-13
    • Mitsuo SaitouJunichi YamanouchiYoichi Hosoya
    • Mitsuo SaitouJunichi YamanouchiYoichi Hosoya
    • G03C1/005G03C1/043G03C1/07G03C1/047G03C1/035
    • G03C1/07G03C1/0051G03C1/043
    • Disclosed is a method for producing silver halide grains containing tabular grains having a thickness of from 0.02 to 0.3 .mu.m and an aspect ratio (diameter/thickness) of from 2 to 50 at a proportion of from 75 to 100% of the total projected area of silver halide grains, which comprises at least nucleation, ripening and growing steps in a dispersion medium solution consisting of water and a dispersion medium, wherein gelatin having the following characteristics (a) occupies from 30 to 100 wt % of said dispersion medium used in said growing step:characteristics (a)the relation between the number percentage of a chemically modified --NH.sub.2 group in the gelatin and the methionine content of the gelatin is in the region a.sub.1 depicted in FIG. 1.Also disclosed is a silver halide emulsion comprising at least a dispersion medium and silver halide grains produced by the above-described method.
    • 公开了一种制备厚度为0.02〜0.3μm,长宽比(直径/厚度)为2〜50的含有片状颗粒的卤化银颗粒的比例为总投影面积的75〜100%的方法 的卤化银颗粒,其在由水和分散介质组成的分散介质溶液中至少包含成核,成熟和生长步骤,其中具有以下特征的明胶(a)占所用分散介质的30-100重量% 所述生长步骤:特征(a)明胶中的化学修饰的-NH 2基团的数目百分比与明胶的甲硫氨酸含量之间的关系在图1所示的区域a1中。 还公开了包含至少一种分散介质和通过上述方法制备的卤化银颗粒的卤化银乳剂。