High bromide cubic grain emulsions
    2.
    发明授权
    High bromide cubic grain emulsions 失效
    高溴化物立方颗粒乳剂

    公开(公告)号:US06727055B1

    公开(公告)日:2004-04-27

    申请号:US10299475

    申请日:2002-11-19

    IPC分类号: G03C1005

    摘要: A radiation-sensitive emulsion is disclosed comprised of cubic silver iodochlorobromide grains comprising 0.25 to about 1.5 mol % iodide, 1 to about 25 mol % chloride, and from about 73.5 to 98.75 mol % bromide, each based on total silver in the emulsion, wherein the grains have an average equivalent circular diameter of greater than 0.6 micrometers and contain from 10−7 to 10−3 mole per silver mole of a metal ion coordination complex dopant of Formula (I) in an internal region of the grains formed after 10 percent and before 95 percent of the total grain silver has been precipitated: [ML6]n  (I) wherein n is zero, −1, −2, −3 or −4, M is a filled frontier orbital polyvalent metal ion, other than iridium, and L6 represents bridging ligands which can be independently selected, provided that at least four of the ligands are anionic ligands, and at least one of the ligands is a cyano ligand or a ligand more electronegative than a cyano ligand. Doping of relatively large grain silver iodochlorobromide cubic grain emulsions in accordance with the invention provides optimized speed, contrast and low intensity efficiency.

    摘要翻译: 公开了一种辐射敏感性乳剂,其包含基于乳液中总银的0.25-约1.5mol%碘化物,1至约25mol%氯化物和约73.5-98.75mol%溴化物的立方氯碘氯溴化物颗粒,其中 晶粒的平均当量圆直径大于0.6微米,并且在每个银摩尔的式(I)的金属离子配位络合物掺杂剂的晶粒的内部区域中含有10 -7至10 -3摩尔 在10%之后形成,并且总颗粒银的95%已经沉淀出来:其中n为0,-1,-2,-3或-4,M为除铱之外的填充的边界轨道多价金属离子,L6 表示可以独立选择的桥连配体,条件是至少四个配体是阴离子配体,并且至少一个配体是氰基配体或比氰基配体更具有负电性的配体。 相对较大的根据本发明的碘代氯溴化钾立方晶粒状乳剂的掺杂提供优化的速度,对比度和低强度效率。

    Photographic elements containing infrared filter dyes
    3.
    发明授权
    Photographic elements containing infrared filter dyes 失效
    含红外线滤光片的摄影元素

    公开(公告)号:US4876181A

    公开(公告)日:1989-10-24

    申请号:US166135

    申请日:1988-03-10

    IPC分类号: C09B23/08 G03C1/83

    CPC分类号: C09B23/086 G03C1/832

    摘要: A dye useful for absorbing infrared radiation in photographic elements, having the structure: ##STR1## is disclosed. In this formula R.sub.1 and R.sub.2 each independently represents sulfoalkyl, carboxyalkyl, or sulfatoalkyl of from 3 to 6 carbon atoms, having at least 3 carbon atoms in the alkyl chain between the nitrogen atom of each Z ring and the sulfo or sulfato group, and at least 2 carbon atoms in the alkyl chain between the nitrogen atom of each Z ring and the carboxy group.R.sub.3 and R.sub.5 are each hydrogen or together represent the atoms necessary to complete 5- or 6-membered carbocyclic ring, and R.sub.4 represents hydrogen, alkyl of 1 to 4 carbon atoms, aryl, cyano, halogen, or ##STR2## where R.sub.6 and R.sub.7 each independently represents alkyl of from 1 to 6 carbon atoms or aryl, or together represent the non-metallic atoms necessary to form a 5- or 6-membered ring.X.sym. represents a cation.Z.sub.1 and Z.sub.2 each independently represent the atoms needed to complete an indole, naphthindole or benzindole nucleus.

    摘要翻译: 公开了一种用于吸收照相元件中的红外辐射的染料,具有以下结构:。 在该式中,R 1和R 2各自独立地表示在每个Z环的氮原子和磺基或硫酸根之间的烷基链中具有至少3个碳原子的3至6个碳原子的磺基烷基,羧烷基或硫酸根烷基, 每个Z环的氮原子和羧基之间的烷基链中的至少2个碳原子。 R 3和R 5各自为氢或一起代表完成5-或6-元碳环所必需的原子,并且R 4表示氢,1-4个碳原子的烷基,芳基,氰基,卤素或者其中R 6和R 7 各自独立地表示1至6个碳原子的烷基或芳基,或一起表示形成5-或6-元环所必需的非金属原子。 X(+)表示阳离子。 Z1和Z2各自独立地表示完成吲哚,萘啶或萘吲哚核所需的原子。

    Radiographic elements that satisfy image and tone requirements with
minimal silver
    6.
    发明授权
    Radiographic elements that satisfy image and tone requirements with minimal silver 失效
    满足图像和色调要求的射线照相元件,最小银

    公开(公告)号:US5800976A

    公开(公告)日:1998-09-01

    申请号:US864421

    申请日:1997-05-28

    摘要: A dual-coated radiographic element is disclosed comprised of a blue tinted film support having coated on each of its faces a spectrally sensitized high bromide tabular grain emulsion. The properties of a maximum density of at least 3.0, an average contrast of at least 2.7, and a b* value more negative than -5.0 at a silver coating coverage on each major surface of the support of less than 12 mg/dm.sup.2, are imparted by (1) the support having a neutral density of at least 0.18, (2) tabular grains accounting for at least 90 percent of total grain projected area having a mean thickness of 0.2 micrometer or less and a coefficient of variation of equivalent circular diameter less than 20 percent, (3) a covering power enhancing compound containing at least one divalent sulfur atom adsorbed to surfaces of the silver halide grains, (4) a water soluble polymer chosen from the class consisting of polyacrylamide and dextran, in a weight ratio of the polymer to the gelatino-vehicle of at least 0.1:1, and (5) hardening of the gelatino-vehicle being chosen to allow a weight gain following processing and before drying of greater than 200 percent, based on the total weight of gelatino-vehicle.

    摘要翻译: 公开了一种双重涂层射线照相元件,其包括在其每个面上涂覆有光谱增感的高溴化物片状颗粒乳剂的蓝色着色膜载体。 赋予至少3.0的最大密度,至少2.7的平均对比度和在载体的每个主表面上的银涂层覆盖率小于-5.0的ab *值的性质小于12mg / dm 2 通过(1)具有至少0.18的中性密度的载体,(2)片状颗粒占总颗粒投影面积的至少90%,平均厚度为0.2微米或更小,并且等效圆直径的变化系数较小 (3)覆盖能量增强化合物,其含有至少一个二价硫原子吸附在卤化银颗粒的表面,(4)选自聚丙烯酰胺和葡聚糖的水溶性聚合物,其重量比为 所述聚合物至明胶载体为至少0.1:1,和(5)明胶载体的硬化被选择为允许加工后的干重之前的重量增加大于200%,基于明胶 - 车辆。

    Blue spectrally sensitized film for radiography, imaging assembly and method
    7.
    发明授权
    Blue spectrally sensitized film for radiography, imaging assembly and method 失效
    蓝光谱增感胶片用于放射成像,成像组装和方法

    公开(公告)号:US06686116B1

    公开(公告)日:2004-02-03

    申请号:US10397435

    申请日:2003-03-26

    IPC分类号: G03C517

    摘要: A blue-sensitive radiographic silver halide film comprises a silver halide emulsion layer comprising predominantly tabular silver halide grains that have an aspect ratio of at least 15, a grain thickness of at least 0.1 &mgr;m, and comprise at least 90 mol % bromide and up to 4 mol % iodide, based on total silver halide. Substantially all of the iodide is present in an internal localized portion of the tabular silver halide grains that excludes the surface of the grains. The tabular silver halide grains are dispersed in a hydrophilic polymeric vehicle mixture comprising at least 0.5% of oxidized gelatin, based on the total dry weight of the polymeric vehicle mixture in the emulsion layer. The tabular silver halide grains are spectrally sensitized using a combination of spectral sensitizing dyes to provide increased speed and reduced dye stain. The dyes have maximum J-aggregate absorptions on the tabular silver halide grains of from about 380 to about 500 nm, wherein the maximum J-aggregate absorption of one spectral sensitizing dye is from about 20 to about 50 nm lower in wavelength than the maximum J-aggregate absorption of the second spectral sensitizing dye.

    摘要翻译: 蓝色感光放射线卤化银膜包括卤化银乳剂层,其主要包含片状卤化银颗粒,其长宽比至少为15,晶粒厚度为至少0.1μm,并且包含至少90mol%的溴化物,直到 4mol%碘化物,基于总卤化银。 基本上所有的碘化物都存在于不排除颗粒表面的片状卤化银颗粒的局部部分内。 片状卤化银颗粒分散在包含至少0.5%氧化明胶的亲水性聚合物载体混合物中,基于乳液层中聚合物载体混合物的总干重。 片状卤化银颗粒使用光谱增感染料的组合进行光谱增感,以提高速度和减少染色剂染色。 这些染料在约380至约500nm的片状卤化银颗粒上具有最大的J-聚集体吸收,其中一种光谱增感染料的最大J-聚集体吸收值比最大J值低约20至约50nm 聚集的第二光谱增感染料的吸收。