Composite silver halide grains and processes for their preparation
    3.
    发明授权
    Composite silver halide grains and processes for their preparation 失效
    复合卤化银颗粒及其制备方法

    公开(公告)号:US5792601A

    公开(公告)日:1998-08-11

    申请号:US681654

    申请日:1996-07-29

    CPC分类号: G03C1/09 G03C1/015 G03C1/035

    摘要: A radiation sensitive emulsion is disclosed containing iridium doped composite silver halide grains comprised of (a) host portions having an average aspect ratio of less than 1.3 and consisting essentially of monodisperse silver iodochloride grains containing from 0.05 to 3 mole percent iodide, based on total silver forming the host portions, with maximum iodide concentrations located nearer the surface of the host portions than their center and (b) epitaxially deposited portions containing the iridium dopant and silver bromide accounting for from 0.1 to 5 mole percent of total silver forming the composite grains. The emulsions are prepared by (a) first providing an emulsion containing grains which form the host portions of the grains and (b) modifying the performance properties of the host grains by a combination of silver bromide addition, iridium dopant incorporation and antifoggant addition, in which, prior to antifoggant addition, silver bromide in the amount of from 0.1 to 5.0 mole percent, based on total silver, is added to the host grain emulsion and deposited onto the host grains in the presence of the iridium dopant to be incorporated. The emulsions of the invention demonstrate generally acceptable photographic characteristics, increased speed, and increases in contrast as exposure intensities are increased.

    摘要翻译: 公开了一种辐射敏感性乳剂,其包含掺杂铱的复合卤化银颗粒,其包含(a)平均长径比小于1.3的主体部分,并且基本上由基于总银的0.05至3摩尔%碘化物的单分散碘化银颗粒组成 形成主体部分,其中最大碘化物浓度位于主体部分的表面比其中心更靠近,(b)含有铱掺杂剂和溴化银的外延沉积部分占形成复合晶粒的总银的0.1-5%。 乳液通过(a)首先提供含有形成颗粒的主体部分的颗粒的乳液和(b)通过溴化银添加,铱掺杂剂掺入和防雾剂添加的组合来改变主体颗粒的性能特性, 在防灰雾添加剂之前,将含有0.1-5.0摩尔%(以总银计)的溴化银加入到主体颗粒乳剂中并在掺入铱掺杂剂的情况下沉积到主体颗粒上。 当暴露强度增加时,本发明的乳液显示出普遍可接受的照相特性,增加的速度和对比度的增加。

    High chloride emulsion having high sensitivity and low fog
    5.
    发明授权
    High chloride emulsion having high sensitivity and low fog 失效
    高氯化物乳液具有高灵敏度和低雾度

    公开(公告)号:US06740482B1

    公开(公告)日:2004-05-25

    申请号:US08362107

    申请日:1994-12-22

    IPC分类号: G03C1005

    CPC分类号: G03C1/035 G03C1/346

    摘要: The invention provides a radiation sensitive emulsion comprised of a dispersing medium and silver iodochloride grains WHEREIN the silver iodochloride grains are partially bounded by {100} crystal faces satisfying the relative orientation and spacing of cubic grains and contain from 0.05 to 1 mole percent iodide, based on total silver, with maximum iodide concentrations located nearer the surface of the grains than their center and wherein said emulsion further comprises a thiosulfonate of Formula I and a sulfinate of Formula II wherein Formula I is Z1SO2SM1  (I) wherein Z1 is alkyl, aryl, heteroaryl, arylalkyl, substituted aryl or a polymeric backbone wherein the thiosulfonate group is repeated and M1 is a monovalent metal or a tetraalkylammonium cation, and Formula II is Z2SO2M2  (II) wherein Z2 is alkyl, aryl, heteroaryl, arylalkyl, substituted aryl or a polymeric backbone wherein the sulfinate group is repeated and M2 is a monovalent metal or a tetraalkylammonium cation.

    摘要翻译: 本发明提供了由分散介质和碘氯化银颗粒组成的辐射敏感乳液.HEERIN银碘银盐颗粒部分地由{100}晶面限定,满足立方晶粒的相对取向和间距,并且含有0.05至1摩尔%的碘化物,基于总银 ,其中最大碘化物浓度位于比其中心更靠近颗粒表面的位置,其中所述乳液还包含式I的硫代磺酸盐和式II的亚磺酸盐,其中在式I中其中Z 1为烷基,芳基,杂芳基,芳烷基,取代的芳基或聚合物主链,其中 重复硫代磺酸盐基团,M 1为一价金属或四烷基铵阳离子,而Ⅱ为其中Z2为烷基,芳基,杂芳基,芳基烷基,取代芳基或聚合物主链,其中重复亚磺酸基,M 2为一价金属或四烷基铵阳离子。

    Cubical grain silver iodochloride emulsions and processes for their
preparation
    6.
    发明授权
    Cubical grain silver iodochloride emulsions and processes for their preparation 失效
    立方颗粒碘化银乳剂及其制备方法

    公开(公告)号:US5736310A

    公开(公告)日:1998-04-07

    申请号:US651193

    申请日:1996-05-17

    CPC分类号: G03C1/015 G03C1/035 G03C1/34

    摘要: Radiation sensitive emulsions are disclosed comprised of silver iodochloride grains having three pairs of equidistantly spaced parallel {100} crystal faces and containing from 0.05 to 3 mole percent iodide, based on total silver, in a controlled, non-uniform iodide distribution forming a core containing at least 50 percent of total silver, a surface shell, and a sub-surface shell that contains a maximum iodide concentration and provides, when the emulsion is exposed to 390 nm electromagnetic radiation at 10.degree. K., stimulated fluorescent emissions in the range of from 450 to 470 nm and at 500, the stimulated fluorescent emission in the range of from 450 to 470 nm having a peak intensity more than twice the stimulated fluorescent emission intensity at 500 nm. The emulsion is prepared by a process wherein a) grains accounting for at least 50 percent of total silver forming the silver iodochloride grains are grown in the dispersing medium, (b) while employing the grains as substrates for further grain growth, locating crystal lattice variances in the grains by the incorporation of iodide to form a first shell having a higher local iodide concentration than any other grain portion, and (c) precipitating silver chloride onto the surface of the grains formed in step (b) to create a surface shell separating the first shell from the surface of the completed grains.

    摘要翻译: 公开的辐射敏感乳剂由具有三对等距间隔的平行{100}晶面的碘氯化银颗粒组成,并以受控的不均匀的碘分布形式含有基于总银的0.05至3摩尔%的碘化物,形成含有 总银的至少50%,表面壳和含有最大碘化物浓度的亚表面壳,当乳液暴露于10°K的390nm电磁辐射时,其刺激的荧光发射范围为 在450nm至470nm和500nm处,在450nm至470nm范围内的受激荧光发射峰强度大于500nm处的受激荧光发射强度的两倍。 通过以下方法制备乳液,其中a)在分散介质中生长构成形成碘氯化银粒子的总银的至少50%的晶粒,(b)当使用晶粒作为进一步晶粒生长的基底时,定位晶格方位 通过引入碘化物形成具有比任何其它颗粒部分更高的局部碘化物浓度的第一壳的晶粒,和(c)将氯化银沉淀到步骤(b)中形成的晶粒的表面上,以形成分离的表面壳 第一个壳从完成的谷物的表面。

    Low staining green spectral sensitizing dyes and silver chloride
emulsions containing iodide
    7.
    发明授权
    Low staining green spectral sensitizing dyes and silver chloride emulsions containing iodide 失效
    低染绿色光谱增感染料和含碘化物的氯化银乳剂

    公开(公告)号:US5674674A

    公开(公告)日:1997-10-07

    申请号:US580732

    申请日:1995-12-27

    CPC分类号: G03C1/035 G03C1/18

    摘要: The invention relates to a photographic element comprising a silver halide emulsion wherein at least one layer contains a silver chloroiodide emulsion containing at least 95 mole percent chloride and contains a sensitizing dye of the following general formula (I): ##STR1## wherein: Z1 represents a halogen, a cyano group, an amide substituted aromatic group, or a heteroaromatic group that is directly appended to the benzene ring shown or an aromatic group that is attached through an amide linking group and Z2 represents a substituted or unsubstituted alkyl group, substituted or unsubstituted alkoxy group, cyano group, a substituted or unsubstituted amide group, a substituted or unsubstituted carbamoyl group, halogen, an amide substituted aromatic group, or a heteroaromatic group that is directly appended to the benzene ring shown or an aromatic group that is attached through an amide linking group and W1 is one or more ions as needed to balance the charge on the molecule and R1 and R2 are, independently, substituted or unsubstituted alkyl group and R3 is H or a substituted or unsubstituted lower alkyl group or a substituted or unsubstituted aryl.

    摘要翻译: 本发明涉及一种包含卤化银乳剂的照相元件,其中至少一层含有含有至少95摩尔%氯化物的氯碘酸银乳剂,并含有下列通式(I)的致敏染料:其中: Z1表示直接附着在所示苯环上的卤素,氰基,酰胺取代的芳基或杂芳基,或通过酰胺连接基团连接的芳基,Z2表示取代或未取代的烷基, 取代或未取代的烷氧基,氰基,取代或未取代的酰胺基,取代或未取代的氨基甲酰基,卤素,酰胺取代的芳族基团或直接附着在所示苯环上的杂芳族基或芳族基团 通过酰胺连接基团连接,W1根据需要平衡分子和R1上的电荷的一种或多种离子 且R 2独立地为取代或未取代的烷基,且R 3为H或取代或未取代的低级烷基或取代或未取代的芳基。