Photographic high contrast silver halide material and method of processing
    1.
    发明授权
    Photographic high contrast silver halide material and method of processing 有权
    摄影高对比度卤化银材料及其加工方法

    公开(公告)号:US06187520B1

    公开(公告)日:2001-02-13

    申请号:US09335589

    申请日:1999-06-18

    IPC分类号: G03C529

    摘要: A high contrast photographic material free from nucleating agents comprising a support bearing a silver halide emulsion layer comprising silver halide grains and a hydrophilic colloid having a silver:hydrophilic colloid ratio above 1.9, and containing a density enhancing amine compound in the emulsion layer or an adjacent hydrophilic colloid layer wherein at least 60% of the silver halide grains are spectrally sensitized. A photographic image can be formed from the imagewise exposed material by a method comprising developing the exposed material for a time no longer than 25 seconds at a temperature no greater than 35° C.

    摘要翻译: 不含成核剂的高对比度感光材料,其包含载体,该载体含有卤化银颗粒的卤化银乳剂层和银:亲水胶体比高于1.9的亲水胶体,并且在乳液层或邻近的层中含有密度增强胺化合物 亲水胶体层,其中至少60%的卤化银颗粒是光谱增感的。 可以通过包括在不高于35℃的温度下将暴露的材料显影不超过25秒的方法从成像曝光材料形成照相图像。

    Photographic elements with tetra-nuclear merocyanine sensitizers
    2.
    发明授权
    Photographic elements with tetra-nuclear merocyanine sensitizers 失效
    摄影元素与四核花菁敏化剂

    公开(公告)号:US5563021A

    公开(公告)日:1996-10-08

    申请号:US479581

    申请日:1995-06-07

    CPC分类号: G03C1/26 A01M31/002 G03C1/061

    摘要: A photographic element comprising a light sensitive silver halide emulsion sensitized with a dye of formula (I) and a nucleating agent or amine booster associated with the silver halide emulsion: ##STR1## wherein: R.sub.3 is an alkyl group, alkenyl group, or aryl groupR.sub.4 and R.sub.5 are each hydrogen, an alkyl group, alkenyl or aryl group;R.sub.6, R.sub.7 and R.sub.8 are, independently, an alkyl group, alkenyl group, aryl group, or H;the dye has at least three acid or acid salt substituents; andeach L independently represents a methine group;p is 0 or 1;Z.sub.1 represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring group;(X).sub.n represents counterions as needed to balance the charge on the molecule.The present invention also provides a process for forming a high contrast photographic image on a photographic element having a light sensitive silver halide emulsion sensitized with a dye of formula (I). The process comprises developing such a photographic element in the presence of a hydrazine compound and an amine booster.

    摘要翻译: 包含用式(I)的染料敏化的感光卤化银乳剂和与卤化银乳剂相关的成核剂或胺促进剂的照相元件:其中:R 3是烷基,烯基, 或芳基R 4和R 5各自为氢,烷基,烯基或芳基; R6,R7和R8独立地为烷基,烯基,芳基或H; 该染料具有至少三个酸或酸盐取代基; 并且每个L独立地表示次甲基; p为0或1; Z1表示完成5-或6-元杂环基团所必需的原子; (X)n表示在分子上平衡电荷所需的抗衡离子。 本发明还提供了在具有用式(I)的染料敏化的感光卤化银乳剂的照相材料上形成高对比度摄影图像的方法。 该方法包括在肼化合物和胺助剂的存在下开发这种照相元件。

    Photographic high contrast silver halide materials
    3.
    发明授权
    Photographic high contrast silver halide materials 失效
    摄影高对比度卤化银材料

    公开(公告)号:US5342732A

    公开(公告)日:1994-08-30

    申请号:US941083

    申请日:1992-10-13

    CPC分类号: G03C1/22 C09B23/105 G03C1/061

    摘要: A photosensitive photographic silver halide material comprising a support bearing a layer of a silver halide emulsion comprising at least 50% silver chloride which contains in or adjacent the emulsion layer a hydrazide nucleating agent and an amine booster, the combination of which is capable of providing high contrast images, which emulsion is sensitised with a dye of the general formula: ##STR1## wherein each of R.sup.1 and R.sup.2 are individually hydrogen, or halogen atom or an alkyl group of 1-4 carbon atoms, a sulfoalkyl, a trifluoromethyl, or cyano group, R.sup.3 is an alkyl or substituted alkyl group, R.sup.4 is a sulfoalkyl group, and R.sup.5 and R.sup.6 are individually an alkyl or substituted alkyl group, andwherein there is the necessary counter-ion.

    摘要翻译: PCT No.PCT / EP92 / 00335 Sec。 371日期:1992年10月13日 102(e)日期1992年10月13日PCT提交1992年2月18日PCT公布。 出版物WO92 / 15042 日本9月3日,1992.一种光敏照相卤化银材料,其包含支承一层卤化银乳剂的载体,该层包含至少50%氯化银,其在乳液层中或邻近乳化层中含有酰肼成核剂和胺助剂,该组合 其能够提供高对比度图像,该乳液用以下通式的染料敏化:烯丙基氢或卤素原子或1-4个碳原子的烷基,磺基烷基,三氟甲基或氰基,R3 是烷基或取代的烷基,R4是磺基烷基,R5和R6分别是烷基或取代的烷基,并且其中有必要的抗衡离子。