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    Process for the preparation of a hybrid direct positive emulsion and photographic material containing such an emulsion
    2.
    发明授权
    Process for the preparation of a hybrid direct positive emulsion and photographic material containing such an emulsion 失效
    用于制备混合直接阳性乳液和含有这种乳液的照相材料的方法

    公开(公告)号：US5498517A

    公开(公告)日：1996-03-12

    申请号：US315449

    申请日：1994-09-30

    申请人： Ann Verbeeck ,  Kris Viaene

    发明人： Ann Verbeeck ,  Kris Viaene

    IPC分类号： G03C1/015 ,  G03C1/035 ,  G03C1/07 ,  G03C1/22 ,  G03C1/485 ,  G03C1/005

    CPC分类号： G03C1/48515 ,  G03C1/035 ,  G03C1/22

    摘要： A process is disclosed for the preparation of a hybrid direct positive silver halide emulsion comprising the steps of (1) forming an essentially cubic host grain emulsion consisting of silver bromide or silver iodobromide, with a iodide content between 0 and 10 mole %, by a balanced double jet, (2) depositing epitaxially on the corners of said formed essentially cubic host grains a silver iodide crystallographic phase wherein said silver iodide phase contains at most 5 % of the total crystal silver halide, either by precipitating a silver chloride epitaxial phase and converting it to silver iodide, or by adding silver ions and an organic iodide releaser.The organic iodide releaser is preferably mono-iodoacetic acid.

    摘要翻译： 公开了一种用于制备混合直接正卤化银乳剂的方法，包括以下步骤：（1）通过以下步骤形成由碘化银含量为0至10摩尔％的溴化银或碘溴化银组成的基本上立方体的主体颗粒乳剂 （2）在所形成的基本上立方的主体颗粒的角上外延沉积碘化银结晶相，其中所述碘化银相含有总结晶卤化银的至多5％，通过沉淀氯化银外延相和 将其转化为碘化银，或加入银离子和有机碘化物释放剂。 有机碘化物释放剂优选为单碘代乙酸。

    Direct positive films
    3.
    发明授权
    Direct positive films 失效
    直接正片

    公开(公告)号：US4971899A

    公开(公告)日：1990-11-20

    申请号：US347761

    申请日：1989-05-05

    申请人： Steven R. Gallo ,  John Abbruzzese ,  Adelberto Aguero

    发明人： Steven R. Gallo ,  John Abbruzzese ,  Adelberto Aguero

    IPC分类号： G03C1/06 ,  G03C1/485

    CPC分类号： G03C1/48515

    摘要： Direct positive photographic films are disclosed having novel density enhancers of the formula ##STR1## wherein A is oxygen or sulfur, and B is selected from the group consisting of hydrogen, alkyl haloalkyl, hydroxyalkyl, alkylamino and alkoxy. Photographic materials coated with emulsions having these density enhancers display good optical density while maintaining high speed capability.

    摘要翻译： 公开了直接正性照相胶片，其具有新颖的式（I）的密度增强剂，其中A是氧或硫，B选自氢，烷基卤代烷基，羟基烷基，烷基氨基和烷氧基。 用具有这些密度增强剂的乳液涂覆的照相材料显示良好的光学密度，同时保持高速性能。

    Process for developing a direct reversal silver halide photographic light-sensitive material
    6.
    发明授权
    Process for developing a direct reversal silver halide photographic light-sensitive material 失效
    用于开发直接反转卤化银照相感光材料的方法

    公开(公告)号：US3970459A

    公开(公告)日：1976-07-20

    申请号：US504775

    申请日：1974-09-10

    申请人： Tadaaki Tani

    发明人： Tadaaki Tani

    IPC分类号： G03C1/485 ,  G03C5/50 ,  G03C5/24

    CPC分类号： G03C1/48515 ,  G03C5/50

    摘要： A process for developing a light-sensitive material which comprises processing a direct reversal silver halide photographic light-sensitive material comprising a support having thereon a silver halide photographic emulsion comprising1. cubic silver halide grains having fogging nuclei therein provided by adding a strong reducing agent to the emulsion and ripening the emulsion, and2.A. a compound acting as an electron acceptor being capable of receiving photoelectrons and also acting as a development accelerator bearing atoms capable of being positively charged in a developer orB. a compound as an electron acceptor capable of receiving photoelectrons and a compound as a development accelerator bearing atoms capable of being positively charged in a developer in an aqueous solution of a hydrophilic colloid with a developer containing a developing agent bearing atoms capable of being negatively charged in the developer is disclosed.

    摘要翻译： 一种用于开发感光材料的方法，其包括处理直接反转卤化银照相感光材料，其包含其上具有卤化银照相乳剂的载体，所述载体包含1.具有通过添加强力还原剂而提供的含有氢原子的CUBIC银卤化物颗粒 对乳液和乳化乳液，和2。

    Direct-positive silver halide emulsion fogged with a cyanoborohydride anion
    7.
    发明授权
    Direct-positive silver halide emulsion fogged with a cyanoborohydride anion 失效
    直接卤化银乳剂用氰基硼氢化物阴离子雾化

    公开(公告)号：US3951656A

    公开(公告)日：1976-04-20

    申请号：US486196

    申请日：1974-07-05

    申请人： Frederick William Millard

    发明人： Frederick William Millard

    IPC分类号： G03C1/485 ,  G03C1/28

    CPC分类号： G03C1/48515

    摘要： A method for chemically fogging a silver halide photographic emulsion comprising reacting cyanoborohydride anion with the silver halide thereby forming metallic silver. The cyanoborohydride is preferably in the form of an alkali metal salt. Additionally, the emulsion may optionally include a gold salt.

    摘要翻译： 一种用于化学雾化卤化银照相乳剂的方法，包括使氰基硼氢化物阴离子与卤化银反应从而形成金属银。 氰基硼氢化物优选为碱金属盐的形式。 另外，乳液可以任选地包括金盐。

    Direct positive color photographic materials
    9.
    发明授权
    Direct positive color photographic materials 失效
    直接的彩色摄影材料

    公开(公告)号：US3790388A

    公开(公告)日：1974-02-05

    申请号：US3790388D

    申请日：1972-09-13

    申请人： FUJI PHOTO FILM CO LTD

    发明人： SHIBA K ,  KUBODERA S ,  SANO K ,  OKUMURA A

    IPC分类号： G03C7/00 ,  C07D231/52 ,  G03C1/485 ,  G03C7/384 ,  G03C1/40

    CPC分类号： G03C1/48515 ,  C07D231/52 ,  G03C7/384 ,  Y10S430/156

    摘要： A direct positive color photographic material having a silver halide photographic emulsion layer containing chemically fogged silver halide grains, said silver halide emulsion layer containing a magenta color coupler precursor having a pyrazole nucleus substituted by an acyloxy group at the five-position. The direct positive color photographic material containing such a magenta color coupler precursor has a high sensitivity, shows good clearness in the highlight portions, and has improved stability.

    摘要翻译： 具有含有化学雾化卤化银颗粒的卤化银照相乳剂层的直接正色彩色照相材料，所述卤化银乳剂层含有具有在五位被酰氧基取代的吡唑核的品红色成色剂前体。 含有这种品红色成色剂前体的直接正色彩色照相材料具有高灵敏度，在高亮部分显示出良好的透明度，并且具有改善的稳定性。

    Surface development of an imagewise exposed emulsion containing silver halide grains with cores chemically ripened in two stages
    10.
    发明授权
    Surface development of an imagewise exposed emulsion containing silver halide grains with cores chemically ripened in two stages 失效
    包含银盐的肉眼暴露的乳液的表面发育与两个阶段的化学反应

    公开(公告)号：US3709689A

    公开(公告)日：1973-01-09

    申请号：US3709689D

    申请日：1970-04-02

    申请人： AGFA GEVAERT

    发明人： FLORENS R ,  CLAES F ,  MOISAR F

    IPC分类号： G03C5/00 ,  G03C1/015 ,  G03C1/04 ,  G03C1/485 ,  G03C5/24 ,  G03C5/30

    CPC分类号： G03C1/48515 ,  G03C1/015 ,  G03C1/04 ,  G03C2001/03511 ,  G03C2001/03535

    摘要： Light-sensitive silver halide emulsion adapted for producing either negative or direct positive photographic images and containing composite grains of silver bromide having internal core portions of chemically ripened silver bromide and external shell portions surrounding such core portions of chemically fogged silver bromide, such emulsion on development with a surface developing agent having a characteristic curve which exhibits a knee portion connecting a generally rectilinear portion of positive gradient and a generally rectilinear portion of negative gradient and is preferably of generally symmetrical configuration. By adjustment of the magnitude of the exposure of the emulsion to light either a direct positive or a negative photographic reproduction is obtained.

    摘要翻译： 感光卤化银乳剂，适用于产生阴性或直接阳性照相图像，并含有溴化银复合颗粒，其中含有化学成熟溴化银的内核部分和包围化学雾化溴化银的核心部分的外壳部分， 表面显影剂具有特征曲线，该特性曲线表现出连接正梯度的大致直线部分的拐点部分和负梯度的大致直线部分，并且优选地具有大致对称的构造。 通过调节乳剂的曝光量，可获得直接的正或负的照相再现。