公开(公告)号：US4996137A

公开(公告)日：1991-02-26

申请号：US541170

申请日：1990-06-21

申请人： Noriyuki Inoue ,  Katsumi Hirano ,  Mitsuo Saitou

发明人： Noriyuki Inoue ,  Katsumi Hirano ,  Mitsuo Saitou

IPC分类号： G03C1/035 ,  G03C1/485

CPC分类号： G03C1/48569

摘要： A method for forming a direct positive image composed of the step of developing with a surface developer an imagewise exposed photosensitive material compose of support having thereon at least one photosensitive emulsion layer containing unprefogged silver halide grains capable of forming an internal latent image; the at least the photosensitive emulsion layer composed of hexagonal tabular silver halide grains in an amount of at least 30 wt %, based on the total silver amount of silver halide grains therein; the hexagonal tabular grains having two parallel hexagonal faces, the ratio of the longest side to the shortest side of the hexagon being at most 2; the aspect ratio of the hexagonal tabular grains being from 2 to 8; and the hexagonal tabular grains having a monodisperse size distribution. The method provides increases in processing speed, maximum density, and contrast in the toe portion, and an improvement in graininess, even when exhausted processing solutions are used.

摘要翻译： 一种用于形成直接正像的方法，包括用表面显影剂显影的步骤，成像曝光的感光材料构成其上具有至少一个包含能够形成内部潜像的未反射的卤化银颗粒的感光乳剂层; 至少含有至少30重量％的六角形片状卤化银颗粒的感光乳剂层，基于其中的卤化银颗粒的总银量; 六边形片状颗粒具有两个平行的六边形面，六边形的最长边与最短边的比例至多为2; 六边形片状颗粒的纵横比为2至8; 和具有单分散尺寸分布的六边形片状颗粒。 该方法即使在使用耗尽的处理溶液时，也提高了脚趾部分的处理速度，最大密度和对比度的增加以及颗粒性的改善。

公开(公告)号：US4504570A

公开(公告)日：1985-03-12

申请号：US564976

申请日：1983-12-23

申请人： Francis J. Evans ,  Richard L. Daubendiek ,  Ronald G. Raleigh

发明人： Francis J. Evans ,  Richard L. Daubendiek ,  Ronald G. Raleigh

IPC分类号： G03C1/485 ,  G03C1/36 ,  G03C5/54

CPC分类号： G03C1/48569 ,  Y10S430/141

摘要： High aspect ratio tabular grain direct reversal silver halide emulsions are disclosed. The emulsions can be incorporated in photographic elements, such as multicolor photographic elements. Image transfer film units incorporating these direct reversal emulsions are specifically disclosed.

摘要翻译： 公开了高纵横比片状晶粒直接反转卤化银乳剂。 乳液可以并入照相元件，如多色照相元件。 具体公开了结合这些直接反转乳液的图像转印膜单元。

公开(公告)号：US20040033451A1

公开(公告)日：2004-02-19

申请号：US08915683

申请日：1997-08-21

发明人： MUNEHISA FUJITA ,  ATSUSHI MATSUNAGA

IPC分类号： G03C001/035 ,  G03C001/09

CPC分类号： G03C8/10 ,  G03C1/0051 ,  G03C1/09 ,  G03C1/10 ,  G03C1/485 ,  G03C1/48569 ,  G03C2001/03535 ,  G03C2001/0357 ,  G03C2001/091 ,  G03C2200/59

摘要： The present invention provides a tabular internal latent image type direct positive photographic silver halide emulsion which provides a high sensitivity and a low re-reversal negative sensitivity and a color diffusion transfer photographic light-sensitive material comprising such an emulsion. The present invention also provides an internal latent image type direct positive photographic silver halide emulsion which can be prepared with a good reproducibility and a color diffusion transfer photographic light-sensitive material less susceptible to variation of sensitivity and S/N ratio comprising such an emulsion. An internal latent image type direct positive photographic silver halide emulsion comprising tabular silver halide grains having an average grain diameter of not less than 0.3 nullm and an aspect ratio (diameter of silver halide grain in circle equivalence/thickness of silver halide grain) of from not less than 2 to not more than 100 in an amount of not less than 50% of all silver halide grains as calculated in terms of area is provided, wherein the average grain thickness a along the main plane of the external shell thereof is from not less than 0.2 nullm to not more than 1.5 nullm and the average grain thickness b perpendicular to the main plane of the external shell thereof is from not less than 0.04 nullm to not more than 0.30 nullm. An internal latent image type direct positive photographic silver halide emulsion is provided, which is prepared from a seed crystal emulsion which has been prepared via desalting process.

摘要翻译： 本发明提供了提供高灵敏度和低反转负反应灵敏度的片状内部潜像型直接正性照相卤化银乳剂和包含这种乳液的彩色扩散转移照相感光材料。 本发明还提供了可以以良好的再现性制备的内部潜像型直接正性照相卤化银乳剂，并且颜色扩散转移照相感光材料不太容易受到包含这种乳液的敏感性和S / N比变化的影响。 包含平均粒径不小于0.3μm的平板状卤化银颗粒和纵横比（卤化银颗粒的直径等于或等于卤化物颗粒的厚度/卤化银颗粒的厚度）的内部潜像型直接正性照相卤化银乳剂 按照面积计算，以不低于所有卤化银颗粒的50％的量少于2至不超过100，其中沿其外壳的主平面的平均颗粒厚度a不小于 0.2μm以上且1.5μm以下，与外壳的主面垂直的平均粒径b为0.04μm以上且0.30μm以下。 提供了一种内部潜像型直接正性照相卤化银乳剂，其由通过脱盐方法制备的晶种乳液制备。

公开(公告)号：USRE32097E

公开(公告)日：1986-03-25

申请号：US627006

申请日：1984-07-02

申请人： Robert A. Silverman ,  Harry A. Hoyen

发明人： Robert A. Silverman ,  Harry A. Hoyen

IPC分类号： G03C1/485

CPC分类号： G03C1/48569

摘要： Blended emulsions for use in forming a direct-positive image are disclosed. The emulsions are comprised of a first, radiation-sensitive core-shell grain population having a relatively low coefficient of variation and a second, substantially smaller size grain population capable of .Iadd.internally forming a latent image by .Iaddend.internally trapping photolytically generated electrons. Photographic elements incorporating the blended emulsions exhibit improved covering power and can exhibit enhanced speed.

公开(公告)号：US06727056B2

公开(公告)日：2004-04-27

申请号：US08915683

申请日：1997-08-21

申请人： Munehisa Fujita ,  Atsushi Matsunaga

发明人： Munehisa Fujita ,  Atsushi Matsunaga

IPC分类号： G03C1005

CPC分类号： G03C8/10 ,  G03C1/0051 ,  G03C1/09 ,  G03C1/10 ,  G03C1/485 ,  G03C1/48569 ,  G03C2001/03535 ,  G03C2001/0357 ,  G03C2001/091 ,  G03C2200/59

摘要： The present invention provides a tabular internal latent image type direct positive photographic silver halide emulsion which provides a high sensitivity and a low re-reversal negative sensitivity and a color diffusion transfer photographic light-sensitive material comprising such an emulsion. The present invention also provides an internal latent image type direct positive photographic silver halide emulsion which can be prepared with a good reproducibility and a color diffusion transfer photographic light-sensitive material less susceptible to variation of sensitivity and S/N ratio comprising such an emulsion. An internal latent image type direct positive photographic silver halide emulsion comprising tabular silver halide grains having an average grain diameter of not less than 0.3 &mgr;m and an aspect ratio (diameter of silver halide grain in circle equivalence/thickness of silver halide grain) of from not less than 2 to not more than 100 in an amount of not less than 50% of all silver halide grains as calculated in terms of area is provided, wherein the average grain thickness a along the main plane of the external shell thereof is from not less than 0.2 &mgr;m to not more than 1.5 &mgr;m and the average grain thickness b perpendicular to the main plane of the external shell thereof is from not less than 0.04 &mgr;m to not more than 0.30 &mgr;m. An internal latent image type direct positive photographic silver halide emulsion is provided, which is prepared from a seed crystal emulsion which has been prepared via desalting process.

摘要翻译： 本发明提供了提供高灵敏度和低反转负反应灵敏度的片状内部潜像型直接正性照相卤化银乳剂和包含这种乳液的彩色扩散转移照相感光材料。 本发明还提供了可以以良好的再现性制备的内部潜像型直接正性照相卤化银乳剂，并且颜色扩散转移照相感光材料不太容易受到包含这种乳液的敏感性和S / N比变化的影响。 包含平均粒径不小于0.3μm的平板状卤化银颗粒和纵横比（卤化银颗粒的直径等于或等于卤化物颗粒的厚度/卤化银颗粒的厚度）的内部潜像型直接正性照相卤化银乳剂 按照面积计算，以不低于所有卤化银颗粒的50％的量少于2至不超过100，其中沿其外壳的主平面的平均颗粒厚度a不小于 0.2μm以上且1.5μm以下，与外壳的主面垂直的平均粒径b为0.04μm以上且0.30μm以下。 提供了一种内部潜像型直接正性照相卤化银乳剂，其由通过脱盐方法制备的晶种乳液制备。

公开(公告)号：US4943518A

公开(公告)日：1990-07-24

申请号：US288022

申请日：1988-12-21

申请人： Tomomi Yoshizawa ,  Keiji Ogi ,  Yasuo Tosaka ,  Kazuya Kuramoto ,  Yoshiyuki Nonaka

发明人： Tomomi Yoshizawa ,  Keiji Ogi ,  Yasuo Tosaka ,  Kazuya Kuramoto ,  Yoshiyuki Nonaka

IPC分类号： G03C1/485 ,  G03C7/30

CPC分类号： G03C7/3022 ,  G03C1/48569

摘要： A direct positive type silver halide color photographic material and an image forming method are disclosed. A green sensitive emulsion layer of the photographic material comprises silver halide grains having at least two peaks on the size distribution curve thereof and the grain size corresponding to the smallest grain size peak among the peaks is not more than 0.3 .mu.m and a magenta coupler represented by the following Formula (M-I); ##STR1## wherein Z is a group of non-metal atoms necessary to complete a nitrogen-containing heterocyclic ring; X is a hydrogen atom or a split-off group and R is a substituent. The photographic material is developed with a color development in the presence of a fogging agent to directly form the positive image after imagewise exposure to light. Thus obtained image is improved in a increased maximum density, lowered minimum density and wider exposure latitude. Stability of gradation with respect to variation of development conditions is also improved.

公开(公告)号：USRE32149E

公开(公告)日：1986-05-20

申请号：US627017

申请日：1984-07-02

申请人： Robert A. Silverman ,  Harry A. Hoyen

发明人： Robert A. Silverman ,  Harry A. Hoyen

IPC分类号： G03C1/485

CPC分类号： G03C1/48569

摘要： Photographic elements particularly adapted for forming direct-positive images are disclosed in which a radiation-sensitive core-shell emulsion layer and a silver halide emulsion layer incapable of forming a surface latent image within the direct-positive exposure latitude of the first emulsion layer and containing a grain population capable of internally .Iadd.forming a latent image by internally .Iaddend.trapping photolytically generated electrons are both present. The photographic elements are capable of exhibiting increased covering power, greater maximum density, and increased speed.

公开(公告)号：US5035993A

公开(公告)日：1991-07-30

申请号：US474243

申请日：1990-02-05

申请人： Shigeo Hirano ,  Ashita Murai ,  Seiji Suzuki

发明人： Shigeo Hirano ,  Ashita Murai ,  Seiji Suzuki

IPC分类号： G03C1/06 ,  G03C1/10 ,  G03C1/485

CPC分类号： G03C1/10 ,  G03C1/067 ,  G03C1/48546 ,  G03C1/48569

摘要： A silver halide photographic material, which comprises a support having provided thereon at least one light-sensitive silver halide emulsion layer, the silver halide emulsion layer or at least one other hydrophilic colloid layer of the material containing at least one heterocyclic quaternary ammonium salt compound represented by the following general formula (I): ##STR1## wherein Z represents non-metallic atoms necessary for forming a 5- or 6-membered heterocyclic ring which may be substituted with a substituted group; R.sup.1 represents an aliphatic group; R.sup.2 represents a hydrogen atom, an aliphatic group, or an aromatic group; Y represents a charge-balancing counter ion; and n is 0 or 1; provided that at least one of R.sup.1, R.sup.2, and Z has an acyl group, a hydrazine group, or a hydrazone group, or R.sup.1 and R.sup.2 form a 6-membered dihydropyridinium skeleton, and at least one of R.sup.1, R.sup.2, and Z includes the group -X-L-.sub.m wherein X represents a group that enhances adsorption to silver halide, L represents a divalent linkage group, and m is 0 or 1.

摘要翻译： 一种卤化银照相材料，其包括其上提供有至少一种感光卤化银乳剂层的支持体，所述卤化银乳剂层或至少一种含有至少一种表示为杂环季铵盐化合物的杂环季铵盐化合物的其它亲水胶体层 通过以下通式（I）表示：其中Z表示形成可被取代基取代的5-或6-元杂环所需的非金属原子; R1表示脂肪族基团; R2表示氢原子，脂族基团或芳香族基团; Y表示电荷平衡反离子; 并且n为0或1; 条件是R1，R2和Z中的至少一个具有酰基，肼基或腙基，或者R 1和R 2形成6元二氢吡啶骨架，并且R 1，R 2和Z中的至少一个包括 基团-XLm，其中X表示增强对卤化银的吸附的基团，L表示二价连接基团，m表示0或1。

公开(公告)号：US4444874A

公开(公告)日：1984-04-24

申请号：US418313

申请日：1982-09-15

申请人： Robert A. Silverman ,  Harry A. Hoyen

发明人： Robert A. Silverman ,  Harry A. Hoyen

IPC分类号： G03C1/005 ,  G03C1/485 ,  G03C5/24

CPC分类号： G03C1/48569 ,  Y10S430/141

摘要： Photographic elements particularly adapted for forming direct-positive images are disclosed in which a radiation-sensitive core-shell emulsion layer and a silver halide emulsion layer incapable of forming a surface latent image within the direct-positive exposure latitude of the first emulsion layer and containing a grain population capable of internally trapping photolytically generated electrons are both present. The photographic elements are capable of exhibiting increased covering power, greater maximum density, and increased speed.

公开(公告)号：US4444865A

公开(公告)日：1984-04-24

申请号：US418314

申请日：1982-09-15

申请人： Robert A. Silverman ,  Harry A. Hoyen

发明人： Robert A. Silverman ,  Harry A. Hoyen

IPC分类号： G03C1/485 ,  G03C1/02 ,  G03C1/36 ,  G03C7/00

CPC分类号： G03C1/48569 ,  Y10S430/141

摘要： Blended emulsions for use in forming a direct-positive image are disclosed. The emulsions are comprised of a first, radiation-sensitive core-shell grain population having a relatively low coefficient of variation and a second, substantially smaller size grain population capable of internally trapping photolytically generated electrons. Photographic elements incorporating the blended emulsions exhibit improved covering power and can exhibit enhanced speed.

摘要翻译： 公开了用于形成直接正像的混合乳液。 乳液由具有相对较低的变异系数的第一辐射敏感核 - 壳晶粒群和能够内部捕获光解产生的电子的第二，基本上较小的粒度粒子组成。 掺入混合乳液的摄影元件显示出改进的覆盖力并且可以表现出增强的速度。