公开(公告)号：US4917991A

公开(公告)日：1990-04-17

申请号：US210397

申请日：1988-06-23

申请人： Yasuo Tosaka ,  Keiji Ogi ,  Atushi Kamitakahara

发明人： Yasuo Tosaka ,  Keiji Ogi ,  Atushi Kamitakahara

IPC分类号： G03C1/485

CPC分类号： G03C1/48576

摘要： A direct positive silver halide photographic material with an internal latent image-type silver halide emulsion layer that provides a direct positive image by a fogging treatment (for example, an overall exposure, or surface developing treatment in the presence of a fogging agent) after imagewise exposure. The silver halide particles which form the emulsion layer consist essentially of a core portion made of silver halide and having been chemically sensitized or doped with metal ions. There are provided a plural number of shell portions made of silver halide containing silver chloride. The chloride content of an inner shell adjacent to the outmost shell of the particles has a smaller amount of chloride content than that of the outermost shell. The photographic material is used by first imagewise exposing it to light, effecting overall fogging treatment on the silver halide particles and processing the exposed photographic material to produce the image.

摘要翻译： 具有内部潜像型卤化银乳剂层的直接正性卤化银照相材料，其通过雾化处理（例如，在雾化剂存在下的总体曝光或表面显影处理）提供直接正像 曝光。 形成乳剂层的卤化银颗粒基本上由卤化银制成的核心部分组成，并已被化学增感或掺杂金属离子。 提供了多个由含有氯化银的卤化银制成的外壳部分。 与壳体的最外壳相邻的内壳的氯化物含量比最外层的氯化物含量少。 照相材料通过首先成像曝光使用，对卤化银颗粒进行总体雾化处理并处理曝光的照相材料以产生图像。

公开(公告)号：US4925780A

公开(公告)日：1990-05-15

申请号：US234023

申请日：1988-08-18

申请人： Tomimi Yoshizawa ,  Keiji Ogi ,  Atushi Kamitakahara

发明人： Tomimi Yoshizawa ,  Keiji Ogi ,  Atushi Kamitakahara

IPC分类号： G03C1/12 ,  G03C1/16 ,  G03C1/18 ,  G03C1/29 ,  G03C1/485 ,  G03C1/83 ,  G03C7/00 ,  G03C7/30

CPC分类号： G03C1/29 ,  G03C1/48538 ,  G03C7/3003 ,  G03C1/12

摘要： A direct positive silver halide light-sensitive color photographic material comprising, on a support, (1) at least three light-sensitive silver halide emulsion layers containing internal latent image-type light-sensitive silver halide grains, (2) specific sensitizing dyes having formulas [I], [II] and [III], respectively defined in the specification, and (3) at least one anti-irradiation compound selected from the group consisting of those compounds having formulas [IV], [V] and [VI], respectively defined in the specification, is disclosed.

公开(公告)号：US4840879A

公开(公告)日：1989-06-20

申请号：US153519

申请日：1988-01-29

申请人： Atushi Kamitakahara ,  Keiji Ogi

发明人： Atushi Kamitakahara ,  Keiji Ogi

IPC分类号： G03C1/485 ,  G03C5/50 ,  G03C7/392

CPC分类号： G03C5/50 ,  G03C1/48538 ,  G03C7/39208 ,  Y10S430/141

摘要： The present invention relates to a process for forming a direct positive color image comprising(a) imagewise exposing a direct positive photosensitive silver halide color photographic material to light to yield an imagewise exposed material, said photographic material having a support and at least one silver halide emulsion layer thereon, said emulsion layer containing a coupler and internal latent image type silver halide crystals whose surfaces have not been fogged prior to said imagewise exposure, and(b) uniformly exposing to light the entire surface of said imagewise exposed photographic material before or during a development step and in the presence of a substance of Formula IV, a compound of formula I and a color-developing agent consisting of aromatic primary amino compounds selected from the group consisting of N-methyl-aminophenol, 4-amino-3-methyl-N-ethyl-N-(-methanesulfonamidoethyl) aniline,4-amino-3-methyl-N-ethyl-N-(-hydroxyethyl) aniline, 4-amino-3-methyl-N, N-diethyl-p-phenylenediamine, and 4-amino-3-methyl-N-ethyl-N- -methoxyethyl-p-phenylenediamine; wherein the oxidized products thereof form a coupling reaction with said couplers to produce dyes, ##STR1## wherein R.sub.1 is selected from hydrogen, alkyls of 1 to 4 carbon atoms which are substituted or unsubstituted, and aryls which are substituted or unsubstituted; R.sub.2 -R.sub.5 are individually selected from the same group as R.sub.1 and hydroxyl; ##STR2## wherein R.sub.14 and R.sub.15 are individually selected from hydrogen, alkyls having 1 to 4 carbon atoms which may be substituted or unsubstituted, aryl groups which may be substituted or unsubstituted and non-metal atoms necessary for linking R.sub.14 and R15 in such a manner as to create a 5 or 6 membered ring, and R.sub.16 is selected from hydrogen, alkyls having 1 to 4 carbon atoms which may be substituted or unsubstituted, and aryl groups which may be substituted, and wherein said exposed photographic material is processed in a prebath or a color developer containing 10 mg/1 to 10 g/l of said formula [I] compound.

公开(公告)号：US4910130A

公开(公告)日：1990-03-20

申请号：US123968

申请日：1987-11-23

申请人： Keiji Ogi ,  Atushi Kamitakahara

发明人： Keiji Ogi ,  Atushi Kamitakahara

IPC分类号： G03C1/36 ,  G03C1/485

CPC分类号： G03C1/48538

摘要： A direct positive light-sensitive silver halide photographic material having at least one silver halide emulsion layer containing at least two kinds of internal latent image type silver halide grains not previously fogged and having the same spectral sensitivity, and capable of obtaining a direct positive image by effecting surface development while applying and/or after applying overall exposure after imagewise exposure; wherein said at least two kinds of internal latent image type silver halide grains have different sensitivity from each other and at least one of silver halide grains having lower sensitivity is desensitized with use of an organic or inorganic desensitizer, and a method of use of the direct positive light-sensitive silver halide photographic material for carrying out development at a higher temperature.

摘要翻译： 具有至少一种卤化银乳剂层的直接正光敏卤化银照相材料，其至少含有两种内部潜像型卤化银颗粒，这些内部潜像型卤化银颗粒未被雾化并且具有相同的光谱灵敏度，并且能够通过 在施加影像曝光后施加和/或施加整体曝光后，进行表面发育; 其中所述至少两种内部潜像型卤化银颗粒彼此具有不同的灵敏度，并且使用有机或无机脱敏剂使具有较低灵敏度的卤化银颗粒中的至少一种脱敏，以及使用直接 用于在较高温度下进行显影的正光敏卤化银照相材料。

公开(公告)号：US4440851A

公开(公告)日：1984-04-03

申请号：US433683

申请日：1982-10-12

申请人： Yasuo Tosaka ,  Keiji Ogi

发明人： Yasuo Tosaka ,  Keiji Ogi

IPC分类号： G03C5/50 ,  G03C1/485 ,  G03C7/30 ,  G03C7/16

CPC分类号： G03C7/3041 ,  G03C1/48538 ,  G03C7/3022 ,  Y10S430/141

摘要： A method for obtaining direct positive images wherein a photographic material having a support and at least two silver halide emulsion layers coated thereon, each layer having a different spectral sensitivity, said emulsions being of the internal latent image type and containing unfogged silver halide crystals, is imagewise exposed and then subjected to an overall area exposure prior to or during the development thereof to form the image. The overall area exposure is such that the photographic intensity ratios between various layers are not more than 6 and the intensity of such overall exposure has a value between light intensities which give 0.8 times the maximum image density of the particular emulsion layer and 10 times that light intensity value. The photographic intensity ratio is the ratio between photographic intensities of two emulsion layers and the photographic intensity is the reciprocal of the intensity value that corresponds to an image density which is 50% of the maximum when an imagewise-unexposed internal latent type image silver halide emulsion layer is subjected to light-intensity scale exposure and the density of the image formed is measured with a light which corresponds to the absorption maximum of the image.

摘要翻译： 一种用于获得直接正像的方法，其中具有载体的照相材料和涂覆在其上的至少两个卤化银乳剂层，每层具有不同的光谱灵敏度，所述乳液是内部潜像型并含有未雾化的卤化银晶体， 成像曝光，然后在显影之前或期间对其进行总体曝光以形成图像。 总面积曝光使得各层之间的照相强度比不大于6，并且这种整体曝光的强度具有在特定乳剂层的最大图像密度的0.8倍和光的10倍的光强之间的值 强度值。 照相强度比是两个乳剂层的照相浓度之间的比例，照相强度是对应于当成像未曝光的内部潜像型卤化银乳剂的图像浓度为最大值的50％时的强度值的倒数 层进行光强度刻度曝光，并且用对应于图像的吸收最大值的光来测量形成的图像的密度。

公开(公告)号：US4279987A

公开(公告)日：1981-07-21

申请号：US93734

申请日：1979-11-13

申请人： Keiji Ogi ,  Takashi Sasaki ,  Yasuo Tosaka

发明人： Keiji Ogi ,  Takashi Sasaki ,  Yasuo Tosaka

IPC分类号： G03C1/485 ,  G03C5/24

CPC分类号： G03C1/48538

摘要： This invention relates to a light-sensitive, direct positive silver halide photographic material, more particularly to a light-sensitive silver halide photographic material of internal latent image type containing a novel, development-accelerating compound, as used for the formation of a direct positive image by imagewise exposure followed by overall light-exposure before and/or during development or development treatment in the presence of a fogging agent.

摘要翻译： 本发明涉及一种感光的直接正性卤化银照相材料，更具体地说涉及一种内含潜像的感光卤化银照相材料，其含有新颖的显影促进化合物，用于形成直接阳性 通过在雾化剂存在下，在显影或显影处理之前和/或期间进行图像曝光，然后进行总体曝光。

公开(公告)号：US4268621A

公开(公告)日：1981-05-19

申请号：US61400

申请日：1979-07-27

申请人： Keiji Ogi ,  Takashi Sasaki ,  Kenichiro Okaniwa ,  Yasuo Tosaka

发明人： Keiji Ogi ,  Takashi Sasaki ,  Kenichiro Okaniwa ,  Yasuo Tosaka

IPC分类号： G03C1/485 ,  G03C5/24 ,  G03C1/06

CPC分类号： G03C1/48538

摘要： A light-sensitive silver halide photographic material of internal latent image type for use in the formation of a direct positive image containing a compound of the following general formula (I) or (II):General formula (I) ##STR1## General formula (II) ##STR2## The photographic material can be developed after a shortened induction period, can yield good positive images that are free from stain when undergoing fogging development, and can yield good direct positive images with a high maximum density and a low minimum density. The photographic material forms a direct positive image when subjected, after imagewise exposure, to an overall light exposure or development in the presence of a fogging agent and can be developed by surface development.

摘要翻译： 用于形成含有下列通式（I）或（II）的化合物的直接正像的内部潜像型感光卤化银照相材料：通式（I）通式（I） II）照相材料可以在缩短的诱导期后显影，可以产生良好的正图像，当发生起雾时不会产生污点，并且可以产生具有高最大密度和低最小密度的良好的直接正像。 拍摄材料在成像曝光之后，在雾化剂存在下进行整体曝光或显影时，形成直接的正像，并可通过表面显影而显影。

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：US4863838A

公开(公告)日：1989-09-05

申请号：US188647

申请日：1988-05-02

申请人： Keiji Ogi ,  Yasuo Tosaka

发明人： Keiji Ogi ,  Yasuo Tosaka

IPC分类号： G03C1/485

CPC分类号： G03C1/48576

摘要： A direct positive photographic material having a support and a silver halide emulsion layer thereon contains internal latent image type silver halide grains. These grains have a core/shell structure and have not been previously fogged. Each grain comprises a conversion type silver halide core and a silver halide shell over the core.The layer would produce, when exposed for a given time upto one second and developed at 20.degree. C. for 4 minutes with a certain internal developing solution, a maximum density which is at least five times that obtained when the layer is similarly exposed and developed with a particular surface developing solution.

摘要翻译： 其上具有支持体和卤化银乳剂层的直接正性照相材料含有内部潜像型卤化银颗粒。 这些颗粒具有核/壳结构，并且以前没有雾化。 每个晶粒包含核心上的转化型卤化银芯和卤化银壳。 该层将在一定时间内暴露一秒钟，并在一定的内部显影液中在20℃下显影4分钟时，该层的最大密度至少是当该层类似地暴露和显影时获得的五倍 具有特定的表面显影溶液。

公开(公告)号：US4749644A

公开(公告)日：1988-06-07

申请号：US875611

申请日：1986-06-18

申请人： Yasuo Tosaka ,  Keiji Ogi ,  Atsushi Kamitakahara

发明人： Yasuo Tosaka ,  Keiji Ogi ,  Atsushi Kamitakahara

IPC分类号： G03C7/00 ,  G03C1/485 ,  G03C7/30 ,  G03C7/32 ,  G03C1/02 ,  G03C1/08 ,  G03C7/26

CPC分类号： G03C7/3003 ,  G03C7/3022 ,  Y10S430/141 ,  Y10S430/158

摘要： In a light-sensitive direct posi silver halide color photographic material having photographic constituent layers comprising at least one silver halide emulsion layer containing latent image type silver halide grains not previously fogged, which is capable of giving a direct posi image by subjecting the whole surface to exposure or effecting surface development in the presence of a fogging agent, after image exposure, the improvement wherein said internal latent image type silver halide grains are composed of at least two groups of internal latent image type silver halide grains having average grain sizes different from each other, and at least one compound capable of releasing a development inhibiting substance or its precursor through the reaction with the oxidized product of a color developing agent is contained in at least one layer of said photographic constituent layers.According to the present invention, there can be obtained a direct posi color photographic material improved in processing stability, having smooth gradation and excellent image quality, in which the respective photographic performances of at least two groups of internal latent type silver halide grains having grains sizes different from each other are fully utilized.

摘要翻译： 在具有摄影构成层的光敏直接卤化银彩色照相材料中，该照相构成层包含至少一个含有未被雾化的潜像型卤化银颗粒的卤化银乳剂层，其能够通过使整个表面经受 在雾化剂存在下曝光或进行表面显影，图像曝光后，其中所述内部潜像型卤化银颗粒由平均粒度不同于每个的至少两组内部潜像型卤化银颗粒组成的改进 并且至少一种能够通过与彩色显影剂的氧化产物反应释放显影抑制物质或其前体的化合物被包含在至少一层所述照相构成层中。 根据本发明，可以获得提高处理稳定性的直接posi彩色照相材料，具有平滑的等级和优异的图像质量，其中至少两组具有粒径的内部潜在型卤化银颗粒的照相性能 彼此不同，被充分利用。