公开(公告)号：US5219724A

公开(公告)日：1993-06-15

申请号：US797040

申请日：1991-11-25

Applicant: Mariko Kato ,  Takeshi Sampei

Inventor： Mariko Kato ,  Takeshi Sampei

IPC: G03C1/047 ,  G03C1/06 ,  G03C1/74 ,  G03C5/29

CPC classification number: G03C1/74 ,  G03C1/061 ,  Y10S430/136

Abstract: A method of producing a silver halide photographic light-sensitive material is disclosed. The light-sensitive material comprises a support, provided thereon, a photographic layer including a silver halide emulsion layer and the photographic layer contains a hydrazine compound for forming an extremely high contrast image even when developed with a developer having a pH value of not higher than 11. The light-sensitive material is produced by the method comprising steps ofcoating a coating solution to form the photographic layer on the support,drying the coated layer, andpacking the light-sensitive material after the drying step,wherein the drying of the coated layer is carried out with air having relative humidity of not more than 50% after the time when water amount contained in the coated layer reaches 300% of the dry-weight of binder contained in the coated layer. The light-sensitive material has inhibited in formation of pepper spots and gives high contrast image even after prolonged storage.

Abstract translation: 公开了一种制备卤化银照相感光材料的方法。 感光材料包括其上提供的支撑体，包括卤化银乳剂层的照相层，并且照相层含有用于形成极高对比度图像的肼化合物，即使在用pH值不高于 感光材料通过以下方法制造，该方法包括以下步骤：在载体上涂覆涂布溶液以形成照相层，干燥涂层，并在干燥步骤之后包装感光材料，其中干燥 在涂层中所含的水量达到涂层中所含的粘合剂的干重的300％以上时，相对湿度不大于50％的空气进行涂布。 感光材料在胡椒斑点的形成中已被抑制，并且即使在长时间保存之后也能够提供高对比度图像。

公开(公告)号：US5155007A

公开(公告)日：1992-10-13

申请号：US675636

申请日：1991-03-22

Applicant: Yoji Hara ,  Akira Kobayashi ,  Takeshi Sampei ,  Miho Sai ,  Akira Ogasawara

Inventor： Yoji Hara ,  Akira Kobayashi ,  Takeshi Sampei ,  Miho Sai ,  Akira Ogasawara

IPC: G03C1/06 ,  G03C1/33

CPC classification number: G03C1/33 ,  G03C1/061

Abstract: An improved silver halide photographic material that has at least one silver halide emulsion layer on a support and that contains a hydrazine derivative in said emulsion layer or an adjacent layer. The improvement is that said emulsion layer or at least one of the other hydrophilic colloidal layers contains at least one of the compounds represented by the following general formulas (I) and (II): ##STR1## wherein R.sub.1 and R.sub.1 ' are each a group selected from among a substituted or unsubstituted alkane residue, an alkene residue, a benzene residue, a cyclohexane residue and a nitrogenous heterocyclic residue; R.sub.2 is a substituted or unsubstituted alkyl group; R.sub.3, R.sub.3 ', R.sub.4 and R.sub.4 ' are each a hydrogen atom or a substituted or unsubstituted methyl group, provided that R.sub.3 and R.sub.4 or R.sub.3 ' are not a methyl group at the same time; Y is a divalent organic residue; M and M' are each a hydrogen atom, an alkali metal, an ammonium salt or an organic amine salt; P is a positive integer; and m is 0 to 1.

公开(公告)号：US4766058A

公开(公告)日：1988-08-23

申请号：US886552

申请日：1986-07-16

Applicant: Takeshi Sampei ,  Toshifumi Iijima ,  Yoshitaka Yamada ,  Hiroshi Shimazaki ,  Kenji Kumashiro ,  Yoshiharu Mochizuki ,  Syoji Matsuzaka ,  Hiroshi Kashiwagi

Inventor： Takeshi Sampei ,  Toshifumi Iijima ,  Yoshitaka Yamada ,  Hiroshi Shimazaki ,  Kenji Kumashiro ,  Yoshiharu Mochizuki ,  Syoji Matsuzaka ,  Hiroshi Kashiwagi

IPC: G03C7/30 ,  G03C5/24 ,  G03C1/02 ,  G03C1/08 ,  G03C7/32

CPC classification number: G03C7/3022

Abstract: A photographic material comprising at least one blue sensitive silver halide emulsion layer is disclosed. The silver density of the emulsion layer is not less than 4.0.times.10.sup.-1 g/cm.sup.3 and the dry thickness of the layer is not more than 4.0 .mu.m. A core/shell type silver halide emulsion and a high-speed reaction type scavenger for the oxidation products of a developing agent are preferably used for the emulsion layer. The photographic material has a high sensitivity and provides an image having a superior sharpness and resolution.

Abstract translation: 公开了一种包含至少一种感蓝卤化银乳剂层的照相材料。 乳剂层的银密度不小于4.0×10-1g / cm3，层的干厚度不大于4.0μm。 对于乳剂层，优选使用核/壳型卤化银乳剂和用于显​​影剂氧化产物的高速反应型清除剂。 照相材料具有高灵敏度并且提供具有优异的清晰度和分辨率的图像。