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公开(公告)号：US5372975A
公开(公告)日：1994-12-13
申请号：US5586
申请日：1993-01-19
申请人： Sadayasu Ishikawa , Hiroshi Takada , Toshiya Kondo
发明人： Sadayasu Ishikawa , Hiroshi Takada , Toshiya Kondo
CPC分类号： G03C1/015
摘要： Disclosed is a silver halide photographic emulsion which comprises a dispersion medium and silver halide grains, wherein said silver halide grains are prepared by a process comprising the steps of:(a) preparing a dispersion medium, wherein said dispersion medium comprises a gelatin solution,(b) introducing an oxidizer into said dispersion medium; and(c) introducing silver halide seed grains.The silver halide emulsion provides a sliver halide photographic light-sensitive material high in sensitivity and excellent in pressure resistance.
摘要翻译： 公开了一种卤化银照相乳剂，其包含分散介质和卤化银颗粒，其中所述卤化银颗粒通过包括以下步骤的方法制备：（a）制备分散介质，其中所述分散介质包含明胶溶液（ b）将氧化剂引入所述分散介质中; 和（c）引入卤化银籽粒。 卤化银乳剂提供了高灵敏度和优异耐压性的银条摄影感光材料。
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2.发明授权
公开(公告)号：US5380640A
公开(公告)日：1995-01-10
申请号：US185470
申请日：1994-01-24
申请人： Toshiya Kondo , Sadayasu Ishikawa
发明人： Toshiya Kondo , Sadayasu Ishikawa
CPC分类号： G03C1/0051 , G03C5/02
摘要： A silver halide photographic light-sensitive emulsion is disclosed. The emulsion comprises silver halide grains formed under a condition in which fine grains of silver halide are supplied into the protective colloid solution, in which the silver halide grains are formed, in a period in the course of formation of the grains, andthe sum of projection area of tabular grains each having a aspect ratio larger than 1.2 accounts for lower than 50% of the total projection area of the whole silver halide grains of the emulsion, and the tabular grains have an average aspect ratio is more than 1.2 and less than 5.0 and an average grain size of not larger than 0.6 .mu.m.
摘要翻译： 公开了一种卤化银照相感光乳剂。 该乳剂包括在形成了卤化银颗粒的保护胶体溶液中，在形成颗粒的过程中，将卤化银微粒供给到形成有卤化银颗粒的条件下形成的卤化银颗粒， 每个具有大于1.2的长宽比的片状颗粒的投影面积低于乳液的整个卤化银颗粒的总投影面积的50％，并且平片状颗粒的平均纵横比大于1.2且小于 5.0，平均粒径不大于0.6μm。
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3.发明授权
公开(公告)号：US5460936A
公开(公告)日：1995-10-24
申请号：US310940
申请日：1994-09-22
申请人： Toshiya Kondo , Sadayasu Ishikawa
发明人： Toshiya Kondo , Sadayasu Ishikawa
CPC分类号： G03C1/015 , G03C1/0051 , G03C1/10 , G03C1/16 , G03C1/18 , G03C2001/0055 , G03C2001/0153 , G03C2001/0156 , G03C2001/03535 , G03C2001/03558 , G03C2200/44
摘要： A silver halide photographic emulsion is disclosed, wherein the silver halide emulsion contains silver halide grains having an average iodide content of not less than 4 mol %, the grains comprising an internal silver halide phase having an average iodide content of 10 mol % to a solid solution limit and a surface silver halide phase having an average iodide content of not more than 4.5 mol %.
摘要翻译： 公开了一种卤化银照相乳剂，其中所述卤化银乳剂含有平均碘化物含量不小于4mol％的卤化银颗粒，所述卤化银颗粒包含平均碘化物含量为10mol％的内部卤化银相至固体 溶液极限和平均碘化物含量不超过4.5mol％的表面卤化银相。
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公开(公告)号：US06623917B2
公开(公告)日：2003-09-23
申请号：US10105469
申请日：2002-03-25
IPC分类号： G03C1035
CPC分类号： G03C1/0051 , G03C2001/0055 , G03C2001/0056 , G03C2001/03552 , G03C2001/0357
摘要： A silver halide photographic emulsion is disclosed, comprising silver halide grains wherein at least 80% of a total grain projected area is accounted for by tabular grains, the tabular grains having an average aspect ratio of at least 12, a variation coefficient of grain diameter of less than 30%, an average overall surface iodide content of 5 to 15 mol % and an average surface iodide content in the vicinity of corners of the grains of less than 3 mol %; and the tabular grains further having a shallow electron trap center in the peripheral region of the grain.
摘要翻译： 公开了一种卤化银照相乳剂，其包含卤化银颗粒，其中总颗粒投影面积的至少80％由片状颗粒占据，片状颗粒的平均纵横比至少为12，晶粒直径的变化系数 小于30％，平均总表面碘含量为5〜15摩尔％，颗粒角附近的平均表面碘化物含量小于3摩尔％; 并且片状颗粒在颗粒的周边区域中还具有浅电子陷阱中心。
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5.发明授权
公开(公告)号：US5273871A
公开(公告)日：1993-12-28
申请号：US770990
申请日：1991-10-01
CPC分类号： G03C1/035 , G03C7/3022
摘要： A silver halide emulsion comprising a dispersing medium and light-sensitive silver halide grains wherein said silver halide grains each comprise:(a) a high silver iodide-containing phase having a silver iodide content of not less than 15 mol % in the internal portion,(b) a low silver iodide-containing phase locating outside the phase (a) and having a silver iodide content lower than that of the phase (a), and(c) a surface phase having a silver iodide content higher than that of an inner phase adjacent thereto,and wherein a part or all of the phase (c) and a part or all of the phase (a) or the phase (b) are formed by supplying a fine silver halide grain emulsion prepared in the presence of protective colloid.
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公开(公告)号：US06171738B2
公开(公告)日：2001-01-09
申请号：US09052728
申请日：1998-03-31
申请人： Hiroshi Takada , Sadayasu Ishikawa , Satoshi Ito
发明人： Hiroshi Takada , Sadayasu Ishikawa , Satoshi Ito
IPC分类号： G03C1015
CPC分类号： G03C1/015 , G03C1/0051
摘要： A method for preparing a silver halide emulsion is disclosed, wherein the method controls a mean intergrain distance in the process of growing silver halide grains contained in a silver halide emulsion, as defined below, over a period of from the start of growing silver halide grains to completion thereof: Mean intergrain distance=(Volume of the reaction mixture solution/number of grains in the reaction mixture solution)⅓.
摘要翻译： 公开了一种制备卤化银乳剂的方法，其中该方法控制如下定义的卤化银乳剂中所含的卤化银颗粒的生长过程中卤化银颗粒生长的时间段内的平均颗粒间距离 完成：
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公开(公告)号：US06432626B1
公开(公告)日：2002-08-13
申请号：US09704408
申请日：2000-11-02
申请人： Hideo Sugimoto , Sadayasu Ishikawa
发明人： Hideo Sugimoto , Sadayasu Ishikawa
IPC分类号： G03C1005
CPC分类号： G03C1/0051 , G03C7/3022 , G03C2001/0055 , G03C2001/0056 , G03C2001/0058 , G03C2001/0157 , G03C2001/03558
摘要： A silver halide emulsion is disclosed, comprising silver halide grains, wherein a variation coefficient of grain diameter of the whole silver halide grains is not more than 25%, wherein at least 50% of the total grain projected area is accounted for by tabular grains having two twin planes and an aspect ratio of not less than 6 and meeting the following requirement, 1.0≦b/a≦1.3. Photographic materials containing the silver halide emulsion is also disclosed.
摘要翻译： 公开了一种卤化银乳剂，其包含卤化银颗粒，其中整个卤化银颗粒的粒径变化系数不超过25％，其中总颗粒投影面积的至少50％由具有 两个双面平面，长宽比不小于6并满足以下要求，还公开了含有卤化银乳剂的摄影材料。
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公开(公告)号：US5906914A
公开(公告)日：1999-05-25
申请号：US7052
申请日：1998-01-14
申请人： Kumiko Taguchi , Sadayasu Ishikawa
发明人： Kumiko Taguchi , Sadayasu Ishikawa
CPC分类号： G03C1/0051 , G03C1/08 , G03C1/09 , G03C2001/0056 , G03C2001/0058 , G03C2001/03529 , G03C2001/03535 , G03C2001/03558 , G03C2001/03594 , G03C2001/0845 , G03C2001/0854 , G03C2001/093
摘要： A silver halide light sensitive photographic material is disclosed, comprising a support having thereon a silver halide emulsion layer containing tabular grains having an aspect ratio of not less than 5 and an even number of parallel twin planes, the tabular grains further satisfying the following requirements:(A) a coefficient of variation of grain size being 20% or less,(B) 0.7.ltoreq.y/x.ltoreq.2.0, where x represent a coefficient of variation of twin plane spacing and y represents a coefficient of variation of grain thickness, and (C) the grains having, in the interior of the grain, an internal layer having an iodide content higher than that of the grain surface, and the iodide content of the grain surface being higher than an average overall iodide content of the grains.
摘要翻译： 公开了一种卤化银感光照相材料，其包括其上具有包含长宽比不小于5的平板状颗粒和偶数个平行双平面的卤化银乳剂层的支撑体，片状颗粒还满足以下要求： （A）晶粒尺寸的变异系数为20％以下，（B）0.7
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公开(公告)号：US4963467A
公开(公告)日：1990-10-16
申请号：US216142
申请日：1988-07-07
IPC分类号： G03C1/035
CPC分类号： G03C1/035 , G03C2001/03535 , G03C2001/03558
摘要： A silver halide photographic emulsion is disclosed. The emulsion contains core/shell type silver halide grain comprising a core essentially consisting of silver iodobromide and at least one shell essentially consisting of silver iodobromide or silver bromide, in which said silver halide emulsion have an average silver iodide content of less than 7 mol %, and said core has a silver iodide content of not less than 10 mol % a shell arranged at the outermost portion of said shell has a silver iodide content of not more than 5 mol %, and said core and shell have a distinct core/shell structure. The emulsion is excellent in developing activity, ready in contrast control and excellent in processing stability, with out deteriorating both sensitivity and pressure resistance property.
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公开(公告)号：US06245498B1
公开(公告)日：2001-06-12
申请号：US09391127
申请日：1999-09-07
申请人： Katsuhiko Suzuki , Hiromoto Ii , Sadayasu Ishikawa
发明人： Katsuhiko Suzuki , Hiromoto Ii , Sadayasu Ishikawa
IPC分类号： G03C1035
CPC分类号： G03C1/0051 , G03C1/015 , G03C1/16 , G03C1/18 , G03C7/30 , G03C2001/0056 , G03C2001/0153 , G03C2001/03558
摘要： A silver halide emulsion is disclosed, comprising tabular grains having an aspect ratio of 5 or more, the tabular grains further having dislocation lines of 30 or more per a grain, in a fringe portion of the grain and the tabular grains each containing silver iodide, the content of which gradually and continuously varies in the direction of from the grain center to the edge.
摘要翻译： 公开了一种卤化银乳剂，其包括纵横比为5以上的片状颗粒，在晶粒的边缘部分中每片颗粒上的位错线为30以上的片状颗粒和各自含有碘化银的片状颗粒， 其含量在从谷物中心到边缘的方向上逐渐且连续地变化。
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