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    • 31. 发明授权
    • Epitaxially sensitized tabular grain emulsions exhibiting enhanced speed
and contrast
    • 显示出增强的速度和对比度的外源敏化的片状颗粒乳剂
    • US5612175A
    • 1997-03-18
    • US592169
    • 1996-01-26
    • Lyn M. EshelmanPaul J. MadiganJoseph C. DeatonDavid A. DumontMichael G. AntoniadesSharon G. Johnston
    • Lyn M. EshelmanPaul J. MadiganJoseph C. DeatonDavid A. DumontMichael G. AntoniadesSharon G. Johnston
    • G03C1/035G03C1/005G03C1/09G03C1/12G03K1/035
    • G03C1/0051G03C1/09G03C1/12
    • A radiation-sensitive spectrally sensitized tabular grain emulsion is disclosed which exhibits improved speed and contrast. The tabular grains have {111} major faces, contain greater than 70 mole percent bromide and up to 10 mole percent iodide, based on silver, account for greater than 90 percent of total grain projected area, and have an average equivalent circular diameter of at least 3.5 .mu.m. The tabular grains have latent image forming chemical sensitization sites on their surfaces including epitaxially deposited silver halide protrusions of a face centered cubic rock salt crystal lattice structure forming epitaxial junctions with the tabular grains. The protrusions are restricted to those portions of the tabular grains located nearest peripheral edges of and accounting for less than 10 percent of the {111} major faces of the tabular grains, accounting for less than 5 percent of total silver forming the tabular grains and protrusions, containing a silver chloride concentration at least 10 mole percent higher than that of the tabular grains, and contain at least 1 mole percent iodide, based on silver in the protrusions.
    • 公开了辐射敏感的光谱敏化片状颗粒乳剂,其显示出改进的速度和对比度。 片状颗粒具有{111}主面,含有大于70摩尔百分比的溴和基于银的高达10摩尔%的碘,占总颗粒投影面积的大于90%,并且具有平均当量圆直径 至少3.5亩。 片状颗粒在它们的表面上具有潜像形成的化学增感位点,包括外面沉积的卤化银突起,其表面立方岩盐晶格结构与片状颗粒形成外延结。 突出部分限于位于最近周边边缘的片状颗粒的部分,并且占片状颗粒的{111}主面的少于10%,占形成片状颗粒和突起的总银的小于5% ,其含有比片状颗粒高至少10摩尔%的氯化银浓度,并且基于突起中的银含有至少1摩尔%的碘化物。
    • 32. 发明授权
    • Silver halide color photographic light-sensitive material
    • 卤化银彩色摄影感光材料
    • US5610005A
    • 1997-03-11
    • US662290
    • 1996-06-12
    • Hiroshi KawakamiJunji Nishigaki
    • Hiroshi KawakamiJunji Nishigaki
    • G03C7/00G03C1/08G03C1/09G03C1/16G03C1/29G03C7/26
    • G03C1/08G03C1/16G03C1/29
    • A color photographic light-sensitive material which has a high storage stability and a high sensitivity and in which photographic properties vary little with the passage of time from photography to development is provided. At least one light-sensitive silver halide emulsion layer constituting a silver halide color photographic light-sensitive material is spectrally sensitized with at least one type of a spectral sensitizing dye represented by Formula (I) below, and at least one silver halide emulsion contained in this light-sensitive silver halide emulsion layer is subjected to reduction sensitization in the manufacturing process of the emulsion. (In Formula (I), each of R.sub.11 and R.sub.12 represents an alkyl group, Z.sub.11 represents a group of atoms required to form a benzene ring, Z.sub.12 represents a group of atoms required to form a benzothiazole nucleus, a benzoselenazole nucleus, a benzoxazole nucleus, or a naphthoxazole nucleus, and X.sub.11 represents a charge-balancing counter anion.)Formula (I) ##STR1##
    • 提供了一种具有高储存稳定性和高灵敏度的摄影感光材料,其中摄影性能随着从摄影到发展的时间的流逝变化很小。 构成卤化银彩色照相感光材料的至少一种感光卤化银乳剂层用至少一种由下式(I)表示的光谱增感染料和至少一种卤化银乳剂进行光谱增感, 该感光卤化银乳剂层在乳液的制造过程中进行还原增感。 (式(I)中,R 11和R 12分别表示烷基,Z 11表示形成苯环所需的原子团,Z 12表示形成苯并噻唑核所需的原子团,苯并硒唑核,苯并恶唑核 ,或萘并恶唑核,X11表示电荷平衡反阴离子。)式(I)
    • 34. 发明授权
    • Silver halide photographic material
    • 卤化银照相材料
    • US5573899A
    • 1996-11-12
    • US245071
    • 1994-05-17
    • Akira Kase
    • Akira Kase
    • G03C1/035G03C1/09G03C1/34G03C1/825G03C1/83
    • G03C1/09G03C1/035G03C1/825G03C2001/03517G03C2001/03535
    • A silver halide photographic material having at least one light-sensitive emulsion layer containing a silver halide emulsion on a support, in which at least one silver halide emulsion layer contains silver halide grains of silver chloride or silver chlorobromide having a silver chloride content of 90 mol % or more, the silver halide grains being tellurium-sensitized, and at least one of light-sensitive emulsion layers or non-light-sensitive emulsion layers on the support contains at least one specific compound represented by formula (I), (II) or (III) herein. The material has excellent rapid processability and a high sensitivity. It involves little photographic fluctuation before and after continuous processing thereof and little photographic fluctuation due to variation of the ambient humidity during exposure thereof. The image sharpness of the material may be noticeably improved without appreciably detracting from the sensitivity thereof.
    • 一种卤化银照相材料,其具有至少一种在载体上含有卤化银乳剂的感光乳剂层,其中至少一个卤化银乳剂层含有氯化银的卤化银颗粒或氯化银氯化银含量为90mol %以上的卤化银颗粒是碲敏化的,载体上的感光乳剂层或非感光乳剂层中的至少一种含有至少一种由式(I),(II)表示的特定化合物, 或(III)。 该材料具有优异的快速加工性和高灵敏度。 它在连续处理之前和之后涉及很少的照相波动,并且由于曝光期间环境湿度的变化而引起的照相波动很小。 材料的图像清晰度可以明显改善,而不会明显地降低其灵敏度。
    • 35. 发明授权
    • Silver halide photographic light-sensitive material
    • 卤化银照相感光材料
    • US5561039A
    • 1996-10-01
    • US458245
    • 1995-06-02
    • Yoshiro Ochiai
    • Yoshiro Ochiai
    • G03C7/00G03C1/035G03C1/09G03C1/12G03C1/20G03C1/34
    • C09B23/0066C09B23/0075G03C1/09G03C1/127G03C1/34
    • A silver halide photographic light-sensitive material. It comprises a support and at least one silver halide emulsion layer thereon, wherein at least one silver halide emulsion layer comprises silver chlorobromide emulsion particles containing 95 mol % or more of silver chloride or silver chloride emulsion particles as well as at least one thiosulfonic compound of formula (X) and at least one sulfinic compound of formula (Y), and the particles contained in the silver halide emulsion layer are sensitized by gold, selenium, or tellurium, and are spectrally sensitized by a red-sensitive methine dye represented by formula (I): ##STR1## wherein Q, R.sup.1 and other symbols each independently represents a specific atom or group, n is an integer from 0 to 6, M is a counter ion which neutralizes an electric charge, and m is 0 or 1.
    • 卤化银照相感光材料。 它包括载体和至少一个卤化银乳剂层,其中至少一个卤化银乳剂层包含含有95mol%或更多氯化银或氯化银乳剂颗粒的氯化银溴化银乳剂颗粒以及至少一种硫代磺酸化合物 式(X)和至少一种式(Y)的亚磺酸化合物,并且包含在卤化银乳剂层中的颗粒被金,硒或碲致敏,并且由式(X)表示的红色敏感的次甲基染料进行光谱增感 (I):其中Q,R 1和其它符号各自独立地表示特定的原子或基团,n是0至6的整数,M是中和的抗衡离子(I)的化合物(I)R21SO2SM21(X)R22SO2M22 电荷,m为0或1。
    • 38. 发明授权
    • Ultrathin tabular grain emulsions with dopants at selected locations
    • 在选定位置具有掺杂剂的超薄片状颗粒乳剂
    • US5536632A
    • 1996-07-16
    • US441132
    • 1995-05-15
    • Xin WenRichard L. DaubendiekDonald L. BlackJoseph C. DeatonTimothy R. GerseyJoseph G. LighthouseMyra T. OlmRobert D. Wilson
    • Xin WenRichard L. DaubendiekDonald L. BlackJoseph C. DeatonTimothy R. GerseyJoseph G. LighthouseMyra T. OlmRobert D. Wilson
    • G03C1/005G03C1/08G03C1/46G03C1/035G03C1/09
    • G03C1/0051G03C1/08G03C1/46
    • A chemically and spectrally sensitized ultrathin tabular grain emulsion is disclosed including tabular grains (a) having {111} major faces, (b) containing greater than 70 mole percent bromide, based on silver, (c) accounting for greater than 90 percent of total grain projected area, (d) exhibiting an average equivalent circular diameter of at least 0.7 .mu.m, and (e) exhibiting an average thickness of less than 0.07 .mu.m.Improved sensitivity is observed when the surface chemical sensitization sites include silver halide protrusions of a face centered cubic crystal lattice structure forming epitaxial junctions with the tabular grains and having a higher overall solubility than at least that portion of the tabular grains forming epitaxial junctions with the protrusions and a sensitivity enhancing combination of dopants are contained in the silver halide grains including a first sensitivity enhancing dopant capable of providing shallow electron trapping sites and a second sensitivity enhancing selenium dopant. To further enhance sensitivity, one of the sensitivity enhancing dopants is restricted to the tabular grains while the other is restricted to the silver halide epitaxy.
    • 公开了化学和光谱增感的超薄片状颗粒乳剂,其包括具有{111}主面的片状颗粒(a),(b)基于银含有大于70摩尔%的溴化物,(c)占总量的90%以上 (d)平均当量圆直径至少为0.7μm,(e)平均厚度小于0.07μm。 当表面化学增感部位包括面心立方晶格结构的卤化银突起形成与片状颗粒形成外延结和具有比至少部分形成与凸起的外延结的片状颗粒更高的总体溶解度时,观察到灵敏度提高 并且包含掺杂剂的敏感度增强组合包含在包含能够提供浅电子捕获位点的第一灵敏度增强掺杂剂和第二灵敏度增强硒掺杂剂的卤化银颗粒中。 为了进一步提高灵敏度,灵敏度增强掺杂剂之一限于片状晶粒,而另一种限于卤化银外延。
    • 39. 发明授权
    • Emulsion and photographic element
    • 乳液和摄影元素
    • US5518872A
    • 1996-05-21
    • US336817
    • 1994-11-09
    • Roy KingRoger A. WeissKenneth J. ReedGerald W. Klein
    • Roy KingRoger A. WeissKenneth J. ReedGerald W. Klein
    • G03C1/00G03C1/005G03C1/035G03C1/08G03C1/09G03C1/10G03C1/12
    • G03C1/0051G03C1/08G03C1/10G03C1/12
    • Improved sensitivity and reduced minimum density are provided by an emulsion in which high bromide tabular grains exhibit an average thickness of less than 0.07 .mu.m and have latent image forming reduction chemical sensitization sites and adsorbed spectral sensitizing dye on their surfaces. The tabular grains contain a dopant capable of forming shallow electron trapping sites, and the spectral sensitizing dye exhibits an oxidation potential more positive than 1.2 volts. A photographic element is disclosed which locates the emulsion in a layer overlying a minus blue recording emulsion layer. Exceptionally sharp images are formed in the minus blue recording emulsion layer when in the overlying emulsion layer greater than 97 percent of the total projected area of the silver halide grains having an equivalent circular diameter of at least 0.2 .mu.m is accounted for by tabular grains having an average equivalent circular diameter of at least 0.7 .mu.m.
    • 提高灵敏度和降低最小密度由高溴化物片状颗粒表现出小于0.07μm的平均厚度并具有潜像形成还原化学增感位点和吸附的光谱增感染料在其表面上的乳液提供。 片状晶粒包含能够形成浅电子捕获位点的掺杂剂,并且光谱增感染料表现出比1.2伏更正的氧化电位。 公开了一种照相元件,其将乳剂定位在覆盖负蓝色记录乳剂层的层中。 当在上覆的乳剂层中,当具有至少0.2μm等效圆直径的卤化银颗粒的总投影面积的97%以上时,在负蓝色记录乳剂层中形成非常清晰的图像, 平均当量圆直径至少为0.7μm。