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    • 43. 发明授权
    • Method of making a silver halide photographic material having enhanced light absorption and low fog
    • 制备具有增强的光吸收和低雾的卤化银照相材料的方法
    • US06790602B2
    • 2004-09-14
    • US10346745
    • 2003-01-17
    • David R. FosterStephen P. SingerWilliam J. HarrisonAlan R. Pitt
    • David R. FosterStephen P. SingerWilliam J. HarrisonAlan R. Pitt
    • G03C1005
    • G03C1/38G03C1/005G03C1/29G03C7/39216G03C7/39236G03C2001/0854
    • This invention relates to a method of spectrally sensitizing a silver halide emulsion comprising the following steps in the following order a) providing a silver halide emulsion comprising tabular silver halide grains having an inner dye layer adjacent to the silver halide grain, said dye layer comprising at least one dye (Dye 1) that is capable of spectrally sensitizing silver halide, b) adding to the emulsion at least one dye (Dye 2) capable of providing a second dye layer adjacent to the inner dye layer, and c) adding to the emulsion a non-cationic surfactant or a scavenger for oxidized developer, or a combination of the two, to form a silver halide emulsion comprising silver halide grains having associated therewith two dye layers, wherein the dye layers are held together by non-covalent forces or by in situ bond formation; the outer dye layer adsorbs light at equal or higher energy than the inner dye layer; and the energy emission wavelength of the outer dye layer overlaps with the energy absorption wavelength of the inner dye layer.
    • 本发明涉及一种使卤化银乳剂光谱增感的方法,包括以下顺序的以下步骤:a)提供包含具有与卤化银颗粒相邻的内染料层的片状卤化银颗粒的卤化银乳剂,所述染料层至少包含 能够使卤化银光谱增感的一种染料(染料1),b)向该乳液中加入至少一种能够提供与该内部染料层相邻的第二染料层的染料(染料2),以及c)向该乳液中添加 非阳离子表面活性剂或用于氧化显影剂的清除剂或两者的组合,以形成包含与其相关联的两个染料层的卤化银颗粒的卤化银乳剂,其中染料层通过非共价键或通过 原位结合; 外染料层以等于或高于内染料层的能量吸收光; 并且外部染料层的能量发射波长与内部染料层的能量吸收波长重叠。
    • 49. 发明授权
    • Color photographic negative elements with enhanced printer compatibility
    • 彩色照相底片,增强打印机兼容性
    • US5455150A
    • 1995-10-03
    • US75068
    • 1993-06-10
    • Jared B. MooberryPaul B. MerkelStephen P. Singer
    • Jared B. MooberryPaul B. MerkelStephen P. Singer
    • G03C7/00G03C1/83G03C7/18G03C7/392G03C1/46
    • G03C7/18G03C1/83
    • A silver halide photographic negative has a red sensitive layer containing a coupler which reacts with oxidized color developer to form a cyan dye, a blue sensitive layer containing a coupler which reacts with oxidized color developer to form a yellow dye, and a green sensitive layer containing a coupler which reacts with oxidized color developer to form a magenta dye. The coupler in the green sensitive layer produces a magenta dye which has relatively low density in the 560-590 nm range as compared with magenta dyes produced by pyrazolotriazole type couplers or 1-phenyl-3-acylamino-5-pyrazolone couplers. The element additionally has an inert dye present, preferably positioned below the green sensitive layer containing the foregoing coupler. The inert dye has a peak absorption between 560-590 nm so that the negative has a ratio of density at 580 nm to density at 550 nm, both as measured at neutral midscale exposure, which is greater than exhibited by the element absent the inert dye.
    • 卤化银照相底片具有含有与氧化显色剂反应形成青色染料的成色剂的红色敏感层,含有与氧化显色剂反应形成黄色染料的成色剂的蓝色敏感层和含有 与氧化的彩色显影剂反应形成品红色染料的成色剂。 绿色敏感层中的成色剂产生品红色染料,与由吡唑并三唑型成色剂或1-苯基-3-酰基氨基-5-吡唑啉酮成色剂产生的品红色染料相比,在560-590nm范围内具有相对较低的密度。 元素另外具有存在的惰性染料,优选位于含有前述成色剂的绿色敏感层下方。 惰性染料在560-590nm之间具有峰值吸收,使得阴性在580nm处的密度与550nm处的密度之比(无论是在惰性染料中没有表现出的中性中值曝光) 。
    • 50. 发明授权
    • Photographic coupler compositions and methods for reducing continued
coupling
    • 摄影耦合器组合物和减少连续耦合的方法
    • US5298368A
    • 1994-03-29
    • US689436
    • 1991-04-23
    • Paul B. MerkelEdward SchofieldStephen P. Singer
    • Paul B. MerkelEdward SchofieldStephen P. Singer
    • G03C7/384G03C7/30G03C7/388G03C7/392G03C1/34G03C7/42
    • G03C7/3003G03C7/3012G03C7/3885
    • Photographic coupler compositions comprise (a) a pyrazolone magenta dye-forming coupler compound, and (b) a sulfoxide compound in an amount sufficient to reduce continued coupling of the coupler compound during the bleach step of a color photographic process. The sulfoxide compound is of the formula ##STR1## wherein R.sub.1 and R.sub.2 are individually selected from the group consisting of straight and branched chain alkyl groups, alkenyl groups and alkylene groups; straight and branched chain alkyl groups, alkenyl groups and alkylene groups containing at least one substituent selected from the group consisting of alkoxy, aryloxy, aryl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, carbonamido and carbamoyl groups and halogen atoms; a phenyl group; and a phenyl group containing at least one substituent selected from the group consisting of alkyl, alkoxy, aryloxy, aryl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, carbonamido and carbamoyl groups and halogen atoms. Additionally, R.sub.1 and R.sub.2 combined contain at least 12 carbon atoms. Preferably, the coupler composition is substantially free of phenol compounds when R.sub.1 and R.sub.2 are other than unsubstituted alkyl, alkenyl or alkylene groups.
    • 摄影成色剂组合物包含(a)形成吡唑啉酮品红色染料的成色剂化合物,和(b)足够量的亚砜化合物,其量可以在彩色照相法漂白步骤期间减少偶合剂化合物的持续偶联。 亚砜化合物具有式(*化学结构*),其中R 1和R 2分别选自直链和支链烷基,烯基和亚烷基; 直链和支链烷基,烯基和含有至少一个选自烷氧基,芳氧基,芳基,烷氧基羰基,芳氧基羰基,酰氧基,碳酰氨基和氨基甲酰基和卤素原子的取代基的亚烷基; 苯基; 和含有至少一个选自烷基,烷氧基,芳氧基,芳基,烷氧基羰基,芳氧基羰基,酰氧基,碳酰氨基和氨基甲酰基和卤素原子的取代基的苯基。 另外,R 1和R 2组合​​含有至少12个碳原子。 当R 1和R 2不是未取代的烷基,烯基或亚烷基时,优选地,所述成色剂组合物基本上不含酚化合物。