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    • 31. 发明授权
    • Azopyrazolone masking couplers
    • 唑吡酮掩蔽剂
    • US5492799A
    • 1996-02-20
    • US263642
    • 1994-06-22
    • Daniel L. KappRobert J. RossStephen P. SingerBernard A. Clark
    • Daniel L. KappRobert J. RossStephen P. SingerBernard A. Clark
    • G03C7/00C09B29/50G03C7/333G03C7/384G03C7/18
    • C09B29/366G03C7/3335
    • The invention provides a photographic element comprising a support bearing a light-sensitive photographic silver halide layer having associated therewith a masking coupler comprising:(1) a parent group containing a -1-phenyl-3-anilinopyrazolin-5-one having electron-withdrawing substituents on the phenyl and anilino rings of a type and number sufficient to provide a combined Hammett sigma(para) value for such substituents of at least 1.4;(2) a coupling-off group at the 4 position of the pyrazolone of the parent group comprising an arylazo dye containing on the aryl ring the following:(A) a substituent para to the azo functionality selected from the group consisting of hydroxyl, and alkoxy, carbonamido, and sulfonamido, each unsubstituted or substituted with nonaromatic groups, and(B) "n" additional substituents selected from the group consisting of alkyl, alkoxy, carbonamido, and sulfonamido, unsubstituted or substituted with nonaromatic groups, where "n" is 0 to 4;provided that substituent (A) and a substituent (B) may form a ringwherein one of the substituents (A) or (B) contains an alkyl group of at least 8 carbon atoms, unsubstituted or substituted with nonaromatic substituents, and said substituent contains at least 70% of the saturated carbon atoms in all of the substituents (A) and (B) provided that where the substituent (A) forms a ring with a substituent (B), the entire ring will be counted as said one of the substituents which contains an alkyl group of at least 8 carbon atoms for purposes of satisfying the 70% requirement.
    • 本发明提供了一种照相元件,其包括带有感光照相卤化银层的载体,其具有与之相关的掩蔽成色剂,其包含:(1)含有具有吸电子的1-苯基-3-苯胺基吡唑啉-5-酮的母体基团 苯基和苯胺基环上的取代基的类型和数目足以提供至少1.4的这种取代基的组合哈米特σ(对)值; (2)在母体基团的吡唑啉酮的4位上的偶联基团,其包含在芳基环上含有芳基偶氮染料,如下:(A)选自羟基和 烷氧基,碳酰胺基和亚磺酰氨基,各自未取代或被非芳族基团取代,和(B)选自烷基,烷氧基,碳酰氨基和亚磺酰氨基的“n”个附加取代基,未取代或被非芳族基团取代,其中“n” 为0〜4; 条件是取代基(A)和取代基(B)可以形成环,其中取代基(A)或(B)之一含有至少8个碳原子的烷基,未取代或被非芳族取代基取代,所述取代基包含 所有取代基(A)和(B)中的饱和碳原子的至少70%条件是当取代基(A)与取代基(B)形成环时,整个环将按照 含有至少8个碳原子的烷基的取代基用于满足70%的要求。
    • 32. 发明授权
    • Magenta image-dye couplers of improved hue
    • 洋红色图像染料成色剂改善色调
    • US5256528A
    • 1993-10-26
    • US872880
    • 1992-04-23
    • Paul B. MerkelStephen P. SingerBernard Arthur ClarkPaul Louis R. Stanley
    • Paul B. MerkelStephen P. SingerBernard Arthur ClarkPaul Louis R. Stanley
    • G03C7/305G03C1/08G03C7/26G03C7/32
    • G03C7/30529
    • A photographic element and process provide a magenta coupler of the formula: ##STR1## wherein (a) at least one of X1, X2 and R1 and at least one of R2 and R3 is a substituent individually selected from carbamoyl, alkoxycarbonyl, aryloxycarbonyl, sulfamoyl, alkylsulfonyl, arylsulfonyl, alkoxysulfonyl, aryloxysulfonyl, alkylsulfoxyl, arylsulfoxyl, acyloxy, cyano, nitro, and trifluoromethyl;(b) the substituents X1, X2, R1, R2 and R3 not selected from the (a) group may be selected from alkyl, alkoxy, aryloxy, acylamino, alkylthio, arylthio, sulfonamido, alkylureido, arylureido, alkoxycarbonylamino, aryloxycarbonylamino, and halogen and in the case of R3 hydrogen;(c) substituents R1 and R2 are para or meta to the carbon attached to the nitrogen atom;(d) a and b are 1 to 3;(e) Q is an alkylthio or arylthio coupling-off group.The element provides a deeper magenta hue and reduced blue absorption by the resulting magenta dye.
    • 照相元件和方法提供下式的品红成色剂:其中(a)X 1,X 2和R 1中的至少一个和R 2和R 3中的至少一个是分别选自氨基甲酰基,烷氧基羰基,芳氧基羰基,氨磺酰基 ,烷基磺酰基,芳基磺酰基,烷氧基磺酰基,芳氧基磺酰基,烷基亚砜基,芳基亚砜基,酰氧基,氰基,硝基和三氟甲基; (b)未选自(a)基团的取代基X1,X2,R1,R2和R3可以选自烷基,烷氧基,芳氧基,酰氨基,烷硫基,芳硫基,亚磺酰氨基,烷基脲基,芳基脲基,烷氧基羰基氨基,芳氧基羰基氨基和卤素 在R3氢的情况下; (c)取代基R 1和R 2与连接在氮原子上的碳对位或间位; (d)a和b为1〜3; (e)Q是烷硫基或芳硫基离去基团。 该元素提供更深的品红色色调,并由所得品红色染料减少蓝色吸收。
    • 35. 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。