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    • 5. 发明授权
    • Method for improving the light fastness of color photographic dye images
    • 改善彩色摄影影像光度快速的方法
    • US4113488A
    • 1978-09-12
    • US686201
    • 1976-05-13
    • Minoru YamadaTadao ShishidoAtsuaki Arai
    • Minoru YamadaTadao ShishidoAtsuaki Arai
    • G03C7/26G03C1/06G03C7/392G03C8/24G03C7/00G03C1/40
    • G03C7/39208G03C8/246
    • A method for improving the light fastness of a magenta color image in a silver halide color photograph which comprises incorporating into a layer containing a magenta color image, which is formed upon reaction of a magenta coupler and an oxidation product of an aromatic primary amine color developing agent, at least one light fastness improving phenolic compound and at least one synergistic light fastness improving agent selected from a sulfide or sulfoxide compound represented by the following general formula (V):x--b--y (v)wherein B represents --S-- or --SO--; X and Y, which may be the same or different, each represents --(CH.sub.2).sub.n --R.sub.1, ##STR1## or ##STR2## and R.sub.1 represents --COOR.sub.3, ##STR3## --OR.sub.6, --O--COR.sub.6, --NHSO.sub.2 R.sub.6, ##STR4## --NHCOR.sub.6, a cyano group, an aryl group or a hydroxy group; R.sub.2 represents an alkyl group of 1 to 30 carbon atoms, an aryl group, an aralkyl group, a hydroxy group, a cyano group or --COOR.sub.3 ; R.sub.3 R.sub.4, R.sub.5 and R.sub.6 each represents a hydrogen atom, an alkyl group of 1 to 30 carbon atoms, an aryl group, or an aralkyl group, with the proviso that R.sub.6 is not a hydrogen atom; and n is an integer of 1 to 4. A silver halide color photographic light-sensitive material which provides a magenta dye image having a good light fastness is also disclosed.
    • 6. 发明授权
    • Two-equivalent magenta couplers with amido coupling-off groups
    • 具有酰胺偶联离子基团的两等效品红成色剂
    • US4040835A
    • 1977-08-09
    • US590998
    • 1975-06-27
    • Atsuaki AraiKeisuke ShibaMinoru YamadaNobuo FurutachiKotaro Nakamura
    • Atsuaki AraiKeisuke ShibaMinoru YamadaNobuo FurutachiKotaro Nakamura
    • C07D231/40C09B26/02G03C7/38G03C7/00G03C1/40
    • C07D231/40G03C7/38
    • A two-equivalent magenta coupler forming magenta dye images in a color photographic material by a coupling reaction with an oxidation product of a primary aromatic amino color developing agent and having the formula (I) ##STR1## wherein [A] represents a residue of a magenta dye-forming coupler; ##STR2## represents a group which is substituted for one of the hydrogen atoms of the active methylene group of the coupler A; Z represents a hydrogen atom, an alkyl group, an aryl group, or a heterocyclic group; B represents a --D-Y residue or an --N Q residue; D represents an oxygen atom, a sulfur atom, or an --NR-- group; R of the --NR-- group represents a hydrogen atom, an alkyl group, or an aryl group; Y represents an alkyl group, an aryl group, or a heterocyclic group; Q of the --N Q residue represents a non-metal atomic group necessary for forming a 5-membered or 6-membered nitrogen-containing heterocyclic group; n is 1 or 2 and when n is 2, B can also represent a --Y group; a color photographic silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer and containing the two-equivalent magnetic coupler having the formula (I); and an image forming method comprising developing an exposed photographic silver halide light-sensitive material comprising a support having thereon at least one silver halide emulsion layer is the presence of the two-equivalent magenta coupler having the formula (I).
    • 通过与主要芳族氨基显色剂的氧化产物的偶联反应并且具有式(I)(I)的方法,在彩色照相材料中形成品红染料图像的两等效品红色成色剂其中[A]表示 品红色染料成色剂的残留物; 表示取代了成色剂A的活性亚甲基的一个氢原子的基团。 Z表示氢原子,烷基,芳基或杂环基; B表示-D-Y残基或-NQ残基; D表示氧原子,硫原子或-NR-基团; -NR-基团的R表示氢原子,烷基或芳基; Y表示烷基,芳基或杂环基; -N残基的Q表示形成5元或6元含氮杂环基所需的非金属原子团; n为1或2,当n为2时,B也可以表示-Y基; 一种彩色照相卤化银感光材料,其包括其上具有至少一个卤化银乳剂层并含有具有式(I)的双等效磁性成色剂的载体; 以及包括显影曝光的照相卤化银感光材料的图像形成方法,其包含其上具有至少一个卤化银乳剂层的载体是存在具有式(I)的双等效品红成色剂。