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    • 2. 发明授权
    • Color photographic element containing oxidized developer-scavenging
naphtholic coupler forming wash-out dye
    • 含有氧化的显影剂清除的萘环成色剂形成洗出染料的彩色照相元件
    • US5932407A
    • 1999-08-03
    • US846910
    • 1997-04-30
    • William J. BegleyStephen P. SingerAllan F. Sowinski
    • William J. BegleyStephen P. SingerAllan F. Sowinski
    • G03C7/305G03C7/392G03C7/32
    • G03C7/30523Y10S430/156Y10S430/158
    • A color photographic element comprising a film support and a first radiation-sensitive layer further includes an oxidized developer-scavenging naphtholic coupler that is substantially immobilized in the element but forms a dye that can be removed from the material during photographic processing. The naphtholic coupler, which comprises a dye-forming moiety and a ballasted, substantially photographically inert coupling-off moiety, has the structure ##STR1## where R.sup.1 and R.sup.2 each independently represents hydrogen, an alkyl group, an alkoxyalkyl group, or a hydroxyalkyl group, R.sup.1 and R.sup.2 together containing a total of up to 4 carbon atoms; R.sup.3 represents hydrogen, halo, or an alkoxy, an alkylcarbonamido, an alkylsulfonamido, a carbamoyl, or a sulfamoyl group containing up to 4 carbon atoms; R.sup.1, R.sup.2, and R.sup.3 of the dye-forming moiety are each devoid of alkali-solubilizing groups and together allow substantially complete removal during photographic processing of the dye formed by the naphtholic coupler; R.sup.4, R.sup.5 and R.sup.6 represent substituent groups that together comprise ballast sufficient to substantially immobilize the coupler in the color photographic element and together render the coupling-off moiety substantially photographically inert, at least one of R.sup.4, R.sup.5 and R.sup.6 comprises at least 8 carbon atoms; and R.sup.5 is selected from a group of substituent groups effective to substantially prevent formation of dye and/or stain by reaction of the coupling-off moiety with oxidized developer.
    • 包含薄膜载体和第一辐射敏感层的彩色照相元件还包括基本上固定在元件中的氧化的显影剂清除的萘酚成色剂,但形成可在照相处理过程中从材料中除去的染料。 包含染料形成部分和压实的基本上为摄影惰性的偶合离去部分的萘酚成色剂具有其中R 1和R 2各自独立地表示氢,烷基,烷氧基烷基或羟烷基的结构,R 1和 R2总共含有最多4个碳原子; R3表示氢,卤素或烷氧基,烷基碳酰氨基,烷基亚磺酰氨基,氨基甲酰基或含有至多4个碳原子的氨磺酰基; 染料形成部分的R 1,R 2和R 3各自没有碱增溶基团,并且在由萘鎓偶联剂形成的染料的照相处理期间一起允许基本上完全去除; R 4,R 5和R 6表示一起包含足以使成色剂基本上固定在彩色照相元件中并且一起使耦合部分基本上呈摄影惰性的压载物的取代基,R4,R5和R6中的至少一个包含至少8个碳原子 ; 并且R 5选自有效基本上防止偶联离子部分与氧化显影剂反应形成染料和/或着色的取代基组。