发明名称 Photographic element containing codispersions of yellow methine filter or density correction dyes and reducing agents
摘要 The invention provides a multilayer color negative photographic element comprising a support, at least one light-sensitive silver halide emulsion layer sensitive to each of the blue, green and red regions of the visible spectrum, one or more yellow or orange-yellow cyano benzoxazolyl or cyano benzothiazolyl arylidene type methine filter or density correction dyes of structure I, below, codispersed with one or more hydroquinone, catechol or sulfonamidophenol reducing agents, <IMAGE> I wherein: R1 is hydrogen or an alkyl group; R2 is an alkyl group or an aryl group; R3 is hydrogen, a halogen, an alkyl group, an alkoxy group or an aryloxy group; R4 is hydrogen or an alkyl group; R5 is hydrogen or an alkyl group; R6 is hydrogen or an alkyl group; X is oxygen or sulfur; each R7 is independently selected from the group consisting of a halogen, an alkyl, aryl, alkoxy, aryloxy, carbonamido, sulfonamido, carbamoyl, alkoxycarbonyl, aryloxycarbonyl, acyloxy, acyl, sulfamoyl, sulfonyl, sulfoxyl, sulfonyloxy, alkylthio, arylthio, and cyano groups; n is 0, 1, 2 or 3; and provided that R1 and R2 or R2 and R3 may join to form a ring. The photographic element of the invention exhibits improved hue due to the presence of the dye codispersion of the invention.
申请公布号 US5800971(A) 申请公布日期 1998.09.01
申请号 US19960583394 申请日期 1996.01.05
申请人 发明人
分类号 G03C1/83;G03C7/392;G03C11/02;(IPC1-7):G03C1/46 主分类号 G03C1/83
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