Colour photographic print material esp. paper giving positive inter-image effect without DIR coupler

摘要

Colour photographic Ag halide (AgX) print material has blue-sensitive (BS) and green-sensitive (GS) AgX emulsion layer(s) contg. yellow and magenta coupler(s) respectively and an intermediate layer between BS and GS layer(s). The novel features are that (a) the intermediate layer contains a white coupler, (b) the yellow coupler is an acylacetanilide of formula (I); and (c) the magenta coupler is a pyrazolotriazole of formula (II): R<1> = alkyl, aryl or heterocyclyl; R<2> = H or a gp. released by coupling; R<3> = alkyl or aryl; R<4>, R<5>, R<6>, R<7> = (ar)alkyl, aryl, alkoxy, aroxy, alkylthio, arylthio, amino, anilino, acylamino, CN, alkoxycarbonyl, carbamoyl or sulphamoyl; o R<4>, R<7> = H; all the above gps. may have other substits.; x = 1-4; R<8> = H, -SiMe3 or -COCH3; X = H or a gp. released by chromogenic development; L = alkylene, opt. with -SO2-, -NR<9>-CO-, -O-, -CO-NR<9>- or -N(R<1->)- in the chain and opt. substd. by COOH; R<9> = H or alkyl; R<10> = phenyl.