Colour photographic copying material

摘要

A colour-photographic copying material comprising at least one red-sensitive silver halide emulsion layer containing at least two cyan couplers, at least one green-sensitive silver halide emulsion layer containing at least one magenta coupler, and at least one blue-sensitive silver halide emulsion layer containing at least one yellow coupler, characterised in that at least one cyan coupler corresponds to formula (I) and at least one cyan coupler corresponds to formula (II) wherein R¹, R^1' represent, independently of one another, a hydrogen atom or an alkyl group, R², R^2' represent, independently of one another, an alkyl or an aryl group, R³, R^3' represent, independently of one another an alkyl, alkenyl, alkoxy, aryloxy, acyloxy, acylamino, sulphonyloxy, sulphamoylamino, sulphonamido, ureido, hydroxycarbonyl, hydroxycarbonylamino, carbamoyl, alkylthio, arylthio, alkylamino or arylamino group or a hydrogen atom, Z, Z' represent, independently of one another, a hydrogen atom or a group that may be cleaved under the conditions of chromogenic development, X, X' represent, independently of one another, S, NH or NR⁴, and R⁴ represents an alkyl or an aryl group, and wherein at least 20% by weight of each of the cyan couplers of formulae (I) and (II), based on the total quantity of cyan coupler, are contained in the red-sensitive layer, is characterised by good colour reproduction, good dye stability, a smooth surface, a high cyan colour density, and in that it may be produced economically.