Cyan-forming color couplers according to the formula: ##STR1## wherein Z is hydrogen in the case of 4-equivalent couplers or a substituent that splits off upon color development, thus conferring a 2-equivalent character to the color coupler, and Y is a ballasting group. These cyan-forming color couplers can be incorporated in (a) red-sensitized silver halide emulsion layer(s) of a photographic multilayer color element or in a non-light-sensitive colloid layer in water-permeable relationship with the red-sensitized emulsion layer(s).
根据以下公式制备青色形成的色偶:##STR1## 其中,在4当量色偶的情况下,Z是氢,或者是在颜色发展时脱离的取代基,从而赋予色偶2当量特性,而Y是一个负载基团。这些青色形成的色偶可以被纳入(a)感光红敏
银卤化物乳剂层的多层照相彩色元素中或者在与红敏乳剂层(s)具有
水透过性的非感光胶体层中。