Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible cyan dye moiety comprising a 6-heterocyclylazo-3-pyridinol, the compound having the formula: ##STR1## wherein: (a) Y represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic fused ring; (b) CAR represents a ballasted carrier moiety capable of releasing the diffusible cyan dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions; (c) R represents a hydroxy group, a salt thereof, or a hydrolyzable precursor thereof, or CAR which is linked to the dye moiety through an oxygen atom thereon; and (d) n is 0, 1 or 2 with the proviso that when n is 0, then R is CAR which is linked to the dye moiety through an oxygen atom thereon.
本文介绍了一种新型的不可扩散化合物,能够释放至少一种可扩散的青色
染料基团,包括六元杂环偶氮基-3-
吡啶醇,以及使用该化合物的摄影元素、扩散转移装置、配位化合物和过程。该化合物的
化学式为:##STR1## 其中:(a) Y代表完成5-或6-成员芳香杂环融合环所需的原子;(b) CAR代表一个带负载的载体基团,在碱性条件下随着
银卤化物乳剂层的显影而释放可扩散的青色
染料基团;(c) R代表一个羟基、其盐或可
水解的前体,或者是通过其上的氧原子与
染料基团连接的CAR;(d) n为0、1或2,但当n为0时,R为通过其上的氧原子与
染料基团连接的CAR。