Photographic products and processes employing novel nondiffusible magenta dye-releasing compounds and precursors thereof

摘要

Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible compound capable of releasing at least one diffusible magenta dye moiety comprising a 4-(2-heterocyclylazo)phenol having a heterocyclic ring fused thereto, the compound having the formula: wherein: (a) X represents the atoms necessary to complete a 5- or 6-membered heterocyclic ring; (b) Y represents the atoms necessary to complete a 5- or 6-membered heterocyclic fused ring; (c) CAR represents a ballasted carrier moiety capable of releasing the diffusible magenta dye moiety as a function of development of a silver halide emulsion layer under alkaline conditions; (d) 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 (e) 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.