Photographic recording material employing a nondiffusible yellow dye-releasing compound.

摘要

A photographic recording material is described which employs a novel nondiffusible premetallized yellow, redox-dye-releasing (RDR) compound which, as a function of development of a silver halide emulsion layer, releases a diffusible yellow dye or precursor thereof. The compound has the structural formula:
<CHEM>
wherein:
(a) X represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic fused ring;
(b) Z represents alkyl, substituted alkyl, aryl or substituted aryl;
(c) R represents CN or J-L;
(d) J represents a bivalent
<CHEM>
(e) L represents alkyl, substituted alkyl or substituted aryl, or can be taken together with Z to complete a carbonyl-containing 5- or 6-membered heterocyclic or carbocyclic ring;
(f) Z<1> represents the same groups as Z;
(g) each CAR independently represents a ballasted carrier moiety capable of releasing the diffusible yellow dye moiety or precursor thereof as a function of development of a silver halide emulsion layer under alkaline conditions;
(h) each n is 0 or 1, with the proviso that at least one n is 1;
(i) Lig is a monoanionic tridentate ligand; and
(j) Me is a polyvalent hexacoordinate metal ion.