| 摘要 |
Photographic elements, diffusion transfer assemblages, coordination complexes and processes are described which employ a novel nondiffusible hydrazone compound capable of releasing at least one diffusible yellow dye or dye precursor thereof having the formula: <IMAGE> wherein: (a) Z1 and Z2 each independently represents the atoms necessary to complete a 5- or 6-membered aromatic heterocyclic ring; (b) CAR represents a ballasted carrier moiety capable of releasing the diffusible yellow dye moiety or precursor thereof as a function of development; (c) R represents hydrogen, an alkyl or substituted alkyl group of from 1 to about 12 carbon atoms, an aryl or substituted aryl group of from about 6 to about 12 carbon atoms, a substituted or unsubstituted 5- or 6-membered aromatic heterocyclic ring, or CAR, and (d) n is 0, 1 or 2, with the proviso that when n is 0, then R is CAR.
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