Silver halide photographic material and process utilizing blocke

Radiation imagery chemistry: process – composition – or product th – Color imaging process – Using identified radiation sensitive composition in the...

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430384, 430385, 430386, 430387, 430388, 430389, 430548, 430552, 430553, 430554, 430555, 430556, 430557, 430558, G03C 700

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active

043106188

ABSTRACT:
Novel dye-forming couplers have the structure: ##STR1## wherein: Z represents the atoms to complete, with the attached oxygen atom, the same or different 5-pyrazolone dye-forming coupler moiety, phenol dye-forming coupler moiety or naphthol dye-forming coupler moiety, the * in the ring completed by Z representing the coupling position;

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patent: 4157919 (1979-06-01), Lau

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