Photographic elements containing magenta couplers and process fo

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

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430555, G03C 7384

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active

054118417

ABSTRACT:
Improved hue, speed of dye formation and reduced staining are provided by a photographic element comprising a light-sensitive silver halide layer having associated therewith a 1-phenyl-3-anilino-pyrazolo-5-one coupler comprising a ballasted parent and a coupling-off group and containing substituents on the 1-phenyl and 3-anilino rings of the parent having Hammett sigma values which together sum to at least 1.1, the coupler further having at the 4-position of the pyrazolone ring a coupling-off group comprising a phenylthio group containing a carbonamido substituent in the position para to the sulfur on the phenylthio ring with the substituents on the phenylthio ring selected such that the calculated log P of the thiophenol corresponding to the coupling-off group is at least 4. ##STR1##

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