Photographic color couplers and photographic materials containin

Details Photographic color couplers and photographic materials containin Photographic color couplers and photographic materials containin

1994-07-14

1995-05-02

Wright, Lee C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430387, G03C 736

Patent

active

054118484

ABSTRACT:
A photographic element, and coupler employed therein, comprises a photographic silver halide emulsion layer containing a yellow dye-forming coupler having a the general formula: ##STR1## wherein Z is a ballasted group which splits off on silver halide development which is of such size and configuration to render the coupler non-diffusible in photographic layers, prior to splitting off, and
R.sup.1 and R.sup.2 are each individually an alkyl or aryl group whose combined effect is to render the yellow dye formed on coupling sufficiently mobile to produce image smearing.

REFERENCES:
patent: 3674490 (1972-07-01), Matejec
patent: 3675891 (1973-10-01), Travis
patent: 4567135 (1986-01-01), Arakawa et al.
patent: 4705743 (1987-11-01), Mihayashi et al.
patent: 5340703 (1994-08-01), Masumi et al.

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