Photographic elements containing scavengers for oxidized develop

Details Photographic elements containing scavengers for oxidized develop Photographic elements containing scavengers for oxidized develop

1995-03-01

1996-08-06

Letscher, Geraldine

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Two or more radiation-sensitive layers containing other than...

430264, 430598, 430551, 430486, 430490, G03C 146

Patent

active

055432778

ABSTRACT:
An improved photographic element comprises a support bearing at least-one silver halide emulsion layer having associated therewith a hydrazide compound that functions as a scavenger for oxidized developing agent. The hydrazide compound comprises at least one polyhydroxy aromatic nucleus or a precursor thereof and at least one moiety containing an ##STR1## group which is bonded to a ring carbon atom of the polyhydroxy aromatic nucleus or precursor thereof through a linking group. The linking group can be an oxy, thio, sulfinyl, sulfonyl or alkylene group or it can be a carbonyl group when the polyhydroxy aromatic nucleus comprises at least three hydroxyl groups.

REFERENCES:
patent: 4923787 (1990-05-01), Harder
patent: 5230992 (1993-07-01), Miyahashi et al.
patent: 5262274 (1993-11-01), Katoh

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