Radiation imagery chemistry: process – composition – or product th – Color imaging process – Stabilizing
Patent
1988-06-03
1990-05-08
Le, Hoa Van
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Stabilizing
430393, 430460, 430490, 430491, G03C 539, G03C 1100
Patent
active
049237829
ABSTRACT:
A stabilizing bath which provides reduced stain and enhanced dye stability for photographic color elements which are processed therein is comprised of a dye stabilizing agent, an alkanolamine, and a hydrolyzed polymaleic anhydride or water-soluble salt thereof. The stabilizing bath is used as a final processing bath which follows treatment of the element in a fixing or bleach-fixing bath containing a thiosulfate fixing agent. The alkanolamine functions to prevent the precipitation of sulfur resulting from carryover of the thiosulfate fixing agent into the stabilizing bath, while the hydrolyzed polymaleic anhydride or water-soluble salt thereof functions to avoid the formation of unwanted precipitates.
REFERENCES:
patent: 3810834 (1974-05-01), Jones et al.
patent: 4615971 (1986-10-01), Haseler
patent: 4786583 (1988-11-01), Schwartz
"Polyelectrolytes As Calcium Controlling Agents In Photographic Processing Solutions", Research Disclosure, No. 229, Item 22937, May 1983.
"Use of Copolymers Of Maleic Acid And Other Monomers in Photographic Processing Solutions", Research Disclosure, No. 253, Item 25332, May 1985.
Eastman Kodak Company
Le Hoa Van
Lorenzo Alfred P.
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