Back to results
US 5,691,118 AGranted
Color paper processing using two acidic stop solutions before and after bleaching
AssigneeEastman Kodak Company
InventorShirleyanne E. Haye
Life of this patent
Estimating the term…
Abstract
Low silver color photographic papers are processed with separate bleaching and fixing steps wherein the bleaching solution is a peroxide solution. Prior to and after the bleaching step, and before fixing, the color papers are treated with acidic solutions to reduce blue record Dmin.
Claims20
A method for photoprocessing comprising, in order:
- A) color developing an imagewise exposed color photographic paper comprising at least one predominantly silver chloride photographic emulsion, said paper having a total silver coverage of less than or equal to 1 g/m.sup.2,
- B) stopping color development by contacting said paper with a first acidic solution having a pH of less than or equal to 4,
- C) bleaching said paper with a peroxide bleaching composition comprising a peroxide bleaching agent, and chloride ions,
- D) contacting said bleached paper with a second acidic solution having a pH of less than or equal to 5, and
- E) fixing said paper.
2 more elements
Dependencies are inferred from the claim text.