Odorless photographic bleaching composition and color photographic processing
AssigneeEastman Kodak Company
InventorsShirleyanne E. Haye, Janet M. Huston, Eric R. Schmittou, Therese M. Feller
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Abstract
A photographic bleaching composition has reduced odor and acceptable storage stability. It comprises an iron-ligand complex bleaching agent, a rehalogenating agent, and a phthalic acid or salt thereof. This bleaching composition can be used in various photographic processing protocols to provide color images from color photographic silver halide materials, especially photographic color papers. The bleaching step can also be preceded by an acidic stop that also includes a phthalic acid or salt thereof.
Claims15
A method for providing a color photographic image comprising contacting a color developed color photographic silver halide material with an acidic stop solution comprising at least 0.01 mol/l of a phthalic acid or a salt thereof, followed by contacting with a photographic bleaching composition that has a pH of from about 2 to about 9 when in aqueous form and comprises:
- at least 0.01 mol/l of a ferric-ligand bleaching agent,
- at least 0.01 mol/l of a rehabogenating agent, and
- at least 0.01 mol/l of a phthalic acid or a salt thereof.
A method for providing a color photographic image comprising:
- A) color developing an imagewise exposed color photographic silver halide material using a color developing composition,
- B) contacting said color photographic silver halide material with an acidic stop solution comprising at least 0.01 mol/l of a phthalic acid or a salt thereof,
- C) bleaching said color photographic silver halide material with a photographic bleaching composition having a pH of from about 2 to about 9 when in aqueous form and comprising:
- at least 0.01 mol/l of a ferric-ligand bleaching agent,
- at least 0.01 mol/l of a rehalogenating agent, and
- at least 0.01 mol/l of a phthalic acid or a salt thereof.
Dependencies are inferred from the claim text.