Title: Stabilized bleach-fixing baths

Abstract: A bleach-fix composition for use in photographic processing comprising a polycarboxylic acid bleaching agent, a thiosulfate fixing agent, and a carbonyl bisulfite adduct. The carbonyl bisulfite adduct functions as a stabilizing agent which retards sulfurization of the bleach-fix composition and thereby prolongs its useful life.

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Inventors: Borton, Gary L. (Penfield, NY, US)
Goff, Cobb S. (Rochester, NY, US)
Malloy, Richard J. (Webster, NY, US)

Application Number: 389063
Filing Date: 1973-08-16
Publication_date: 1977-07-05
Assignee: Eastman Kodak Company (Rochester, NY)
Primary Class(es): 430/460 430/393, 430/936
Other Classes:
US Patent Ref:

3304179	Feb, 1967	Field et al.	96/61.
3615513	Oct, 1971	Haisl et al.	96/61.
3617283	Nov, 1971	Ohi et al.	96/60.
3667950	Jun, 1972	Amano et al.	96/60.
3667952	Jun, 1972	Fassbender	96/22.
3706561	Dec, 1972	Mowrey et al.	96/60.
3767401	Oct, 1973	Newman et al.	96/60.
3879202	Apr, 1975	Yamaguchi et al.	96/22.

Other Refs:
Primary Examiner: Kelley, Mary F.
Assistant Examiner:
Attorney: Lorenzo; A. P.