Title: Process for the regeneration of photographic bleach-fix baths

Abstract: Photographic bleach-fix baths containing iron-III-complexes of aminopolyacetic acids as oxidizing agents are rejuvenated by reducing the iron-III-complexes with a reducing agent other the iron and thereafter are desilvered by treatment with iron.

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Inventors: Meckl, Heinz (Schildgen, DT)
Haseler, Helmut (Leverkusen, DT)
Seiler, Adolf (Hitdorf, DT)

Application Number: 606722
Filing Date: 1975-08-21
Publication_date: 1977-07-26
Assignee: AGFA-Gevaert Aktiengesellschaft (Leverkusen, DT)
Primary Class(es): 430/400 75/713
Other Classes:
US Patent Ref:

1448475	Mar, 1923	Weisberg	75/118.
1624172	Apr, 1927	Levy	75/109.
2503104	Apr, 1950	Farber	75/118.
3082079	Mar, 1963	Bulloch et al.	75/118.
3700450	Oct, 1972	Cooley	96/60.
3767401	Oct, 1973	Newman et al.	96/60.
3832453	Aug, 1974	Slovonsky et al.	96/60.

Other Refs: 777,6351,131,096

Jun, 1957	UK
Oct, 1968	UK

Primary Examiner: Kelley, Mary F.
Assistant Examiner:
Attorney: Connolly and Hutz