The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 22, 1992
Filed:
Sep. 20, 1991
Applicant:
Inventors:
Gustav Tappe, Leverkusen, DE;
Ralf Wichmann, Cologne, DE;
Heinz Meckl, Bergisch Gladbach, DE;
Edgar Draber, Cologne, DE;
Assignee:
Agfa Gevaert Aktiengesellschaft, Leverkusen Bermany, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430393 ; 430430 ; 430460 ; 430461 ;
Abstract
The process for bleach fixing an exposed and developed color photographic material whose silver halide emulsion layers contain silver chlorobromide emulsions having a silver bromide content of from 0.3 to 2.0 mol%, in which the bleach fixing bath (1) contains, as bleaching agent, an iron(III) complex at least 50 mol% of whose complex former corresponds to the following formula ##STR1## (2) is adjusted to a pH of x where 7.0>.times.>4.5 and (3) contains a thiosulphate is distinguished by a powerful bleaching action and great environmental compatibility.