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:
Apr. 02, 1996
Filed:
Jul. 22, 1994
Applicant:
Inventors:
Sylvia Adae-Amoakoh, Binghamton, NY (US);
Bruce M Resnick, Vestal, NY (US);
Assignee:
International Paper Company, Purchase, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ;
U.S. Cl.
CPC ...
430492 ; 430435 ; 430440 ; 430441 ; 430480 ; 430483 ; 430486 ; 430487 ; 430489 ; 430490 ; 430491 ;
Abstract
Photographic developing compositions are provided that are free of dihydroxybenzene developing agents and are used in the processing of photographic elements. The developing compositions have a pH in the range of from 10.1 to 10.9 and comprise at least 0.17 moles per liter of an ascorbic acid developing agent, 0.3 to 0.5 moles per liter of a sulfite and 0.2 to 0.4 moles per liter of a carbonate buffer. Also provided is an ecologically advantageous method for processing photographic elements which utilizes the non-toxic developing compositions.