EP 0585792 B1 19991124 - Process of recycling spent photographic developer and recycled photographic developer
Title (en)
Process of recycling spent photographic developer and recycled photographic developer
Title (de)
Verfahren zur Rückführung eines gebrauchten photographischen Entwicklers und photographischer wiederverwendeter Entwickler
Title (fr)
Procédé pour le recyclage d'un développateur photographique usagé et un développateur photographique recyclé
Publication
Application
Priority
US 94134392 A 19920904
Abstract (en)
[origin: EP0585792A2] A process for recycling a hydroquinone-free black-and-white photographic developer composition comprises the steps of collecting the developer, optionally filtering the collected material, and reconstituting the developer, whereby the spent developer is brought back to substantially the activity of fresh developer having the same composition wherein the recycled developer can be used to process black-and-white photographic materials without adverse effects.
IPC 1-7
IPC 8 full level
G03C 5/00 (2006.01); G03C 5/30 (2006.01); G03C 5/31 (2006.01)
CPC (source: EP)
Citation (examination)
- EP 0530889 A1 19930310 - KODAK LTD [GB], et al
- EP 0573700 A1 19931215 - AGFA GEVAERT NV [BE]
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0585792 A2 19940309; EP 0585792 A3 19940810; EP 0585792 B1 19991124; AU 4607893 A 19940310; AU 666213 B2 19960201; CA 2105532 A1 19940305; DE 69327079 D1 19991230; DE 69327079 T2 20000907; JP H06161057 A 19940607
DOCDB simple family (application)
EP 93113548 A 19930825; AU 4607893 A 19930903; CA 2105532 A 19930903; DE 69327079 T 19930825; JP 21960093 A 19930903