1992-08-20
1994-04-12
Ruthledge, D.
354324, G03D 308, G03D 302
Patent
active
053029950
ABSTRACT:
A wet photographic processing apparatus adapted for processing an imagewise exposed silver halide photographic material compsiring a support having thereon at least one light-sensitive silver halide emulsion layer, said processing comprising at least developing step followed by at least one of a washing step and a stabilizing step, said apparatus comprising: (i) a developing bath; (ii) at least one set of a plurality of washing baths in cascade connection to form countercurrent and/or a plurality of stabilizing baths in cascade connection to form countercurrent; (iii) means for filtering at least a portion of a washing and/or stabilizing solution drawn from a upstream bath among said plurality of baths, said filtering means including a reverse osmotic membrane apparatus filtering said washing and/or stabilizing solution to produce a filtrate; (iv) means for introducing the filtrate from said reverse osmotic membrane apparatus into a downstream bath among said plurality of baths; and (v) means, provided in said pipe, for shutting-off fluid flow between said upstream bath and said reverse osmotic membrane apparatus. The present apparatus prevents loss of processing solution and contamination of the washing baths upon suspension of operation of the processing apparatus.
REFERENCES:
patent: 4451132 (1984-05-01), Kishimoto
patent: 5019850 (1991-05-01), Ishikawa et al.
patent: 5040013 (1991-08-01), Kurokawa et al.
patent: 5109246 (1992-04-01), Yamamoto et al.
Fuji Photo Film Co. , Ltd.
Ruthledge D.
LandOfFree
Photographic developing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photographic developing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic developing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2102463