Fluid handling – Flow affected by fluid contact – energy field or coanda effect – Means to regulate or vary operation of device
Patent
1974-07-17
1976-11-02
Braun, Fred L.
Fluid handling
Flow affected by fluid contact, energy field or coanda effect
Means to regulate or vary operation of device
137 93, 354324, G03D 1300
Patent
active
039900886
ABSTRACT:
The chemical activity of the developer in a film processor is stabilized by a replenishment system which includes a controlled fluid supply arrangement operative to effect an initial replenishment based upon certain predetermined factors including the length or area of a sheet to be processed as detected at the processor input, an assumed minimum exposure present on each image-bearing sheet to be processed, and the customary degradation of developer activity resulting from oxidation effects as determined empirically. The initial replenishment is later supplemented, if necessary, by effecting additional replenishment following the processing of film sheets, based upon a determination of the actual image density and image area present in those sheets. Variations in developer activity, due to introduction of the initial and supplemental replenishment fluid increments, are minimized by providing a mixing tank in parallel with at least a portion of the main developing tank in the processor, to increase the effective volume of developer solution in the overall system.
REFERENCES:
patent: 3529529 (1970-09-01), Schumacher
patent: 3559555 (1971-02-01), Street
patent: 3712203 (1973-01-01), Kishi et al.
patent: 3787689 (1974-01-01), Fidelman
Braun Fred L.
Log Etronics Inc.
LandOfFree
System for controlling replenishment of developer solution in a does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for controlling replenishment of developer solution in a , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for controlling replenishment of developer solution in a will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1163074