Apparatus for controlling addition of replenishment solution to

Details Apparatus for controlling addition of replenishment solution to Apparatus for controlling addition of replenishment solution to

1976-07-06

1979-10-23

Cohan, Alan

Fluid handling

Systems

Programmer or timer

354297, 222 70, G05D 300

Patent

active

RE0301230

ABSTRACT:
An apparatus for controlling make-up and addition of replenishment solution to a photographic processor, having one or more reservoirs and metering pumps for selecting make-up solution concentrates, and electronic controls for determining the volume of replenishment solution. Replenishment can be accomplished taking into consideration all of the operating variables such as film size, replenishment rate, and percent exposure, as well as the cumulative effect of any additions and aerial oxidation of the solution while not in use.

REFERENCES:
patent: 3334566 (1967-08-01), Friedel
patent: 3529529 (1970-09-01), Schumacher
patent: 3561344 (1971-02-01), Frutiger et al.

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