Processing of photographic light sensitive materials and apparat

Details Processing of photographic light sensitive materials and apparat Processing of photographic light sensitive materials and apparat

1998-03-09

1999-08-03

Rutledge, D.

Photography

Fluid-treating apparatus

Having fluid-circulating means

G03D 302

Patent

active

059336749

ABSTRACT:
A process for processing light sensitive photographic materials in which oxidation of replenisher solution in a tubing between replenisher and processing tanks is prevented comprises the steps of processing the light sensitive photographic material in a tank containing a processing solution; and supplying replenisher solution to the processing tank and causing the processing solution to be displaced from the processing tank. Replenisher solution which is supplied to the processing tank is conveyed in a tubing which is coaxial with a further tubing of larger diameter containing a solution of an oxygen scavenger such as a reducing agent which can be provided by displaced processing solution. The invention also provides for a processing apparatus for processing light sensitive photographic materials which comprises a processing tank for containing a processing solution with which the light sensitive photographic material is to be processed; a replenisher tank for holding replenisher solution; and a tubing connecting the processing and replenisher tanks for supplying replenisher solution from the replenisher tank to the processing tank. The tubing is coaxial with a further tubing of larger diameter for carrying a solution containing an oxygen scavenger.

REFERENCES:
patent: 4346981 (1982-08-01), Kaufmann
patent: 4466072 (1984-08-01), Kaufmann

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