Self purging processing liquid applicator

Details Self purging processing liquid applicator Self purging processing liquid applicator

1984-11-28

1986-08-26

Mathews, A. A.

354324, G03D 506

Patent

active

046079297

ABSTRACT:
A photographic processing liquid applicator having a reservoir for containing a supply of alkaline processing liquid. The upper portion of the reservoir has an egress while a lower portion of the reservoir is provided with an ingress which is in communication with a container of processing liquid. Rotatably mounted within the reservoir is a roller for applying a coating of the processing liquid to a length of sheet material. During each coating operation, a supply of processing liquid greater than that required to coat the sheet material is added to the liquid already in the reservoir, via the ingress, thus causing its level to rise above the egress. Processing liquid is thus skimmed or drained from the surface of the liquid, which liquid would have been most exposed to the adverse affects of the oxygen in the atmosphere.

REFERENCES:
patent: 2520641 (1950-08-01), Land
patent: 3282695 (1966-11-01), Narodny
patent: 3307468 (1967-03-01), Briber
patent: 3623417 (1971-11-01), Eloranta et al.
patent: 4187023 (1980-02-01), Schausberger et al.
patent: 4324479 (1982-04-01), Sachs
patent: 4429982 (1984-02-01), Martino et al.

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