Method and apparatus for filtering developing liquid in a photoc

Details Method and apparatus for filtering developing liquid in a photoc Method and apparatus for filtering developing liquid in a photoc

1978-08-21

1980-03-18

Braun, Fred L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

210348, 210455, 210496, 210510, G03G 1510

Patent

active

041936833

ABSTRACT:
A photocopy machine and method where working solution flows down from a transfer drum into a trough-type filter and is then filtered as it flows into the main portion of a tank for subsequent recirculation over the transfer drum. The filter trough is preferably formed from a foamed polyurethane plastic and removes undesirable dust particles from the working solution. The filter also collects and filters gelled solution.

REFERENCES:
patent: 3360131 (1967-12-01), Witkowski
patent: 3683852 (1972-08-01), Yamaguchi et al.
patent: 3704662 (1972-12-01), Johnson et al.
patent: 3722559 (1973-03-01), Hoffman
patent: 3733124 (1973-05-01), Tanaka et al.
patent: 3957368 (1976-05-01), Goshima et al.
patent: 3983837 (1976-10-01), Francis
patent: 3991709 (1976-11-01), Sato et al.
patent: 4081371 (1978-03-01), Yarwood et al.
patent: 4110029 (1978-08-01), Goshima et al.

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