Apparatus for filtering solution

Details Apparatus for filtering solution Apparatus for filtering solution

1994-07-08

1996-02-06

Dawson, Robert A.

Liquid purification or separation

Structural installation

Closed circulating system

210196, 2102421, 210488, 2104935, B01D 3505, B01D 3600

Patent

active

054893798

ABSTRACT:
The disclosure describes an apparatus for treating fountain solution which comprises a recirculation assembly and a microporous filter assembly. The recirculation assembly disconnected between the outlet and inlet of a fountain solution tray of a printing system. The recirculation assembly includes a fountain solution sump and a return line which extends from the outlet of the fountain solution tray to the sump. The microporous filter assembly is positioned in the sump or in the return line and includes a filter position across a fountain solution flow path and having a removal rating of at least about 99.98% at about 20 microns or finer.

REFERENCES:
patent: 4009657 (1977-03-01), Bonanno et al.
patent: 4574695 (1986-03-01), Ryan
patent: 4608158 (1986-08-01), Ghisalberti et al.
patent: 4615800 (1986-10-01), Stifelman et al.
patent: 4671869 (1987-06-01), Hara et al.
patent: 5152890 (1992-10-01), Linnersten
patent: 5252207 (1993-10-01), Miller et al.
Baldwin Circulating Water Levels; Filters and Filter Elements.
Pall Process Filtration Company/Industrial Processing Group, "Lithographic Printing-Fountain Solution" (1993, 1994), 2 pages.

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