Deaeration of ink in an ink jet system

Details Deaeration of ink in an ink jet system Deaeration of ink in an ink jet system

1988-11-15

1990-10-02

Reinhart, Mark J.

Recorders

Markers and/or driving means therefor

With ink supply to marker

55159, G01D 1516, B41J 201, B01D 1900

Patent

active

049610821

ABSTRACT:
In the particular embodiment of an ink deaerator described in the specification, an elongated ink path leading to an ink jet head is formed between two permeable membranes. The membranes are backed by air plenums which contain support members to hold the membranes in position. Reduced pressure is applied to the plenums to extract dissolved air from the ink in the ink path. Increased pressure can also be applied to the plenums to eject ink from the ink jet head for purging. Within the ink jet head ink is circulated convectively from the orifice to the deaerating path even when the jet is not jetting ink.

REFERENCES:
patent: 4301459 (1981-11-01), Isayama et al.
patent: 4460904 (1984-07-01), Oszczakiewicz et al.
patent: 4469495 (1984-09-01), Hiraizumi et al.
patent: 4502055 (1985-02-01), Horike et al.
patent: 4571599 (1986-02-01), Rezanka
patent: 4729773 (1988-03-01), Shirato et al.
patent: 4787921 (1988-11-01), Shibata

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