Deaeration of ink in an ink jet system

Recorders – Performance of multiple functions of steam and gas engines – Pressure responsive element

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Details

346140R, 55159, G01D 900, G01D15016, B01D 1900

Patent

active

047885564

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
patent: 4460904 (1984-07-01), Oszczakiewicz
patent: 4502055 (1985-02-01), Horike
patent: 4571599 (1986-02-01), Rezawka
patent: 4729773 (1988-03-01), Shirato

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