Ink jet printing apparatus

Details Ink jet printing apparatus Ink jet printing apparatus

1984-08-13

1986-04-29

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1516

Patent

active

045860580

ABSTRACT:
An ink jet printing apparatus capable of removing bubbles introduced into ink which is routed from an ink supply cartridge to a plurality of nozzles. A head holder adapted to support a head, which has the nozzles, is formed with an ink supply path for delivering ink from the ink supply cartridge to the nozzles. The ink supply path branches into an upwardly extending passageway and a downwardly extending passageway. The ink is supplied to the nozzles by way of the downward passageway. A check valve is positioned in the upward passageway for trapping bubbles entrained by the ink. The bubbles trapped by the check valve are discharged by a suction pump.

REFERENCES:
patent: 3708798 (1973-01-01), Hildenbrand
patent: 3805276 (1974-04-01), Ishii
patent: 4126868 (1978-11-01), Kirner
patent: 4301459 (1981-11-01), Isayama
patent: 4394669 (1983-07-01), Ozawa

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