Ink supply device for ink jet printer

Details Ink supply device for ink jet printer Ink supply device for ink jet printer

1989-03-08

1990-06-05

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

G01D 1516, B41J 304

Patent

active

049318144

ABSTRACT:
An ink supply device for an ink jet printer includes a tank for storing ink and transports the ink from the tank to a nozzle at normal pressure by utilizing capillary effect. The tank is provided with an opening which connects the interior of the tank with the outside air but a one-way valve is at the opening such that air can move into but not out of the tank therethrough. A separate device for introducing air into the tank to increase the pressure inside the tank is provided such that air particles accumulating in the passageway between the tank and the nozzle can be removed easily as ink is pushed out of the tank.

REFERENCES:
patent: 4156244 (1979-05-01), Erikson
patent: 4253103 (1981-02-01), Heinzl
patent: 4376283 (1983-03-01), Bower
patent: 4419678 (1983-12-01), Kasugayama
patent: 4511906 (1985-04-01), Hara
patent: 4550324 (1985-10-01), Tamaru
patent: 4589000 (1986-05-01), Koto
Greene et al.; Constant-Pressure Head Ink Supply, IBM TDB, vol. 15, No. 9, Feb. 1973, p. 2898.

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