Ink supply for pressurized ink jet

Details Ink supply for pressurized ink jet Ink supply for pressurized ink jet

1976-06-01

1977-08-16

Miller, Jr., George H.

Recorders

Performance of multiple functions of steam and gas engines

Pressure responsive element

346 75, 346140R, G01D 1518

Patent

active

040429377

ABSTRACT:
Ink supply system and sequencing for purge, startup, operation, and shutoff of pressurized ink jet systems. Employing an ink jet head having an inlet, startup is accomplished by filling the head with ink, closing an inlet valve, building pressure behind the valve to a level significantly greater than required for operation, and opening the valve. The system includes an inlet valve connecting a pump from a reservoir to the ink jet head, and an outlet valve connecting an outlet from the head to the reservoir and a vacuum source. At shutoff, the inlet valve is closed with the outlet valve open to create a negative pressure in the head.

REFERENCES:
patent: 3661304 (1972-05-01), Martinez et al.
patent: 3852773 (1974-12-01), Sicking et al.
patent: 3891121 (1975-06-01), Stoneburner
patent: 3950761 (1976-04-01), Kashio
patent: 3970222 (1976-07-01), Duffield
patent: 3974508 (1976-08-01), Blumenthal
Jensen, D. F. et al; High Speed Valve for an Ink Jet Printer, IBM Tech. Disc. Bulletin, vol. 18, No. 5, Oct. 1975, pp. 1345-1346.

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