Fluid purge apparatus and method for ink jet printer pen

Incremental printing of symbolic information – Ink jet – Ejector mechanism

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347 25, 347 22, 347 30, B41J 2165

Patent

active

057933898

ABSTRACT:
A service apparatus for servicing an ink jet pen having a housing defining an ink reservoir and including a print head connected to the housing in communication with the reservoir. The apparatus includes an elongated probe having first and second passages, a fluid supply conduit in communication with the first passage, a drain conduit in communication with the second passage, a fluid receptacle separate from the probe, and a vacuum source in communication with the receptacle. The apparatus may be operated by connecting a pen to the fluid conduit to provide fluid communication between the conduit and the reservoir, draining ink from the reservoir through the fluid conduit, generating a flow of rinse fluid into the reservoir, draining the rinse fluid from the reservoir; and expelling ink through the print head.

REFERENCES:
patent: 3076607 (1963-02-01), Cordier
patent: 4362572 (1982-12-01), Wallace
patent: 5125576 (1992-06-01), Ziegenbein
patent: 5199470 (1993-04-01), Goldman
patent: 5329294 (1994-07-01), Ontawar et al.
patent: 5621445 (1997-04-01), Fong et al.
"Development of the HP DeskJet 1200C Print Cartridge Platform", Feb. 1994, Hewlett-Packard Journal, pp. 46-54.

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