Ink jet writing head

Details Ink jet writing head Ink jet writing head

1994-10-04

1997-02-11

Hartary, Joseph W.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

B41J 204

Patent

active

056025750

ABSTRACT:
An ink chamber (2) connected to an ink pressure source is arranged in an ink jet printing head (1). Several closure elements (7), each of which closes an ink jet nozzle (5), are arranged in the ink chamber (2). Each closure element (7) is connected to a drive device via a tie rod (8). Each tie rod (8) moves out of the ink chamber (2) through an actuating opening (9). A tie rod seal arranged at each actuating opening (9) consists of a slim, conical frustrum-shaped sealing sleeve (12) which can be elastically deformed in the axial direction, the wider end of which is sealingly connected to the edge of the actuating opening (9) and the narrower end of which sealingly surrounds the tie rod (8). When the tie rod (8) moves axially, the sealing sleeve (12) is only deformed axially.

REFERENCES:
patent: 2747834 (1956-05-01), Meusy
patent: 2755671 (1956-07-01), Delany
patent: 3306570 (1967-02-01), Cooksley
patent: 3322142 (1967-05-01), Baumann
patent: 4203554 (1980-05-01), Zimmer et al.
patent: 4576111 (1986-03-01), Slomianny
patent: 4792817 (1988-12-01), Barney
patent: 4809017 (1989-02-01), Fost
Article: IBM Technical Disclosure Bulletin (vol. 19, No. 9/Feb. 1977) "Drop-On-Demand Ink Jet Printer", J. H. Meier and J. W. Raider.

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