Non-impact spark jet print head

Details Non-impact spark jet print head Non-impact spark jet print head

1985-12-02

1987-03-03

Hartary, Joseph W.

Recorders

Markers and/or driving means therefor

With ink supply to marker

400126, G01D 1518

Patent

active

046479490

ABSTRACT:
A housing defines a reservoir containing a flowable, electrically conductive ink, which may be a liquid or powder. The housing includes a printing surface in the form of a non-conductive face plate having a plurality of spaced orifices. A plurality of electrically isolated conductive electrodes are associated with the face plate, and located adjacent the various orifices. An impeller, situated behind the face plate, is rotated to distribute the ink to the orifices. A spring-loaded piston member maintains the ink in the reservoir under pressure. An electrical source is connected between the ink and selected electrodes to cause the ink to be ejected through the orifices adjacent the selected electrodes and onto a paper strip proximate the face plate to imprint dots thereon.

REFERENCES:
patent: 2173743 (1939-09-01), Wise
patent: 4238807 (1980-12-01), Bovio
patent: 4332487 (1982-06-01), Bovio
patent: 4349829 (1982-09-01), Bovio
patent: 4432003 (1984-02-01), Barbero

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