Page-wide piezoelectric ink jet print engine with circumferentia

Details Page-wide piezoelectric ink jet print engine with circumferentia Page-wide piezoelectric ink jet print engine with circumferentia

1994-09-30

1998-06-16

Reinhart, Mark J.

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 68, 347 72, B41J 2045

Patent

active

057678782

ABSTRACT:
A page wide piezoelectric ink jet print engine and a method of manufacturing the same. The page wide ink jet print engine includes lower and upper body parts, each formed from piezoelectric material and having a plurality of generally parallel, spaced projections. Lower side surfaces of the projections of the lower body part are conductively mounted to corresponding bottom side surfaces of the projections of the upper body part to define a plurality of generally parallel, axially extending ink-carrying channels from which ink may be ejected. The lower and upper body parts are then circumferentially poled such that, for the lower body part, first and second polarization fields respectively extend between the top side surface of each one of the projections and top side surfaces of first and second projections adjacent thereto and, for the upper body part first and second polarization fields respectively extend between the bottom side surface of each one of the projections and bottom side surfaces of first and second projections adjacent thereto. By applying voltage to selective ones of the projections, the channels may be selectively expanded to draw ink from an associated ink delivery system and compressed to cause the ejection of a droplet of ink therefrom.

REFERENCES:
patent: 4536097 (1985-08-01), Nilsson
patent: 4879568 (1989-11-01), Bartky
patent: 4887100 (1989-12-01), Michaelis et al.
patent: 5016028 (1991-05-01), Temple
patent: 5227813 (1993-07-01), Pies et al.
patent: 5235352 (1993-08-01), Pies et al.
patent: 5365645 (1994-11-01), Walker et al.
patent: 5373314 (1994-12-01), Everett et al.
patent: 5400064 (1995-03-01), Pies et al.

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