Ink-jet head

Details Ink-jet head Ink-jet head

1997-11-18

2000-03-21

Pendegrass, Joan

Incremental printing of symbolic information

Ink jet

Ejector mechanism

347 72, B41J 2045

Patent

active

060394404

ABSTRACT:
An ink-jet head comprises: an insulating base (10); a plurality of juxtaposed multilayer piezoelectric elements (20) each formed by alternately stacking conductive members and piezoelectric plates polarized in the direction of the thickness and having a lowermost layer (25) and an uppermost layer (26) which are nondriven layers which are not distorted even when voltage is applied thereto; an elastically bendable oscillation plate (30); and a flow passage plate (40) provided with a plurality of ink outlets(43) at the front end thereof, and a plurality of juxtaposed ink chambers (41) connected to the ink outlets (43). The lowermost layers (25) of the multilayer piezoelectric elements (20) are bonded to the upper surface of the base (10), and the oscillation plate (30) is bonded to the uppermost layers (26) of the multilayer piezoelectric elements (20). The flow passage plate (40) is bonded to the upper surface of the oscillation plate (30) with the ink chambers (41) arranged in the direction of distortion of the multilayer piezoelectric elements (20). A front member (50) is bonded to the front end surfaces of the multilayer piezoelectric elements (20) and a front end portion of the oscillation plate (30).

REFERENCES:
patent: 5128694 (1992-07-01), Kanayama
patent: 5144342 (1992-09-01), Kubota

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