Piezoelectric ink droplet ejecting device

Details Piezoelectric ink droplet ejecting device Piezoelectric ink droplet ejecting device

1992-03-17

1993-09-14

Stephan, Steven L.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

346140R, 310333, H01L 4104, G01D 1516

Patent

active

052452441

ABSTRACT:
A piezoelectric ink droplet ejecting device drivable with a low voltage, simple in structure, less costly to manufacture and capable of producing printed data with high resolution. A piezoelectric ink droplet ejecting device has a plurality of ink ejectors each composed of a piezoelectric transducer for varying the volume of an ink passage to eject ink out of the ink passage. A single piezoelectric ceramic panel which is polarized in a thickness direction has a plurality of through holes parallel to the polarized direction. The through holes serve as ink passages. When a driving electric field is applied in a direction perpendicular to the polarized direction, the piezoelectric ceramic panel is elastically deformed under thickness shear effect, thus varying the volume of the ink passages to eject ink droplets therefrom.

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