Inkjet head having piezoelectric actuator for restrictor,...

Details Inkjet head having piezoelectric actuator for restrictor,... Inkjet head having piezoelectric actuator for restrictor,...

2007-06-05

2011-11-08

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

08052253

ABSTRACT:
A piezoelectric inkjet head having piezoelectric actuators for restrictors includes a flow channel plate including an ink inlet through which ink enters, a plurality of pressure chambers into which ink to be ejected is filled, a manifold which is a path to receive ink from the ink inlet and to supply the received ink to the pressure chambers, a plurality of restrictors that connect the manifold to the pressure chambers, and a plurality of nozzles to eject ink from the pressure chambers to an outside thereof. The piezoelectric inkjet head also includes a plurality of first piezoelectric actuators formed on the flow channel plate corresponding to positions of the pressure chambers to provide a driving force to each of the pressure chambers to eject ink to the outside. The piezoelectric inkjet head also includes a plurality of second piezoelectric actuators formed on the flow channel plate corresponding to positions of the restrictors to change cross-sectional areas of the restrictors.

REFERENCES:
patent: 7364275 (2008-04-01), Lim et al.
patent: 2007/0195134 (2007-08-01), Lee et al.
patent: 2007/0216735 (2007-09-01), Kobayashi et al.
patent: 2008/0084458 (2008-04-01), Sugahara

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