Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2005-09-20
2005-09-20
Meier, Stephen D. (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
06945637
ABSTRACT:
A vibration plate forms a part of each of pressure chambers communicated with a nozzle orifice from which a liquid droplet is ejected. A plurality of piezoelectric vibrators include a drive vibrator and a dummy vibrator which are disposed on the vibration plate such that at least the drive vibrator opposes to each of the pressure chambers. The drive vibrator is provided with a drive electrode, a first piezoelectric layer laminated on the drive electrode, and a first common electrode laminated on the first piezoelectric layer. The dummy vibrator is provided with a connection electrode electrically connected to the first common electrode, a second piezoelectric layer laminated on the connection electrode, and a second common electrode laminated on the second piezoelectric layer and electrically connected to the first common electrode. A first terminal is electrically connected to the drive electrode to supply a drive signal thereto. A second terminal is electrically connected to the connection electrode to supply a common signal thereto.
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Do An H.
Meier Stephen D.
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