Piezoelectric actuator using passivation film or interlayer insu

Incremental printing of symbolic information – Ink jet – Ejector mechanism

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Details

310328, 310331, 310365, B41J 2045

Patent

active

061426148

ABSTRACT:
Lower electrodes are disposed independently of each other for respective ink cavities through a silicon oxide film on a silicon substrate. PZT films and upper electrodes are disposed on the respective lower electrodes, and then an interlayer insulating film or a passivation film is disposed on top of the whole layer.

REFERENCES:
patent: 4349762 (1982-09-01), Kitamura et al.
patent: 4456850 (1984-06-01), Inoue et al.
patent: 5495137 (1996-02-01), Park et al.
patent: 5719607 (1998-02-01), Hasegawa et al.
patent: 5761783 (1998-06-01), Osawa et al.

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