Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2006-08-31
2009-06-09
Feggins, K. (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
07543918
ABSTRACT:
An ink-jet head includes a channel unit in which a plurality of pressure chambers are formed; and a piezoelectric actuator which includes a vibration plate, a piezoelectric layer formed on an upper surface of the vibration plate, and an electroconductive layer formed on an upper surface of the piezoelectric layer. On an upper surface of the piezoelectric actuator, there are formed outer grooves each extended along an area overlapping with the periphery of each of the pressure chambers, and inner grooves each extended along one of the outer grooves at a portion inside of one of the outer grooves. Further, recesses deeper than the thickness of the electroconductive layer is formed in the piezoelectric actuator at portions each located inside of the one of the inner grooves. Accordingly, it is possible to improve a drive efficiency of the piezoelectric actuator.
REFERENCES:
patent: 6808254 (2004-10-01), Sakaida et al.
patent: 6971738 (2005-12-01), Sugahara
patent: 6973703 (2005-12-01), Sakaida et al.
patent: 6994428 (2006-02-01), Ito
patent: 7387372 (2008-06-01), Ishikawa et al.
patent: 2003/0107622 (2003-06-01), Sugahara
patent: 2004/0218018 (2004-11-01), Sakaida et al.
patent: 2005/0185028 (2005-08-01), Sakaida et al.
patent: H01-204748 (1989-08-01), None
patent: 2004160966 (2004-06-01), None
patent: 2004166463 (2004-06-01), None
patent: 2004209874 (2004-07-01), None
Katayama Naoki
Sugahara Hiroto
Takahashi Yoshikazu
Baker & Botts L.L.P.
Brother Kogyo Kabushiki Kaisha
Feggins K.
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