Inkjet recording head

Details Inkjet recording head Inkjet recording head

2005-06-08

2009-08-25

Meier, Stephen D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S071000

Reexamination Certificate

active

07578579

ABSTRACT:
An inkjet recording head, including a channel unit which has, along a reference plane, a plurality of pressure chambers communicating with a plurality of nozzles, respectively, each of which ejects a droplet of ink; and a piezoelectric actuator which changes a volume of an arbitrary one of the pressure chambers so that a corresponding one of the nozzles ejects the droplet of ink. The piezoelectric actuator includes a plurality of individual electrodes corresponding to the plurality of pressure chambers, respectively, a common electrode which is opposed to each of the individual electrodes, a piezoelectric layer which is interposed between the individual electrodes and the common electrode, and a plurality of electric wires which are connected to the plurality of individual electrodes, respectively, so as to supply respective drive voltages to the individual electrodes. A portion of at least one of the electric wires that is connected to at least one first individual electrode of the individual electrodes that corresponds to at least one first pressure chamber of the pressure chambers overlaps, as seen in a direction perpendicular to the reference plane, a portion of at least one second pressure chamber of the pressure chambers that differs from the at least one first pressure chamber.

REFERENCES:
patent: 6070972 (2000-06-01), Thiel
patent: 6290333 (2001-09-01), Wade et al.
patent: 6471342 (2002-10-01), Horio et al.
patent: 6497477 (2002-12-01), Nakamura et al.
patent: 2002/0080215 (2002-06-01), Sakaida et al.
patent: 11-314366 (1999-11-01), None
patent: 2000351208 (2000-12-01), None
patent: 3267937 (2002-01-01), None
patent: 2003-159798 (2003-06-01), None

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