Inkjet head

Details Inkjet head Inkjet head

2005-09-26

2008-11-25

Do, An H (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

07455394

ABSTRACT:
An inkjet head has: a channel unit having a plurality of nozzles and a plurality of pressure chambers respectively communicating with the nozzles; and an actuator unit on the channel unit and having a piezoelectric sheet, a plurality of individual electrodes respectively arranged to positionally correspond to the pressure chambers respectively and a common electrode sandwiching the piezoelectric sheet together with the plurality of individual electrodes. The actuator unit has a thickness of 20 μm to 100 μm and a surface roughness of the end face of the actuator unit including an intersection with channel unit and the actuator unit is 0.15 μm to 0.5 μm, and at least part of the end face is sealed by a resin film.

REFERENCES:
patent: 6866366 (2005-03-01), Sasaki et al.
patent: 7244389 (2007-07-01), Iwashita et al.
patent: 2003/0156167 (2003-08-01), Sakaida et al.
patent: 2004/0104975 (2004-06-01), Furuhata
patent: 2004/0218018 (2004-11-01), Sakaida et al.
patent: 1502469 (2004-06-01), None
patent: 6-106724 (1994-04-01), None
patent: 2002-248761 (2002-09-01), None
patent: 2003-341056 (2003-12-01), None
patent: 2004-160967 (2004-06-01), None
Notification of First Office Action dated Dec. 7, 2007 in Chinese Application No. 2005-10108773.2 and English translation thereof.

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