Liquid ejection head

Details Liquid ejection head Liquid ejection head

2008-02-21

2010-06-01

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S065000

Reexamination Certificate

active

07726784

ABSTRACT:
A liquid ejection head according to one aspect of the invention comprises: a channel unit that comprises: a plurality of individual liquid channels each including a pressure chamber; and a first surface having a plurality of openings corresponding to a plurality of the pressure chambers; and a piezoelectric actuator unit having a second surface that is bonded to the first surface of the channel unit via an adhesive to cover the plurality of pressure chambers. One or more grooves are formed in the first surface of the channel unit to surround the plurality of pressure chambers. An outer edge portion of the second surface the piezoelectric actuator unit faces the groove. A supporting portion that faces the outer edge portion of the second surface of the piezoelectric actuator unit to support the piezoelectric actuator unit is provided in the groove.

REFERENCES:
patent: 6604817 (2003-08-01), Isono et al.
patent: 2002/0105567 (2002-08-01), Yamada et al.
patent: 2005/0036010 (2005-02-01), Terakura et al.
patent: 2006/0284940 (2006-12-01), Katayama
patent: 1506865 (2005-02-01), None
patent: 2001246744 (2001-09-01), None
patent: 2006-076128 (2006-03-01), None
patent: 2006-347123 (2006-12-01), None
Japanese Patent Office, Office Action issued in corresponding Japanese Application No. 2007-043919, dated Feb. 3, 2009.
European Patent Office, European Search Report for Related EP Application No. 08003198 dated May 29, 2008.

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