Liquid ejection head and manufacturing method thereof

Details Liquid ejection head and manufacturing method thereof Liquid ejection head and manufacturing method thereof

2005-09-29

2008-11-11

Meier, Stephen D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S071000

Reexamination Certificate

active

07448732

ABSTRACT:
The liquid ejection head includes: a plurality of ejection ports which eject liquid; a plurality of pressure chambers which respectively communicate with the ejection ports; a plurality of piezoelectric elements which respectively deform the plurality of pressure chambers and are provided to faces of the pressure chambers opposite to faces on which the ejection ports are formed; a common liquid chamber which supplies the liquid to the plurality of pressure chambers and is formed on a side of the piezoelectric element opposite to the pressure chamber; a plurality of through-hole wires which stand substantially perpendicular to the faces on which the piezoelectric elements are mounted, the through-hole wires running through a partition wall of the common liquid chamber and being electrically connected to the piezoelectric elements in connecting portions, respectively; and a spherical member which has a conductive coating and is disposed in each of the connecting portions, wherein a recess is formed on a side of the piezoelectric element facing the through-hole wire in each of the connecting portions.

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patent: 2003/0206218 (2003-11-01), Miyata et al.
patent: 2000-289201 (2000-10-01), None
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patent: 2003-136721 (2003-05-01), None
patent: WO-01/30577 (2001-05-01), None

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