The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 11, 2008
Filed:
Sep. 29, 2005
Hisamitsu Hori, Kanagawa, JP;
Hisamitsu Hori, Kanagawa, JP;
Fujifilm Corporation, Tokyo, JP;
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.