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:
Oct. 26, 2010
Filed:
Sep. 27, 2007
Tsuyoshi Mita, Kanagawa-ken, JP;
Tsuyoshi Mita, Kanagawa-ken, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
The liquid ejection head includes: a liquid ejection port; a pressure chamber which has a recess part connected to the liquid ejection port; a lower electrode which is arranged on the pressure chamber; a piezoelectric body which has a planar face arranged on the lower electrode; and an upper electrode which is arranged on the piezoelectric body, wherein: a cross section of the recess part of the pressure chamber taken in parallel to the planar face of the piezoelectric body is oblong and has a breadth CWx in a breadthways direction and a length CWy in a lengthwise direction; the piezoelectric body has an active region having a breadth DWx in the breadthways direction of the cross section of the recess part of the pressure chamber and a length DWy in the lengthwise direction of the cross section of the recess part of the pressure chamber.