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. 11, 2016
Filed:
Jul. 15, 2014
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-Shi, Aichi-Ken, JP;
Abstract
A piezoelectric actuator includes one piezoelectric layer, a common electrode disposed on the lower surface of the piezoelectric layer and individual electrodes disposed on the upper surface of the piezoelectric layer. In the piezoelectric layer, a plurality of metal patterns arranged at regular intervals in the conveyance direction and in a direction orthogonal to the conveyance direction and overlapping with pressure chambers are provided substantially at the central part in the direction of the thickness. The metal patterns are not electrically continuous with each other and not electrically continuous with other parts. The metal patterns situated outermost in the conveyance direction are disposed so as to cross the edge of the pressure chamber. Some metal patterns overlap with the individual electrode and the other metal patterns do not overlap with the individual electrode.