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:
Jan. 01, 2002
Filed:
Jun. 02, 1999
Kohei Kitahara, Nagano, JP;
Toshiki Usui, Nagano, JP;
Tomoaki Abe, Nagano, JP;
Keiichi Mukaiyama, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An ink jet print head having a vibrating plate, a chamber element with plural ink pressure chambers, piezoelectric vibrating elements for vibrating the vibrating plate to expand and contract the ink pressure chambers, drive electrodes contacting one surface of each vibrating element, and a common electrode contacting another surface of each vibrating element, wherein the common electrode is connected to a lead electrode at a region remote from the vibrating elements and the drive electrodes. Also, an ink jet print head in which a central portion of a piezoelectric vibrating element is thicker than its peripheral portion, so that a vibrating plate is bent towards an interior of an ink pressure chamber in an inoperative condition of the piezoelectric vibrating element.