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:
Apr. 29, 2014
Filed:
Mar. 01, 2012
Hiroyuki Kushida, Kanagawa, JP;
Nobuaki Murochi, Shizuoka, JP;
Hiroyuki Kushida, Kanagawa, JP;
Nobuaki Murochi, Shizuoka, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
According to one embodiment, an ink jet head includes: a nozzle plate including plural nozzles; a piezoelectric element including plural pressure chambers corresponding to the nozzles and sidewalls provided adjacent to the pressure chambers and functioning as driving elements that press the pressure chambers to eject liquid from the nozzles; a substrate to which the piezoelectric element is bonded; a frame member placed on the substrate to surround the piezoelectric element; and electrodes for driving the piezoelectric element. The piezoelectric element includes slopes continuous to the upper end of the piezoelectric element and not in contact with the nozzle plate. The substrate has a surface layer formed on the surface thereof and includes recess continuous to the slopes in the surface layer. The electrodes are formed on the slopes and the recess.