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:
Aug. 16, 2016
Filed:
Jul. 02, 2015
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Shuhei Yokoyama, Shizuoka, JP;
Ryutaro Kusunoki, Shizuoka, JP;
Chiaki Tanuma, Tokyo, JP;
Ryuichi Arai, Shizuoka, JP;
TOSHIBA TEC KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An ink jet head includes: a vibration plates having a plurality of openings of a first diameter; ink pressure chambers, each arranged on one surface of the corresponding vibration plate; first electrodes, each formed on the other surface of the vibration plate; a plurality of piezoelectric layers, each portion of which is formed on a first electrode such that it surrounds the opening and that, when a driving voltage is applied, deforms the vibration plate to expand or contract the ink pressure chamber; second electrodes formed on each piezoelectric layer; a protective layer which is at least formed on the vibration plate and the second electrode and has a nozzle for ejecting the ink having a diameter smaller than the first diameter extending therethrough and through the opening; and an ink-feeding mechanism that feeds the ink into the ink pressure chambers.