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:
Jul. 15, 2014
Filed:
Feb. 03, 2012
Masaki Kato, Tokyo, JP;
Kiyoshi Yamaguchi, Kanagawa, JP;
Takahiko Kuroda, Hyogo, JP;
Satoshi Mizukami, Kanagawa, JP;
Masaki Kato, Tokyo, JP;
Kiyoshi Yamaguchi, Kanagawa, JP;
Takahiko Kuroda, Hyogo, JP;
Satoshi Mizukami, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Disclosed is an inkjet head that includes individual liquid chambers having liquid droplet discharging holes; an oscillation plate; piezoelectric elements formed by laminating a lower electrode, a piezoelectric material, and upper electrodes on the oscillation plate, wherein the lower electrode is a common electrode and the upper electrode is an individual electrode; a common electrode wiring connected to the lower electrode; and individual electrode wirings connected to the corresponding upper electrodes of the piezoelectric elements, wherein driving signals are individually input to the corresponding individual electrode wirings. The inkjet head further includes an upper layer insulator film; an intermediate layer insulator film; and a lower layer insulator film. The intermediate layer insulator film and the upper layer insulator film have openings for exposing the piezoelectric elements.