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:
Jun. 14, 2011
Filed:
Sep. 08, 2008
Takamichi Fujii, Kanagawa, JP;
Yasukazu Nihei, Kanagawa, JP;
Yoshikazu Hishinuma, Kanagawa, JP;
Tsuyoshi Mita, Kanagawa, JP;
Takamichi Fujii, Kanagawa, JP;
Yasukazu Nihei, Kanagawa, JP;
Yoshikazu Hishinuma, Kanagawa, JP;
Tsuyoshi Mita, Kanagawa, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
The piezoelectric device includes a substrate, a first electrode formed on the substrate, a piezoelectric film formed on the first electrode and a second electrode formed on a second side of the piezoelectric film which is away from a first side where the first electrode is formed. The first electrode is composed of a first layer in contact with the substrate and a second layer in contact with the piezoelectric film. The first layer is formed of a material that is wet etched at a different rate than the substrate. The ink-jet head includes the piezoelectric device, a liquid droplet storing/ejecting member for ejecting ink droplets through a ink spout and provided on the piezoelectric device and a diaphragm for vibrating in response to expansion or contraction of the piezoelectric device and provided between the piezoelectric device and the liquid droplet storing/ejecting member.