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:
Mar. 01, 2011
Filed:
Apr. 30, 2009
Hironobu Kazama, Matsumoto, JP;
Yuka Yonekura, Chino, JP;
Koji Sumi, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid jet head has a channel-forming substrate composed of a crystal substrate having a pressure-generating chamber linked to a nozzle opening as well as a piezoelectric element composed of a lower electrode, a piezoelectric layer, and an upper electrode and formed on the channel-forming substrate so that the pressure in the pressure-generating chamber can be changed, with the piezoelectric layer having a thickness equal to or smaller than 5 μm, made of a perovskite-type crystal, and formed so that the interval between the X-ray diffraction peak position derived from the (220) plane of the channel-forming substrate and the X-ray diffraction peak position derived from the (111) plane of the piezoelectric layer falls within the range 2θ=9.059±0.1°.