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. 02, 2004
Filed:
Sep. 28, 2001
Seiko Epson Corporation, , JP;
Abstract
A method for manufacturing a piezoelectric film element with increased durability is disclosed. The method of manufacturing the piezoelectric film element includes the steps of thermally treating a first film, and thermally treating a second film formed over the first film; whereby a dislocation layer is formed in the second film in a vicinity of an interface between the first film and the second film. Additionally, an ink-jet recording head including a pressure room substrate, a pressure room, and a piezoelectric film element is disclosed. The method of manufacturing the ink-jet recording head includes the steps of forming a pressure room in a pressure room substrate and manufacturing a piezoelectric film element at a position which makes it possible to press the pressure room.