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:
Sep. 06, 2011
Filed:
May. 16, 2008
Yasukazu Nihei, Kanagawa, JP;
Yasukazu Nihei, Kanagawa, JP;
FujiFilm Corporation, Tokyo, JP;
Abstract
A method of manufacturing a piezoelectric actuator, includes: forming a constraint force buffering layer, the constraint force buffering layer being made of a hardness control material of which hardness changes in accordance with temperature condition; raising the hardness of the constraint force buffering layer by cooling the constraint force buffering layer; and forming a piezoelectric element by a deposition method, on the constraint force buffering layer of which hardness has been raised, wherein: the hardness control material is a shape memory polymer, a glass transition temperature of the shape memory polymer is lower than an operating temperature occurring during driving of the piezoelectric actuator, and the constraint force buffering layer has a higher hardness at a temperature occurring during formation of the piezoelectric element which is lower than the operating temperature.