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. 26, 2005
Filed:
Jun. 16, 2003
Takanori Nakano, Osaka, JP;
Masakazu Tanahashi, Osaka, JP;
Kazuo Nishimura, Osaka, JP;
Masaichiro Tatekawa, Osaka, JP;
Shogo Matsubara, Fukuoka, JP;
Takanori Nakano, Osaka, JP;
Masakazu Tanahashi, Osaka, JP;
Kazuo Nishimura, Osaka, JP;
Masaichiro Tatekawa, Osaka, JP;
Shogo Matsubara, Fukuoka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A piezoelectric actuatorhas: a piezoelectric actuator partmade up of a common electrodea piezoelectric elementand an individual electrodean electrical interconnection joint partformed on the individual electrodean electrical interconnectionformed on the electrical interconnection joint parta head blockfixed to a nozzle platethrough the electrical interconnectionand a PI tapedisposed within the head blockA closed spaceis defined between the head blockand the nozzle plateThe closed spaceis divided by the PI tapeinto two sections. Of these two sections of the closed spacethe one on the side of the head blockconstitutes a first closed spaceA moisture absorbentis sealed within the first closed spaceRelative humidity within the closed spaceof the ink jet headis not less than 0% nor more than 20%.