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:
Nov. 25, 2008
Filed:
Sep. 26, 2005
Atsuo Sakaida, Gifu, JP;
Hisamitsu Sakai, Kagoshima, JP;
Hiroshi Aida, Kagoshima, JP;
Shin Ishikura, Kagoshima, JP;
Atsuo Sakaida, Gifu, JP;
Hisamitsu Sakai, Kagoshima, JP;
Hiroshi Aida, Kagoshima, JP;
Shin Ishikura, Kagoshima, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Kyocera Corporation, Kyoto-shi, Kyoto, JP;
Abstract
An inkjet head has: a channel unit having a plurality of nozzles and a plurality of pressure chambers respectively communicating with the nozzles; and an actuator unit on the channel unit and having a piezoelectric sheet, a plurality of individual electrodes respectively arranged to positionally correspond to the pressure chambers respectively and a common electrode sandwiching the piezoelectric sheet together with the plurality of individual electrodes. The actuator unit has a thickness of 20 μm to 100 μm and a surface roughness of the end face of the actuator unit including an intersection with channel unit and the actuator unit is 0.15 μm to 0.5 μm, and at least part of the end face is sealed by a resin film.