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:
Apr. 14, 2009
Filed:
Feb. 28, 2005
Yoshiaki Sakamoto, Kawasaki, JP;
Shuji Koike, Setagaya, JP;
Tomohisa Shingai, Kawasaki, JP;
Fuji Photo Film Co., Ltd., Minami-Ashigara-shi, JP;
Abstract
A multi-nozzle ink jet head using piezoelectric elements and a manufacturing method thereof are disclosed. A head () has a nozzle member () in which a plurality of nozzles () are formed, a pressure chamber wall member () in which a plurality of pressure chambers () are formed, and piezoelectric type actuators that have a diaphragm () and a plurality of piezo elements () and apply pressure to each of the plurality of pressure chambers for ejecting ink from the nozzles. A rigid coating member () is provided on inner surfaces of the pressure chamber walls or on parts of the diaphragm in contact with the pressure chamber wall member, thus increasing the rigidity of the pressure chamber walls.