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. 09, 2004
Filed:
May. 08, 2002
Hiroshi Takahagi, Hitachinaka, JP;
Nobuhiro Noto, Hitachinaka, JP;
Takashi Sato, Hitachinaka, JP;
Akira Kashimura, Hitachinaka, JP;
Kenji Yamada, Hitachinaka, JP;
Kenichi Kugai, Hitachinaka, JP;
Hitachi Printing Solutions, Ltd., Kanagawa-ken, JP;
Abstract
An inkjet head includes a pair of support plates A, B and a diaphragm plate interposed between the support plates A, B. In this configuration, even when adhesion between the diaphragm plate and the support plate B is insecure, and when a piezoelectric element deforms a diaphragm toward a pressure chamber , that is, in a direction away from the support plate B, the support plate A prevents the diaphragm plate from peeling off the support plate B. Accordingly, the dimension and thus a deforming amount of the diaphragm is maintained uniform, whereby a uniform ink ejection performance is maintained.