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:
Jun. 07, 2005
Filed:
Mar. 24, 2004
Shuji Koike, Setagaya, JP;
Yoshiaki Sakamoto, Kawasaki, JP;
Tomohisa Shingai, Kawasaki, JP;
Fuji Photo Film Co., Ltd., Minami-Ashigara, JP;
Abstract
A multi-nozzle ink jet head having a diaphragm that effectively utilizes the force generated by thin-film piezoelectric elements is disclosed. The head () has a head substrate () in which are formed a plurality of nozzles () and a plurality of pressure chambers (), a multi-layer diaphragm (--), piezoelectric elements (), and individual electrodes (). By making the thickness of the common electrode layer (-) of the multi-layer diaphragm be thin but such that problems do not occur during multi-pin driving, optimization of the rigid layer becomes possible, and hence it is possible to use the force generated by the thin-film piezoelectric elements efficiently in ink ejection.