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:
Jan. 14, 2003
Filed:
Feb. 18, 2000
Applicant:
Inventor:
Hajime Mizutani, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B41J 2/045 ;
U.S. Cl.
CPC ...
B41J 2/045 ;
Abstract
A pressure generating chamber communicating with a nozzle orifice from which ink is to be ejected. A vibration plate constitutes at least a part of the pressure generating chamber. A piezoelectric element includes a lower electrode constituting at least a part of the vibration plate, a piezoelectric layer formed on the lower electrode, an upper electrode formed on the piezoelectric layer, and an active part for actuating the vibration plate to eject the ink from the nozzle orifice. A neutral plane of the actuation of the active part is located in the vibration plate.