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:
Aug. 07, 2007
Filed:
Sep. 11, 2002
Maki Ito, Nagano-ken, JP;
Masami Murai, Nagano-ken, JP;
Shiro Yazaki, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid-ejecting apparatus according to which targeted good characteristics can be obtained, and moreover the scope for material selection can be broadened is provided. The liquid-ejecting apparatus contracts a pressure chamber and thus ejects liquid through application of voltage to a piezoelectric body, and is such that the driving waveform applied to the piezoelectric body during the liquid ejecting operation comprises a high potential period (a) in which a voltage exhibiting an electric field strength exceeding the coercive electric field of the piezoelectric body is applied, and a reverse potential period (a) in which a voltage such that the potential becomes of the opposite polarity to the polarity in the high potential period or the potential becomes zero is applied.