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:
Jul. 01, 1997
Filed:
Dec. 07, 1994
Masahiro Fujii, Suwa, JP;
Ikuhiro Miyashita, Suwa, JP;
Hiroshi Koeda, Suwa, JP;
Keiichi Mukaiyama, Suwa, JP;
Hiroyuki Maruyama, Suwa, JP;
Noriyoshi Otsuki, Suwa, JP;
Toshiaki Watanabe, Suwa, JP;
Naoki Kobayashi, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An inkjet printer provided with an ink jet print head having a nozzle, an ink channel that is connected to the nozzle, and an electrostatic actuator that is composed of a diaphragm that is provided in a part of the ink channel and an electrode placed outside of the ink channel opposite to the diaphragm. The diaphragm is distorted by means of an electrostatic force generated by applying a first voltage to the electrostatic actuator. A second voltage, different than the first voltage, is applied to the actuator to relax the diaphragm and to discharge ejecting ink droplets from the nozzle.