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:
May. 11, 1999
Filed:
Sep. 04, 1996
Hisashi Yoshimura, Nara, JP;
Kouichi Irihara, Nara, JP;
Kohji Tsurui, Nara, JP;
Hiroshi Kubota, Nara, JP;
Kazuya Koyama, Nara, JP;
Hajime Horinaka, Nara, JP;
Masaharu Kimura, Osaka, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An ink jet head includes an electroviscous fluid chamber provided at a part of a sidewall of an ink chamber, and having electroviscous fluid sealed therein, an elastic film provided between the ink chamber and the electroviscous fluid chamber for transmitting pressure between the ink chamber and the electroviscous fluid chamber, a pair of electrodes provided at a part of a sidewall of the electroviscous fluid chamber corresponding to the ink chamber for applying an electric field to the electroviscous fluid, a pressure generation device for discharging ink from the ink chamber, and a control device for controlling ink discharge by applying a voltage to the pair of electrodes to alter the viscosity of the electroviscous fluid in response to record information.