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. 21, 2005
Filed:
Jul. 30, 2003
Atsushi Suganuma, Kanagawa, JP;
Atsushi Suganuma, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An electrostatic ejection type ink jet head according to an embodiment of the present invention includes: first drive electrodes that are respectively provided for individual electrodes and are arranged closer to an insulating substrate side than an ink flow path; and a second drive electrode that is provided commonly among all of the individual electrodes and is arranged closer to a head substrate side than the first drive electrodes. At the time of recording of an image, ink ejection/non-ejection is controlled by biasing the second drive electrode to a predetermined voltage level having the same polarity as a fine particle component contained in ink and switching the first drive electrodes between a high-impedance state and a ground level in accordance with image data.