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:
Oct. 08, 2002
Filed:
Apr. 06, 2001
Tadashi Mitsuhashi, Tokorozawa, JP;
Citizen Watch Co., Ltd., Tokyo, JP;
Abstract
A method for driving an ink jet head is provided that achieves high-speed ejection of ink droplets without entailing satellite droplets. In driving the ink jet head to eject an ink droplet, first the driving voltage is lowered from its initial voltage value, then the driving voltage is rapidly raised to cause the meniscus to protrude outward, and the driving is stopped immediately after a main droplet is formed. In this condition, the driving voltage is lowered, thereby causing the meniscus to retreat and thus suppressing satellite ejection. Next, the driving voltage is raised to cause the meniscus to return to its initial position.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile