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:
Apr. 13, 2010
Filed:
May. 22, 2007
Naoto Iwao, Nagoya, JP;
Atsuo Sakaida, Gifu, JP;
Naoto Iwao, Nagoya, JP;
Atsuo Sakaida, Gifu, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
An ink jet printer is provided with a passage unit, an actuator, and a pulse applying device. The passage unit comprises a nozzle, a pressure chamber, and an ink passage located between the nozzle and the pressure chamber. The actuator faces the pressure chamber and comprises a first electrode, a second electrode to which a reference potential can be applied, and a piezoelectric element located between the first electrode and the second electrode. The pulse applying device is capable of applying a first voltage pulse to the first electrode such that the nozzle discharges an ink droplet, and a second voltage pulse to the first electrode such that the nozzle does not discharge the ink droplet. A voltage change on a leading edge and/or a trailing edge of the second voltage pulse is greater than a voltage change on a leading edge and/or a trailing edge of the first voltage pulse.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile