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. 10, 2011
Filed:
Feb. 15, 2007
Naomi Kubo, Hachioji, JP;
Yasuo Nishi, Hachioji, JP;
Atsuro Yanata, Hachioji, JP;
Konica Minolta Holdings, Inc., Tokyo, JP;
Abstract
A liquid ejection head including: an insulating nozzle plateprovided with a nozzle having, a liquid supply port to supply liquid and a ejection port to eject the liquid supplied from the liquid supply port onto a substrate; a cavity in communication with the liquid supply port to reserve the liquid to be ejected from the ejection port; an electrostatic voltage application device to generate an electrostatic attraction force by applying the electrostatic voltage between the liquid in the nozzle and in the cavity, and substrate; and a control device to control application of the electrostatic voltage through the electrostatic voltage application device; wherein the nozzle is a flat nozzle not protruding from the nozzle plate and the control device control the electrostatic voltage application device so as to eject the liquid from the nozzle by applying a bipolar pulse which alternates between negative and positive polarity.