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. 12, 2011
Filed:
Aug. 20, 2004
Hidetsugu Kawai, Kashiba, JP;
Shigeru Nishio, Yamatokoriyama, JP;
Haruhiko Deguchi, Tenri, JP;
Shigeaki Kakiwaki, Nara, JP;
Kazuhiro Murata, Tsukuba, JP;
Hidetsugu Kawai, Kashiba, JP;
Shigeru Nishio, Yamatokoriyama, JP;
Haruhiko Deguchi, Tenri, JP;
Shigeaki Kakiwaki, Nara, JP;
Kazuhiro Murata, Tsukuba, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
An ink jet apparatus electrifies ink in a nozzle, and ejects the ink from an ink ejecting hole onto a printing medium by a first electric field generated between the nozzle and the printing medium. The apparatus includes an ink catching device including an ink catching portion adjacent to the nozzle that catches an ejected substance. Between the nozzle and the ink catching portion, the apparatus applies a voltage for generating a second electric field which (i) causes an ejected substance, formed from the ink or the ink whose viscosity is changed, to be ejected from the nozzle, and (ii) causes the ink catching portion to attract the ejected substance. The apparatus, utilizes an electrostatic force to eject fluid, removes a clogging of an ejection head at any position, realizes less initial ejection fluctuation and improves the reliability of ejection.