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. 07, 2016
Filed:
Apr. 21, 2015
Canon Kabushiki Kaisha, Tokyo, JP;
Takuto Moriguchi, Kamakura, JP;
Shuzo Iwanaga, Kawasaki, JP;
Kazuhiro Yamada, Yokohama, JP;
Zentaro Tamenaga, Sagamihara, JP;
Takatsugu Moriya, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
In the present invention, an air bubble residing in a filter chamber is purged at a high speed without inducing liquid ejection deficiency at a liquid ejection head. A filter chamber is divided into a first filter chamber and a second filter chamber via a filter. A pump circulates ink through an ink tube and a bypass path between an ink tank and the first filter chamber. A valve capable of regulating a flow of the ink is provided at the ink tube that allows the second filter chamber and a print head to communicate with each other.