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:
Sep. 22, 2015
Filed:
Oct. 09, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
The present invention enables a suitable ink filling state of an ink tank to be achieved by setting ink filling conditions taking prevention of ink leakage during unsealing of an ink supply port into account. An ink tank includes a first storage chamber formed in the ink tank to store an ink absorber, and a second storage chamber also formed in the ink tank to substantially form a closed space except for a communication section communicating with the first storage chamber. After the pressure in the ink tank is reduced to a target pressure through an atmospheric communicating port, the ink tank is internally filled, through an ink supply port, with a target filling amount of ink associated with the target pressure.