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:
Dec. 07, 2021
Filed:
Feb. 28, 2020
Canon Kabushiki Kaisha, Tokyo, JP;
Hiroki Tajima, Yokohama, JP;
Keiichiro Tsukuda, Yokohama, JP;
Kenji Yabe, Yokohama, JP;
Yuji Tamaru, Tokyo, JP;
Naoko Shimizu, Kawasaki, JP;
Kyosuke Toda, Kawasaki, JP;
Sayaka Seki, Kawasaki, JP;
Yosuke Takagi, Yokohama, JP;
Shimpei Yoshikawa, Yokohama, JP;
Ryo Sato, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection apparatus includes: a recording head that ejects liquid; a sub-tank that is connected to the recording head and temporarily stores the liquid to be supplied to the recording head; a liquid tank that communicates with the sub-tank and is able to be filled with the liquid; a first atmosphere opening unit that is provided in the liquid tank; and a second atmosphere opening unit that is provided in the sub-tank. The second atmosphere opening unit is closable when the liquid tank is filled with the liquid, and the first atmosphere opening unit and the second atmosphere opening unit are able to open the liquid tank and the sub-tank to the atmosphere, respectively, when the sub-tank is filled with the liquid filled in the liquid tank by a hydraulic head pressure.