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. 04, 2021
Filed:
Feb. 28, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Toshiaki Tokisawa, Kawasaki, JP;
Kyoshiro Okude, Kawasaki, JP;
Yumi Mukoyama, Kawasaki, JP;
Ryoma Arai, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An object of the present invention is to prevent a sub tank the does not need replenishment from being replenished with ink. The present invention is a printing apparatus that includes: a print head; a sub tank; a main tank; a supply valve; an atmosphere release valve; and one pump, and performs a replenishment operation to replenish the sub tank with ink from the main tank by driving the pump in a state where the atmosphere release valve is closed and the supply valve is open, wherein a second ink, and a third ink, and in a case where replenishment of a first ink and the third ink is necessary and replenishment of the second ink is not necessary, the atmosphere release valve is opened after the supply valve of the first ink is closed and before the supply valve of the second ink is opened.