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:
Jul. 02, 2019
Filed:
Jun. 11, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Ryoma Arai, Kawasaki, JP;
Junya Kosuge, Kawasaki, JP;
Takashi Abe, Kawasaki, JP;
Yumi Mukoyama, Kawasaki, JP;
Kyoshiro Okude, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An inkjet printing apparatus includes a tank, a print head including a pressure chamber filled with ink supplied from the tank and an ejection opening which is communicated with the pressure chamber and which ejects ink filled in the pressure chamber a supply flow path for supplying ink from the tank to the print head, a collection flow path for collecting ink from the print head to the tank, a circulation unit configured to circulate ink so as to flow through the supply flow path, an inside of the pressure chamber, and the collection flow path, and a buffer chamber disposed inside the print head or in the collection flow path and which is volume variable. The tank is disposed higher than the print head in a vertical direction, and a one-way valve is provided between the buffer chamber and the tank in the collection flow path.