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:
Aug. 15, 2023
Filed:
Dec. 13, 2021
Canon Kabushiki Kaisha, Tokyo, JP;
Yohei Nakamura, Kanagawa, JP;
Kazuhiro Yamada, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection apparatus comprising: two flow passages for supplying or recovering a liquid to an element substrate for ejecting the liquid; a circulation supply flow passage for supplying liquid to oneflow passage, a circulation recovery flow passage for recovering liquid from the other flow passage, and a plurality of on-off valve mechanisms for controlling communication and shutoff between the respective flow passages; the on-off valve mechanism comprises an opening located between flow passages, a sealing portion capable of on-off the opening, an urging member for urging the sealing portion in a direction to approach or away from the opening, and a movement mechanism for moving the sealing portion against the urging force of the urging member, the liquid discharge device controls opening and closing of at least two on-off valve mechanisms by moving the scaling parts of at least two on-off valve mechanisms together by the movement mechanism.