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:
Nov. 10, 2020
Filed:
Mar. 18, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection apparatus includes a cap member contacting an ejection opening surface of a liquid ejection unit and covering the ejection opening surface, and a drive motor configured to cause the ejection opening surface and the cap member to contact or separate from each other. Furthermore, the liquid ejection apparatus includes a negative pressure generation unit configured to bring a space surrounded by the ejection opening surface and the cap member into a negative pressure state, and a control unit configured to drive the negative pressure generation unit to bring the space into a negative pressure state under a separation instruction to separate the cap member and the liquid ejection unit, and subsequently cause the drive motor to separate the liquid ejection unit and the cap member.