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. 12, 2025
Filed:
May. 17, 2023
Canon Kabushiki Kaisha, Tokyo, JP;
Shimpei Yoshikawa, Kanagawa, JP;
Takeho Miyashita, Kanagawa, JP;
Kyosuke Toda, Kanagawa, JP;
Chiaki Muraoka, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head includes an ejection unit, a channel member, and a circulation unit. The ejection unit includes an ejection port array in which ejection ports configured to eject a liquid are arrayed, and a communication channel communicating with the ejection port array. The channel member includes a channel that supplies and collects the liquid to and from the communication channel. The circulation unit supplies the liquid to the channel of the channel member and collects the liquid from the channel of the channel member. The ejection unit further includes a plurality of ejection port arrays that eject a liquid of the same type, and a plurality of communication channels corresponding to the plurality of ejection port arrays. The channel member includes a plurality of individual channels respectively through which the plurality of communication channels communicate with one of the circulation unit as a single circulation unit.