Invention Grant
- Patent Title: Liquid ejection head and control method of liquid ejection head
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Application No.: US16720940Application Date: 2019-12-19
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Publication No.: US10974504B2Publication Date: 2021-04-13
- Inventor: Takuro Yamazaki , Yoshiyuki Nakagawa , Toru Nakakubo , Kazuhiro Yamada , Ryo Kasai
- Applicant: CANON KABUSHIKI KAISHA
- Applicant Address: JP Tokyo
- Assignee: CANON KABUSHIKI KAISHA
- Current Assignee: CANON KABUSHIKI KAISHA
- Current Assignee Address: JP Tokyo
- Agency: Venable LLP
- Priority: JPJP2018-241290 20181225
- Main IPC: B41J2/18
- IPC: B41J2/18 ; B41J2/14 ; B41J2/045

Abstract:
A liquid ejection head can stably eject a liquid from an ejection port by mitigating thickening of the liquid by evaporation from the ejection port. The liquid ejection head has a support substrate; a liquid chamber arranged on the support substrate and provided with an energy generating element for generating energy necessary for ejection of a liquid and an ejection port from which the liquid is ejected; and a circulation flow path of the liquid that passes through the liquid chamber. The liquid ejection head further has a first circulating element that forms a first circulatory flow in the circulation flow path; and a second circulating element that forms a second circulatory flow inside the liquid chamber and a driving frequency of the first circulating element is lower than a driving frequency of the second circulating element.
Information query
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