- 专利标题: LIQUID EJECTION HEAD AND LIQUID EJECTION APPARATUS
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申请号: EP22212736.7申请日: 2022-12-12
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公开(公告)号: EP4197796A1公开(公告)日: 2023-06-21
- 发明人: OHARA, Manabu , NABESHIMA, Naozumi , KONDO, Soji , YOSHII, Kazuya
- 申请人: CANON KABUSHIKI KAISHA
- 申请人地址: JP Tokyo 146-8501 30-2, Shimomaruko 3-chome, Ohta-ku,
- 代理机构: TBK
- 优先权: JP2021204924 20211217
- 主分类号: B41J2/175
- IPC分类号: B41J2/175 ; B41J2/17 ; B41J2/18
摘要:
A liquid ejection head (1) includes: an ejection element (15) configured to generate a pressure for ejecting the liquid; a supply channel (130) through which the liquid is supplied to a pressure chamber (12); a collection channel (140) connected to the supply channel through the pressure chamber and through which the liquid is collected from the pressure chamber; a circulation pump (500) capable of supplying the liquid from the supply channel into the pressure chamber, and collecting the liquid in the pressure chamber through the collection channel and sending the liquid to the supply channel; a first pressure adjustment unit (120) disposed between an outlet channel (180) of the circulation pump and the supply channel and configured to adjust a pressure in the supply channel; and a second pressure adjustment unit (150) disposed between an inlet channel (170) of the circulation pump and the collection channel and configured to adjust a pressure in the collection channel.
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