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Details

Veröffentlichungs-Nr.

EP4279280

Aktenzeichen

EP23171534

Anmeldetag

4. Mai 2023

Veröffentlichung

10. Dezember 2025

Erteilung

10. Dezember 2025

Rechtsraum

EP

IPC

B41J2/14B41J2/175B41J2/18B41J2/17

Abstract

A liquid ejection head (1) has: an ejection module (300) including a pressure chamber (12) and an ejection element (15) configured to eject a liquid in the pressure chamber, a supply channel (130), a collection channel (140) connected to the supply channel through a pressure chamber, a first pressure adjustment unit (120), a second pressure adjustment unit (150), and a circulation pump (500). A controlled pressure in the first pressure adjustment unit is set higher than a controlled pressure in the second pressure adjustment unit. A pressure reception area of a second flexible member (230B) and a second pressing plate (210B) in a second pressure control chamber (152) in a case where a second opening (191B) is brought into an open state is smaller than a pressure reception area of a first flexible member (230A) and a first pressing plate (210A) in a first pressure control chamber (122) in a case where a first opening (191A) is brought into an open state.

Anmelder

Firma

CANON KABUSHIKI KAISHA

Land

🇯🇵 Japan

Fachgebiete