Kopfeinheit und Flüssigkeitsausstossvorrichtung

Details

Veröffentlichungs-Nr.

EP4282660

Aktenzeichen

EP23174737

Anmeldetag

23. Mai 2023

Veröffentlichung

2. April 2025

Erteilung

2. April 2025

Rechtsraum

EP

IPC

B41J2/14

Abstract

A head unit (HU) includes a liquid discharge head (100) and circuitry (500). The liquid discharge head (100) includes a nozzle plate (101) having a nozzle (102), a liquid chamber (114) to store a liquid to be discharged from the nozzle (102), a valve body (130) in the liquid chamber (114), a valve body coupler (131) coupled to the valve body (130), and a driver (132) to drive the valve body coupler (131) to move the valve body (130). The valve body (130) is movable between a contact position at which the valve body (130) contacts the nozzle plate (101) to close the nozzle (102) and a separated position at which the valve body (130) is separated from the nozzle plate (101) to open the nozzle (102). The circuitry (500) moves the valve body (130) between the contact position and the separated position to open and close the nozzle (102) in a first operation, and applies vibration to the valve body (130) while the valve body (130) is temporarily held at the separated position in a second operation.

Anmelder

Firma

Ricoh Company, Ltd.

Land

🇯🇵 Japan

Fachgebiete