Flüssigkeitsausstosskopf, Verfahren und Vorrichtung

Details

Veröffentlichungs-Nr.

EP4751918

Anmeldetag

21. August 2025

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

IPC

B41J2/045

Abstract

A liquid ejection head includes a nozzle, a pressure chamber that communicates with the nozzle, a volume of the chamber being varied to eject liquid from the nozzle, an actuator configured to vary the volume in response to a drive signal, and a drive circuit configured to generate the signal. The signal includes n ejection waveforms each including an ejection pulse including an expansion portion and a contraction portion. At least one of the ejection waveforms includes a damping pulse that is subsequent to the ejection pulse and includes a contraction portion and an expansion portion. The ejection waveforms include consecutive ejection waveforms that are separated by an intermediate time period that is in a range of 0.2 times or more and 2 times or less a half cycle of a natural vibration period of the liquid in the chamber.

Anmelder

Firma

RISO Technologies Corporation

Land

🇯🇵 Japan