Verfahren zum Betrieb eines Tintenstrahldruckkopfs und einer Tintenstrahldruckkopfanordnung

Details

Veröffentlichungs-Nr.

EP3222422

Aktenzeichen

EP17162036

Anmeldetag

21. März 2017

Veröffentlichung

1. April 2020

Erteilung

1. April 2020

Rechtsraum

EP

IPC

B41J2/045

Abstract

In a method for operating an inkjet print head for generating a droplet of a liquid, the inkjet print head comprises a number of ejection units, each ejection unit comprising a piezo-electric actuator having a signal electrode, a common electrode and a piezoelectric layer interposed between the signal electrode and the common electrode. The method comprises providing a non-jetting pulse signal on a common electrode, wherein the non-jetting pulse signal is adapted to generate a pressure wave in the liquid in the corresponding ejection unit without expelling a droplet of the liquid. The method further comprises providing a jetting pulse signal on a signal electrode, wherein the jetting pulse signal is adapted to generate a pressure wave in the liquid in the corresponding ejection unit such that a droplet of the liquid is expelled. Further, an inkjet print head assembly comprising an inkjet print head and a control circuitry is provided. The inkjet print head assembly is configured for performing the above method.

Anmelder

Firmen

Canon Production Printing Holding B.V.
OCE Holding B.V.

Land

🇳🇱 Niederlande

Fachgebiete