Flüssigkeitsausstosskopf und Flüssigkeitsausstossvorrichtung

Details

Veröffentlichungs-Nr.

EP3725530

Aktenzeichen

EP20170045

Anmeldetag

17. April 2020

Veröffentlichung

22. Februar 2023

Erteilung

22. Februar 2023

Rechtsraum

EP

IPC

B41J2/055B41J2/14B41J2/16

Abstract

A liquid ejecting head including a diaphragm constituting a portion of a wall surface of a pressure chamber that accommodates a liquid, and a piezoelectric element that vibrates the diaphragm. In the liquid ejecting head, the diaphragm includes a plurality of layers, and the plurality of layers include a compressive film that has compressive stress and a tensile film that has tensile stress. The compressive film and the tensile film are two layers adjacent to each other that have a largest tension difference among the plurality of layers, and an absolute value of the tension difference between the compressive film and the tensile film is 400 [N/m] or smaller.

Anmelder

Firma

Seiko Epson Corporation

Land

🇯🇵 Japan

Fachgebiete