Flüssigkeitsausgabekopf, Flüssigkeitsausgabevorrichtung und Piezoelektrische Vorrichtung

Details

Veröffentlichungs-Nr.

EP3456539

Aktenzeichen

EP18195493

Anmeldetag

19. September 2018

Veröffentlichung

9. Dezember 2020

Erteilung

9. Dezember 2020

Rechtsraum

EP

IPC

B41J2/14

Abstract

Provided is a liquid ejecting head including a pressure chamber to accommodate a liquid, a vibration plate constituting a wall surface of the pressure chamber, a nozzle to eject the liquid accommodated in the pressure chamber, and a piezoelectric element disposed on one side of the vibration plate. The piezoelectric element includes a piezoelectric body layer configured to deform when a voltage is applied to the piezoelectric body layer, a first electrode positioned between the vibration plate and the piezoelectric body layer and disposed on one surface of the piezoelectric body layer, and a second electrode disposed on the other surface of the piezoelectric body layer. The liquid ejecting head further includes wiring connected to the second electrode and extended along a surface direction of the piezoelectric body layer, and does not include a metal layer having the same potential as the first electrode in a first area which is an area positioned between the wiring and the vibration plate and in which the wiring overlaps with none of the second electrode and the piezoelectric body layer in a direction perpendicular to a surface direction of the second electrode.

Anmelder

Firma

Seiko Epson Corporation

Land

🇯🇵 Japan

Fachgebiete