Liquid ejecting head, liquid ejecting apparatus

Patent metadata

Field	Value
Publication number	US-8998380-B2
Application number	US-201314100291-A
Country	US
Kind code	B2
Filing date	Dec 9, 2013
Priority date	Dec 12, 2012
Publication date	Apr 7, 2015
Grant date	Apr 7, 2015

Abstract

A liquid ejecting head includes a nozzle plate, a flow path forming substrate, and a communication plate between the nozzle plate and the substrate and having a communication hole connecting a nozzle and a first opening of a pressure chamber. The first opening extends in a direction perpendicular to an arrangement direction of the pressure chambers. The first opening has a narrowed portion close to the communication hole. The communication hole has at least three edge lines which extend in a penetration direction. The communication plate is bonded to the substrate such that the ends of the edge lines at a surface close to the substrate are covered with the substrate that defines the narrowed portion on a surface close to the communication plate.

First claim

What is claimed is:

1. A liquid ejecting head comprising:
a nozzle plate having a plurality of nozzles through which liquid is ejected;
a flow path forming substrate having a plurality of pressure chambers which are arranged side by side in a first direction, each of the pressure chambers having a first opening provided on a bottom surface, and a piezoelectric element which is provided adjacent the pressure chamber; and
a communication plate that is located between the nozzle…

Assignees

• Seiko Epson Corp

Inventors

• Fukuzawa Yuma
• Owaki Hiroshige

Classifications

• B41J2202/11

  Operations & Transport · mapped topic

• B41J2202/20

  Operations & Transport · mapped topic

• B41J2/14233 Primary

  Operations & Transport · mapped topic