Liquid ejecting head and liquid ejecting apparatus

Patent metadata

Field	Value
Publication number	US-8991982-B2
Application number	US-201314096336-A
Country	US
Kind code	B2
Filing date	Dec 4, 2013
Priority date	Dec 10, 2012
Publication date	Mar 31, 2015
Grant date	Mar 31, 2015

Abstract

A liquid ejecting head includes a first member including a communication flow path communicating with a pressure chamber, and a second member joined to the first member and including a nozzle communicating with the communication flow path. The communication flow path includes a first flow path section adjacent to the pressure chamber, a second flow path section adjacent to the nozzle and wider than the first flow path section, and an intermediate flow path section including a sloped surface formed between the first flow path section and the second flow path section. An equation “H−W tan(π/4−θ/2)≧0” is satisfied in which H represents a length of the second flow path section, W represents a maximum width of the second flow path, and θ represents an angle between an imaginary plane parallel to the bottom face of the communication flow path and the sloped surface.

First claim

What is claimed is:

1. A liquid ejecting head comprising:
a first member including a pressure chamber, a volume of the pressure chamber varying by operation of a pressure generator, and a communication flow path communicating with a downstream end portion of the pressure chamber;
a second member joined to a face of the first member to constitute a bottom face of the communication flow path and the second member including a nozzle communicating with the communication flow path,…

Assignees

• Seiko Epson Corp

Inventors

• Yamasaki Keigo

Classifications

• B41J2202/11

  Operations & Transport · mapped topic

• B41J2/14233 Primary

  Operations & Transport · mapped topic

• B41J2/055

  Operations & Transport · mapped topic

• B41J2002/14241

  Operations & Transport · mapped topic