US 10,870,274 B2 · Liquid ejecting head and liquid ejecting apparatus

Abstract

In a liquid ejecting head, a reduction in mechanical strength due to a liquid chamber provided to circulate a liquid is limited. The liquid ejecting head includes: a nozzle plate provided with a nozzle; a flow channel forming unit provided with a pressure chamber to which a liquid is supplied, a communication channel through which the nozzle and the pressure chamber communicate with each other, and a circulating liquid chamber communicating with the communication channel; and a pressure generating unit that generates a pressure change in the pressure chamber. A height at a first location in the circulating liquid chamber is larger than a height at a second location on a side of the communication channel when viewed from the first location.

Claims20

Dependent claims

A liquid ejecting head comprising:

a nozzle plate provided with a nozzle;
a flow channel forming unit provided with a pressure chamber to which a liquid is supplied, a communication channel through which the nozzle and the pressure chamber communicate with each other, and a circulating liquid chamber communicating with the communication channel;
and
a pressure generating unit that generates a pressure change in the pressure chamber,
wherein a height at a first location in the circulating liquid chamber is larger than a height at a second location on a side of the communication channel when viewed from the first location, and
wherein the circulating liquid chamber has an upper surface provided with a plurality of grooves extending into a curved shape in a plan view.

3 more elements

Dependencies are inferred from the claim text.

Liquid ejecting head and liquid ejecting apparatus

Life of this patent

Liquid ejecting head and liquid ejecting apparatus

Life of this patent

Abstract

Claims20