Multi-layered nozzle fluid ejection device

Patent metadata

Field	Value
Publication number	US-2019126617-A1
Application number	US-201616082317-A
Country	US
Kind code	A1
Filing date	Jul 12, 2016
Priority date	Jul 12, 2016
Publication date	May 2, 2019
Grant date	—

Abstract

According to examples, a multi-layered nozzle fluid ejection device may include a first nozzle layer including a first nozzle layer thickness and a first nozzle layer orifice, and a second nozzle layer including a second nozzle layer thickness and a second nozzle layer orifice. The first nozzle layer orifice may include a first nozzle layer orifice dimension that is different than a second nozzle layer orifice dimension of the second nozzle layer orifice.

First claim

What is claimed is:

1 . A multi-layered nozzle fluid ejection device comprising:
a nozzle including
a first nozzle layer including a first nozzle layer thickness and a first nozzle layer orifice dimension, and
a second nozzle layer including a second nozzle layer thickness and a second nozzle layer orifice diameter, wherein the first nozzle layer orifice dimension is different than the second nozzle layer orifice diameter;
an ejection chamber to supply printing material to be ejected from the nozzle; and a fluid ejector to eject the printing material from the nozzle.

2 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein
the first nozzle layer is disposed between the second nozzle layer and the ejection chamber, and the first nozzle layer orifice dimension is greater than the second nozzle layer orifice diameter.

3 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein
the second nozzle layer includes a tapered cross-section, and the second nozzle layer orifice diameter is disposed at an outermost surface of the second nozzle layer relative to the ejection chamber.

4 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein
the second nozzle layer includes a tapered cross-section, and the second nozzle layer orifice diameter is disposed at an innermost surface of the second nozzle layer relative to the ejection chamber.

5 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein
the first nozzle layer orifice dimension is greater than a corresponding opening dimension of the ejection chamber.

6 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein
the nozzle includes a total nozzle layer thickness, and the total nozzle layer thickness includes
the first nozzle layer thickness, and
the second nozzle layer thickness that corresponds to a specified viscosity of the printing material and a specified hydraulic resistance for the second nozzle layer.

7 . The multi-layered nozzle fluid ejection device according to claim 6 , wherein
the total nozzle layer thickness is based on a stress associated with an unsupported span of the first nozzle layer and the second nozzle layer.

8 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein the second nozzle layer thickness is approximately 9 μm.

9 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein the second nozzle layer thickness is less than approximately 9 μm.

10 . The multi-layered nozzle fluid ejection device according to claim 1 , wherein the fluid ejector is a resistor.

11 . A multi-layered nozzle fluid ejection device comprising:
a nozzle including
a first nozzle layer including a first nozzle layer thickness and a first nozzle layer orifice, and
a second nozzle layer including a second nozzle layer thickness and a second nozzle layer orifice, wherein
the first nozzle layer orifice includes a first nozzle layer orifice dimension that is different than a second nozzle layer orifice dimension of the second nozzle layer orifice, and
the first nozzle layer orifice dimension and the second nozzle layer orifice dimension are respectively disposed generally orthogonal to the first nozzle layer thickness and the second nozzle layer thickness; and

an ejection chamber to supply printing material to be ejected from the nozzle.

12 . The multi-layered nozzle fluid ejection device according to claim 11 , wherein
the second nozzle layer orifice dimension includes a second nozzle layer orifice diameter.

13 . The multi-layered nozzle fluid ejection device according to claim 12 , wherein
the first nozzle layer is disposed between the second nozzle layer and the ejection chamber, and the first nozzle layer orifice dimension is greater than the second nozzle layer orifice diameter.

14 . A multi-layered nozzle fluid ejection device comprising:
a first nozzle layer including a first nozzle layer thickness and a first nozzle layer orifice; a second nozzle layer including a second nozzle layer thickness and a second nozzle layer orifice, wherein
the first nozzle layer orifice includes a first nozzle layer orifice dimension that is different than a second nozzle layer orifice dimension of the second nozzle layer orifice,
the second nozzle layer thickness is based on a specified viscosity of printing material that is to be used with the multi-layered nozzle fluid ejection device and a specified hydraulic resistance for the second nozzle layer, and
the first nozzle layer thickness is based on a stress to be supported by a portion of the first nozzle layer and a portion of the second nozzle layer; and
an ejection chamber to supply the printing material to be ejected from the first nozzle layer orifice and the second nozzle layer orifice.

15 . The multi-layered nozzle fluid ejection device according to claim 14 , wherein
the first nozzle layer orifice dimension is greater than a corresponding opening dimension of the ejection chamber.

Assignees

• Hewlett Packard Entpr Development L P
• Hewlett Packard Development Co

Inventors

• Mcclelland Sean P

Classifications

• B41J2002/14403

  including a filter · CPC title

• B41J2/1404

  Geometrical characteristics · CPC title

• B41J2/1433 Primary

  Structure of nozzle plates · CPC title