Fluid ejection dies

Patent metadata

Field	Value
Publication number	US-11325379-B2
Application number	US-201816965689-A
Country	US
Kind code	B2
Filing date	Mar 12, 2018
Priority date	Mar 12, 2018
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A fluid ejection die may include a number of fluid ejection chambers laid to correlate with a number of dividers formed in a fluid channel layer such that adjacent fluid ejection chambers are alternatively arranged on a relatively higher-temperature side of the fluid ejection die and a relatively lower-temperature side of the fluid ejection die.

First claim

What is claimed is:

1. A fluid ejection die comprising:
a fluid ejection layer comprising:
a number of fluid ejection actuators disposed in a number of fluid ejection chambers; and
a number of nozzles fluidically coupled to the fluid ejection chambers;

a fluid channel layer defining a number of fluid channels therein, the fluid channels being fluidically coupled to the fluid ejection chambers via a number of fluid feed holes defined within the fluid ejection layer;
a fluid slot layer disposed on a side of the fluid channel layer opposite the fluid ejection layer; and
a first fluid slot and a second fluid slot defined in the fluid slot layer,
wherein across a width of the fluid ejection die, one side is a relatively higher-temperature side during operation and the opposite side is a relatively lower-temperature side;
wherein the fluid ejection chambers are laid out such that adjacent fluid ejection chambers along a length of the fluid ejection die are alternatively arranged on the relatively higher-temperature side of the fluid ejection die and the relatively lower-temperature side of the fluid ejection die.

2. The fluid ejection die of claim 1 , wherein the layout of the fluid ejection chambers comprises a nozzle pitch that results in a number of printed drops of fluid with an optical resolution higher than that discernable by a human eye.

3. The fluid ejection die of claim 2 , wherein the nozzle pitch comprises between 1,200 dots per inch (dpi) and 3,600 dpi.

4. The fluid ejection die of claim 1 , wherein the fluid ejection chambers are arranged in a v-shape across a width of the fluid ejection die.

5. The fluid ejection die of claim 1 , wherein the fluid ejection chambers are arranged in a v-shape across a width of the fluid ejection die, and wherein dividers between adjacent v-shapes of fluid ejection chambers comprise a number of pillars.

6. The fluid ejection die of claim 1 , wherein the first fluid slot and the second fluid slot are defined in the fluid slot layer along a length of the fluid ejection die.

7. A system for circulating fluid within a fluid ejection die, comprising:
a fluid reservoir;
fluid ejection die fluidically coupled to the fluid reservoir, the fluid ejection die comprising a number of fluid ejection chambers laid out between a number of dividers formed in a fluid channel layer such that adjacent fluid ejection chambers are alternatively arranged on relatively higher-temperature side of the fluid ejection die and relatively lower-temperature side of the fluid ejection die; and
wherein the fluid ejection chambers are arranged in a v-shape across a width of the fluid ejection die.

8. The system of claim 7 , comprising:
a fluid ejection layer comprising:
a number of fluid ejection actuators disposed in the fluid ejection chambers; and
a number of nozzles fluidically coupled to the fluid ejection chambers;

wherein the fluid channel layer defines a number of fluid channels therein, the fluid channels being fluidically coupled to the fluid ejection chambers via a number of fluid feed holes defined within the fluid ejection layer;
a fluid slot layer disposed on a side of the fluid channel layer opposite the fluid ejection layer, the fluid slot layer a first fluid slot and a second fluid slot defined in the fluid slot layer.

9. The system of claim 7 , wherein the layout of the fluid ejection chambers comprises a nozzle pitch that results in a number of printed drops of fluid with an optical resolution higher than that discernable by a human eye.

10. The system of claim 7 , wherein the dividers comprise a number of ribs formed in a v-shape around the v-shaped arrangement of the fluid ejection chambers.

11. The system of claim 7 , wherein the dividers comprise a number of pillars formed in a v-shape around the v-shaped arrangement of the fluid ejection chambers.

12. A fluid ejection die comprising:
a number of fluid ejection chambers laid out to correlate with a number of dividers formed in a fluid channel layer;
wherein, across a width of the fluid ejection die, one side is a relatively higher-temperature side during operation and the opposite side is a relatively lower-temperature side; and
wherein the fluid ejection chambers are arranged such that sequential fluid ejection chambers along a length of the die are alternatively arranged on the relatively higher-temperature side of the fluid ejection die and the relatively lower-temperature side of the fluid ejection die.

13. The fluid ejection die of claim 12 , comprising:
a fluid ejection layer comprising:
a number of fluid ejection actuators disposed in the fluid ejection chambers; and
a number of nozzles fluidically coupled to the fluid ejection chambers;
wherein the fluid channel layer defines a number of fluid channels therein, the fluid channels being fluidically coupled to the fluid ejection chambers via a number of fluid feed holes defined within the fluid ejection layer;
a fluid slot layer disposed on a side of the fluid channel layer opposite the fluid ejection layer, the fluid slot layer defining a first fluid slot and a second fluid slot.

14. The fluid ejection die of claim 12 , wherein the fluid ejection chambers are arranged in a v-shape across a width of the fluid ejection die, and wherein the dividers comprise a number of ribs formed in a v-shape to correlate with the v-shaped arrangement of the fluid ejection chambers.

15. The fluid ejection die of claim 12 , wherein the fluid ejection chambers are arranged in a v-shape across a width of the fluid ejection die, and wherein the dividers comprise a number of pillars formed in a v-shape to correlate with the v-shaped arrangement of the fluid ejection chambers.

16. The fluid ejection die of claim 1 , wherein the fluid ejection chambers are arranged diagonally with respect to the width of the fluid ejection die.

17. The fluid ejection die of claim 1 , further comprising dividers between adjacent lines of fluid ejection chambers.

18. The fluid ejection die of claim 1 , wherein the fluid ejection chambers are arranged in parallel rows that are diagonal with respect to the width of the fluid ejection die, and further comprising a number of dividers being arranged diagonally with respect to the width of the fluid ejection die and in between adjacent rows of fluid ejection chambers.

19. The fluid ejection die of claim 12 , wherein the fluid ejection chambers are arranged diagonally with respect to the width of the fluid ejection die.

20. The fluid ejection die of claim 16 , wherein the fluid ejection chambers are arranged in parallel rows that are diagonal with respect to the width of the fluid ejection die, the number of dividers being arranged diagonally with respect to the width of the fluid ejection die and in between adjacent rows of fluid ejection chambers.

Assignees

• Hewlett Packard Development Co

Inventors

• Clark Garrett E

Classifications

• B41J2/14145 Primary

  Structure of the manifold · CPC title

• B41J2/1404

  Geometrical characteristics · CPC title

• B41J2002/14403

  including a filter · CPC title

• B41J2202/12

  with ink circulating through the whole print head · CPC title

• B41J2/145

  Arrangement thereof · CPC title