Fluid channels of different types

Patent metadata

Field	Value
Publication number	US-12128684-B2
Application number	US-202017921333-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	May 22, 2020
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

An example fluid ejection device comprises a plurality of distinct fluid channels. Each fluid channel comprises a distinct fluid inlet to the ejection device. A subset of the plurality of distinct fluid channels comprises fluid recirculating fluid channels, and the remaining fluid channels comprising non-recirculating fluid channels.

First claim

What is claimed is:

1. A fluid ejection device comprising:
a plurality of distinct fluid channels, each fluid channel comprising a distinct fluid inlet to the fluid ejection device;
a subset of the plurality of distinct fluid channels comprising fluid recirculating channels, the remaining fluid channels comprising non-recirculating fluid channels; and
a fluidic die comprising:
a plurality of ejection chambers, wherein a subset of the plurality of ejection chambers corresponds to the fluid recirculating channels, and
a recirculation channel above an ejection chamber of the subset of the plurality of ejection chambers.

2. The fluid ejection device of claim 1 , wherein the fluid recirculating channels are of a macrorecirculation type, of a microrecirculation type, or at a combination thereof.

3. The fluid ejection device of claim 1 , further comprising:
chamber inlets leading to the subset of the plurality of ejection chambers; and
chamber outlets leading away from the subset of the plurality of ejection chambers.

4. The fluid ejection device of claim 3 further comprising a fluid circulation element arranged in the fluid inlets, the fluid outlets, or a combination thereof.

5. The fluid ejection device of claim 1 ,
wherein the fluidic die further comprises an ejection chamber bypass channel fluidically connected to the subset of the plurality of ejection chambers.

6. The fluid ejection device of claim 1 , wherein the subset of the plurality of distinct fluid channels and the remaining fluid channels are arranged in an alternating pattern.

7. A fluid ejection device comprising:
a fluidic die;
a plurality of fluid inlets;
a plurality of distinct fluid channels, each fluid channel to provide fluid communication between the plurality of fluid inlets and the fluidic die;
wherein a first fluid channel of the plurality of distinct fluid channels to receive a first printing fluid and a second fluid channel of the plurality of distinct fluid channels to receive a second printing fluid, the first fluid channel comprising a fluid channel of a first circulation type and the second fluid channel comprising a fluid channel of a second circulation type,
wherein the fluidic die comprises a plurality of fluid passage trunks in fluid communication with a plurality of ejection chambers, each of the plurality of fluid passage trunks corresponding to a distinct fluid channel of the plurality of distinct fluid channels, and
wherein each fluid passage trunk of the plurality of fluid passage trunks is to direct flow of printing fluid in a direction opposite of that of adjacent fluid passage trunks.

8. The fluid ejection device of claim 7 , wherein the first printing fluid comprises black and the first circulation type comprises macrorecirculation, and the second printing fluid comprises one of cyan, magenta, or yellow and the second circulation type comprises non-recirculation.

9. The fluid ejection device of claim 7 , wherein the first printing fluid comprises a first solid level above a threshold and the first circulation type comprises microrecirculation, macrorecirculation, or a combination thereof.

10. The fluid ejection device of claim 7 , wherein the first printing fluid comprises a clear printing fluid and the first circulation type comprises microrecirculation, macrorecirculation, or a combination thereof, and the second printing fluid comprises one of black, cyan, magenta, or yellow, and the second circulation type comprises macrorecirculation or non-recirculation.

11. The fluid ejection device of claim 7 , wherein the fluidic die comprises a plurality of ejection chambers having an ejection orifice, the ejection orifice for a subset of the plurality of ejection chambers comprising a low drop weight (LDW) ejection orifice; and
wherein the first fluid channel corresponds to the subset of ejection chambers comprising the LDW ejection orifice and the first circulation type comprises microrecirculation, macrorecirculation, or a combination thereof.

12. A fluid ejection system comprising:
a plurality of fluid reservoirs;
a fluid ejection device comprising a plurality of fluid inlets in fluid communication with the plurality of fluid reservoirs, the fluid ejection device further comprising:
a fluidic die comprising a plurality of fluid ejection chambers, a first set of fluid ejection chambers in fluid communication with a first fluid inlet of the plurality of fluid inlets and a first fluid reservoir of the plurality of fluid reservoirs, a second set of fluid ejection chambers in fluid communication with a second fluid inlet of the plurality of fluid inlets and a second fluid reservoir of the plurality of fluid reservoirs;
a fluid channel of a first circulation type corresponding to the first fluid inlet and the first set of fluid ejection chambers;
a fluid channel of a second circulation type corresponding to the second fluid inlet and the second set of fluid ejection chambers; and
a fluid interposer layer in contact with the fluidic die, the fluid interposer layer comprising fluid paths in fluid communication with the plurality of fluid inlets, wherein a subset of the fluid paths are connected to fluid return passages to direct print fluid away from the first set of fluid ejection chambers and to a first fluid outlet.

Assignees

• Hewlett Packard Development Co

Inventors

• Anderson Daryl Eugene
• Przybyla James R
• Martin Eric T
• Clark Garrett E

Classifications

• B41J2/2114

  Ejecting specialized liquids, e.g. transparent or processing liquids (B41J2/211 takes precedence) · CPC title

• B41J2/16508

  connected with the printer frame · CPC title

• B41J2/18 Primary

  Ink recirculation systems · CPC title

• B41J2202/12

  with ink circulating through the whole print head · CPC title

• B41J2002/14459

  Matrix arrangement of the pressure chambers · CPC title