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Fluid design for recirculation in high packing density inkjet printheads

A print head and fluid path technology, applied in printing, inking devices, etc., can solve the problems of increasing the overall complexity of the fluid structure of the print head.

Active Publication Date: 2021-06-08
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This in turn can negatively impact single jet performance, jet packing density and waterfront, and increase the overall complexity of the printhead fluidic architecture

Method used

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  • Fluid design for recirculation in high packing density inkjet printheads
  • Fluid design for recirculation in high packing density inkjet printheads
  • Fluid design for recirculation in high packing density inkjet printheads

Examples

Experimental program
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Embodiment Construction

[0018] As used herein, the term "ink" refers to any material that is liquid when applied to an object intended to receive ink. Some examples of different types of inks include water-based inks, oil-based inks, solvent-based inks, UV curable inks, thermally induced phase change inks, and the like.

[0019] As used herein, the term "printhead" refers to a component of a printing or marking system configured to eject ink drops onto an object intended to receive ink drops. A typical printhead includes a plurality of single orifices configured to eject ink drops. The single jets are typically arranged in a single jet array containing one or more rows and / or one or more columns of single jets.

[0020] Figures 1 to 3 Prior art embodiments involving printhead fluidic designs generally do not utilize recirculation and lack the ability to provide recirculation entirely through a single jet structure. figure 1 A portion of a manifold structure 10 and a single orifice array 12 are sh...

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PUM

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Abstract

A printhead having: an ink source that supplies and receives ink; a first channel connected to the ink source to receive ink from the ink source; a second channel that a channel connected to the ink source to return ink to the ink source; and a manifold structure disposed between and connected to the two channels to One channel receives ink and returns ink to the second channel. A method of operating a printhead comprising: providing ink from an ink supply via a first channel to at least one finger manifold at a first pressure; directing the ink through at least one single manifold connected to the finger manifold; an inlet port of a jet; moving the ink via the single jet to a discharge port of the single nozzle connected to the finger manifold; directing the ink back from the discharge port of the single jet into the finger manifold; directing the ink from the finger manifold to a second channel; and returning ink to the ink source at a second pressure via the second channel.

Description

technical field [0001] The present disclosure relates to inkjet printheads, and more particularly, to inkjet printheads having a packing density of 300 NPI or greater. Background technique [0002] In order to jet high pigment loaded inks, and generally improve jetting latency and robustness, it is necessary to have continuous flow or recirculation of ink through the inkjet printhead. [0003] Typical schemes for achieving recirculation through a printhead involve an ink return or recirculation path in addition to the main ink supply path within the printhead. This in turn can negatively impact single jet performance, jet packing density and waterfront, and increase the overall complexity of the printhead fluidic architecture. One such example of such a printhead recycling method is described in US Patent No. 9,694,582. [0004] The current embodiments enable continuous flow or recirculation of ink through a printhead containing a single jet without requiring additional in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/18
CPCB41J2/18B41J2/14B41J2002/14459B41J2202/12B41J2002/14419B41J2/17513B41J2002/14306B41J2/1433
Inventor T·L·史蒂芬斯
Owner XEROX CORP