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Inkjet nozzle hygiene and print reliability

An inkjet printer, reliable technology, used in printing and other directions, can solve problems such as performance degradation and print quality degradation

Pending Publication Date: 2022-03-15
ASSA ABLOY AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During normal operation of an inkjet printer, the performance of the inkjet nozzles typically degrades over time (for example, by becoming clogged), which in turn reduces print quality

Method used

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  • Inkjet nozzle hygiene and print reliability
  • Inkjet nozzle hygiene and print reliability
  • Inkjet nozzle hygiene and print reliability

Examples

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Embodiment Construction

[0024] The use of pigment ink, especially inkjet printing, ink, may be challenging because the pigments in the ink may have relatively large particles. Such inks include, for example, inks comprising titanium dioxide pigments. Large particles can be precipitated from the solution and cause the nozzle (e.g., printhead nozzles, such as piezoelectric printhead nozzles) to block or reduce the opacity of the ink. Further, when some images are printed, some ink jet nozzles in the inkjet nozzle may not be used during printing, which depends, for example, on the size, shape, and / or position of the image to be printed on the substrate. When the nozzle idles the extended period of time, the nozzle may not be kept in the perfusion state, resulting in a poor injection characteristic due to the pigment settlement. In addition, when the same print job (eg, in a plurality of similar substrates, such as the same image or series image in the plastic identification card, each printing of the subs...

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PUM

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Abstract

Systems and techniques for maintaining and improving inkjet nozzle hygiene and print reliability are disclosed. The method may include monitoring whether a trigger event has occurred. In response to detecting that the trigger event has occurred, at least a portion of the ink contained in the sump tank is pumped in a direction toward the ink cartridge through a tube that connects the sump tank to the ink cartridge. The header tank is connected to a printhead included as part of a scan head. The method may also include circulating ink through the tube back into the catch tank, and wobbling the scan head by moving the scan head along the x-y gantry. Additional methods may include reverse cleaning, ejecting a portion of ink through nozzles on a printhead while wiping a nozzle plate included on the printhead, and randomizing printhead position while printing.

Description

[0001] Priority application [0002] The present application claims priority to the US temporary application sequence number 63 / 078,285, filed on September 14, 2020, which is incorporated herein by reference. Technical field [0003] The present disclosure relates to a nozzle hygiene for an inkjet printer. Background technique [0004] Inkjet printers, such as piezoelectric inkjet printers have many applications, for example, ink, for example, ink on paper and for identity cards (such as government issuance, workplace identification, etc.), such as plastic printing. During conventional operation of inkjet printers, the performance of the inkjet nozzle generally decreases over time (eg, by becoming clogged), which in turn reduces print quality. Inventive content [0005] This document describes a system and method for improving inkjet nozzle hygiene and print reliability of an inkjet printer. The system may include a processor and a memory, and the memory includes instructions s...

Claims

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Application Information

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IPC IPC(8): B41J2/01B41J2/17B41J2/165
CPCB41J2/01B41J2/1707B41J2/16538B41J2/16552B41J2/175B41J2/16517B41J2/16547B41J2/0451B41J2/04586B41J2/16535B41J2/17513B41J2/17566
Inventor 布伦特·D·利恩埃文·帕斯特查德·埃弗里特·比里布雷德利·奥哈拉凯尔斯顿·多米尼克·埃莱米诺丹耶·杰格里斯·斯奈德
Owner ASSA ABLOY AB
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