Cleaning roller used for cleaning liquid ejection head, cleaning device, liquid ejection device, and method for fixing cleaning sheet of liquid ejection head to roller

The cleaning roller with a recessed sheet fixing mechanism ensures compact design and effective adhesion for liquid ejection heads, addressing size and adhesion issues in existing devices, particularly for anaerobic and photophobic inks, by using fluororesin and nonwoven cellulose fiber materials.

JP2025175459APending Publication Date: 2025-12-03CANON KK
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Patent Information

Application Number
JP2024081594
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-05-20
Publication Date
2025-12-03

AI Technical Summary

Technical Problem

Existing cleaning devices for liquid ejection heads, particularly those used in manufacturing functional elements like LCD substrates and semiconductor components, are large due to the need for unwinding and winding mechanisms for roll-shaped absorbent members, and they struggle to maintain close adhesion to the discharge device surface, especially when using inks that are anaerobic or photophobic, necessitating a compact and easily replaceable solution.

Method used

A cleaning roller with a cylindrical outer surface and a recessed sheet fixing portion that allows radial movement, enabling a sheet to be fixed with circumferential tension, ensuring close adhesion and easy replacement, using materials like fluororesin and nonwoven cellulose fiber to handle organic solvent-based inks.

Benefits of technology

The solution provides a compact, easily replaceable cleaning roller that maintains high adhesion to the discharge device, effectively cleaning liquid ejection heads while minimizing device size and preventing ink contamination.

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Abstract

To provide a cleaning roller used for cleaning a liquid ejection head, which is advantageous in the replacement of an absorbing member and is advantageous in maintaining high adhesion of the absorbing member to an ejection device.SOLUTION: A cleaning roller used in a cleaning device for a liquid ejection head includes: a roller portion having a cylindrical outer peripheral surface on which a sheet for cleaning the liquid ejection head is disposed, in which a recessed portion is formed from a part of the outer peripheral surface toward a center side in a radial direction; a sheet fixing portion to which a part of the sheet is fixed and which is disposed to be movable in a radial direction in the recessed portion; and a holding portion that holds the sheet fixing portion such that a position of the sheet fixing portion in the radial direction in the recessed portion can be changed such that the sheet has tension in a circumferential direction on the outer peripheral surface.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Ink removal device, ink discharge device, and ink removal method

    JP2019199040A

  • Cleaning device and image formation apparatus

    JP2020183061A