Liquid discharge apparatus, control method, and method for manufacturing article

The liquid ejection device employs a non-contact suction nozzle controlled by a drive and suction unit to manage suction force based on ejection port positions, addressing damage and waste issues, ensuring reliable operation.

JP2025108831APending Publication Date: 2025-07-24CANON KK
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Patent Information

Application Number
JP2024002264
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-01-11
Publication Date
2025-07-24

AI Technical Summary

Technical Problem

Conventional liquid ejection devices face issues such as damage to functional films due to physical contact during cleaning and wastage of expensive ejection liquid, along with the risk of air bubbles entering ejection ports, leading to ejection failures.

Method used

A liquid ejection device with a suction nozzle that operates non-contactingly relative to the ejection unit, controlled by a drive and suction control unit to manage suction force based on the position of ejection ports, ensuring selective suction of residual droplets without damaging the ejection unit.

Benefits of technology

This approach effectively prevents ejection failures by minimizing contact and waste, maintaining reliable operation and reducing unnecessary consumption of ejection liquid.

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Abstract

To provide a technique advantageous in suppressing discharge defects caused by residual droplets.SOLUTION: A liquid discharge apparatus comprises: a discharge unit which has a plurality of discharge ports for discharging liquid on a discharge surface; a suction nozzle which suctions droplets adhering to a lower surface of the discharge unit through a suction port; a drive control unit which arranges a suction surface of the suction nozzle and the lower surface with a predetermined interval in a non-contact manner, and controls driving of at least one of the suction nozzle and the discharge unit; and a suction control unit which controls a suction state of the suction nozzle on the basis of a relative position between the discharge ports and the suction nozzle.SELECTED DRAWING: Figure 1
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