Ink jet recording method, ink jet recording apparatus, and aqueous ink

The inkjet recording method employs a gas-permeable membrane to address bubble trapping in inkjet devices, enhancing suction recovery and ink ejection stability by efficiently removing bubbles, thus improving productivity.

JP2026025898APending Publication Date: 2026-02-16CANON KK
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Patent Information

Application Number
JP2025100390
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-07-31
Filing Date
2025-06-16
Publication Date
2026-02-16

AI Technical Summary

Technical Problem

Existing inkjet recording devices face issues with bubble trapping in the ink flow path, leading to insufficient ink ejection performance and reduced productivity due to frequent suction recovery processes, which are not adequately addressed by existing degassing units.

Method used

An inkjet recording method using a recording head with a gas-permeable membrane of 0.01 mm or more thickness, positioned between a liquid storage chamber and a decompression chamber, where the surface tension of the ink and surface energy of the membrane satisfy the relationship gamma_i - gamma_m <= 11, effectively removing bubbles through pressure reduction.

Benefits of technology

The method enhances suction recovery properties and ink ejection stability by efficiently removing bubbles with minimal suction recovery operations, improving productivity and reducing ink wastage.

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Abstract

To provide an inkjet recording method excellent in suction recovery properties and ink discharge stability.SOLUTION: Using an ink jet recording apparatus including a recording head including an ejection orifice for ejecting an aqueous ink, a pressure chamber communicating with the ejection orifice, an ejection device disposed in the pressure chamber and generating energy for ejecting the aqueous ink from the ejection orifice, a liquid storage chamber capable of supplying the aqueous ink to the pressure chamber, a decompression chamber disposed adjacent to the liquid storage chamber and configured to be capable of decompressing the inside thereof, and a gas permeable membrane having a thickness of 0. 01mm or more disposed at a boundary between the liquid storage chamber and the decompression chamber, An ink jet recording method includes applying an aqueous ink ejected from an ejection orifice to a recording medium to record an image. The surface tension γ I (mN / m) of the aqueous ink at 25 °C. and the surface energy γ m (mN / m) of the gas-permeable membrane satisfy the relationship of the following formula (1). Γ I - γ m ≤ 11 (1) SELECTED DRAWING: None
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