Active energy ray curable aqueous ink, recording method, and recording apparatus

JP7875027B2Active Publication Date: 2026-06-17CANON KK
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
CANON KK
Filing Date
2022-05-18
Publication Date
2026-06-17

AI Technical Summary

Technical Problem

Existing active energy ray-curable inks face issues with water solubility and stability in aqueous systems, as well as water resistance of cured products, due to the use of specific monomers like acrylic acid ester compounds and acrylamide structures.

Method used

An active energy ray-curable aqueous ink containing a bifunctional polymerizable monomer represented by a specific general formula, which includes a divalent saturated hydrocarbon group with optional ether, amide, carbonyl, sulfone, or sulfonamide bonds, is used, along with a polymerization initiator and optional colorants, to enhance water solubility and water resistance.

Benefits of technology

The ink achieves excellent water solubility and water resistance in both monomer and cured forms, enabling stable and effective image recording.

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Patent Text Reader

Abstract

To provide an active energy ray-curable aqueous ink which is good in both water solubility of a monomer and water resistance of a cured product when used as an aqueous ink.SOLUTION: The active energy ray-curable aqueous ink contains water and a curable substance and can be cured with an active energy ray. The curable substance contains a bifunctional polymerizable monomer represented by the following general formula (1). (In the general formula (1), R1 represents a hydrogen atom or a methyl group; R2 represents a C1-5 divalent saturated hydrocarbon group; and L represents a divalent saturated hydrocarbon group optionally containing an ether bond, an amide bond, a carbonyl bond, a sulfone bond or a sulfonamide bond.)SELECTED DRAWING: Figure 1
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