Ink Jet Recording Method Using Resin Adhesion Layer
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Solution Overview
Problem
Ink jet recording methods on low-ink-absorption or non-ink-absorption recording media face challenges with insufficient abrasion resistance and lamination strength, even when using aqueous ink compositions and resin inks.
Innovation Solution
An ink jet recording method involving the deposition of a resin liquid with a urethane-based resin and an aqueous ink composition, both with controlled organic solvent content, onto a recording medium, forming an adhesion layer that enhances wetting and spreading, and improving abrasion resistance and lamination strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an aqueous ink composition is deposited onto a low-ink-absorption or non-ink-absorption recording medium, then image recording is achieved, but abrasion resistance is insufficient
Solution Approach 1:
A resin liquid is deposited onto the recording medium before the aqueous ink composition to form an adhesion layer. This preliminary action modifies the recording medium surface to improve subsequent ink adhesion and abrasion resistance without compromising lamination strength.
Solution Approach 2:
The invention uses a composite system consisting of a resin liquid containing resin particles and an aqueous ink composition with controlled organic solvent content (≤12.0 mass%). The combination of these two materials creates synergistic effects that simultaneously improve abrasion resistance and maintain lamination strength.
2Reliability
If a resin ink is deposited onto an image formed by aqueous ink composition, then abrasion resistance is improved, but lamination strength becomes insufficient
Solution Approach 1:
Instead of depositing resin ink after aqueous ink, the invention deposits the resin liquid first to form an adhesion layer, then deposits the aqueous ink composition. This reversed sequence allows the aqueous ink to bond effectively to the resin layer while maintaining both abrasion resistance and lamination strength.
Solution Approach 2:
The invention controls the organic solvent content in the aqueous ink composition to be ≤12.0 mass%, which is a critical parameter change. This controlled solvent content ensures proper adhesion to the resin layer while maintaining the desired mechanical properties for both abrasion resistance and lamination strength.
3Ease of operation
If the organic solvent content in aqueous ink composition is increased, then wetting and spreading are improved, but abrasion resistance decreases
Solution Approach 1:
The invention optimizes the organic solvent content to be ≤12.0 mass% in the aqueous ink composition. This parameter optimization balances the wetting and spreading properties needed for good image formation while maintaining sufficient abrasion resistance through the previously formed resin adhesion layer.
Solution Approach 2:
The resin liquid acts as an intermediary layer between the recording medium and the aqueous ink composition. This intermediary layer provides a surface that enhances wetting and spreading of the aqueous ink while simultaneously providing abrasion resistance, eliminating the need for high organic solvent content.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method achieves improved abrasion resistance and lamination strength by forming a uniform adhesion layer on the recording medium, reducing residual organic solvent impact and enhancing the bonding of the ink composition, resulting in better image quality and durability.
Implementation Method 1
depositing a resin liquid onto a recording medium... forming an adhesion layer that enhances wetting and spreading
Implementation Method 2
depositing an aqueous ink composition, by using an inkjet method, on which the resin liquid was deposited
Data Source
AI summary
According to the present disclosure, an ink jet recording method includes depositing a resin liquid onto a non-absorption or low-absorption recording media and depositing an aqueous ink composition onto the recording medium by using an ink jet method, the recording medium including the resin liquid deposited on the recording medium, the aqueous ink composition having a total content of organic solvents of less than or equal to 12.0 mass % relative to the total mass of the aqueous ink composition.