Water-Based Dye Ink Set with Cationic Fixing Agent for Cloth Recording
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Solution Overview
Problem
Existing ink-jet recording methods using water-based dye inks face challenges when recording on materials other than paper, as the color fades upon washing and there is significant color difference between paper and non-paper surfaces.
Innovation Solution
A water-based ink set containing direct or acid dyes, combined with a fixing agent featuring a cationic compound represented by Formula (1), which includes hydrocarbon groups and an anion, is used for ink-jet recording, allowing for stable color retention on various surfaces, including cloth, by applying the fixing agent before ink discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If water-based dye ink is used for recording on cloth, then the recording can be performed on non-paper surfaces, but the color is lost when the cloth is washed with water
Solution Approach 1:
A fixing agent containing a cationic compound (Formula 1) is introduced as an intermediary substance between the water-based dye ink and the cloth recording medium. The fixing agent applies the cationic compound to the cloth before ink discharge, creating a mediator layer that enables the ink to adhere to the cloth without direct harmful interaction, thereby preventing color loss during washing while maintaining recording versatility
2Adaptability or versatility
If water-based dye ink is used for recording on cloth, then the recording can be performed on non-paper surfaces, but the color difference between paper and cloth recordings is significant
Solution Approach 1:
The fixing agent containing the cationic compound serves as a mediator that standardizes the interaction between ink and different recording mediums. By applying this intermediary layer to cloth before recording, the ink behaves more consistently on cloth as it does on paper, reducing color difference and improving color consistency across different recording medium types
3Reliability
If a fixing agent with cationic compound is applied to cloth before ink discharge, then color stability is improved and color loss is prevented, but the process complexity increases
Solution Approach 1:
The fixing agent containing the cationic compound is applied to the cloth in advance before the ink discharge process. This preliminary action prepares the recording medium with the necessary properties for ink adhesion and color fastness, eliminating the need for complex post-processing steps and simplifying the overall recording process while maintaining high reliability
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 solution ensures color stability and minimizes color difference between paper and non-paper surfaces, preventing color loss during washing and enhancing the ink's penetration and adhesion on fabrics.
Implementation Method 1
a fixing agent containing a cationic compound represented by Formula (1)... preventing color loss during washing
Implementation Method 2
enhancing the ink's penetration and adhesion on fabrics
Data Source
AI summary
An ink set of the present teaching includes a water-based ink for ink-jet recording and a fixing agent. The water-based ink for ink-jet recording contains water and at least one of a direct dye and an acid dye, and the fixing agent contains a cationic compound represented by Formula (1):wherein in Formula (1):R1 to R4 are hydrocarbon groups each having 1 to 20 carbon atoms, and are identical with each other or different from each other; andX− is an anion.