Ink Jet Recording Method for Textile Fluffing Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing ink jet recording methods for textiles face challenges in suppressing fluffing and maintaining image quality, particularly when pressure fixing is not performed, leading to complications and deterioration in image quality due to fluff movement caused by ink or reaction liquid absorption.
Innovation Solution
An ink jet recording method that involves attaching a reaction liquid containing polyvalent metal salts, cationic polymers, or organic acids, and a white ink composition with pigments or resin particles, using the ink jet method for multiple passes perpendicular to the fabric transport direction, ensuring immediate reaction and enhanced viscosity before fluff movement, with specific attachment amounts and ratios to achieve favorable image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If pressure fixing is performed to suppress fluffing, then fluffing is suppressed, but the process becomes complicated
Solution Approach 1:
The reaction liquid is applied to the fabric before the white ink composition is attached by ink jet method. This preliminary action causes the ink components to aggregate or thicken in advance, forming a thicker film that prevents fluffing without requiring subsequent pressure fixing treatment, thereby simplifying the overall process while maintaining image quality
Solution Approach 2:
The reaction liquid acts as an intermediary substance between the fabric and the white ink composition. It contains aggregation agents that cause ink components to aggregate, forming a thicker film that suppresses fluffing. This intermediary approach replaces the need for mechanical pressure fixing while achieving the same fluff suppression effect
2Device complexity
If pressure fixing is not performed to simplify the process, then the process is simplified, but fluffing occurs and image quality deteriorates
Solution Approach 1:
The invention changes the physical and chemical parameters of the ink system by introducing a reaction liquid containing aggregation agents (polyvalent metal salts, cationic polymers, or organic acids). These agents cause ink components to aggregate and thicken, increasing the ink film thickness and adhesion, which suppresses fluffing without requiring pressure fixing, thus maintaining image quality while simplifying the process
Solution Approach 2:
The reaction liquid is applied in advance to the fabric before ink jet attachment. This preliminary treatment allows the aggregation agents to interact with the fabric and prepare the surface for ink attachment, creating conditions that prevent fluffing during and after ink drying without requiring subsequent pressure fixing
3Quantity of substance
If multiple passes are performed to ensure sufficient attachment, then attachment amount increases, but processing time increases
Solution Approach 1:
The invention merges the application of reaction liquid and white ink composition into a single integrated process. Both substances are attached to the same scanning region by the same main scanning operation, allowing the ink components to immediately react with the aggregation agents in the reaction liquid. This merging achieves sufficient attachment amount (≥20 mg/inch²) in one pass rather than requiring multiple separate passes, thereby reducing processing time
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
This method effectively suppresses fluffing and enhances image quality by ensuring sufficient attachment of the reaction liquid and ink composition, maintaining whiteness and preventing nozzle clogging, as demonstrated by the examples with favorable L* values and standing reliability.
Implementation Method 1
a reaction liquid for aggregating or thickening an ink component
Implementation Method 2
the reaction liquid contains one or more selected from a polyvalent metal salt, a cationic polymer, and an organic acid as an aggregation agent
Implementation Method 3
a first liquid droplet to a first position on the fabric and a second liquid droplet to a second position on the fabric are different in a difference in landing time
Data Source
AI summary
An ink jet recording method according to an embodiment of the present disclosure includes a reaction liquid attachment step of attaching a reaction liquid to a fabric and an ink attachment step of attaching a white ink composition to the fabric with the attached reaction liquid, wherein the reaction liquid contains one or more selected from a polyvalent metal salt, a cationic polymer, and an organic acid as an aggregation agent, the white ink composition contains one or both of a white pigment and a resin particle, the reaction liquid attachment step and the ink attachment step are performed by an ink jet method, the ink jet method performs main scanning a plurality of times, the main scanning performing recording by moving an ink jet head in a direction perpendicular to a transport direction of the fabric, the reaction liquid and the white ink composition are attached to the same scanning region of the fabric by the same main scanning, the same main scanning is performed a plurality of times with respect to the same scanning region, and(amount of attachment in first pass)>(amount of attachment in nth pass)(amount of attachment in first pass)+(amount of attachment in nth pass)≥20 mg/inch2,where a total amount of attachment per unit area of the reaction liquid and the white ink composition that are attached to the fabric by the first main scanning with respect to the same scanning region is denoted by “amount of attachment in first pass”, and a total amount of attachment per unit area of the reaction liquid and the white ink composition that are attached to the fabric by the nth main scanning is denoted by “amount of attachment in nth pass”, n being an integer of 2 or more.