Treatment agent for image recording, set of ink and treatment agent for image recording, and recording method
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Solution Overview
Problem
Existing image recording methods on fabric using water-based inks face challenges in achieving both excellent water resistance and storage stability, particularly at low temperatures, with existing treatment agents often compromising on one or the other.
Innovation Solution
A treatment agent comprising a cationic polymer emulsion and a glycol-based water-soluble organic solvent with specific boiling point and concentration ratios, which improves water resistance and storage stability when used in conjunction with a water-based ink for ink-jet recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a treatment agent is used to improve water resistance in ink-jet recording on fabric, then water resistance is improved, but storage stability at low temperatures deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the treatment agent by incorporating specific glycol-based water-soluble organic solvents with controlled boiling points (not more than 200°C) and maintaining specific content ratios (20≤A≤60 where A is the content amount of glycol-based solvent). This parameter optimization allows the treatment agent to achieve both improved water resistance and maintained storage stability at low temperatures, resolving the contradiction between these two properties.
2Stability of the object's composition
If the boiling point of the water-soluble organic solvent is reduced to improve storage stability at low temperatures, then storage stability is improved, but water resistance deteriorates
Solution Approach 1:
The patent identifies and controls the boiling point parameter of the water-soluble organic solvent, specifying that it should not exceed 200°C. This parameter constraint, combined with controlling the content ratio of the glycol-based solvent, creates an optimal balance where the treatment agent maintains storage stability at low temperatures while preserving water resistance properties.
3Stability of the object's composition
If the content of glycol-based water-soluble organic solvent is increased to improve storage stability, then storage stability is improved, but water resistance deteriorates
Solution Approach 1:
The patent establishes a specific quantitative range for the glycol-based water-soluble organic solvent content, defined by the condition 20≤A≤60 where A represents the content amount percentage. This controlled parameter range ensures that sufficient glycol-based solvent is present to maintain storage stability at low temperatures, while the upper limit prevents excessive content that would compromise water resistance.
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 treatment agent enhances water resistance on fabric and maintains storage stability at low temperatures, ensuring the printed matter remains effective and durable.
Implementation Method 1
a water-soluble organic solvent including a glycol-based water-soluble organic solvent of which boiling point is not more than 200° C., the treatment agent satisfying the following condition (1): 20≤A≤60 wherein in the condition (1), A: a content amount (% by mass) of the glycol-based water-soluble organic solvent
Implementation Method 2
a cationic polymer emulsion; and a water-soluble organic solvent including a glycol-based water-soluble organic solvent
Implementation Method 3
applying the treatment agent for image recording to the fabric; drying the treatment agent for image recording applied to the fabric; and jetting the water-based ink onto the fabric
Data Source
AI summary
There is provided a treatment agent for image recording including: a cationic polymer emulsion; and a water-soluble organic solvent including a glycol-based water-soluble organic solvent of which boiling point is not more than 200° C. The treatment agent satisfies the following condition (1): 20≤A≤60. In the condition (1), A: a content amount (% by mass) of the glycol-based water-soluble organic solvent, of which boiling point is not more than 200° C., in an entire amount of the treatment agent for image recording.