Ink jet textile printing penetrant and ink jet recording apparatus
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Solution Overview
Problem
Ink jet textile printing penetrants face challenges with discharge stability and clogging issues due to foreign matter contamination, leading to reduced performance and filter clogging in ink jet apparatuses.
Innovation Solution
The use of a water-soluble organic solvent, surfactant, and specific aromatic compounds, such as sulfonic acid aromatic compounds, in the ink jet textile printing penetrant improves conductivity and prevents impurity precipitation, enhancing discharge stability and clogging recovery while minimizing filter clogging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ink jet textile printing penetrant is used in contact with cartridge inner walls, then the penetrant can be stored and delivered, but foreign matter elutes from the cartridge into the penetrant causing poor discharge stability
Solution Approach 1:
A coating layer comprising a polymer and a silane compound is applied to the inner walls of the cartridge. This coating acts as an intermediary between the cartridge material and the penetrant, preventing foreign matter from eluting into the penetrant while maintaining penetrant storage and delivery functionality. The silane compound forms a bonding bridge between the polymer and the cartridge inner wall surface.
Solution Approach 2:
The invention creates a surface layer on the cartridge inner walls that replicates the beneficial properties of inert materials (low foreign matter elution) while maintaining compatibility with the penetrant. The coating layer copies the functional characteristics needed for stable penetrant storage without requiring the entire cartridge to be made from expensive inert materials.
2Ease of manufacture
If inexpensive materials are used for cartridge constituent members, then manufacturing cost is reduced, but foreign matter elutes into the penetrant reducing discharge stability
Solution Approach 1:
The cartridge inner wall surface is segmented into two functional layers: a bulk material layer providing structural integrity and cost-effectiveness, and a surface coating layer providing chemical inertness and low foreign matter elution. This segmentation allows use of inexpensive bulk materials while maintaining high reliability through the protective coating.
Solution Approach 2:
The coating layer is applied locally to the inner walls of the cartridge where contact with penetrant occurs. This localized treatment provides the necessary chemical resistance and low elution properties only where needed, rather than requiring the entire cartridge to be made from expensive inert materials throughout.
3Reliability
If the penetrant formulation is modified to improve discharge stability, then foreign matter elution is reduced, but the complexity of the penetrant composition increases
Solution Approach 1:
Instead of modifying the penetrant composition to prevent foreign matter elution, the invention introduces a coating layer as an intermediary between the cartridge and penetrant. This approach maintains penetrant formulation simplicity while achieving discharge stability through the protective barrier function of the coating.
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 formulation achieves excellent discharge stability and clogging recovery, reducing the occurrence of filter clogging and maintaining penetrant transparency, thereby improving the overall performance of ink jet textile printing.
Implementation Method 1
the ink jet textile printing penetrant has a conductivity of 3 mS/cm or more
Implementation Method 2
a surfactant, and a compound which has a predetermined structure at specific amounts or more
Data Source
AI summary
An ink jet textile printing penetrant includes a water-soluble organic solvent; a surfactant; and one type or two or more types selected from the group consisting of a chelating agent and an aromatic compound.