Cyan Dye Ink Composition for Stable Ejection and Print Density
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Solution Overview
Problem
Dye ink compositions used in large-volume inkjet printers face challenges with continuous ejection stability and storage stability, failing to maintain high printing density on both ink jet paper and plain paper over time.
Innovation Solution
A dye ink composition comprising specific compounds represented by general formulas (I-1) to (I-5) with controlled mass ratios and ionic hydrophilic groups, enhancing molecular interaction and stability, allowing for high printing density and continuous ejection stability on both paper types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If dye ink compositions are used in large-volume inkjet printers, then printing cost is reduced due to less frequent ink cartridge replacement, but continuous ejection stability and storage stability deteriorate
Solution Approach 1:
The patent modifies the chemical parameters of the dye ink composition by incorporating specific compounds with ionic hydrophilic groups (compounds of formulas I-1 to I-5) and controlling their mass ratios. This changes the molecular interaction and stability characteristics of the ink, enabling it to maintain continuous ejection stability and storage stability even in large-volume tanks over extended periods
Solution Approach 2:
The patent creates a composite dye ink system by combining multiple specific compounds (formulas I-1 to I-5) with water in defined mass ratios. This composite formulation enhances both continuous ejection stability and storage stability, resolving the reliability issue that would otherwise prevent use in large-volume printers
2Manufacturing precision
If dye ink compositions are designed for high printing density, then image quality improves, but stability over time deteriorates
Solution Approach 1:
The patent optimizes the chemical composition parameters by selecting specific compounds with ionic hydrophilic groups and controlling their mass ratios. This parameter optimization enables the ink to achieve high printing density on both ink jet paper and plain paper while simultaneously maintaining storage stability over extended periods
3Loss of energy
If ink remains in large-volume tanks for long periods, then printing cost decreases, but storage stability deteriorates
Solution Approach 1:
The patent incorporates stability-enhancing compounds (formulas I-1 to I-5) and optimizes their ratios in advance during ink formulation. This preliminary chemical preparation ensures that the ink maintains its stability properties throughout extended storage periods in large-volume tanks, preventing degradation that would otherwise occur over 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
The composition achieves stable ink ejection and maintains high printing density on both ink jet paper and plain paper, even after prolonged use, by forming a high-order associate and interacting with paper fibers, thus preventing dye penetration.
Implementation Method 1
enhancing molecular interaction and stability, allowing for high printing density and continuous ejection stability
Implementation Method 2
interacting with paper fibers, thus preventing dye penetration
Data Source
AI summary
A dye ink composition includes: a compound A represented by the general formula (I-1) as defined herein; a compound B represented by the general formula (I-2) as defined herein; at least one of a compound C-I represented by the general formula (I-3-1) as defined herein or a compound C-II represented by the general formula (I-3-2) as defined herein; a compound D represented by the general formula (I-4) as defined herein; and water.