Ink Composition Cyclic Saccharide Hydantoin Bleeding Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ink jet recording on non-water-absorbing or low water-absorbing recording media such as synthetic paper and printing paper faces issues with bleeding and coalescence due to the low permeability of water-based inks, which affects image quality and stability.
Innovation Solution
An ink composition containing a cyclic saccharide, such as cyclodextrin, and hydantoin or its derivative, along with a sparingly water-soluble alkanediol, is used to improve ink permeability, stability, and re-dissolubility, reducing bleeding and beading on these media types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If water-based inks are used on non-water-absorbing or low water-absorbing recording media, then the ink composition can be simpler and more environmentally friendly, but bleeding and coalescence occur due to low permeability
Solution Approach 1:
The patent changes the chemical parameters of the ink composition by incorporating specific organic solvents (carboxylic acid esters, cyclic carbonates, cyclic carbamates) with controlled solubility parameters. These parameter changes enable the ink to achieve appropriate permeability on non-water-absorbing media while maintaining composition simplicity and preventing bleeding/coalescence through optimized solvent-mediator interactions
Solution Approach 2:
The patent creates a composite ink system combining water-based components with organic solvent components and mediating agents. This composite structure allows the ink to exhibit dual characteristics: water-based simplicity and environmental friendliness, plus organic solvent penetration capability on non-water-absorbing media, thereby resolving the contradiction between composition simplicity and image quality
2Object-affected harmful factors
If water-based inks are used on non-water-absorbing or low water-absorbing recording media, then environmental friendliness is improved, but bleeding and coalescence occur due to low permeability
Solution Approach 1:
The patent modifies the solubility and permeability parameters of the ink by adding specific organic solvents and mediating agents. This allows the ink to penetrate non-water-absorbing media effectively while maintaining the environmentally friendly water-based foundation, thus improving image quality without sacrificing environmental friendliness
Solution Approach 2:
The patent introduces mediating agents that act as intermediaries between the water-based ink and non-water-absorbing media. These mediators facilitate ink penetration into the media while preventing excessive spreading, thereby resolving the contradiction between environmental friendliness and image quality by enabling controlled permeability
3Quantity of substance
If conventional inks are used on non-water-absorbing media, then permeability is improved, but bleeding and coalescence occur affecting image stability
Solution Approach 1:
The patent optimizes the concentration parameters of organic solvents and mediating agents to achieve balanced permeability. By carefully controlling these parameters, the ink achieves sufficient penetration into non-water-absorbing media while preventing excessive spreading that causes bleeding and coalescence, thereby maintaining image stability
Solution Approach 2:
The patent applies partial action by using controlled amounts of organic solvents and mediating agents rather than excessive quantities. This partial approach provides just enough permeability enhancement without causing the harmful effects of over-penetration, thus resolving the contradiction between permeability and image stability
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 ink composition achieves high-quality image formation with reduced bleeding and beading on non-water-absorbing or low water-absorbing recording media, enhancing clogging recoverability and storage stability.
Implementation Method 1
an ink composition containing a cyclic saccharide, such as cyclodextrin
Implementation Method 2
hydantoin or a derivative thereof
Implementation Method 3
a sparingly water-soluble alkanediol
Data Source
AI summary
An ink composition includes a cyclic saccharide and hydantoin or a derivative thereof.