White Ink Jet Composition for Low-Absorbent Media
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
White ink jet ink compositions face challenges with storage stability, drying properties, and deformation issues when used on low-absorbent or non-absorbent recording media, requiring improvements in dispersion stability and clogging recoverability.
Innovation Solution
An aqueous white ink jet ink composition containing a diol-based organic solvent with a normal boiling point of 220°C or lower, resin particles with a glass transition point of 75°C or lower, and a combination of alkanolamine and inorganic alkali to enhance dispersion stability and clogging recoverability, while improving drying properties and reducing deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional white ink compositions are used, then the ink can be applied to recording media, but the storage stability is insufficient and drying properties are poor
Solution Approach 1:
The patent changes the chemical composition parameters by introducing a diol-based organic solvent with specific boiling point (220°C or lower) and controlling the glass transition point of resin particles (75°C or lower). These parameter changes resolve the contradiction by improving both storage stability through optimized composition and drying properties through controlled evaporation and curing characteristics.
Solution Approach 2:
The patent creates a composite ink composition combining water, diol-based organic solvent, white pigment, resin particles with specific glass transition point, alkanolamine, and inorganic alkali. This composite material approach allows simultaneous optimization of storage stability and drying properties by leveraging the complementary characteristics of each component.
2Adaptability or versatility
If white ink compositions are used on low-absorbent or non-absorbent recording media, then printing can be performed, but deformation such as curling occurs
Solution Approach 1:
The patent adjusts the physical parameters of the ink composition, specifically using a diol-based organic solvent with boiling point of 220°C or lower and resin particles with glass transition point of 75°C or lower. These parameter changes enable the ink to adapt to low-absorbent media while minimizing deformation by controlling the drying and curing behavior to match the substrate characteristics.
3Ease of manufacture
If the diol-based organic solvent content is increased to improve drying properties, then clogging recoverability may worsen
Solution Approach 1:
The patent optimizes the concentration parameter of the diol-based organic solvent to 60% or more while selecting solvents with specific boiling points (220°C or lower). This optimized parameter setting resolves the contradiction by achieving sufficient drying properties while maintaining clogging recoverability through the specific physical properties of the selected solvent.
Solution Approach 2:
The patent uses alkanolamine and inorganic alkali as additive components that replicate or enhance the beneficial effects of higher solvent content without the harmful side effects. These additives compensate for potential clogging issues while maintaining the drying performance achieved through the diol-based organic solvent.
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 improved storage stability, clogging recoverability, and reduced deformation of printed products, ensuring effective printing on low-absorbent media with enhanced image quality and laminate strength.
Implementation Method 1
The organic solvent contains a diol-based organic solvent. The diol-based organic solvent contains a diol-based organic solvent with a normal boiling point of 220° C. or lower.
Implementation Method 2
The resin particles contain a resin with a glass transition point of 75° C. or lower.
Data Source
AI summary
An ink jet ink composition is a white ink jet ink composition for use in printing on a recording medium that is a low-absorbent recording medium or a non-absorbent recording medium. The ink jet ink composition is an aqueous ink containing water, a white pigment, an organic solvent, resin particles, an alkanolamine, and an inorganic alkali. The organic solvent contains a diol-based organic solvent. The diol-based organic solvent contains a diol-based organic solvent with a normal boiling point of 220° C. or lower. The content of the diol-based organic solvent with a normal boiling point of 220° C. or lower is 60% by mass or more with respect to the total mass of the diol-based organic solvent. The resin particles contain a resin with a glass transition point of 75° C. or lower.