Aqueous ink jet composition and method for producing recording
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Solution Overview
Problem
Ink jet printing with sublimation or disperse dyes faces limitations in producing strong colors on a wide range of recording media, as high temperatures can cause unwanted discoloration or melting of certain media, restricting the choice of recording surfaces and increasing energy consumption.
Innovation Solution
An aqueous ink jet composition with a high polyester-to-dye ratio, containing sublimation or disperse dyes, water, and polyester particles, which allows for strong color production at lower temperatures, preventing dye spread and improving productivity and energy efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If heating temperature is increased to improve color strength, then dye fixation is improved, but recording medium may undergo unwanted discoloration or melting
Solution Approach 1:
The invention changes the chemical composition parameters of the ink jet composition by incorporating polyester particles and specific additives that enable effective dye fixation at lower temperatures, thus preventing thermal damage to heat-sensitive recording media while maintaining strong color output
Solution Approach 2:
The polyester particles in the ink composition act as intermediaries that facilitate dye transfer and fixation onto the recording medium at reduced temperatures, mediating between the dye and the heat-sensitive substrate to achieve strong color without causing discoloration or melting
2Strength
If heating temperature is increased to produce strong color, then dye fixation is improved, but energy consumption increases
Solution Approach 1:
The invention modifies the ink composition parameters to include polyester and specific additives that lower the processing temperature required for effective dye fixation, thereby reducing energy consumption while maintaining strong color strength in the final recording
3Strength
If polyester content is increased to improve color strength, then dye fixation is improved, but ink composition complexity increases
Solution Approach 1:
The invention employs a composite ink composition integrating polyester particles, dyes, and functional additives in specific ratios, creating a unified formulation that achieves strong color fixation while managing composition complexity through defined parameter ranges and standardized ingredient combinations
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 strong color production on various media, including heat-sensitive materials, while reducing energy consumption and preventing dye spread, thus enhancing the flexibility and efficiency of the ink jet printing process.
Implementation Method 1
The composition achieves strong color production on various media, including heat-sensitive materials, while reducing energy consumption and preventing dye spread
Implementation Method 2
contains at least one dye composed of at least one of sublimation dyes or at least one of disperse dyes
Data Source
AI summary
An aqueous ink jet composition is provided that contains at least one dye composed of at least one of sublimation dyes or at least one of disperse dyes, polyester, and water. The polyester content is higher than or equal to 4 times and lower than or equal to 300 times the dye content. Preferably, the polyester content is 5% by mass or more and 30% by mass or less. Preferably, the dye content is 0.1% by mass or more and 7.5% by mass or less.