Solvent-Based Ink Composition Set for Warm Color Reproduction
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Solution Overview
Problem
Existing ink jet recording technologies face challenges in achieving both high color reproducibility, particularly for warm colors, and weatherability when using solvent-based ink compositions, especially for outdoor applications where exposure to rain and sunlight is common.
Innovation Solution
A combination of solvent-based orange and red ink compositions, utilizing specific solvents like alkylene glycol diethers and lactone compounds, is used to enhance color reproduction and weatherability by improving drying performance, abrasion resistance, and reducing aggregation unevenness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If solvent-based orange ink composition is used to improve color reproduction for warm colors, then color reproducibility is improved, but weatherability deteriorates
Solution Approach 1:
The patent applies parameter changes by carefully controlling the chroma of the orange ink within a specific range (10-80) and adjusting the hue angle to balance color reproduction quality with weatherability. This optimization of color parameters allows achieving satisfactory warm color reproduction while maintaining acceptable weatherability for outdoor applications
Solution Approach 2:
The patent uses composite materials by combining multiple ink compositions (orange, red, and other colors) with specifically selected solvents and additives. The orange ink composition contains a mixture of solvents including glycol diethers, carboxylic acid esters, and ketones, creating a composite formulation that achieves both good color reproduction and improved weatherability compared to single-component inks
2Ease of operation
If solvent-based ink composition is used to achieve good adaptability to vinyl chloride-based recording medium, then ease of operation is improved, but weatherability deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the solvent system by incorporating specific ratios of glycol diethers, carboxylic acid esters, and ketones. This optimized solvent composition maintains excellent adaptability to vinyl chloride-based recording media while significantly improving the weatherability of the recorded images, allowing outdoor durability
3Reliability
If Pigment Orange 43 is used to improve weatherability of orange ink, then weatherability is improved, but color reproduction in warm colors deteriorates
Solution Approach 1:
The patent optimizes the chroma parameter of the orange ink to a specific range (10-80) and adjusts the hue angle to achieve a balance between weatherability and color reproduction. By controlling these color parameters, the patent ensures that the orange ink maintains both adequate weatherability and satisfactory warm color reproduction capabilities
Solution Approach 2:
The patent employs composite materials by combining Pigment Orange 43 with other pigments and using a mixed solvent system. This composite approach allows the orange ink to achieve both improved weatherability through the pigment selection and maintained color reproduction through the synergistic effect of the composite formulation including multiple solvents and additives
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 set achieves excellent color reproducibility and weatherability, extending the color reproduction range for warm colors and improving the durability of images, especially in outdoor conditions.
Implementation Method 1
a solvent-based ink jet ink composition which contains a volatile solvent (mainly organic solvent) as a main component and which performs recording by causing the solvent-based ink jet ink composition to adhere to a recording medium, and then fixing the solid content by drying the solvent by heating or at normal temperature
Data Source
AI summary
An ink composition set has at least a solvent-based orange ink composition containing an orange pigment as a pigment and a solvent and a solvent-based red ink composition containing a red pigment as a pigment and a solvent.