Water-Based Ink Set Composite Dyes Light Ozone Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional ink sets for ink-jet recording face issues with light resistance, ozone resistance, and hue balance, leading to poor long-term stability and color development in recorded images.
Innovation Solution
A water-based ink set comprising yellow, magenta, and cyan inks, each containing specific dyes such as C. I. Direct Yellow 86, C. I. Direct Yellow 132, and C. I. Direct Yellow 142 for yellow ink, and magenta and cyan dyes represented by specific formulas, which improve resistance and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional dyes are used in water-based ink sets, then the ink set can be manufactured easily and cost-effectively, but the light resistance, ozone resistance, and hue balance deteriorate
Solution Approach 1:
The patent uses composite dye formulations combining multiple dyes (C.I. Direct Yellow 86, C.I. Direct Yellow 132, C.I. Direct Yellow 142 for yellow ink; C.I. Direct Red 50, C.I. Direct Red 27, C.I. Acid Red 254 for magenta ink; C.I. Direct Blue 86, C.I. Direct Blue 199 for cyan ink) to achieve superior light resistance, ozone resistance, and hue balance simultaneously. This composite approach allows each dye to compensate for the weaknesses of others, resolving the contradiction between reliability and ease of manufacture.
2Stability of the object's composition
If conventional dyes are used in water-based ink sets, then the manufacturing process remains simple, but the storing stability and nozzle clogging resistance worsen
Solution Approach 1:
The patent optimizes specific parameters of the dye formulations including concentration ratios, molecular weight distributions, and chemical structures to enhance storing stability and prevent nozzle clogging. The controlled parameter changes in the composite dye system achieve improved stability without excessive formulation complexity.
3Reliability
If conventional dyes are used, then the ink set formulation is straightforward, but the color developing properties and optical density deteriorate over time
Solution Approach 1:
The patent employs composite dye materials with specific combinations of direct and acid dyes to achieve superior color developing properties and optical density that maintain stability over time. The composite formulation strategy balances performance requirements with manufacturing feasibility.
Data Source
AI summary
A water-based ink set includes a yellow ink, a magenta ink, and a cyan ink, each including a coloring agent, water, and a water-soluble organic solvent. The yellow ink includes dyes (Y-1) and (Y-2), the magenta ink includes dyes (M-1) and (M-2), and the cyan ink includes a dye (C-1).Dye (Y-1): a dye represented by the formula (Y-1)Dye (Y-2): at least one dye selected from the group consisting of C. I. Direct Yellow 86, C. I. Direct Yellow 132, and C. I. Direct Yellow 142Dye (M-1): a dye represented by the formula (M-1)Dye (M-2): at least one dye selected from the group consisting of dyes represented by a formula (M-2a), dyes represented by the formula (M-2b), C. I. Acid Red 1, and C. I. Acid Red 254Dye (C-1): a dye represented by the formula (C-1).