Ink Jet Black Ink Composition for Sublimation Transfer
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Solution Overview
Problem
Existing ink jet black ink compositions for sublimation transfer face challenges in achieving good intermittent characteristics and providing dyed articles with high black density and appropriate tinge.
Innovation Solution
The ink composition includes water, a water-soluble organic solvent, C.I. Disperse Blue 360, and two or more disperse dyes such as C.I. Disperse Orange 25 and C.I. Disperse Brown 27, which achieve low reflectance at specific wavelengths, optimizing the mass ratio and content to enhance black density and tinge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ink compositions are used, then basic printing function is maintained, but intermittent characteristics are poor and black density is insufficient
Solution Approach 1:
The patent changes the chemical parameters of the ink composition by introducing specific disperse dyes (C.I. Disperse Blue 360, C.I. Disperse Orange 25, C.I. Disperse Brown 27) with defined mass ratios (A=1.0 to 3.0, B=0.5 to 2.0, C=0.5 to 2.0) and total content (4.0 to 8.0 mass%). This parameter optimization resolves the contradiction by achieving both good intermittent characteristics and high black density simultaneously.
Solution Approach 2:
The patent uses a composite dye system combining multiple disperse dyes (C.I. Disperse Blue 360, C.I. Disperse Orange 25, C.I. Disperse Brown 27) in specific proportions. This composite approach improves intermittent characteristics while achieving superior black density and tinge, resolving the technical contradiction between reliability and manufacturing precision.
2Manufacturing precision
If conventional disperse dyes are used, then basic coloration is achieved, but tinge quality and black density are insufficient
Solution Approach 1:
The patent optimizes the mass ratios of specific disperse dyes (A=1.0 to 3.0, B=0.5 to 2.0, C=0.5 to 2.0) to achieve excellent tinge quality and black density. By controlling these parameters within specific ranges, the patent improves manufacturing precision without excessive complexity.
Solution Approach 2:
The patent assigns specific functional roles to different dye components: C.I. Disperse Blue 360 for primary blue color, C.I. Disperse Orange 25 for warm tone adjustment, and C.I. Disperse Brown 27 for black density enhancement. This local quality differentiation achieves superior tinge quality while managing composition complexity.
3Manufacturing precision
If higher dye content is used to improve black density, then black density increases, but printability and intermittent characteristics deteriorate
Solution Approach 1:
The patent optimizes the total dye content to 4.0 to 8.0 mass% and controls the mass ratios of individual dyes (A=1.0 to 3.0, B=0.5 to 2.0, C=0.5 to 2.0). This parameter optimization achieves high black density while maintaining excellent printability and intermittent characteristics, resolving the contradiction between manufacturing precision and ease of operation.
Solution Approach 2:
The patent uses specific disperse dyes with defined reflectance characteristics (C.I. Disperse Blue 360 with reflectance less than 0.1 at 380-520 nm) to achieve high black density. The controlled color composition ensures printability is maintained even at optimized dye concentrations.
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 solution results in dyed articles with high black density and improved intermittent characteristics, reducing blueness and maintaining excellent printing quality.
Implementation Method 1
two or more disperse dyes that each separately achieve a reflectance of less than 0.1 at a wavelength of 380 nm or more and 520 nm or less on a dyed article
Implementation Method 2
an ink jet black ink composition for sublimation transfer
Data Source
AI summary
An ink jet black ink composition for sublimation transfer includes water, a watersoluble organic solvent, C.I. Disperse Blue 360, and two or more disperse dyes that achieve a reflectance of less than 0.1 at a wavelength of 380 nm or more and 520 nm or less on a dyed article.