Primer Composition for Fast-Drying Ink on Non-Permeable Media
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ink image quality deteriorates due to beading and image unevenness when ink is not sufficiently dried, especially on non-permeable recording media, leading to issues with ethanol resistance and image degradation during cleaning and polishing.
Innovation Solution
A primer containing water, a cationic resin, a polyvalent metal salt, and a diethylene glycol alkyl ether-based organic solvent is used to enhance ink drying speed and ethanol resistance, preventing beading and improving image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If ink is printed on non-permeable recording media without sufficient drying time, then productivity increases, but image quality deteriorates due to beading and image unevenness
Solution Approach 1:
The primer is applied in advance to the recording medium surface before ink printing. This preliminary action modifies the surface properties to enhance ink drying speed and prevent beading, allowing high-speed printing without sacrificing image quality. The primer creates a prepared surface that facilitates rapid ink fixation.
Solution Approach 2:
The primer contains specific components (cationic resin, polyvalent metal salt, diethylene glycol alkyl ether-based organic solvent) that change the surface parameters of the recording medium. These parameter changes include surface energy, wettability, and drying characteristics, enabling the ink to dry rapidly and uniformly even at high printing speeds.
2Productivity
If ink is printed without sufficient drying, then productivity increases, but ethanol resistance decreases leading to image degradation during cleaning
Solution Approach 1:
The primer is applied in advance to create a surface layer that provides both rapid drying and ethanol resistance. This preliminary treatment ensures that when ink is printed at high speed, it still forms a durable image that resists ethanol-based cleaning agents.
Solution Approach 2:
The primer is a composite formulation containing cationic resin, polyvalent metal salt, and diethylene glycol alkyl ether-based organic solvent. This composite material provides multiple functions simultaneously: rapid drying, beading prevention, and ethanol resistance, resolving the contradiction between productivity and reliability.
3Ease of manufacture
If conventional primer formulations are used, then manufacturing simplicity is maintained, but beading occurs and image quality deteriorates
Solution Approach 1:
The primer uses a composite formulation with specifically selected components (cationic resin, polyvalent metal salt, diethylene glycol alkyl ether-based organic solvent) that work synergistically to prevent beading and ensure uniform image quality. While the formulation is more complex than conventional primers, each component serves a specific function that collectively solves the beading problem.
Solution Approach 2:
The primer modifies key surface parameters including surface energy, wettability, and drying rate. These parameter changes are achieved through the specific chemical composition, which creates optimal conditions for ink distribution and drying, preventing beading while maintaining ease of application.
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 primer improves ink image drying speed, prevents beading, enhances glossiness, and increases ethanol resistance, ensuring high image quality and adhesion on non-permeable surfaces.
Implementation Method 1
the diethylene glycol alkyl ether-based organic solvent causes the non-permeable recording medium to swell
Implementation Method 2
the organic solvent permeates into the non-permeable recording medium
Implementation Method 3
The primer contains both the cationic resin and the polyvalent metal salt, and thus, the ethanol resistance of the ink image is improved
Data Source
AI summary
A primer is provided that includes water, a cationic resin, a polyvalent metal salt, and a diethylene glycol alkyl ether-based organic solvent.