Transfer Medium Production Wet-on-Wet Ink Adhesion
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Solution Overview
Problem
Conventional methods for producing transfer media require a heating process to evaporate moisture from ink, which slows down printing speed and reduces productivity.
Innovation Solution
A transfer medium producing apparatus and method that employs a wet on wet method, where ink and adhesive solution are ejected and applied simultaneously without the need for heating, using an ink ejection unit and an adhesive solution application unit controlled by a control unit to improve productivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heating process is used to evaporate moisture from ink, then the ink can be properly dried, but the printing speed decreases and productivity is reduced
Solution Approach 1:
The invention extracts and removes the heating step from the conventional transfer medium production process. By using a wet-on-wet method where adhesive solution is applied immediately after ink ejection without intermediate drying, the patent eliminates the heating apparatus and heating time, thereby resolving the contradiction between ensuring ink drying quality and maintaining high printing speed.
Solution Approach 2:
The invention performs the adhesive solution application in advance while the ink is still wet, before any drying occurs. This preliminary action of applying adhesive to wet ink allows the system to skip the drying step entirely, maintaining productivity while achieving proper adhesion through the subsequent transfer process.
2Reliability
If a heating means is provided to evaporate moisture, then ink can be dried, but the device complexity increases
Solution Approach 1:
The invention extracts and removes the heating means (heater, heating chamber, temperature control systems) from the transfer medium production apparatus. By adopting a wet-on-wet process where adhesive is applied to wet ink, the patent eliminates complex heating apparatus while still achieving reliable ink adhesion through the transfer mechanism.
3Reliability
If the peelable sheet conveyance speed is slowed down, then moisture can evaporate, but productivity decreases
Solution Approach 1:
The invention performs adhesive solution application as a preliminary action immediately after ink ejection, while the ink is still wet and before any evaporation occurs. This eliminates the need to slow down conveyance for moisture evaporation, allowing the peelable sheet to move at high speed throughout the process while still achieving proper adhesion.
Solution Approach 2:
The invention extracts the moisture evaporation step from the production process. By using adhesive solution that bonds effectively to wet ink, the patent removes the requirement for slowing down conveyance to allow evaporation, thereby maintaining high productivity without compromising adhesion quality.
Data Source
AI summary
A transfer medium producing apparatus is equipped with an ink ejection unit 20 that ejects ink onto a peelable sheet, an adhesive solution application unit 30 that applies an adhesive solution onto the peelable sheet onto which the ink has been ejected, and a control unit 2 that controls the ejection of ink and the application of the adhesive solution to be performed by a wet on wet method.