Pigment Ink Drying Structure to Prevent Media Thermal Denaturation
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Solution Overview
Problem
Existing drying technologies using high-frequency voltage to dry pigment ink on media risk thermal denaturation of the medium due to direct heating, which can degrade the quality of the medium.
Innovation Solution
A drying device with a heating section that vaporizes water and solvent in pigment ink by heating the medium sandwiched between first and second contact sections, followed by releasing the medium after heating to prevent thermal denaturation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-frequency voltage is supplied to generate a strong electric field for drying pigment ink, then drying efficiency is improved, but thermal denaturation of the medium may occur
Solution Approach 1:
The drying process is divided into two distinct stages: a first drying stage using high-frequency voltage to rapidly evaporate water, and a second drying stage using heat conduction to remove solvent. This segmentation allows each stage to use the most appropriate method for the specific component being removed, improving overall drying efficiency while preventing thermal denaturation by using gentler heat conduction in the second stage.
Solution Approach 2:
The drying device alternates between applying high-frequency voltage and applying heat between the heating section and the medium. This periodic action allows the medium to be dried efficiently through electric field effects when needed, while also providing opportunities for heat dissipation and preventing excessive temperature buildup that would cause thermal denaturation.
2Speed
If high-frequency voltage is used to vaporize liquid quickly, then drying speed is improved, but quality of the medium may deteriorate due to thermal damage
Solution Approach 1:
The drying process is divided into two distinct stages: a first drying stage using high-frequency voltage to rapidly evaporate water, and a second drying stage using heat conduction to remove solvent. This segmentation allows each stage to use the most appropriate method for the specific component being removed, improving overall drying efficiency while preventing thermal denaturation by using gentler heat conduction in the second stage.
Solution Approach 2:
The first contact section and second contact section serve as intermediaries between the heating section and the medium. These contact sections conduct heat to the medium in a controlled manner during the second drying stage, allowing efficient solvent removal while preventing excessive temperature buildup that would cause thermal denaturation and quality deterioration.
3Reliability
If the medium is heated continuously to vaporize both water and solvent, then complete drying is achieved, but thermal denaturation occurs
Solution Approach 1:
The drying process is divided into two distinct stages: a first drying stage using high-frequency voltage to rapidly evaporate water, and a second drying stage using heat conduction to remove solvent. This segmentation allows each stage to use the most appropriate method for the specific component being removed, improving overall drying efficiency while preventing thermal denaturation by using gentler heat conduction in the second stage.
Solution Approach 2:
The drying device changes the heating parameters between stages: in the first stage, high-frequency voltage is applied to rapidly evaporate water, while in the second stage, controlled heat conduction through contact sections is used to remove solvent at lower temperatures. This parameter change ensures complete drying of both water and solvent while preventing thermal denaturation through controlled temperature management.
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 effectively dries the medium while maintaining its quality by vaporizing water and solvent without causing thermal denaturation, enhancing drying performance and abrasion resistance.
Implementation Method 1
in a first period, vaporizes the water contained in the pigment ink by heating the pigment ink that was ejected onto the medium
Implementation Method 2
a first contact section that is provided between the heating section and the medium and that is configured to contact the medium; and a second contact section that is provided at a position sandwiching the medium with respect to the heating section and that is configured to contact the medium
Implementation Method 3
in a second period, vaporizes the solvent contained in the pigment ink by heating the pigment ink that was ejected onto the medium
Implementation Method 4
a first contact section that is provided between the heating section and the medium and that is configured to contact the medium; and a second contact section that is provided at a position sandwiching the medium with respect to the heating section and that is configured to contact the medium
Data Source
AI summary
A drying device includes a heating section that heats a medium on which was ejected pigment ink, a first contact section provided between the heating section and the medium and configured to contact the medium, and a second contact section provided at a position sandwiching the medium with respect to the heating section and configured to contact the medium. The heating section, in a first period, vaporizes water contained in the pigment ink by heating the pigment ink in a state where the medium is sandwiched between the first and second contact sections. In a second period, solvent contained in the pigment ink is vaporized by heating the pigment ink in a state where the medium is sandwiched between the first and second contact sections. The drying device releases the medium from being sandwiched by the first and second contact sections after the medium is heated.