High-Frequency Dielectric Heating Device for Uniform Ink Drying
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Solution Overview
Problem
Conventional high-frequency dielectric heating devices for inkjet printers face issues with uneven ink drying, leading to insufficient or excessive drying, which degrades print quality and results in high power consumption due to non-uniform heat application.
Innovation Solution
A high-frequency dielectric heating device with multiple power amplifiers, electrode sections, matching units, and a controller that adjusts impedance matching and power output based on detected voltage and ink distribution to ensure uniform drying without excessive power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-frequency voltage is applied uniformly to the entire heated material, then drying speed is improved, but power consumption increases and print quality degrades due to insufficient or excessive drying in different areas
Solution Approach 1:
The heated material is divided into multiple divided areas, with each area having its own electrode section and power amplifier. This segmentation allows independent control of high-frequency voltage application to each area, enabling selective heating only where ink is present and optimizing power consumption while maintaining drying speed.
Solution Approach 2:
Each electrode section is configured to apply high-frequency voltage locally to specific divided areas based on detected ink distribution. The voltage application is customized for each local area, ensuring optimal drying where needed while avoiding unnecessary power consumption in areas without ink or already dried areas.
2Productivity
If high-frequency voltage is applied uniformly to the entire heated material, then drying speed is improved, but print quality degrades due to insufficient or excessive drying in different areas
Solution Approach 1:
The heated material is divided into multiple divided areas, with each area having its own electrode section and power amplifier. This segmentation allows independent control of high-frequency voltage application to each area, enabling selective heating only where ink is present and optimizing power consumption while maintaining drying speed.
Solution Approach 2:
Each electrode section is configured to apply high-frequency voltage locally to specific divided areas based on detected ink distribution. The voltage application is customized for each local area, ensuring optimal drying where needed while avoiding unnecessary power consumption in areas without ink or already dried areas.
3Productivity
If high-frequency voltage is applied to areas without ink or already dried areas, then drying speed is maintained, but power consumption increases unnecessarily
Solution Approach 1:
The system performs preliminary detection of ink distribution across the heated material before applying high-frequency voltage. Based on this advance information, the controller activates only the electrode sections corresponding to areas with ink, preventing unnecessary power consumption in areas without ink or already dried areas while maintaining overall drying speed.
Solution Approach 2:
The system continuously detects the state of each divided area and provides feedback to the controller, which adjusts the high-frequency voltage application accordingly. This feedback mechanism ensures that power is consumed only when and where needed for actual drying, eliminating wasteful energy usage while maintaining drying speed.
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 achieves uniform ink drying, preventing print quality degradation and reducing power consumption by dynamically controlling the high-frequency electric field application based on ink distribution and drying state, ensuring efficient and consistent image formation.
Implementation Method 1
a high-frequency dielectric heating device... a high-frequency generating unit configured to generate a high-frequency electric field
Implementation Method 2
multiple power amplifiers configured to amplify the high-frequency electric field, generated by the high-frequency generating unit
Data Source
AI summary
A high-frequency dielectric heating device includes: a high-frequency generating unit to generate a high-frequency electric field; multiple power amplifiers configured to amplify the high-frequency electric field; multiple electrode sections to apply the amplified high-frequency electric field to each of divided areas on a heated material; multiple matching units to detect an incident wave and a reflected wave between the power amplifiers and the electrode sections, respectively, and conduct impedance matching; multiple voltage detecting units to detect a voltage of each of the electrode sections; and a controller to control at least any of the high-frequency generating unit and the power amplifiers in accordance with a voltage, detected by the voltage detecting units, and control a setting for the matching unit such that a reflected wave, detected by the matching unit, is zero in accordance with an incident wave and a reflected wave that are detected by the matching unit.