Dielectric Heating Apparatus for Uniform Ink Drying
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Solution Overview
Problem
Existing dielectric heating apparatuses face challenges in evenly heating inks containing carbon black and those without, leading to potential deviations in adhesion positions on a medium.
Innovation Solution
A dielectric heating apparatus with a first electrode unit applying an AC voltage of 300 MHz or more to heat both inks, ensuring uniform heating and preventing rapid temperature rises in inks containing carbon black.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a liquid containing carbon black is heated by dielectric heating to dry the first liquid, then the first liquid is dried efficiently, but rapid temperature rise causes uneven heating of the adhesion target
Solution Approach 1:
The patent changes the frequency parameter of the dielectric heating from conventional lower frequencies to a specific high-frequency range (300 MHz to 300 GHz). This parameter change fundamentally alters the heating mechanism, allowing simultaneous heating of both carbon black-containing and non-carbon black inks without the rapid temperature rise that causes uneven heating at lower frequencies.
Solution Approach 2:
The patent applies dynamic control by adjusting the dielectric heating frequency in real-time based on the ink composition. By using a frequency range of 300 MHz to 300 GHz, the system dynamically adapts to heat different ink types uniformly, preventing the temperature instability that occurs with fixed lower frequency heating methods.
2Productivity
If the first liquid is dried by a dielectric heating apparatus before the second liquid adheres, then the first liquid is completely dried, but the second liquid cannot adhere to the correct position and adhesion position deviation occurs
Solution Approach 1:
The patent applies preliminary action by using high-frequency dielectric heating (300 MHz to 300 GHz) that can simultaneously and uniformly heat both carbon black-containing and non-carbon black inks from the beginning. This prevents the need for sequential drying where the first ink is completely dried before the second ink adheres, thereby maintaining precise adhesion positions without deviation.
Solution Approach 2:
By changing the heating frequency parameter to 300 MHz to 300 GHz, the patent enables simultaneous uniform heating of multiple ink types. This parameter change resolves the contradiction between fast drying and position accuracy by allowing all inks to be processed together at the correct positions without sequential operations that cause misalignment.
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 apparatus efficiently heats and dries both inks without unevenness, preventing adhesion position deviations and ensuring effective fixation of pigments on the medium.
Implementation Method 1
a first voltage application unit configured to apply an AC voltage having a frequency of 300 MHz or more and 300 GHz or less to the first electrode and the second electrode
Data Source
AI summary
Provided is a dielectric heating apparatus for heating a first ink and a second ink that adhere to a medium. The first ink contains carbon black, and the second ink does not contain carbon black. The dielectric heating apparatus includes: a first electrode unit as an electrode unit configured to heat the first ink and the second ink, the first electrode unit including a first electrode and a second electrode that face the medium; and a first voltage application unit configured to apply an AC voltage having a frequency of 300 MHz or more and 300 GHz or less to the first electrode and the second electrode.