Magnetic Media Decolorizing Apparatus Temperature Control
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Solution Overview
Problem
The existing decolorizing apparatuses that heat magnetic media to decolorize images risk weakening the magnetism of the media, as high temperatures can exceed the Curie temperature, causing magnetism to be damaged, and thus, are not suitable for repeated use of expensive magnetic sheets.
Innovation Solution
A decolorizing apparatus with a control section that sets the decolorizing temperature of the fixing section to be equal to or higher than the decolorization temperature but lower than the Curie temperature of the ferromagnet in the magnetic medium, ensuring the image is decolorized without damaging the magnetism, and includes a feeding section to supply magnetic media and a transport path with spacers to prevent magnetic adhesion during handling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the magnetic medium is heated at a predetermined temperature or higher to decolorize the image, then the image is decolorized, but the magnetism of the magnetic medium is weakened
Solution Approach 1:
The patent applies parameter changes by precisely controlling the heating temperature to be at least the decolorization temperature but less than the Curie temperature of the ferromagnet. This parameter optimization allows the image to be decolorized while preserving the magnetism of the magnetic medium, resolving the contradiction between achieving decolorization and maintaining magnetic properties.
2Temperature
If high temperature is used to decolorize the image on magnetic medium, then decolorization is achieved, but the Curie temperature is exceeded causing magnetism damage
Solution Approach 1:
The patent applies preliminary anti-action by setting the heating temperature limit below the Curie temperature before the harmful effect can occur. This preventive measure ensures that the magnetism of the ferromagnet is not damaged during the decolorization process, as the temperature is controlled to stay within the safe operating range.
3Ease of operation
If magnetic medium is handled without spacers, then handling is simple, but magnetic adhesion causes transportation issues
Solution Approach 1:
The patent introduces spacers as intermediary elements between the magnetic medium and other components. These spacers prevent direct magnetic adhesion while maintaining simple handling and transportation, resolving the contradiction between operational simplicity and transportation reliability.
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
Enables the decolorization of images on magnetic media without weakening their magnetism, allowing for repeated use and reducing costs by preventing magnetism damage and ensuring reliable transportation of the media.
Implementation Method 1
The decolorizing section decolorizes a decolorable image formed on the magnetic medium by heating the magnetic medium
Implementation Method 2
controls the decolorizing section to be set to a temperature which is equal to or higher than a temperature at which the image can be decolorized and is lower than a Curie temperature of the ferromagnet of the magnetic medium during decolorizing of the magnetic medium
Implementation Method 3
a transport path with spacers to prevent magnetic adhesion during handling
Data Source
AI summary
A decolorizing apparatus of an exemplary embodiment includes a feeding section, a decolorizing section, and a control section. The feeding section can supply a magnetic medium having a ferromagnet in at least a part thereof. The decolorizing section decolorizes a decolorable image formed on the magnetic medium by heating the magnetic medium. The control section controls the decolorizing section to be set to a temperature which is equal to or higher than a temperature at which the image can be decolorized and is lower than a Curie temperature of the ferromagnet of the magnetic medium during decolorizing of the magnetic medium.