Color Erasing Device Heat Source Temperature Control
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Solution Overview
Problem
Conventional color erasing devices face issues with temperature control due to discrepancies between detected and actual temperatures of the heat source, leading to potential overheating and attachment of resin components from color erasable toner to the erasing section.
Innovation Solution
A color erasing device with a temperature detecting section and a heat source controller that implements a power supply control strategy, including temporary shutdown of the heat source to align detected and actual temperatures, ensuring precise temperature maintenance at a target value for effective color erasure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heat source temperature is increased to ensure effective color erasure, then the color erasing efficiency is improved, but the resin component in the color erasable toner may be melted and attached to the color erasing section
Solution Approach 1:
The patent implements a feedback control system using a temperature sensor to continuously monitor the heat source temperature and feed this information back to the controller. The controller adjusts the heat source temperature based on the sensor readings, maintaining the temperature within a safe range that prevents resin attachment while ensuring effective color erasure. This closed-loop feedback mechanism resolves the contradiction by dynamically balancing erasing efficiency with prevention of harmful effects.
Solution Approach 2:
The patent changes the temperature parameter dynamically during the color erasing process. Instead of maintaining a constant high temperature, the system adjusts the temperature based on real-time sensor feedback, increasing it when needed for effective erasure and decreasing it to prevent resin melting and attachment. This dynamic parameter adjustment allows the system to achieve both high productivity and prevention of harmful effects.
2Reliability
If the heat source temperature is continuously monitored to prevent overheating, then the reliability is improved, but the device complexity increases due to additional temperature sensing and control mechanisms
Solution Approach 1:
The patent uses a temperature sensor to provide continuous feedback on the heat source temperature to the controller. This feedback mechanism enables reliable temperature control by detecting actual temperature conditions and adjusting the heat source accordingly, preventing overheating and resin attachment. The feedback approach improves reliability while keeping the control system relatively simple and integrated.
Solution Approach 2:
The temperature control system operates autonomously using the temperature sensor and controller to self-regulate the heat source temperature without external intervention. The system automatically detects temperature conditions and adjusts itself, improving reliability while minimizing the need for complex external monitoring and control mechanisms.
3Measurement precision
If the temperature sensor is positioned close to the heat source for accurate temperature detection, then the measurement precision is improved, but the risk of resin attachment to the sensor increases
Solution Approach 1:
The patent positions the temperature sensor close to the heat source to obtain accurate temperature readings, which are then fed back to the controller. The controller uses this precise feedback information to adjust the heat source temperature, preventing resin attachment. The feedback mechanism allows the sensor to be positioned close to the heat source while protecting against harmful effects through active temperature control.
Solution Approach 2:
The system performs beforehand cushioning by continuously monitoring the temperature via the sensor and proactively adjusting the heat source temperature before resin melting and attachment can occur. The feedback control prevents the temperature from reaching levels that would cause resin attachment, cushioning against this harmful effect before it can manifest.
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
This approach reduces discrepancies in temperature control, prevents overheating, and maintains the heat source at the desired temperature, enhancing the efficiency and reliability of the color erasing process.
Implementation Method 1
a heat source for heating the sheet to a temperature of 100°C to 200°C so as to erase color of the color erasable material on the sheet
Implementation Method 2
a temperature sensor for detecting a temperature of the heat source
Data Source
AI summary
According to an embodiment, a method for color erasing process includes the steps of: supplying a power to a heat source configured to heat a sheet having an image formed thereon using a color erasable material so as to cause heat generation as warming-up control; stopping the power supply to the heat source for a predetermined period of time in the warming-up control if the temperature of the heat source is increased starting from a temperature lower than a predetermined reference value that is lower than a color erasing temperature of the color erasable material and exceeds the predetermined reference value; performing maintenance control that is power supply control to maintain the temperature of the heat source at the target temperature; and performing, after the passage of the predetermined period of time, a color erasing process by the heat source.