Cantilever Temperature Sensor Resin Layer for Roller Vibration
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Solution Overview
Problem
Existing fixing devices in image forming apparatuses face challenges in accurately measuring the temperature of heating and pressing rollers due to the stick-slip phenomenon, which can lead to vibrations and inaccuracies in temperature detection.
Innovation Solution
Incorporation of a measuring member with a cantilever structure supported by guiding plates and a supporting member, where the contact portions are made of resin materials with lower heat transfer coefficients, to mitigate the stick-slip effect and stabilize temperature measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a measuring member with contact structure is used to measure the temperature of the heating member, then temperature measurement capability is achieved, but vibrations and measurement inaccuracies occur due to the stick-slip phenomenon
Solution Approach 1:
A resin layer is introduced as an intermediary between the measuring member's contact portion and the heating member's surface. This resin layer acts as a mediator that reduces the stick-slip phenomenon by providing a smoother, lower-friction interface, thereby stabilizing the measuring member and improving temperature measurement reliability without sacrificing measurement capability
2Measurement precision
If the measuring member directly contacts the heating member, then temperature measurement is enabled, but the stick-slip phenomenon causes vibrations that reduce measurement accuracy
Solution Approach 1:
The resin layer serves as a mediator that directly addresses the stick-slip phenomenon by providing a low-friction contact interface between the measuring member and heating member. This intermediary layer reduces vibrations and stabilizes the measurement process, thereby improving temperature detection accuracy
3Loss of information
If conventional contact-based temperature measurement is used, then temperature data can be obtained, but the measuring member experiences vibrations that lead to detection errors
Solution Approach 1:
The resin layer acts as a mediator that eliminates the source of vibrations causing detection errors. By providing a stable, low-friction contact interface, it ensures that the measuring member remains steady during measurement, thereby preventing information loss and improving detection precision
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 configuration effectively reduces vibrations and enhances the accuracy of temperature measurement for both heating and pressing rollers, ensuring consistent and reliable image fixation in the image forming process.
Implementation Method 1
the contact portions are made of resin materials with lower heat transfer coefficients
Data Source
AI summary
A fixing device includes a heating member that heats a recording medium having an image while transporting the recording medium by rotating; a measuring member that measures a temperature of the heating member and includes a body member, and a cantilever member whose base end is fixed to the body member and whose free end is in contact with the heating member; and a supporting member that supports the measuring member and includes a contact portion, the contact portion being in contact with a base portion of the cantilever member.