Belt Device Scale Tape End Bonding
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Solution Overview
Problem
Existing image forming apparatuses face challenges in maintaining the stability and accuracy of endless belts, particularly due to the separation of scale tape ends from the belt, which affects the detection of scale patterns by optical sensors and leads to misalignment and reduced drive control precision.
Innovation Solution
Incorporating an auxiliary tape with a lower surface friction coefficient than the scale tape to cover at least one end of the scale tape on the belt, enhancing bonding strength and preventing separation, while maintaining accurate detection of scale patterns by optical sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If scale tape is bonded along the lateral edge of the belt to stabilize the belt, then belt stability is improved, but the scale tape ends separate from the belt over time, reducing detection accuracy
Solution Approach 1:
The auxiliary tape is bonded to the belt in advance at positions where scale tape separation is likely to occur (near the ends). This preliminary action prevents scale tape separation before it happens, maintaining both belt stability and detection accuracy throughout operation.
Solution Approach 2:
The auxiliary tape acts as an intermediary element between the belt and the scale tape ends. It provides additional bonding support and prevents the scale tape ends from separating, thereby maintaining detection accuracy while preserving belt stability.
2Object-affected harmful factors
If auxiliary tape with lower friction coefficient is used to cover scale tape ends, then prevention of foreign substance accumulation is improved, but bonding strength between auxiliary tape and belt must be sufficient
Solution Approach 1:
The auxiliary tape is applied locally only at the ends of the scale tape where separation and foreign substance accumulation are most likely to occur. This localized application prevents harmful effects at critical positions while maintaining sufficient bonding strength through proper adhesive selection and application methodology.
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 auxiliary tape ensures stable drive control of the belt by preventing scale tape separation and maintaining detection accuracy over time, even with the accumulation of foreign substances, thus improving the precision and reliability of the image forming process.
Implementation Method 1
The auxiliary tape has a lower surface friction coefficient than a surface friction coefficient of the scale tape
Implementation Method 2
A scale pattern is formed on the surface of the scale tape and is optically detected by an optical sensor
Data Source
AI summary
An endless rotatable belt device including an endless rotatable belt, a scale tape bonded on the belt, at least one optical sensor to detect a scale pattern, and auxiliary tape to cover at least one of the first end and the second end of the scale tape of the belt. The scale tape has a first end and a second end and includes at least one scale pattern. The auxiliary tape has a lower surface friction coefficient than the surface friction coefficient of the scale tape.