Rotation Sensor Stabilization in Recording Material Transport
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Solution Overview
Problem
The accuracy of number-of-rotation information acquisition in recording-material-transporting apparatuses is compromised when the number-of-rotation information acquisition unit is connected to the driven rotating member, as the driven member tends to move more easily than the driving member, leading to reduced accuracy in acquired rotation information.
Innovation Solution
Incorporating a restricting portion that presses the number-of-rotation information acquisition unit against a fixed surface, preventing excessive movement and maintaining the accuracy of the acquired rotation information by ensuring stable connection to the driven rotating member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the number-of-rotation information acquisition unit is connected to the driven rotating member, then the structure is simplified and easier to implement, but the accuracy of the acquired rotation information is reduced due to the driven member moving more easily
Solution Approach 1:
The restricting portion is designed to preemptively counteract the excessive movement of the number-of-rotation information acquisition unit by providing a physical constraint against the driven rotating member. This preliminary anti-action prevents the unit from moving too much during rotation, thereby maintaining measurement accuracy while keeping the connection simple.
Solution Approach 2:
The restricting portion changes the movement parameter of the number-of-rotation information acquisition unit by imposing a physical constraint. This limitation on movement range allows the unit to maintain stable contact with the driven rotating member without excessive displacement, thus preserving rotation detection accuracy despite the simplicity of connecting to the driven member.
2Stability of the object's composition
If the number-of-rotation information acquisition unit is allowed to move freely to accommodate driven rotating member movement, then the connection stability is improved, but the accuracy of rotation information is reduced
Solution Approach 1:
The restricting portion provides a preliminary counter-action to excessive movement by establishing a physical boundary. This prevents the acquisition unit from moving too far from its optimal detection position, maintaining both connection stability and measurement accuracy simultaneously.
Solution Approach 2:
By introducing the restricting portion, the movement parameter of the acquisition unit is modified. The unit is allowed to move within a controlled range but is prevented from excessive displacement, thus achieving both stability and accuracy in rotation information acquisition.
3Measurement precision
If a restricting portion is added to prevent excessive movement of the information acquisition unit, then the accuracy of rotation information is improved, but the device complexity increases
Solution Approach 1:
The driven rotating member itself serves as the restricting portion by utilizing its outer peripheral surface to physically constrain the number-of-rotation information acquisition unit. This self-service approach provides the necessary movement restriction without requiring a separate, complex restricting mechanism, thus maintaining simplicity while improving accuracy.
Solution Approach 2:
The outer peripheral surface of the driven rotating member performs multiple functions: it transmits rotational motion to the acquisition unit and simultaneously acts as a restricting portion that prevents excessive movement. This multi-functionality eliminates the need for additional components, reducing overall device complexity while maintaining measurement accuracy.
Data Source
AI summary
A recording-material-transporting apparatus includes: a transport unit that transports a recording material by using a driving rotating member that performs a rotational driving operation and a driven rotating member that rotates upon receiving a driving force from the driving rotating member; a number-of-rotation information acquisition unit that is connected to the driven rotating member and that acquires information regarding a number of rotation of the driven rotating member; and a restricting portion against which the number-of-rotation information acquisition unit is pressed and that restricts a movement of the number-of-rotation information acquisition unit.