Motor-Assisted Medium Support Unit for Manual Movement
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Solution Overview
Problem
Existing recording apparatuses that rely on motor-driven medium support units impose a significant load on users when manually moving these units without motor assistance, and existing solutions like the ejection driving roller in JP-A-2014-24233 are not effective for motor-driven systems.
Innovation Solution
A recording apparatus equipped with a scale unit to recognize the position of the medium support unit, pressure detecting unit, and switch-based assist operations, allowing the motor to provide assistive forces based on user input and pressure detection to reduce the load during manual movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the medium support unit is moved manually without motor driving, then the user can move the unit independently, but a strong force is required and a load is imposed on the user
Solution Approach 1:
The motor acts as an intermediary between the user's manual input and the medium support unit. When the control unit detects manual movement via the scale unit, it activates the motor to provide assistive force, reducing the direct force burden on the user while still enabling independent movement.
Solution Approach 2:
The system dynamically switches between motor-driven mode and manual movement mode with assist. The control unit continuously monitors the scale unit to detect when manual movement occurs and adjusts motor activation accordingly, providing adaptive assistance based on real-time movement detection.
2Ease of operation
If an assist force is imparted only after the disc tray comes into contact with the ejection driving roller, then the structure is simple, but the load of the user cannot be sufficiently suppressed
Solution Approach 1:
The control unit activates the motor in advance upon detecting the start of manual movement through the scale unit, rather than waiting for contact with the ejection driving roller. This preliminary activation ensures assistive force is available from the beginning of manual movement, sufficiently reducing user load.
Solution Approach 2:
The scale unit provides continuous feedback on the position of the medium support unit, enabling the control unit to detect manual movement and activate the motor accordingly. This feedback mechanism allows the system to respond dynamically to user actions and provide appropriate assistive force.
3Ease of operation
If the assist force strength is increased to better assist manual movement, then the load on the user is reduced, but the medium support unit may be propelled by the assist force alone
Solution Approach 1:
The motor provides partial assistive force rather than full propulsion. The control unit carefully controls the motor output to provide just enough assistance to reduce user load without creating excessive force that could cause uncontrolled movement or propel the unit independently.
Solution Approach 2:
The control unit continuously monitors the scale unit feedback during manual movement and adjusts motor output in real-time. This feedback control ensures the assistive force remains within safe limits and prevents the medium support unit from being propelled by excessive assist force.
Data Source
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AI summary
A recording apparatus (1) includes a medium support unit (2) that is capable of moving by driving of a motor in a moving direction (A) and is capable of supporting a medium, a recording unit that records an image onto the medium supported on the medium support unit, and a control unit that allows the motor to execute an assist operation for assisting the movement of the medium support unit when recognizing the movement of the medium support unit without depending on the driving of the motor.