Winding Torque Control for Recording Medium Tension
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Solution Overview
Problem
Existing recording apparatuses face challenges in maintaining a consistent tension on the recording medium during winding, leading to defects like wrinkles, winding deviation, and banding, especially when using movable tension rollers.
Innovation Solution
A recording apparatus with a control section that synchronizes the torque limit threshold of the winding section with the operation of the transportation section, allowing for appropriate torque adjustments during acceleration, constant speed, and deceleration drives to apply desired tension without a movable tension roller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a movable tension roller is used to apply tension to the recording medium, then tension can be applied to suppress defects, but it becomes difficult to maintain consistent desired tension and the device complexity increases
Solution Approach 1:
The invention removes the movable tension roller from the system entirely. Instead of using a mechanical tensioning device, the patent extracts this component and replaces it with a control method that adjusts the torque limit threshold of the winding section based on the transportation section's operational state, thereby simplifying the device while maintaining tension consistency.
Solution Approach 2:
The invention changes the control parameter from mechanical tension (via movable roller position) to torque limit threshold (via control section). By dynamically adjusting the torque limit threshold according to the transportation section's speed and operational phase, the system maintains consistent tension on the recording medium without requiring complex mechanical tensioning devices.
2Ease of operation
If the torque limit threshold is fixed during winding, then control is simple, but appropriate tension cannot be applied during different operational phases (acceleration, constant speed, deceleration)
Solution Approach 1:
The invention makes the torque limit threshold dynamic rather than fixed. The control section adjusts the torque limit threshold in real-time based on the transportation section's operational phase (acceleration, constant speed, or deceleration), allowing the system to maintain appropriate tension control throughout different winding conditions while keeping the control logic relatively simple.
Solution Approach 2:
The system implements feedback control by monitoring the transportation section's operational state and using this information to adjust the torque limit threshold accordingly. The control section receives information about the transportation phase and dynamically modifies the torque limit to maintain optimal tension, creating a closed-loop control system that improves precision without excessive complexity.
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 effectively suppresses defects in the wound recording medium by ensuring a stable and appropriate tension is applied, improving the winding process without relying on movable tension rollers.
Implementation Method 1
the control section switches a threshold of a torque limit of the winding section when winding the recording medium at the winding section by synchronizing with an operation of the transportation section
Data Source
AI summary
A recording apparatus includes a transportation section of a recording medium; a winding section of the recording medium; and a control section that controls transportation of the recording medium by controlling the transportation section and the winding section. The control section switches a threshold of a torque limit of the winding section when winding the recording medium at the winding section by synchronizing with an operation of the transportation section. According to the recording apparatus having such a configuration, an occurrence of defects is suppressed when winding the recording medium.