Adaptive Slip Detection for Paper Jam Prediction
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Solution Overview
Problem
Conventional image forming apparatuses face inefficiencies in predicting and preventing paper jams due to the high volume of information required for accurate prediction, which can lead to unnecessary data acquisition and resource utilization.
Innovation Solution
A conveying apparatus equipped with a rotator, driver, measuring device, and circuitry that dynamically adjusts the frequency and type of information acquisition based on measured driving force, allowing for reduced data acquisition when conditions indicate lower risk of paper jams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a slip detector acquires a relatively large amount of information for prediction of paper jam, then prediction accuracy is improved, but resource usage increases
Solution Approach 1:
The patent applies dynamics by making the information acquisition frequency adaptive rather than static. The control unit dynamically adjusts the frequency at which the slip detector acquires information based on real-time driving force measurements. When abnormal driving force is detected, the system increases information acquisition frequency to improve prediction accuracy; when normal operation is detected, it reduces frequency to conserve resources.
Solution Approach 2:
The patent changes the parameter of information acquisition frequency based on driving force conditions. By monitoring driving force parameters and adjusting the information acquisition rate accordingly, the system optimizes the balance between prediction accuracy and resource consumption. This parameter adaptation allows the system to maintain high detection capability when needed while reducing overhead during normal operation.
2Reliability
If information acquisition frequency is increased for accurate paper jam prediction, then reliability is improved, but productivity decreases
Solution Approach 1:
The system dynamically adjusts information acquisition frequency based on operational conditions. During high-risk periods when abnormal driving force is detected, the system increases monitoring frequency to maintain high prediction reliability. During normal operation, it reduces frequency to minimize data processing overhead and maximize productivity, thus resolving the contradiction between reliability and productivity.
Solution Approach 2:
The patent applies partial action by acquiring information at varying frequencies rather than maintaining constant high-frequency monitoring. The system performs full monitoring only when necessary (when abnormal driving force is detected), and reduces monitoring intensity during normal operation, thereby achieving adequate reliability with improved productivity.
3Reliability
If the slip detector continuously monitors driving force, then paper jam prevention capability is improved, but device complexity increases
Solution Approach 1:
The patent makes the slip detector multi-functional by enabling it to operate at different monitoring levels based on conditions. The same hardware component performs both continuous monitoring when abnormality is detected and reduced monitoring during normal operation, eliminating the need for separate systems and reducing overall device complexity while maintaining prevention capability.
Solution Approach 2:
The monitoring system dynamically adjusts its operation mode based on driving force conditions. The control unit modifies the information acquisition frequency of the slip detector according to real-time measurements, allowing the system to maintain high paper jam prevention capability when needed while simplifying operation during normal conditions, thus reducing effective system 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 reduces the amount of data acquired at appropriate times, enhancing prediction accuracy while minimizing resource usage and preventing paper jams effectively.
Implementation Method 1
The measuring device is configured to measure the driving force applied to the rotator by the driver
Data Source
AI summary
A conveying apparatus includes a rotator, a driver, a measuring device, and circuitry. The rotator is configured to convey a medium. The driver is configured to apply a driving force to the rotator to rotate the rotator. The measuring device is configured to measure the driving force applied to the rotator by the driver. The circuitry is configured to: determine, according to the driving force measured, whether to change at least one of frequency and items of information to be acquired for prediction of a defective conveyance of the medium caused by the rotator; and acquire information of at least one of the items according to a result of determination, at a frequency according to the result of determination.