Sheet Conveying Device Speed Control for Abnormal Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing sheet conveying devices in image forming apparatuses face challenges in accurately determining abnormal conveyance conditions, leading to potential damage to documents due to high noise levels during normal operation, which impairs the accuracy of abnormal conveyance detection.
Innovation Solution
Incorporating a sound collector and circuitry that adjusts the conveyance speed based on collected sound, slowing down the conveyor during abnormal determination operations to prevent noise interference and accurately detect deformations such as wrinkles or folds in documents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the conveyor operates at high speed during normal conveyance, then productivity is improved, but noise level increases which impairs abnormal conveyance detection accuracy
Solution Approach 1:
The system alternates between normal high-speed conveyance mode and abnormal determination mode. During abnormal determination mode, the conveyance speed is reduced to a second speed while the sound collector actively monitors for abnormalities. This periodic switching allows the system to maintain high productivity during normal operation while periodically checking for abnormalities under low-noise conditions, thus resolving the contradiction between productivity and detection accuracy.
2Measurement precision
If the conveyor speed is reduced to improve abnormal conveyance detection accuracy, then measurement precision is improved, but productivity decreases
Solution Approach 1:
The system implements periodic abnormal determination operations where the conveyor temporarily operates at a reduced second speed to allow accurate sound-based abnormality detection. After completing the abnormal determination, the system returns to normal high-speed conveyance. This periodic approach ensures that detection accuracy is maintained during monitoring phases while minimizing the impact on overall productivity by limiting the duration of reduced-speed operation.
3Measurement precision
If the sound collector operates continuously to monitor for abnormalities, then abnormal conveyance detection accuracy is improved, but noise interference increases
Solution Approach 1:
The sound collector operates in a periodic manner, actively collecting sound data only during designated abnormal determination operations when the conveyor runs at the reduced second speed. During normal high-speed conveyance, the sound collector remains inactive or in a lower-power monitoring state. This periodic activation reduces overall noise interference and energy consumption while maintaining the ability to detect abnormalities when the system transitions to the determination mode.
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 enhances the accuracy of abnormal conveyance detection, preventing document damage by reducing noise interference and allowing for higher productivity during normal operations.
Implementation Method 1
a sound collector to collect sound produced by a conveyance of the sheet
Data Source
AI summary
A novel sheet conveying device includes a conveyor, a sound collector, and circuitry. The conveyor conveys a sheet in a sheet conveyance direction. The sound collector collects sound produced by a conveyance of the sheet. The circuitry is to cause the sound collector to collect the sound in an abnormal determination operation, determine whether an abnormal conveyance occurs based on the sound collected by the sound collector in the abnormal determination operation, cause the conveyor to convey the sheet at a first speed in the sheet conveyance direction in a normal conveyance operation, and cause the conveyor to convey the sheet at a second speed slower than the first speed in the sheet conveyance direction in the abnormal determination operation.