Medium Conveyance Deflection Detection and Control
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Solution Overview
Problem
Existing medium conveying apparatuses face challenges in accurately determining deflection of fed media, such as two-folded or stapled documents, which can lead to jamming and damage during the conveyance process.
Innovation Solution
The apparatus includes a medium tray, a feed module, a motion detection module to measure changes in feeding direction and perpendicular direction, and a determination module that sets thresholds to detect deflection, stopping the feeding process when specific threshold values are exceeded.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the separation function is enabled to feed multiple media, then the feeding efficiency is improved, but the medium may not be separated properly causing jams
Solution Approach 1:
The system performs preliminary detection of the medium's state (flat, folded, stapled) before the feeding process begins. Based on this preliminary information, the control module adjusts feeding parameters or stops feeding to prevent jams, thus resolving the contradiction between maintaining high feeding efficiency and ensuring reliable separation.
2Productivity
If continuous feeding is performed without deflection detection, then the productivity is maintained, but the medium may be damaged or jamming occurs
Solution Approach 1:
The motion detection module continuously monitors the medium's movement during feeding and provides feedback to the control module. When deflection exceeding the threshold is detected, the system adjusts or stops feeding to prevent damage and jams, enabling continuous operation while protecting the medium.
3Measurement precision
If motion detection is performed in multiple directions, then the detection precision is improved, but the device complexity increases
Solution Approach 1:
The motion detection module detects deflection in two dimensions: the feeding direction (first change amount) and the direction perpendicular to the placing surface (second change amount). This multi-dimensional detection approach improves precision while keeping the device structure relatively simple by using integrated motion sensors.
Data Source
AI summary
Provided are an image processing apparatus, a control method, and a control program to accurately determine whether or not a deflection of a fed medium has occurred, and to suitably control a feeding of the medium. A medium conveying apparatus includes a feed module to feed a medium, a motion detection module to detect a first change amount in a feeding direction of the medium placed on a medium tray and a second change amount in a direction perpendicular to a placing surface of the medium tray during feeding of the medium, a determination module to determine that a deflection of the medium has occurred when the first change amount is less than a first threshold value and the second change amount is equal to or more than a second threshold value, and a control module to stop feeding the medium according to the determination result.