Document Feeding Double Feed Detection and User Notification
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Solution Overview
Problem
Image reading apparatuses face the challenge of double feed detection, where documents are fed overlappingly, leading to reoccurrence of the issue during re-reading after user intervention, due to adhesive forces between documents.
Innovation Solution
The apparatus includes a detection unit for double feeds and a notification system that prompts users to loosen documents when a double feed is detected, using a guide screen to illustrate how to separate the documents, thereby preventing reoccurrence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the apparatus stops conveyance upon detecting double feed and notifies the user, then the double feed detection function is improved, but the productivity deteriorates due to interruption and re-reading
Solution Approach 1:
The system provides feedback to the user by displaying notification messages that explain the cause of double feed (adhesive force between documents) and guide the user to separate the documents. This feedback loop helps users understand the problem and take appropriate corrective action, reducing re-occurrence and improving overall productivity.
2Ease of operation
If the user resets double-fed documents without loosening them, then the operation is simple, but the double feed reoccurs during re-reading
Solution Approach 1:
The system performs preliminary action by notifying the user in advance about the need to loosen documents before re-reading. The notification message explicitly instructs users to separate the documents to eliminate adhesive forces, preventing double feed re-occurrence before the re-reading operation begins.
3Reliability
If the apparatus provides detailed notification about loosening documents, then the double feed suppression is improved, but the device complexity increases
Solution Approach 1:
The notification system uses self-service by providing clear, instructional messages that guide users through the document loosening process. The system automatically detects double feed conditions and provides tailored notifications based on the detection results, reducing the need for complex user interfaces or manual intervention.
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 the reoccurrence of double feeds by informing users to loosen documents, ensuring accurate and uninterrupted document reading.
Implementation Method 1
a double feed detection sensor that detects an occurrence of a double feed of the documents
Data Source
AI summary
An image reading apparatus includes a document tray on which a plurality of documents is stacked, a feeding unit that feeds the documents on the document tray, a detection unit that detects a double feed of the documents fed by the feeding unit, and a notification unit that issues a notification prompting a user to loosen the documents when the detection unit detects the double feed.