Document Discharge Notifier for Image Reading Device
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Solution Overview
Problem
Conventional image reading devices fail to effectively notify users when the last document among a batch is read, leading to confusion about whether a document has been forgotten on the discharge tray.
Innovation Solution
An image reading device with a document transport system, a document discharge tray, a detector to confirm document discharge, and a controller that activates a notifier (such as a light source) to alert the user when the last document is read and discharged, ensuring notification of forgotten documents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the notifier performs notification immediately after a job is executed (first document), then the notification is provided to the user, but the user cannot feel any change and it is difficult for the user to notice the notification until the user actually removes the document from the document discharge tray
Solution Approach 1:
The notification is activated in advance before the user removes the document from the discharge tray. The controller determines that all documents have been read and activates the notifier to notify the user of forgotten documents before the user actually takes the documents, creating a preliminary warning state that draws user attention proactively rather than reactively
Solution Approach 2:
The system continuously monitors the document discharge tray using a document discharge detector to determine when all documents have been read. This feedback mechanism tracks the reading status of each document and triggers the notification only when the detector confirms that the last document has been read, providing real-time status feedback that enables timely and accurate user notification
2Measurement precision
If a document discharge detector detects whether or not a document is discharged to the document discharge tray, then the system can track document status, but the system cannot recognize whether or not a last document of the plurality of documents is read
Solution Approach 1:
The document discharge detector provides continuous feedback to the controller about the presence or absence of documents on the discharge tray. The controller processes this feedback information to determine when the last document has been read by comparing the detection results across multiple reading cycles, thereby reconstructing the complete document reading status and identifying when the final document has been processed
Solution Approach 2:
The system uses its existing document discharge detector to automatically determine the reading status of the last document without requiring additional sensors or external intervention. The controller analyzes the detector's output signals to self-determine when all documents have been read, enabling the system to utilize its own components for enhanced functionality
Data Source
AI summary
Provided is an image reading device includes a document transport device that sequentially transports a plurality of documents one by one, and the image reading device sequentially reads the plurality of documents transported by the document transport device one by one. The image reading device includes a document discharge tray, a document discharge detector that detects whether or not a document of the plurality of documents is discharged to the document discharge tray, a notifier that notifies that the document of the plurality of documents discharged to the document discharge tray is forgotten to take, and a controller that activates the notifier if it is determined that a last document among the plurality of documents is read and the document discharge detector detects that the document of the plurality of documents is discharged to the document discharge tray.