Document Conveyance Tray Height Adjustment Mechanism
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Solution Overview
Problem
Existing document conveyance devices face difficulties in efficiently managing the height of the supply tray relative to the discharge tray, especially when the number of documents on the discharge tray is small, making it challenging for users to retrieve documents due to a narrow space between the trays.
Innovation Solution
A document conveyance device with a lifting and lowering mechanism that adjusts the supply tray's position based on the number of documents discharged, lifting it above the uppermost document when many are discharged and lowering it to a taking-out position when few are discharged to facilitate easy retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the supply tray is lowered to the lowermost position after document feeding is completed, then the space between the supply tray and the document discharge tray is maximized, but it becomes difficult for users to access and retrieve documents on the discharge tray
Solution Approach 1:
The supply tray is made dynamically adjustable in height rather than fixed at the lowermost position. The lifting and lowering mechanism enables the tray to move between different height levels based on the document stack height on the discharge tray, optimizing both space utilization and user accessibility.
Solution Approach 2:
The height parameter of the supply tray is changed based on the number of documents on the discharge tray. When documents are discharged and form a stack above a predetermined height, the supply tray is lifted to a higher position, creating adequate space for user access while maintaining compact configuration when the discharge tray is empty or has few documents.
2Quantity of substance
If the supply tray is lifted to accommodate more documents, then the document storage capacity is increased, but the space for user access to the discharge tray is reduced
Solution Approach 1:
The supply tray height is dynamically adjusted based on the document stack height on the discharge tray. The lifting and lowering mechanism responds to the actual usage condition (number of discharged documents) to optimize the balance between storage capacity and user accessibility.
Solution Approach 2:
The height parameter of the supply tray is changed in response to the document quantity on the discharge tray. When the discharged document stack exceeds a predetermined height, the supply tray is lifted to create sufficient clearance for user access, thereby adapting the storage configuration to actual usage conditions.
3Ease of operation
If the supply tray remains at a fixed high position, then user access to the discharge tray is maintained, but the ability to accommodate varying document volumes is reduced
Solution Approach 1:
The supply tray is transformed from a fixed position to a dynamically adjustable position. The lifting and lowering mechanism enables the tray to adapt its height based on the document volume on the discharge tray, providing both user accessibility and adaptability to varying document volumes.
Solution Approach 2:
The height parameter of the supply tray is made variable and is adjusted according to the number of documents on the discharge tray. This parameter change enables the system to maintain user accessibility while adapting to different document volumes, resolving the contradiction between fixed accessibility and volume adaptability.
Data Source
AI summary
A document conveyance device includes a supply tray, a discharge tray, a conveyance part, a discharge part, and a lifting and lowering part. The lifting and lowering part lifts the supply tray and the discharge part according to a feeding of the document. When the feeding of the document to the document conveyance path is completed and then the supply tray is lifted, in a small number of documents discharge state where the height of the documents stacked on the discharge tray is less than the specified value, the lifting and lowering part positions the supply tray at a taking out position depart upward from the specified value by a predetermined space.