Pivotable Pressing Member for Document Ejection Modes
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Solution Overview
Problem
Conventional document feeding devices face performance deterioration when switching between stacking and sliding ejection modes due to the use of a pressing plate, which hampers smooth document ejection, especially when documents have curl or are not properly pressed down.
Innovation Solution
A document feeding device with a configurable ejection mechanism that includes a pressing member pivotable up and down, allowing for two ejection modes: stacking and sliding, where the pressing member is used to press down documents in the stacking mode and retracted in the sliding mode, ensuring consistent and smooth document ejection without performance degradation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressing plate is used to press down documents on the output tray, then document stacking is improved, but document ejection performance deteriorates when sliding mode is required
Solution Approach 1:
The pressing member is made pivotable between a first position (pressing state) and a second position (retracted state), allowing the system to dynamically switch between stacking mode and sliding mode based on operational requirements, thereby resolving the contradiction between maintaining document stacking reliability and ensuring smooth document ejection
2Reliability
If the pressing member is positioned to press down documents, then stacking performance is improved, but smooth sliding of documents under the stack is hampered
Solution Approach 1:
The pressing member transitions from a static pressing plate to a dynamic pivotable member that can be retracted to the second position when sliding operation is required, eliminating the obstruction to smooth sliding while maintaining stacking capability when needed
Data Source
AI summary
A document feeding device comprises an input tray, an output tray, a feeding mechanism for a feeding path, a turnover mechanism for a turnover path, ejection rollers, and an ejection mechanism. The ejection mechanism switches between a first ejection mode (for successively ejecting each document while stacking the document on documents previously ejected to the output tray) and a second ejection mode (for successively ejecting each document while sliding the document under the previously ejected documents) by relatively moving a nipping position of the ejection rollers and an upstream end of the output tray in the vertical direction. Also included are a pressing member which is pivotable up and down on the downstream side of the ejection rollers and which presses down the ejected documents in the first ejection mode, and a retracting mechanism which retracts the pressing member by pivoting the pressing member upward in the second ejection mode.