Medium Reversing Device Speed Control to Prevent Paper Buckling
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Solution Overview
Problem
Mediums, such as paper, tend to fold or buckle when reversed in medium reversing and discharging devices, leading to discharge failures.
Innovation Solution
A medium reversing and discharging device that includes a discharger, a holder, and a driver, where the holder moves at a speed lower than the discharge speed, and is positioned such that the paper discharge plane does not intersect with the holding plane, preventing buckling and allowing for effective medium reversal and alignment on an exit tray.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the holder moves at a speed equal to or higher than the discharge speed, then the medium can be discharged efficiently, but the medium tends to buckle and fold during reversal
Solution Approach 1:
The holder's moving speed is dynamically adjusted to be lower than the discharge speed during the reversal process. This speed differential creates a controlled dynamic state where the medium is gradually reversed without excessive tension or folding, preventing buckling while maintaining operational efficiency
Solution Approach 2:
The patent changes the speed parameter of the holder from being equal to or higher than discharge speed to being lower than discharge speed. This parameter modification directly addresses the buckling issue by reducing the relative speed between the holder and the discharger, thereby preventing medium deformation during reversal
2Device complexity
If the holder is positioned such that the holding plane intersects with the discharge plane, then the device structure is simplified, but the medium buckles during reversal
Solution Approach 1:
The patent positions the holder such that the holding plane does not intersect with the discharge plane, creating a spatial separation in three-dimensional space. This dimensional arrangement prevents the medium from buckling by ensuring that the reversal action occurs in a different spatial plane than the discharge path, eliminating interference while maintaining structural efficiency
Data Source
AI summary
A medium reversing and discharging device includes a discharger that discharges a medium in a paper discharge direction from a discharge outlet, a holder that holds and reverses the medium, and a driver that moves the holder such that when a first plane along a portion of the medium in contact with the discharge outlet does not intersect with a second plane along a portion of the medium held by the holder on a downstream side in the paper discharge direction of the discharge outlet a moving speed at which the holder moves is lower than a discharge speed at which the medium is discharged from the discharge outlet.