Sheet Processing Apparatus Transport Guide Turning Shaft
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Solution Overview
Problem
Existing sheet processing apparatuses face instability in sheet movement due to curls, leading to unintentional direction changes and increased processing time, especially when sheets with curls are handled by pressing mechanisms with downstream pressing portions.
Innovation Solution
The apparatus incorporates a transport guide with a turning shaft located on the downstream side of the sheet transport direction, allowing the guide to press sheets toward the processing tray at a position upstream of the turning shaft, ensuring stable movement and reducing curl-related issues by guiding sheets closer to the stapler.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a pressing mechanism presses sheets at a downstream position, then sheets can be moved quickly from standby tray to processing tray, but sheets with curls may be pushed out in unintentional direction causing unstable movement
Solution Approach 1:
The pressing mechanism presses the sheet at a position upstream of the turning shaft before the sheet reaches the turning point. This preliminary pressing action prevents curls from causing the sheet to deviate in unintended directions during the subsequent movement through the turning shaft, ensuring stable and predictable sheet trajectory while maintaining efficient transfer speed.
2Productivity
If sheets are handled by conventional pressing mechanisms, then processing can be performed, but processing time increases due to unstable sheet movement and direction changes
Solution Approach 1:
By pressing the sheet upstream of the turning shaft before it reaches the critical turning point, the system prevents unstable movement and direction changes that would otherwise require additional time to correct. This preliminary action ensures smooth, predictable sheet flow through the post-processing apparatus, reducing overall processing time and increasing productivity.
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 configuration enhances the stability and efficiency of sheet movement, preventing sheets from being pushed in the opposite direction to the stapler and reducing processing time, even when sheets have curls, thereby improving the overall post-processing speed and accuracy.
Implementation Method 1
the pressing member rotates about the turning shaft to press the sheet toward the second tray
Data Source
AI summary
According to an embodiment, a sheet processing apparatus includes a first tray, a second tray, and a pressing member. The pressing member includes a turning shaft, the turning shaft being located on the downstream side of a transport direction of the sheet to the first tray, relative to an end of the upstream side of the sheet supported in the first tray, and when the sheet is moved from the first tray toward the second tray, rotates about the turning shaft. The pressing member rotates about the turning shaft, to press the sheet toward the second tray at a position on the upstream side relative to the turning shaft.