Paper Path Structure With Flipping Device For Orientation Control
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Solution Overview
Problem
Existing paper path structures for printers and stackers lack versatility and space efficiency, as they cannot effectively invert printed sheets or handle orientation changes without additional space or complex mechanisms.
Innovation Solution
A paper path structure with an input section, output section, stack repository, and flipping device, featuring multiple controllable path sections and switch assemblies that allow sheets to be flipped and oriented in various ways, using a flipping wheel and curved paths to change sheet orientation without requiring extensive space or additional rotations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a paper path structure includes multiple path sections and a flipping device for sheet orientation control, then the versatility and functional range of the device is improved, but the device complexity and space requirements increase
Solution Approach 1:
The first path section is designed to perform multiple functions: it can transport sheets to the flipping device for orientation reversal, transport sheets to the third path section for direct output, and enable bidirectional sheet flow. This multi-functionality allows a single structural element to replace what would traditionally require multiple separate components, thereby increasing versatility while controlling complexity
Solution Approach 2:
The paper path structure employs controllable path sections with switch assemblies that can dynamically redirect sheets between different paths based on operational requirements. This dynamic configurability allows the system to adapt its structure during operation, enabling versatile sheet handling (flipping, direct transport, bidirectional flow) without requiring all paths to be permanently active, thus managing complexity while enhancing functional range
2Adaptability or versatility
If a paper path structure includes multiple controllable path sections for flexible sheet routing, then the versatility of sheet handling is improved, but the space occupied by the device increases
Solution Approach 1:
The paper path structure is configured with nested or overlapping path sections where the third path section can receive sheets from the first path section and transport them independently. This nesting arrangement allows multiple functional paths to share physical space, enabling flexible sheet routing (direct transport, flipping operations, bidirectional flow) without proportionally increasing the device's external footprint
3Manufacturing precision
If sheets are flipped using a flipping device with a flipping wheel, then the orientation control precision is improved, but the device complexity increases
Solution Approach 1:
The flipping device uses a flipping wheel with recesses that replicate the sheet's leading edge geometry. These recesses are precisely shaped to match and hold the sheet's leading edge, ensuring consistent and accurate flipping orientation. This copying approach achieves high orientation precision through geometric replication rather than complex active control mechanisms, thereby maintaining simplicity while improving precision
Data Source
AI summary
The invention provides a paper path structure that is able to perform the following four functions: pass a sheet of paper through the paper path structure with is original orientation maintained; pass a sheet of paper through the paper path structure with its original orientation reversed; stack a sheet of paper in a stack repository with its original orientation maintained; and stack a sheet of paper in the stack repository with its original orientation reversed. The invention also provides a method to operate said paper path structure as well as a stacker and a printer comprising said paper path structure.