Document Scanner Paper Path Dynamics for Compact Sorting
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Solution Overview
Problem
Existing document scanners require large distances between image capture devices and paper path switching mechanisms to allow sufficient processing time for image analysis, leading to increased size and cost, as well as diminished ergonomics due to the need for long paper paths.
Innovation Solution
A document scanning system that allows for image analysis and sorting decisions to be made while the document is stopped or slowed along the paper path, using 'park and go' or 'stop, reverse, and go' procedures, enabling compact and ergonomic design by eliminating the need for long paper paths, and incorporating OCR recognition for document classification and printing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If large distances are provided between image capture devices and paper path switching mechanisms to allow sufficient processing time, then image analysis capability is improved, but scanner size and cost increase
Solution Approach 1:
The system dynamically adjusts the paper path by introducing switchable alternate paths that can extend or shorten the document travel distance based on processing requirements. Paper path switches enable the system to adapt the physical configuration in real-time, allowing sufficient processing time without permanently increasing scanner size.
Solution Approach 2:
The paper path is segmented into multiple configurable sections with switchable alternate paths. This segmentation allows the system to create variable-length processing zones, enabling time-critical image analysis while maintaining a compact overall structure through modular path configuration.
2Loss of time
If large distances are provided between image capture devices and paper path switching mechanisms to allow sufficient processing time, then image analysis capability is improved, but scanner cost increases
Solution Approach 1:
The paper path switching mechanism serves multiple functions: it extends processing time, enables compact design, and provides flexible document routing. This multi-functionality reduces the need for separate dedicated components, thereby controlling system cost while achieving sufficient processing time.
Solution Approach 2:
The system changes the paper path configuration parameter dynamically to optimize processing time. By adjusting the physical path length through switchable alternate paths, the system achieves adequate processing time without permanently increasing complexity or cost.
3Loss of time
If long paper paths are used to provide processing time, then image analysis capability is improved, but ergonomics are diminished
Solution Approach 1:
The system dynamically configures the paper path length based on processing needs rather than using a fixed long path. This dynamic adjustment allows the scanner to maintain a compact, ergonomic form factor while still providing sufficient processing time when required through switchable alternate paths.
Data Source
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AI summary
An image scanner system and method with document sorting capability that includes the ability to sort based on image content is described. A processor instructs drive motors and rollers of the transport system moving the document along a transport path within the scanner to stop movement, such that document is stopped at a position after it is imaged to provide time for the processor to analyze the image content and make a sorting decision. The transport system is then restarted and the document is delivered to a paper path switching mechanism to provide the physical sort. Based on the processing, the switching mechanism is positioned such that the document will follow a transport path into a desired output tray. The system may reverse the transport system to back up the document before being restarted in order to allow for paper path switching of longer documents.