Vacuum Conveyance for Document Scanning
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Solution Overview
Problem
Traditional document scanning systems are inefficient and unable to handle documents of varying sizes and types, often resulting in distortions due to unreliable sheet movement and image capture techniques.
Innovation Solution
The implementation of a system with multiple sheet sensors and automated conveyance mechanisms that detect and calculate the dimensions, position, and orientation of sheets using non-vision approaches, allowing for precise handling and double-sided scanning of documents with variable characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional roller/plate techniques are used to move sheets, then the system can handle document scanning, but the velocity control is imprecise leading to image distortions
Solution Approach 1:
The patent replaces the traditional mechanical roller/plate conveyance system with a vacuum-based pneumatic system. The vacuum conveyance mechanism uses suction to hold and move sheets through the scanning apparatus, providing more reliable and precise velocity control compared to mechanical friction-based systems. This substitution eliminates the velocity control issues that caused image distortions while maintaining the ability to handle various sheet sizes.
Solution Approach 2:
The vacuum conveyance system is designed to universally handle sheets of widely varying sizes and types within a single scanning system. The system can accommodate different sheet dimensions without requiring separate mechanisms for each size, making the velocity control reliable across all sheet types while maintaining image quality.
2Productivity
If traditional double-sided scanning systems are used, then sheets can be scanned, but the process takes significant time
Solution Approach 1:
The patent implements continuous scanning where sheets are conveyed through the apparatus and both sides are scanned during a single continuous pass. The vacuum conveyance system maintains continuous sheet movement while scanning operations occur simultaneously, eliminating the need to stop and flip sheets between scans. This continuous operation significantly reduces scanning time while maintaining high productivity.
Solution Approach 2:
The system performs preliminary positioning and orientation of sheets using the vacuum conveyance mechanism before scanning begins. Sheets are properly aligned and held in place during the scanning process, allowing both sides to be scanned quickly without requiring repositioning or manual intervention between sides, thereby reducing overall scanning time.
3Adaptability or versatility
If traditional scanning systems handle sheets of known size, then the system is simple, but it cannot handle documents of widely varying sizes
Solution Approach 1:
The patent incorporates dynamic adjustment capabilities in the vacuum conveyance system to adapt to sheets of widely varying sizes. The system can adjust vacuum pressure, conveyance speed, and sensor positioning dynamically based on the detected sheet dimensions. This dynamic adaptability allows the system to handle different sheet sizes effectively without requiring multiple fixed configurations, balancing versatility with manageable complexity.
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
Enables efficient and accurate scanning of multiple sheets with varying sizes and types, reducing distortion and improving scanning speed and quality by using sensors to determine sheet characteristics and vacuum conveyance systems for controlled sheet movement.
Implementation Method 1
the automated conveyance mechanism comprises vacuum air flow configured to provide adhesive forces between a conveyor belt and the sheet
Data Source
AI summary
Systems and methods are provided for document handling. Non-vision detection systems may be capable of detecting the dimensions, orientation, and/or position of a single sheet, or multiple stacked sheets. A document scanning arrangement may be capable of double sided scanning for sheets with various characteristics. The systems and methods provided may accommodate high throughput and rapid digitization of various types of documents, at a high quality.