Parallel Belt Document Scanner with Transparent Sections
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Solution Overview
Problem
Existing document scanning devices struggle with scanning and transporting small, irregularly shaped, or fragile documents, which often require manual placement on a flatbed scanner, leading to inefficiencies and errors.
Innovation Solution
A device with two parallel endless belts that transport documents between facing belt surfaces, allowing simultaneous scanning of both sides without relative movement or friction, using transparent sections for scanning and electrostatic charging to secure documents, and featuring cleaning and drying mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If rollers are used to transport documents, then documents can be moved automatically, but small, irregularly shaped, or fragile documents cannot be transported reliably
Solution Approach 1:
The patent replaces the traditional roller-based mechanical transport system with a belt-based system. The endless belts provide a different mechanical interface that can accommodate small, irregularly shaped, and fragile documents without the gripping and slipping problems inherent in roller systems. The belts transport documents through gentle contact and enclosure rather than friction-based gripping.
2Reliability
If manual placement on flatbed scanner is used, then fragile documents can be scanned, but scanning efficiency decreases and errors increase
Solution Approach 1:
The patent merges the document transport function and scanning function into a single integrated process. Documents are transported on the belts while simultaneously being scanned by the scanning unit, eliminating the need for separate manual placement steps. This combination maintains scanning accuracy while dramatically improving throughput by removing pauses between placement and scanning.
Solution Approach 2:
The patent enables continuous scanning operation where the scanning unit continuously scans documents as they move on the belts. There are no interruptions or pauses for manual document placement, creating an uninterrupted scanning workflow that maximizes productivity while maintaining quality through consistent scanning conditions.
3Productivity
If transparent belts are used for scanning, then optical scanning can occur during transport, but belt design complexity increases
Solution Approach 1:
The patent applies transparency locally to specific sections of the belts rather than making the entire belt structure transparent. The endless belts have transparent sections in the scan acquisition area to allow optical scanning, while other sections can have different properties. This localized application of transparency enables scanning during transport without requiring the entire belt system to be complex transparent structures.
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, error-free scanning of irregular documents in a single pass, reducing manual handling and minimizing document damage, while ensuring high-quality image capture.
Implementation Method 1
a device for electrostatically charging one of the endless tapes
Implementation Method 2
at least one device for electrostatically discharging the endless tapes
Data Source
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AI summary
Device for scanning documents, comprising a scanning unit and a document transport device, wherein the scanning unit is configured to optically scan the documents in a scan acquisition area, wherein the document transport device is configured to receive the documents and transport them into the scan acquisition area, wherein the document transport device comprises two endless belts which run parallel to each other at least in the scan acquisition area and are configured to guide the documents between their mutually facing belt surfaces in the scan acquisition area, and wherein at least one of the endless belts has a section transparent to the scanning unit.