Document scanner with automatic constant velocity transport re-s

Details Document scanner with automatic constant velocity transport re-s Document scanner with automatic constant velocity transport re-s

1999-12-01

2000-09-05

Moses, Richard

Electrophotography

Document handling

Original

399374, G03G 2100

Patent

active

061155780

ABSTRACT:
A document scanner, including a document input tray for holding a compilation of documents in a predetermined sequence; a document output tray for receiving documents; an imaging station for scanning each one of said compilation of documents at predefined scanning rate; an imaging transport system for moving the documents received from said document input tray through said imaging station at a first velocity; an inverter, spaced a predetermined distance from said imaging transport system for moving selected documents of said compilation of documents back to said imaging transport system, said inverter having one mode of operation for moving selected documents to said imaging transport system so that a second side of said selected documents is scanned by said imaging station, said inverter having second mode of operation for moving selected documents to said imaging transport system so that said first side of said selected documents are rescanned by said imaging station. There is also provided a processor, in communication with said imaging station and said transport system, for processing image data at a predetermined data rate, said processor includes means for sensing a data rate fault, and means for generating an error signal in response to said data fault to enable said second mode of said inverter, wherein said second mode of operation said imaging transport system moves at a second velocity which is less than said first velocity.

REFERENCES:
patent: 5392109 (1995-02-01), Acquaviva

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