SYSTEM AND METHOD FOR MONITORING AND CONTROLLING DOCUMENT VELOCITY IN A SCANNING SYSTEM

摘要

A method of scanning documents and moving such documents along a path such that during scanning a method of improving the documents velocity and the documents image quality is disclosed. The method includes providing a plurality of documents in an input tray and transporting each document along the path from the input tray at a transport velocity past the scanner to obtain scanned image data. By monitoring and controlling the velocity profile of the transport system, the scanning system may provide higher image quality, reduce slippage, misfeeds and jams, and provide alerts to an operator in the even slippage, misfeeds, or jams do occur.

主权项

1. A system for providing an improved document velocity along a document transport path, the system comprising:
(a) a plurality of rollers for conveying the document along the document transport path, including at least one urging roller for urging the document into the document transport path and a separation device for separating individual sheets of documents; (b) a motor for driving the at least one urging roller with a motor velocity; (c) an urging roller sensor configured to:
(i) detect a velocity of the urging roller;(ii) generate signals representative of the urging roller velocity; and(iii) generate a signal to indicate that the roller has stopped rotating; and (d) a processor configured to detect the trailing edge of the document based on the signal indicating that the roller has stopped rotating, and to adjust the speed of at least one of the plurality of rollers based on the detection of the trailing edge.