Multi-mode document handling system

摘要

An automatic document handling system particularly suitable for raster input scanners which is capable of operating in either a simplex or duplex document handling mode. The document handling system has document input and output trays in operative relation with a reversible document transport roll which in turn cooperates with a pair of displaceable pinch bars to provide both a document feeding nip and means for selectively routing the document for either duplex and simplex processing. A document guide having an integral control gate effects inverting and recirculation of the document for duplex mode or in simplex mode return of the document to the document supply tray.