Original document feed system for a copier.

摘要

A copier document feed system includes a document stack tray (208) positioned over an exposure platen feed system (210). A document from the stack is fed to the platen feed system by a first turnaround system (214, 212). After exposure the document is fed to a deflector (218) to either the top (duplex path) or to the bottom (simplex path) of a second turnaround system (224, 222) or to a further tray (SADF path). When the document is fed to the bottom of the second turnaround system, this system drives it round back to the document stack tray. When the document is fed to the top of the second turnaround system, the feed direction of this sytem is reversed to feed the document, inverted, back to the exposure platen. The exposure platen feed system, and first and second turnaround systems are each driven by a separate servo system (254 260, and 248).