An apparatus for processing a substrate on two sides. A substrate has a first edge as a leading edge in a process direction and a first side in a face-up orientation. In one embodiment, the apparatus comprises an input pathway for receiving the substrate from a substrate processing station, a station...http://www.google.de/patents/US6607320?utm_source=gb-gplus-sharePatent US6607320 - Mobius combination of reversion and return path in a paper transport system
