| 摘要 |
<p>A method and apparatus of processing sheet media such as document sheets to be duplex scanned or media sheets on which two sided printing is to take place involves the controlled rotation of a transport roller assembly (50) positioned in the media path in different directions such that moving media sheets engage a crenellated surface of the transport roller assembly which moves the leading edge of the moving sheet toward one or the other of two nips defined between the transport roller assembly and associated upper and lower pinch rollers (62, 64) or guides (27, 29). The crenellated surface of the transport roller assembly includes grooves (58) or spaces which extend in the direction of the leading edge of the sheet so that the leading edge of the sheet enters a moving groove to thus move the leading edge of the sheet in the desired direction. The direction of rotation of the transport roller assembly (50) can be reversed before the sheet leaves the nip to thus re-route the sheet back in a desired path for further sheet processing. <IMAGE></p> |
