Original Publication Date: 1980-Aug-31
Included in the Prior Art Database: 2004-Apr-02
Xerox Disclosure Journal
A tri-roll sheet reverser-skew correcting mechanism is provided having a pair of centrally located drive rolls 2 provided with overriding clutches. The drive rolls 2 cooperate with ball-type rollers 4 to provide the forward and reverse nips. A spring loaded sheet stop 6 is provided with widely spaced, rotatable stop rolls 8 to arrest sheet movement and urge the sheet into the reverse nip. When a skewed sheet enters the reverser, the leading edge contacts one of the sheet stop rolls 8 and a rotational moment is induced by the feed roll 2 on the leading portion of the skewed sheet causing a rotation of the sheet and overdriving of the opposite feed roll. At the same time the lead edge of the sheet is caused to side shift against the stop roll 8. This rotation continues until both stop rolls are contacted by the lead edge after which non-skewed reversal is achieved.