Sheet positioning apparatus

Position registration of sheets (S) in a feed path (F) is achieved without edge guides or gates. Laterally separated drive rolls (14, 16) are speed controlled, by stepper motors (18, 20), to correct for skew mispositioning. Lateral registration is achieved by translation of the drive rolls transvers...

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Bibliographische Detailangaben
Hauptverfasser:	MALACHOWSKI, MICHAEL ANTHONY, KAMPRATH, DAVID R
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CINEMATOGRAPHY CONVEYING ELECTROGRAPHY ELECTROPHOTOGRAPHY HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES HOLOGRAPHY MAGNETOGRAPHY PACKING PERFORMING OPERATIONS PHOTOGRAPHY PHYSICS STORING TRANSPORTING
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Beschreibung
Zusammenfassung:	Position registration of sheets (S) in a feed path (F) is achieved without edge guides or gates. Laterally separated drive rolls (14, 16) are speed controlled, by stepper motors (18, 20), to correct for skew mispositioning. Lateral registration is achieved by translation of the drive rolls transversely to the direction of sheet movement, using a stepper motor (40) and lead screw (42) arrangement. Longitudinal registration is controlled by varying the speeds of the drive rollers equally. The system reduces the required paper path length to achieve correct registration, thereby allowing higher speed operation.