Soft nip folder

An improved folder includes a "soft stop" reversible roll nip. Folding is accomplished by feeding a copy sheet into a stepper/servo controlled pinch roll that is under software control. The copy sheet is measured and the reversible roll nip is cycled from full forward to full reverse veloc...

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Bibliographische Detailangaben
Hauptverfasser:	GRAY, JR., GARY A
Format:	Patent
Sprache:	eng
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:	An improved folder includes a "soft stop" reversible roll nip. Folding is accomplished by feeding a copy sheet into a stepper/servo controlled pinch roll that is under software control. The copy sheet is measured and the reversible roll nip is cycled from full forward to full reverse velocity with controlled acceleration. The reversing of the sheet causes a buckle to be created and the sheet creased by a secondary set of rolls.