Sheet-transporting drum and printing machine having the sheet-transporting drum

A sheet-transporting drum includes sheet-supporting areas each being formed of a first comb segment and a second comb segment having segment teeth. At least one of the comb segments is rotatable for adaptation to a sheet format. A mechanical leading-edge gripper is provided on the first comb segment...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Rothaug Juergen, Mueller Kai Oskar, Juenger Arno, Knabe Alexander, Schroeder Raimund, Dolz Wolfgang, Maul Albert, Schmidt Thomas, Conzelmann Daniel, Goll Sven
Format:	Patent
Sprache:	eng
Schlagworte:	CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES LINING MACHINES PACKING PERFORMING OPERATIONS PRINTING PRINTING MACHINES OR PRESSES STAMPS STORING TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	A sheet-transporting drum includes sheet-supporting areas each being formed of a first comb segment and a second comb segment having segment teeth. At least one of the comb segments is rotatable for adaptation to a sheet format. A mechanical leading-edge gripper is provided on the first comb segment and a pneumatic trailing-edge gripper is provided on the second comb segment. A mechanical trailing-edge gripper is additionally disposed on the second comb segment and is deactivatable in particular by format adjustments. This advantageously allows either the trailing edge of a sheet to be securely held down mechanically or a full-bleed print to be applied to the sheet when the trailing edge of the sheet is held down pneumatically. A sheet-fed printing machine is also provided.