Method of operating a machine processing printing material sheets

US7000540B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Daniel Conzelmann · Dielheim, DE
• Karl-Heinz Helmstadter · Heidelberg, DE

Key dates

• Filing date: Apr 8, 2004
• Grant date: Feb 21, 2006
• Expiry date: Apr 8, 2024

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F21/106
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

In a method of operating a machine processing printing material sheets and having a sheet transport drum in various operating modes, drum circumferential shells are kept fixed on the sheet transport drum in an outer position in a first of the operating modes and in an inner position in a second of the operating modes. During a drum conversion to be carried out before the start of a third of the operating modes, the drum circumferential shells are removed from the sheet transport drum and, in this third operating mode, the sheet transport drum is rotated without the drum circumferential shells.