Printing machine

US5927195A · kind A · utility

Assignee

• MAN Roland Druckmaschinen AG · DE

Inventors

• Albrecht Volz · Rödermark, DE
• Joachim Blumor · Großkrotzenburg, DE
• Holger Wiese · Affoltern am Albis, CH
• Helmut Schild · Rheinböllen, DE
• Thomas Herrmann · Cologne, DE
• Klaus-Peter Reichardt · Bad Vilbel, DE

Key dates

• Filing date: Dec 3, 1997
• Grant date: Jul 27, 1999
• Expiry date: Dec 3, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41P2213/734
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A printing machine is disclosed, in particular a sheet-fed offset printing machine, in which a plurality of cylinders are coupled to one another via a continuous drive train, and at least two cylinders include a controllable drive. The controllable drive stresses the drive train in order affect the tooth-flank contact of the gear train, which affects the angular position of the printing cylinders. By controlling the angular positions of the printing cylinders, precise registration is maintained during dynamic changes in the load on the gear train during the printing process. More specifically, blanket cylinders in the printing machine are each coupled to a position-controllable drive, which is controlled by applying a preferred position value in such a way that the gear train placed between two drives is stressed by a predefined angular amount.