Method of operating a printing machine and printing machine for carrying out the method

US8156865B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Ulrich Luckhardt
• Oliver Nowarra · Leimen, DE
• Willi Stutz · Neustadt, DE

Key dates

• Filing date: May 27, 2009
• Grant date: Apr 17, 2012
• Expiry date: Jul 1, 2030

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41F31/004
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method for operating a printing machine in a print operating mode and another operating mode, for example a maintenance mode. In the print operating mode, bringing a vibrating roller periodically into contact with a first roller of an inking unit, driving the first roller rotationally by a first motor, driving a second roller of the inking unit rotationally by a second motor, transmitting no torque from the first motor to the second roller through a clutch therebetween, and activating the first motor by a control device causing the first roller to rotate at a rotational speed in a constant ratio to a rotational speed of the second roller. In the other operating mode, driving the first and second rollers rotationally by the first motor and transmitting torque from the first motor to the second roller through the clutch. A printing machine for carrying out the method Is also provided.