Digital printing machine with a temperature control device for sheets

US10384473B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Peter Hachmann · Dossenheim, DE
• Rolf Mueller · Ingolstadt, DE
• Thomas Schmidt · Heidelberg, DE
• Michael Pritschow · Wiesloch, DE
• Peter Thoma · Mannheim, DE
• Kai Oskar Mueller · Birkenau, DE
• Michael Gieser · Oftersheim, DE
• Timo Erben · Heidelberg, DE

Key dates

• Filing date: May 2, 2018
• Grant date: Aug 20, 2019
• Expiry date: May 2, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J13/02
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A digital printing machine includes a first cylinder for transporting sheets, a second cylinder for transferring the sheets directly to the first cylinder, a third cylinder for transferring the sheets directly to the second cylinder, and at least one inkjet print head directed towards the first cylinder for printing on the sheets disposed thereon. At least one first sensor measures the temperature of the first cylinder, a second sensor measures the temperature of the sheets while being transported by the second cylinder or by the third cylinder, and at least one temperature control device controls the temperature of the sheets prior to their transfer to the first cylinder. A control element adapts the temperature of the sheets to the temperature of the first cylinder. The first sensor, the second sensor and the temperature control device are connected to the control element.