Web-fed inkjet printing press and method for printing a printing material

US9776423B2 · kind B2 · utility

Assignee

• KOENIG & BAUER AG · DE

Inventors

• Oliver Christian Baar · Holzgerlingen, DE
• Klaus Eppich · Unterpleichfeld, DE
• Sven Michael · Lengerich, DE

Key dates

• Filing date: Sep 23, 2014
• Grant date: Oct 3, 2017
• Expiry date: Sep 23, 2034

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M5/0023
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A web-fed inkjet printing press has at least one printing unit and uses a printing material which is configured as a printing material web which is guided or which can be guided through the printing unit and which can be printed by at least one inkjet print head in the printing unit in a printing process with a printing color of a defined hue which is configured as ink. The inkjet print head in the printing unit is directed directly onto the printing material. A printing material web is made from a mechanical paper with a weight per unit area between 3.5 and 80 g/m2 and/or with a surface to be printed with a roughness according Bendtsen of at least 30 ml/min and or a thickness of from 50 to 120 μm which is guided through the printing unit. The printing material web, in order to be printed, is in interaction indirectly or directly with the at least one inkjet print head of the printing unit. The inkjet print had has an ink reservoir or has a line connection to an ink reservoir with a water-based printing color which is configured as ink and comprises both color pigments and a polymer or a copolymer as constituent parts.