Device for printing ink onto printing material

US10675885B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Andreas Mueller · Zeitlarn, DE
• DAVID EHRBAR · Walldorf, DE

Key dates

• Filing date: Aug 29, 2018
• Grant date: Jun 9, 2020
• Expiry date: Aug 29, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41J2202/12
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A printing device includes an ink jet print head having individually controllable nozzles for jetting ink drops. An ink line connected to a chamber has a feed and/or return line for the print head. The print head, ink line and chamber move jointly relative to printing material. The ink line is part of a circulation ink supply system for the print head. A mass element associated with the chamber has a position and/or shape relative to the chamber changing as a function of the joint movement so that the chamber volume is a function of the position and/or shape of the mass element to compensate for pressure fluctuations and/or movements of the ink and avoid problems in the ink supply system for a print head in industrial, high-performance ink jet printing and in cooperation with circulation ink supply systems conveying large volumes of ink.