Method for manufacturing printed products

US10252548B2 · kind B2 · utility

Assignee

• Heidelberger Druckmaschinen AG · DE

Inventors

• Thomas Paul · Herne, DE
• Peter Hachmann · Dossenheim, DE

Key dates

• Filing date: May 25, 2017
• Grant date: Apr 9, 2019
• Expiry date: May 25, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M7/0018
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A method for manufacturing printed products contains the steps of applying at least one colored and water-containing ink to image regions on a printing material in a drop-on-demand process. An essentially colorless and water-containing liquid is applied a) to non-image regions and/or b) to image regions that have only little ink in the drop-on-demand process. The printing material is dried. The printing material has a coating that contains at least one acid. After the application of ink and the application of a liquid, a water-containing further liquid, for instance a varnish, is applied both to image regions and to non-image regions of the printing material, and that the liquid and/or the further liquid contains at least one substance that at least partly neutralizes the acid. The undesired formation of waves and glossiness fluctuations between varnished image regions and varnished non-image regions may thus advantageously be avoided.