Method to produce a printing form for rotogravure, printing form for rotogravure and their use
AssigneeHell Gravure Systems GmbH
InventorsSiegfried Beisswenger, Maximilian Rid
Life of this patent
Estimating the term…
Abstract
In a method to produce a printing form for rotogravure, in particular for heliorotogravure, a surface of the formis provided with a wear-resistant layer and the surface is provided with cups. Furthermore, a printing form is provided whereby the surface of the printing form comprises a wear-resistant layer in which the cups, with regard to their depth, are at least partially provided therein. The printing form may be used in a printing device for heliorotogravure.
Claims47
A method for producing a printing form for rotogravure, comprising the steps of:
- providing a surface of the rotogravure printing form with a wear-resistant layer having a Vickers hardness greater than 110 kp/mm2;
- and
- thereafter providing rotogravure cups, differing volumes of which determine differing corresponding tone values in the wear-resistant layer.
A printing form for rotogravure wherein a surface of the rotogravure printing form comprises a wear-resistant layer, the wear-resistant layer having a Vickers hardness greater than 110 kp/mm2 and wherein the wear-resistant layer is designed for having rotogravure cups at least one of etched and engraved therein, differing volumes of the cups determining differing corresponding tone values.
A rotogravure printing form, comprising:
- a core;
- a wear-resistant layer overlying the core;
- the wear-resistant layer having a Vickers hardness greater than 110 kp/mm2;
- and
- the wear resistant layer being designed for at least one of engraving and etching of rotogravure cups therein where differing volumes of the cups determine differing corresponding tone values.
A printing form for rotogravure, comprising:
- a core;
- a wear-resistant layer overlying the core;
- the wear-resistant layer having a Vickers hardness greater than 110 kg/mm2;
- cups engraved in the wear-resistant layer;
- a base layer provided between the wear-resistant layer and the core;
- and
- wherein the cups extend through the wear-resistant layer and partially into said base layer.
A rotogravure printing form, comprising:
- a core;
- a wear-resistant layer overlying the core;
- the wear-resistant layer having a Vickers hardness greater than 110 kp/mm2;
- and
- rotogravure cups engraved in the wear-resistant layer, differing volumes of the cups determining differing corresponding tone values.
Dependencies are inferred from the claim text.