Printing press with in-line casting device for the replication and formation of a micro-optical structure

US11383507B2 · kind B2 · utility

Assignees

• KBA-NOTASYS SA · CH
• DE LA RUE INTERNATIONAL LIMITED · GB

Inventors

• Robert Stierman · Alphen aan den Rijn, NL
• Ana Dimitrijevic · Lausanne, CH
• Martin Palme · Kist, DE
• Thomas Kersten · Chernex, CH
• Aurélie Berthon · Villars-sous-Yens, CH
• John GODFREY · London, GB
• Robert Whiteman · Reading, GB
• Lawrence George Commander · Winchester, GB

Key dates

• Filing date: Feb 20, 2018
• Grant date: Jul 12, 2022
• Expiry date: Mar 17, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B42D25/324
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

There is described a printing press (100***; 100****) adapted to carry out printing on a sheet-like or web-like substrate (S), in particular for the production of security documents such as banknotes, comprising a printing unit (2*; 2**; 2***; 2****) designed to print a first side (I) and/or a second side (II) of the substrate (S). The printing press (100***; 100****) further comprises an in-line casting device (80; 80*; 80**; 80***) adapted to apply a layer of material acting as an optical medium on a portion of a first side (I, II) of the substrate (S) and to replicate and form a micro-optical structure (L) in the layer of material acting as optical medium. The printing unit (2*; 2**; 2***; 2****) is furthermore adapted to print at least one printed pattern on the first or second side (I, II) of the substrate (S) in register with the micro-optical structure (L), wherein the printing unit (2*; 2**; 2***; 2****) comprises at least a first printing group (93) being adapted to print at least one printed pattern on the second side (II) of the substrate (S) in register with the micro-optical structure (L) and wherein the in-line casting device (80; 80*; 80**; 80***) comprises at least …