SECURITY ELEMENT, AND METHOD FOR PRODUCING A SECURITY ELEMENT

• Main Authors: RENNER PATRICK, DEPTA GEORG, JAHN STEFFI, GREGAREK ANDRE, FUHSE CHRISTIAN, SCHINABECK JOSEF, RACK VERONIKA, BAHR ANNETT
• Format: Patent
• Language: Chinese; English
• Published: 02.04.2019
• Subjects: BOOK COVERS; BOOKBINDING; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR; FILES; LOOSE LEAVES; MOVABLE-STRIP WRITING OR READING APPARATUS; PERFORMING OPERATIONS; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR; SPECIAL PRINTED MATTER; TRANSPORTING

The invention relates to a method for producing a security element (12) comprising a flip image, the method comprising the following steps: providing a substrate (14) having a region with a dye that is sensitive to laser radiation. forming a plurality of microstructures (26) on the substrate (14), each microstructure (26) being formed such that it focuses radiation incident on a front face of thesubstrate (14) onto said region; and irradiating the microstructures (26) with a set (28) of parallel laser beams at a first angle to the substrate (14), the individual laser beams of the set (28) being arranged such that a structure of a first flip image (18) is created, which image can be discernible from the front face at a viewing angle associated with the first angle (et). The dye that is sensitive to laser radiation changes its color by irradiation with a specific laser radiation, and the first flip image (18) displays a color effect caused by the color change. 本发明涉及种用于制造具有倾斜图像的防伪元件(12)的方法，所述方法包括以下步骤：提供基底(14)，所述