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    RETROREFLEKTIERENDE RELIEFSTRUKTUR IN PRÄGELACK
    3.
    发明申请
    RETROREFLEKTIERENDE RELIEFSTRUKTUR IN PRÄGELACK 审中-公开

    公开(公告)号：WO2021249609A1

    公开(公告)日：2021-12-16

    申请号：PCT/EP2020/025271

    申请日：2020-06-09

    Applicant: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH

    Inventor： SCHERER, Kai Herrmann ,  RAHM, Michael ,  SCHERER, Maik Rudolf Johann

    IPC: B42D25/324 ,  B42D25/425 ,  B41N1/06 ,  B44B5/02 ,  G02B5/124 ,  B44B5/026

    Abstract: Die Erfindung betrifft ein Prägewerkzeug zur Herstellung eines flächigen Retroreflektors, der eine in einem aushärtbaren Prägelack, insbesondere einem UV-Lack, ausgebildete, retroreflektierende Cornercube-Relief Struktur aufweist und eine von einer Einfallsseite einfallende elektromagnetische Strahlung retroreflektiert. Das Prägewerkzeug weist hierbei auf einer Seite eine Anzahl n von aneinander angrenzenden Vertiefungen und/ oder Erhöhungen auf, wobei jede der n Vertiefungen und/ oder Erhöhungen aus drei mit einem bestimmten Winkel (α') zueinander angeordneten Planflächen gebildet wird. Die Erfindung betrifft weiterhin ein Verfahren zur Herstellung eines derartigen Prägewerkzeugs. Erfindungsgemäß ist der bestimmte Winkel (α') um einen bestimmten Wert X kleiner als 90°, also α' = 90° - X, so dass die durch das Prägwerkzeug in den Prägelack abgeformte Anzahl n von aneinander angrenzenden Erhöhungen und/ oder Vertiefungen nach einem Aushärten des aushärtbaren Prägelacks jeweils aus drei mit einem Winkel von 90° zueinander angeordneten Planflächen bestehen. Erhöhungen des Prägewerkzeugs entsprechen hierbei Vertiefungen im Prägelack und Vertiefungen im Prägewerkzeug Erhöhungen des Prägelacks.

    METHOD OF APPLYING A PATTERN, AND SECURITY DEVICE FOR AN ARTICLE
    4.
    发明申请
    METHOD OF APPLYING A PATTERN, AND SECURITY DEVICE FOR AN ARTICLE 审中-公开

    公开(公告)号：WO2021245373A1

    公开(公告)日：2021-12-09

    申请号：PCT/GB2021/051278

    申请日：2021-05-26

    Applicant: BODLE TECHNOLOGIES LTD

    Inventor： TRIGGS-RAMM, Graham ,  HOSSEINI, Peiman

    IPC: B42D25/36 ,  B42D25/324 ,  B42D25/425 ,  B42D25/455 ,  B42D25/46 ,  B42D25/346

    Abstract: Methods of applying a pattern and security devices are disclosed. In one arrangement, a receiving member (10) having a layered structure (12) is provided. The layered structure (12) comprises a layer of phase change material (PCM, 2). The phase change material (PCM, 2)is thermally switchable between a plurality of stable states having different refractive indices relative to each other. An embossing member (5) is stamped into the receiving member (10). The embossing member (5) heats a selected portion of the layer of phase change material (PCM, 2) via contact with the receiving member (10) during the stamping. The heating thermally switches phase change material (PCM, 2) in the selected portion and thereby applies a pattern of different refractive indices to the layer of phase change material (PCM, 2).

    VERFAHREN ZUM HERSTELLEN EINES MEHRSCHICHTKÖRPERS SOWIE EINEN MEHRSCHICHTKÖRPER
    5.
    发明申请
    VERFAHREN ZUM HERSTELLEN EINES MEHRSCHICHTKÖRPERS SOWIE EINEN MEHRSCHICHTKÖRPER 审中-公开

    公开(公告)号：WO2021244842A1

    公开(公告)日：2021-12-09

    申请号：PCT/EP2021/062986

    申请日：2021-05-17

    Applicant: LEONHARD KURZ STIFTUNG & CO. KG

    Inventor： OLSZOWKA, Violetta ,  HASSE, Benjamin

    IPC: B42D25/342 ,  B42D25/425

    Abstract: Die Erfindung betrifft ein Verfahren zum Herstellen eines Mehrschichtkörpers (40) sowie einen Mehrschichtkörper. Das Verfahren zum Herstellen eines Mehrschichtkörpers umfasst hierbei folgende Schritte: - Bereitstellen zumindest einer Basisfolie (20); - Bereitstellen zumindest einer Transferfolie; - Zumindest partielles Aufbringen zumindest einer Transferlage (10) de Transferfolie auf und/oder unter die Basisfolie (20). Der Mehrschichtkörper (40) weist zumindest eine Basisfolie (20) und zumindest eine auf und/oder unter der Basisfolie (20) aufgebrachte Transferlage (10) einer Transferfolie auf.

    A PRINTING SYSTEM OF SECURITY MATERIALS AND ANTI-FORGERY DOCUMENTS WITH RAISED PRINTING AND PROCESS THEREOF
    7.
    发明申请
    A PRINTING SYSTEM OF SECURITY MATERIALS AND ANTI-FORGERY DOCUMENTS WITH RAISED PRINTING AND PROCESS THEREOF 审中-公开

    公开(公告)号：WO2021014296A1

    公开(公告)日：2021-01-28

    申请号：PCT/IB2020/056708

    申请日：2020-07-16

    Applicant: MAMIZADEH, Hassan

    Inventor： MAMIZADEH, Hassan

    IPC: B42D25/425 ,  B41M3/14 ,  B41J2/01 ,  B41F15/00 ,  B41J11/00 ,  B65H5/00 ,  B41F23/04 ,  B42D25/328

    Abstract: In anti-forgery securities printing, various security features are used to increase the security. The most important security element and feature of security documents is the raised print. There are limitations in the current technologies in terms of durability, quality, and number of colors used in Intaglio raised print. Furthermore, the equipment relevant to the security industry is huge and expensive. In the present invention, a system has been introduced to create various security features in securities wherein all of the processes including the raised printing are introduced in an all-in-one device. The present innovation not only removes the mentioned restrictions by removing the conventional printing plates, but also makes it possible to print documents in low volumes or circulations and significantly reduces the printing costs.

    SECURITY DEVICES AND METHODS OF MANUFACTURE THEREOF
    8.
    发明申请
    SECURITY DEVICES AND METHODS OF MANUFACTURE THEREOF 审中-公开

    公开(公告)号：WO2021009497A1

    公开(公告)日：2021-01-21

    申请号：PCT/GB2020/051675

    申请日：2020-07-10

    Applicant: DE LA RUE INTERNATIONAL LIMITED

    Inventor： HOLMES, Brian

    IPC: B42D25/324 ,  B42D25/328 ,  B42D25/342 ,  B42D25/373 ,  B42D25/425

    Abstract: A security device is disclosed. The security device comprises an array of reflective sampling elements, which are eg convex micromirrors (101). A non-dispersive colour-generating relief structure (102) is formed in a surface of the reflective sampling elements. The non- dispersive colour-generating relief structure defines an array of image elements across the array of reflective sampling elements. The array of image elements defined by the non-dispersive colour-generating relief structure and the array of reflective sampling elements cooperate to exhibit an optically variable effect. The non- dispersive colour-generating relief structure can be an array of plasmonic nanostructures in the form of nanopillars each having a shaft (114) which can be a dielectric layer (111) being coated with a metal layer (112), or can be a zero-order diffraction grating (124), or can be an array of nanoholes (115). Each micromirror can be a Fresnel micromirror. The device can also comprise an array of anti- reflective nanostructures (35), eg moth-eye relief structures.

    IMAGE COULEUR FORMEE A PARTIR D'UN HOLOGRAMME
    9.
    发明申请
    IMAGE COULEUR FORMEE A PARTIR D'UN HOLOGRAMME 审中-公开

    公开(公告)号：WO2020174153A1

    公开(公告)日：2020-09-03

    申请号：PCT/FR2020/050262

    申请日：2020-02-13

    Applicant: IDEMIA FRANCE

    Inventor： BERTHE, Benoît ,  DURIEZ, Christophe

    IPC: B42D25/324 ,  B42D25/328 ,  B42D25/351 ,  B42D25/405 ,  B42D25/41 ,  B42D25/425 ,  B42D25/435 ,  B41M3/14 ,  B41M5/24 ,  B41M5/26

    Abstract: L'invention concerne une image couleur (IG) comprenant : une première couche (10) comportant une structure holographique formant un arrangement (29) de pixels (30) comportant chacun des sous-pixels (32) de couleurs distinctes; et des moyens de modulation de couleur configurés pour sélectionner la couleur des pixels (30) en modifiant la contribution colorimétrique des sous-pixels (32) les uns par rapport aux autres dans les pixels (30) de sorte à révéler une image couleur personnalisée. Les moyens de modulation de couleur peuvent comprendre : des régions de la structure holographique, dites régions détruites, qui sont détruites localement par laser; des moyens de masquage positionnés en regard de l'arrangement de pixels pour masquer localement tout ou partie de sous-pixels; ou encore des moyens d'amplification positionnés en regard de l'arrangement de pixels pour amplifier localement la luminosité de tout ou partie de sous-pixels.

    OPTICAL DEVICE AND METHOD OF MANUFACTURE THEREOF
    10.
    发明申请
    OPTICAL DEVICE AND METHOD OF MANUFACTURE THEREOF 审中-公开

    公开(公告)号：WO2019186189A1

    公开(公告)日：2019-10-03

    申请号：PCT/GB2019/050915

    申请日：2019-03-29

    Applicant: DE LA RUE INTERNATIONAL LIMITED

    Inventor： LISTER, Adam ,  GODFREY, John

    IPC: B42D25/324 ,  B42D25/351 ,  B42D25/364 ,  B42D25/373 ,  B42D25/29 ,  B42D25/425 ,  B42D25/45

    Abstract: An optical device is disclosed, comprising; a colour shifting layer that exhibits different colours dependent on the angle of incidence of incident light, and; an array of substantially transparent microstructures covering at least a part of the colour shifting layer and configured to modify the angle of light incident to, and reflected from, the colour shifting layer, said array of microstructures arranged in accordance with a plurality of pixels of a colour image to be exhibited by the optical device, each pixel exhibiting a uniform colour, wherein; the array of microstructures comprises at least first and second sub-arrays of microstructures corresponding to respective first and second colour channels, each sub-array covering an area within a pixel corresponding to the proportion of the respective colour channel within the pixel such that the pixel exhibits the uniform colour, and further wherein; the microstructures of the first sub-array are configured to modify the angle of light incident to, and reflected from, the colour shifting layer in a first manner such that, at a substantially normal viewing angle of the optical device, the first sub array exhibits a base colour and at a first viewing angle of the optical device, the first sub-array exhibits a first colour, wherein said first viewing angle corresponds to viewing the optical device along a direction that is off the normal of the optical device and; the microstructures of the second sub- array are configured to modify the angle of light incident to, and reflected from, the colour shifting layer in a second manner different to the first such that, at a substantially normal viewing angle of the optical device, the second sub-array exhibits said base colour and at said first viewing angle, the second sub-array exhibits a second colour different from the first colour; such that at a substantially normal viewing angle, the optical device exhibits the base colour, and at said first viewing angle, the optical device exhibits the colour image. Methods of manufacturing such optical devices are also disclosed.

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