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    SECURE DOCUMENT AND METHOD FOR MANUFACTURING A SECURE DOCUMENT
    1.
    发明公开
    SECURE DOCUMENT AND METHOD FOR MANUFACTURING A SECURE DOCUMENT 审中-公开

    公开(公告)号：US20240336082A1

    公开(公告)日：2024-10-10

    申请号：US18624218

    申请日：2024-04-02

    申请人： IDEMIA FRANCE

    发明人： Marie MAZZOLINI ,  Coralie VANDROUX ,  Benoît BERTHE

    IPC分类号： B42D25/346 ,  B42D25/23 ,  B42D25/373 ,  B42D25/435 ,  B42D25/45 ,  G02B3/00

    CPC分类号： B42D25/346 ,  B42D25/373 ,  B42D25/435 ,  B42D25/45 ,  G02B3/005 ,  G02B3/0056 ,  B42D25/23

    摘要： The present invention relates to a secure document and to a method for manufacturing a secure document. The secure document comprises:



    a metal layer or metal oxide layer,
    a lenticular array comprising converging lenses positioned facing the metal layer or metal oxide layer,
    at least one transparent layer on which the metal layer or metal oxide layer is arranged such that said metal layer or metal oxide layer is interposed between the lenticular array and the transparent layer;
    wherein the metal layer or metal oxide layer comprises perforations formed by focusing a plurality of laser radiations through the lenticular array onto the metal layer or metal oxide layer, the plurality of laser radiations being directed at a plurality n of angles of incidence in order to form said perforations so as to reveal n personalized images when the secure document is observed at the n angles of incidence,
    said perforations being produced in contiguous or overlapping perforation areas so as to form visual continuity between the n personalized images when said document is tilted.

    Laser marked optically variable device
    4.
    发明授权
    Laser marked optically variable device 有权

    公开(公告)号：US11945256B2

    公开(公告)日：2024-04-02

    申请号：US17482522

    申请日：2021-09-23

    申请人： Canadian Bank Note Company, Limited

    发明人： Thivaharan Thurailingam ,  Silviu Crisan

    IPC分类号： G02B5/18 ,  B42D25/29 ,  B42D25/342 ,  B42D25/351 ,  B42D25/435

    CPC分类号： B42D25/435 ,  B42D25/29 ,  B42D25/342 ,  B42D25/351 ,  G02B5/1852

    摘要： A security device for security documents provides an angle-dependent Moiré effect. A security device for a security document and method for making the security device are provided. At least two interlaced laser engraved images form an angle dependent parallax effect. First and second images are laser engraved at a substrate of the security document. To render the security device more difficult to copy, a colour changing effect or a nonreciprocal transmission effect may be achieved by adding a coloured (absorptive or emissive) layer between or within non-laser engravable layers situated between the laser engravable layers, and/or by adding a patterned phase diffraction grating situated between the laser engravable layers.

    Laser marking warpage mitigation
    8.
    发明授权
    Laser marking warpage mitigation 有权

    公开(公告)号：US11731445B2

    公开(公告)日：2023-08-22

    申请号：US16784893

    申请日：2020-02-07

    申请人： Entrust Datacard Corporation

    发明人： Denny Warwick

    IPC分类号： B41M5/26 ,  B42D25/435 ,  B42D25/23 ,  B42D25/41 ,  B42D25/485

    CPC分类号： B41M5/267 ,  B42D25/435

    摘要： Techniques are described herein that mitigate warpage during laser marking on a plastic security document. A method of laser marking a feature onto a plastic card includes electronically dividing an image of the feature into a plurality of sections. The method includes laser marking a first one of the sections on the document and laser marking a second one of the sections on the document. The first section is not contiguous with the second section.

    METHOD FOR PRODUCING A MULTILAYER BODY, AND A MULTILAYER BODY
    9.
    发明公开
    METHOD FOR PRODUCING A MULTILAYER BODY, AND A MULTILAYER BODY 审中-公开

    公开(公告)号：US20230166556A1

    公开(公告)日：2023-06-01

    申请号：US17923019

    申请日：2021-04-29

    申请人： LEONHARD KURZ Stiftung & Co. KG ,  OVD Kinegram AG

    发明人： Violetta Olszowka ,  Benjamin Hasse ,  Harald Walter

    IPC分类号： B42D25/435 ,  B42D25/342 ,  B42D25/425

    CPC分类号： B42D25/435 ,  B42D25/342 ,  B42D25/425

    摘要： Methods for producing a multilayer body (1), and a multilayer body (1). The method for producing a multilayer body includes: —providing a carrier layer (10); —applying a first replication varnish layer (11) to the carrier layer (10); —molding a plurality of microlenses (12) arranged in the form of a grid into the first replication varnish layer (11a); —applying at least one layer (14) to be structured to the side of the carrier layer (10) opposite the plurality of microlenses; —structuring the at least one layer (14) to be structured using a separate high-resolution mask (23) such that a plurality of microimages (15) arranged in the form of a grid are formed by removal in areas of the at least one layer (14) to be structured. A multilayer body (1) has a carrier layer (10) and a first replication varnish layer (11a), applied to the carrier layer (10), into which a plurality of microlenses (12) arranged in the form of a grid are molded, and with a plurality of microimages (15) arranged in the form of a grid arranged on the side of the carrier layer (10) opposite the plurality of microlenses (12) arranged in the form of a grid.