Optical device that produces flicker-like optical effects

    公开(公告)号:US11446950B2

    公开(公告)日:2022-09-20

    申请号:US17157734

    申请日:2021-01-25

    摘要: An optical device that produces flicker-like optical effects is provided. The optical device employs directionally cured image icons. Specifically, the optical device is made up of at least one arrangement of image icons formed from one or more cured pigmented materials, and at least one arrangement of optionally embedded focusing elements positioned to form one or more synthetic images of at least a portion of the arrangement(s) of image icons. Some or all of the pigmented material(s) is cured using collimated light directed through the focusing elements toward the arrangement(s) of image icons at one or more angles relative to a surface of the optical device to form directionally cured image icons. The synthetic image(s) of the directionally cured image icons is viewable at the cure angle(s) and therefore visually appears and disappears, or turns on and off, as the viewing angle of the device moves through the cure angle(s).

    SECURITY ELEMENT WITH MACHINE-READABLE FEATURES

    公开(公告)号:US20220194117A1

    公开(公告)日:2022-06-23

    申请号:US17610800

    申请日:2020-05-06

    IPC分类号: B42D25/369 B42D25/355

    摘要: A security element has machine-readable magnetic security features in the form of at least two magnetic materials which have different magnitudes of coercive force and which are provided as a mixture in at least one printing ink that is applied onto a carrier substrate, wherein the at least one printing ink is provided in at least two regions on the security element with the same thickness and/or different thicknesses, and a defined mixture ratio of the at least two magnetic materials with different magnitudes of coercive force is provided in the at least one printing ink.

    METHOD FOR CONNECTING TAPES, TAPE CONNECTING DEVICE, PROCESSING SYSTEM AND USE

    公开(公告)号:US20220089397A1

    公开(公告)日:2022-03-24

    申请号:US17542559

    申请日:2021-12-06

    摘要: The method relates to tape connecting device (1) and a method for connecting a first tape to a second tape for providing a tape string. In the tape connecting device (1) when continuously conveying the first tape an end section of the first tape is connected to a start section of the second tape by an adhesive connection by a liquid (in particular water) arranged in a connecting section. Furthermore, the invention relates to a method for connecting two tapes, a processing system and a use of a method.
    The inventive tape connecting device (1) and the method can in particular be used for a continuous provision of a security tape for a security document as a banknote.

    SECURITY PAPER
    9.
    发明申请

    公开(公告)号:US20210146712A1

    公开(公告)日:2021-05-20

    申请号:US17048796

    申请日:2019-04-17

    发明人: Henri ROSSET

    摘要: A security sheet including at least one paper substrate, at least one watermark produced in the paper substrate, the watermark having an exterior outline, at least one aperture of regular edge, produced by ablation of the paper substrate, and at least one security film that is at least partially superposed on the watermark and on the aperture. In the sheet, the at least one aperture lies inside the watermark, such as bounded by its exterior outline.