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    • 6. 发明公开
    • APPARATUS FOR ORIENTING MAGNETIC FLAKES
    • VORRICHTUNG ZUR AUSRICHTUNG VONMAGNETSPÄNEN
    • EP3133133A1
    • 2017-02-22
    • EP16180975.1
    • 2007-01-16
    • Viavi Solutions Inc.
    • RAKSHA, Vladimir P.HOLMAN, Jay M.COOMBS, Paul G.MARKANTES, Charles T.PHILLIPS, Roger W.
    • C09J11/02G02B5/08G03H1/00B05D3/00B05D5/06
    • A printing apparatus includes a magnetic rotatable roller with a smooth even outer surface for aligning magnetic flakes in a carrier, such as an ink vehicle or a paint vehicle to create optically variable images in a high-speed, linear printing operation. Images can provide security features on high-value documents, such as bank notes. Magnetic flakes in the ink are aligned using magnetic portions of the roller, that can be formed by permanent magnets embedded in a non-magnetic roller body, or selectively magnetized portions of a flexible magnetic cover of the roller. In some embodiments, the roller is assembled for a plurality of interchangeable sections, which can include spinning magnets. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications.
    • 一种打印设备包括具有光滑均匀的外表面的磁性可旋转辊,用于将载体中的磁片对准,例如油墨车辆或油漆车辆,以在高速线性打印操作中产生光学可变图像。 图像可以为高价值文档(如钞票)提供安全功能。 油墨中的磁性薄片使用可以由嵌入在非磁性辊体中的永磁体形成的辊的磁性部分或辊的柔性磁性盖的选择性磁化部分来形成。 在一些实施例中,辊被组装用于多个可互换部分,其可以包括旋转磁体。 磁性颜料薄片的选择取向可以实现用于装饰或安全应用的各种虚幻的光学效果。