Apparatus for orienting magnetic flakes
A printing apparatus includes a magnetic rotatable roller (710, 810) 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 featu...
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Main Authors | , , , , |
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Format | Patent |
Language | English Polish |
Published |
31.10.2016
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Subjects | |
Online Access | Get full text |
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Summary: | A printing apparatus includes a magnetic rotatable roller (710, 810) 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 (710, 810), 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. Selected orientation of the magnetic pigment flakes can achieve a variety of illusive optical effects that are useful for decorative or security applications. |
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Bibliography: | Application Number: PL20070000773T |