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Planchettes are small coloured discs, which are incorporated into the paper in a similar way to coloured fibres. Planchettes may also be metallic or transparent; they may also fluoresce under UV light or be made of iridescent substance that exhibits colour shifts.

Special planchettes for use in driving licences respond to manipulation attempts by bleeding through thermal paper in a signal colour.

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If you have any questions about our products, please call us on: +49(0)2304/759-0

Diagramm Halbach GmbH & Co. KG
Am Winkelstück 14
58239 Schwerte