Planchettes are a well-known security feature and have been used for many years. Although they're not as widespread as fibres, they nonetheless provide effective and unique possibilities offering some advantages over fibres.
Planchettes are usually small circular discs, which can be coloured or invisible with U.V. fluorescence, however they can also take other forms and comprise different effects:
Optically Variable Planchettes are made from iridescent, or holographic material. Printing or copying techniques cannot replicate the iridescent effect and the Planchettes appear as black dots on a copied document.
UV Switch Planchettes are another type of optically variable effect that makes use of transmitted and reflected U.V. fluorescence. By combining several fluorescent layers and U.V. filters, we create a unique and impressive colour switch that's almost impossible to counterfeit. By combining this effect with our Micro-Marque Planchettes, a sophisticated public feature with covert security is created.prev: Rainbow Fibres next: SlarLites™