Manufacture of a sheet element having a reflective anti-counterfeiting device.

摘要

The present invention provides a method for the manufacture of a sheet element 1 having a reflective anti-counterfeiting device 2 and in particular provides a method for the manufacture of a security document. The method comprises the steps of applying a continuous band of a foil material in the form of a repetitive pattern to a portion of the surface of the sheet element and overprinting at least a part of the foil material with a security tint 3. The present invention envisages the use of hot foil stamping or a similar method such as a transfer process to apply a metallic foil or similarly reflective film on to a surface of the material to be used for printing a security document. The present invention provides security documents having improved protection against counterfeiting and is particularly applicable to the manufacture of bank notes.