A process for preventing the falsification (forging) of documents by copying

摘要

It is characterized in that the paper in question is treated with a preparation consisting of a suspension of particles of mica covered with titanium dioxide such that said preparation arranged with a suitable binder is deposited in the form of a thin layer on the surface of the paper. Applicable to the manufacture of papers which cannot be photocopied and documents and banknotes/tickets which cannot be falsified. <IMAGE>