SURFACE TREATED SECURITY PAPER AND METHOD AND DEVICE FOR PRODUCING SURFACE TREATED SECURITY PAPER

摘要

The present invention relates to security paper (1) formed from base paper provided with a surface treatment layer on at least one side of the paper, characterized in that the layer thickness locally deviates markedly from the layer (10) thickness of the remaining dominant paper surface, and in that the local deviation forms a distinctive mark (2) in the paper. The present invention also relates to a method and to a device for producing surface treated security paper.