RADIATION CURABLE EMBOSSED INK SECURITY DEVICES FOR SECURITY DOCUMENTS

摘要

A security document and a method of manufacturing a security document are provided in which a radiation curable ink (18) is applied to at least one side of a substrate (11 ) including at least one region of transparent plastics material forming a window or half-window area (16; 26). The ink is embossed while soft and cured with radiation (242) to form an embossed security device (19) within the window or half-window area including one or more of a diffractive structure, a lens structure or other security element having a relief structure.