IN LINE MANUFACTURING OF DOCUMENTS WITH SECURITY ELEMENTS

摘要

A method and apparatus for in-line manufacture of a security document with a structured security element is provided in which a continuous web of document substrate is fed through a series of processing stations. The processing stations include a station for forming a structured security element in a radiation sensitive coating applied to the document substrate, and at least one station for applying at least one additional layer to the document substrate excluding the security element area. In a security document manufactured with the method or apparatus, the additional layer or layers have a combined thickness which is preferably substantially equal to the height of the structured security element or which differs from the height of the structured security element by a predetermined amount.

主权项

1. A method of manufacturing a security document with a structured security element, the method comprising:
(a) providing a document substrate having a first surface on one side and a second surface on the opposite side; (b) applying a radiation sensitive coating to a security element area on the first surface of the document substrate; (c) forming a structured security element in the radiation sensitive coating, the security element having a structure extending to a height from the first surface; (d) applying one or more additional layers to the first surface of the substrate, excluding the security element area; (e) wherein the one or more additional layers have a combined thickness which differs from the height of the security element structure by less than 50% of the height of the security element structure and/or by less than 10 μm.