Antifalsification document having a security thread embedded therein and a method for producing the same
First Claim
1. An antifalsification document comprising a security thread embedded within the document, wherein said security thread is made of a transparent material;
- a first side of said security thread exhibits a printed pattern;
a second side of said security thread spaced away from said printed pattern, defining an outer surface area of said security thread, exhibits an optically effective structure wherein when said printed pattern is viewed through said optically effective structure different areas of said printed pattern are recognizable at different viewing angles, andwherein said printed pattern is configured so that an optical appearance of said security thread changes when viewing angle changes.
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Accused Products
Abstract
The present invention relates to an antifalsification document having an embedded secutiry thread, and to a method for producing the same. This security thread is transparent and has a printed pattern on one side and, on the opposite side, a lenticular structure coordinated with the printed pattern. Such threads change their appearance when the viewing angle changes. To produce the security threads, a transparent film impressed with the desired lenticular relief is directed to a printing apparatus in exact register via guide elements having a relief structure that is negative with respect to the film impression, and then divided in a cutting apparatus into individual threads.
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Citations
22 Claims
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1. An antifalsification document comprising a security thread embedded within the document, wherein said security thread is made of a transparent material;
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a first side of said security thread exhibits a printed pattern; a second side of said security thread spaced away from said printed pattern, defining an outer surface area of said security thread, exhibits an optically effective structure wherein when said printed pattern is viewed through said optically effective structure different areas of said printed pattern are recognizable at different viewing angles, and wherein said printed pattern is configured so that an optical appearance of said security thread changes when viewing angle changes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for processing films in exact register comprising at least two mutually independent processing steps wherein a second and subsequent processing steps are performed in exact register with a first processing step,
said first processing step comprises providing said film with a first relief structure capable of being picked up mechanically; - and
a second step of utilizing at least parts of said relief structure for processing said film in exact register in a subsequent processing step, where exact register is maintained by action of the tools with guide elements exhibiting a second relief structure, negative to said first relief structure. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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Specification