| 摘要 |
<p>A secured document is described with an inserted protection ribbon, which is incorporated into the paper so that is remains freely accessible in some areas. The protection ribbon features a width of over 2 mm. The secured document consists of at least two paper layers, which are manufactured on separate paper producing machines. The protection ribbon is incorporated into the first paper layer, which on its surface features openings or carvings through which the ribbon is accessible on both sides. This first paper layer is covered with at least another paper layer and firmly connected to it, while the other layer features a width of 20 to 50%, preferentially 20% of the total width of the secured document. With the use of especially wide protective ribbons and the possibility to provide particular optical effects, the security against counterfeit of the secured document equipped with it, can be improved.</p> |
