| 摘要 |
2096649 9210608 PCTABS00013 This invention is concerned with a security article including security paper especially for banknotes which comprises at least one elongate security element, said security element being visually detectable in transmitted light to display portions which transmit light and portions which are opaque, wherein said security element comprises a plurality of layers including a light-transmitting support layer and two or more series of opaque regions which are separated by at least said support layer, the arrangement of the opaque regions being such that at certain parts of the security element the said regions overlap to prevent light transmission and elsewhere along the length of the security element the opaque regions do not overlap or partially overlap such that light transmission through the security element can occur. The security article may be a credit card, identity card or travel document. |
