| 摘要 |
<p>A security fibre 51, 52, comprises a coloured region 21-24 and a margin 31-34 adjacent to the coloured region. The fibre may include a second margin; preferably the margin(s) are unprinted and/or transparent. The coloured region may comprise coloured stripes or a pattern, preferably the region is only visible under UV light. The fibre may comprise a layer of varnish over at least the coloured region. The fibre may be printed on a transparent substrate or a substrate with no background luminescence. Methods of manufacturing security fibres and manufacturing paper products containing the security fibres are also disclosed.</p> |
