(EN)
A security document or token such as a banknote (40) is provided which has a transparent portion (42) of plastics material which includes a security device (50). The region (44) surrounding the transparent portion (42) and preferably all the remaining part of the banknote (40) is printed with indicia. The security device (50) includes regions (52, 54, 56 and 58) of embossed lines extending at different angles to each other defining different shapes that are visible to a greater or lesser extent upon transmission and reflection of light as the note is tilted, rotated or viewed from different angles relative to a light source. The embossed lines in some of the regions (52 and 54) are finer than coarser and deeper and more widely spaced lines in the other regions (56 and 58). The coarser, deeper lines are of such a thickness and width to be detected by touch in addition to being visible by the naked eye. There is also provided a method of and apparatus for producing a banknote with a security device in accordance with the invention in which the transparent portion of the note is embossed during an intaglio printing process.
(ZH) 一种诸如钞票的防伪票据(40)，它具有一由塑料材料构成的其上含有一防伪图案(50)的透明部分(42)。围绕着透明部分(42)的区域(44)以及最好是钞票(40)的所有其余部分印有标记。防伪图案(50)包括含有互成不同角度的压纹线的区域(52、54、56和58)，压纹线所定义的不同形状在钞票斜置、旋转或相对于光源从不同角度观察时，在透射或折射过不同程度的光线下看见。在一些区域(52和54)内的压纹线比其它区域(56和58)内较粗、较深、间距较宽的压纹线来得更细一些。较粗、较深的线其厚度和宽度除用肉眼观察可见外，还可经触摸感觉到。一种生产含有防伪图案的钞票的方法和设备，钞票的透明部分在凹板印刷过程中留有压纹。