| 摘要 |
<p>Apparatus for applying markings to substrates, particularly documents for authentication purposes, consists of a platen (90, 92) on which the substrate to be marked is located, means for feeding a transfer tape (44) to lie over the platen and a reciprocable heated die (34) adapted to press the transfer tape on to the substrate when it is lying on the platen with sufficient heat and pressure to transfer an image from the transfer tape to the substrate. The tape supply is mounted on a carriage (10, 11) which moves towards and away from the platen, first clamping the substrate against the platen, then bringing the transfer tape adjacent to the substrate and thereafter bringing the heated die into contact with the transfer tape, whereafter the sequence of operations is reversed in order to leave the document marked and unclamped. The apparatus is particularly useful for applying holographic images from tape on to documents such as cheques for authentication purposes.</p> |
