| 摘要 |
The information carrier (1) is of the paper type, having at least two layers (2, 3) which are operatively coupled to one another, in which the graphic information is produced at the time of writing in the interface between two layers by means of activation by physical means such as mechanical pressure, visible or invisible light radiation or heat energy. At least one of the layers (2, 3) is transparent or semi-transparent, in order to be able to see the graphic information after it has been written. The information carrier (1) exhibits security features against counterfeiting, modification or erasure by virtue of the fact that the items of graphic information are present in the inaccessible interface between the at least two layers (2, 3). The information carrier is particularly useful in securities, bank cheques, bills of exchange and other documents in which the information, however recorded, must not be altered and/or any attempt at tampering therewith must be made manifest. |
