| 摘要 |
The invention relates to a postage stamp sheet, the individual postage stamps being separated from each other by a postage stamp perforation. In order to be able to use such postage stamps as scratch-off tickets, according to the invention, each postage stamp has an individually different area and at least part of the individually different area is covered by a scratch-off film, such as a heat stamping film. The individually different area can be applied by digital printing and the remainder by another printing method, such as gravure printing. In order to increase the security, it is advantageous to use a printing ink having characteristic luminescence, such as anti-Stokes luminescence, for the gravure printing method. |
