| 摘要 |
The invention relates to a method for individualising security documents. According to the inventive method, a printed image (1) which is identical for a group of security documents, is high-quality in terms of security, and is neutral in terms of use, is overprinted with a second printed image individualising the security document (2). The printing ink of the second printed image (2) is repelled by the printing ink of the first printed image (1). The printing ink of the second printed image thus lodges only in the regions of the first printed image in which there is no printing ink of the first printed image. Preferably, the first printed image is produced according to the line gravure printing method, and the second printed image is produced by means of liquid printing ink, especially according to the ink jet method.
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