Abstract: The invention is directed to a value or security document which includes a circuit 2, 3, 4, 5, 6 which is provided with a break adapted to be closed by a conducting element 8 and/or by forming the document along a folding line 7.

Abstract: The present invention provides a marking solution that is to a certain extent counterfeit-resistant, that is particularly easy to use, that can be stamped and that can be used for performing day-to-day markings, especially for the identification of documents, and that is suitable for comparatively simple identification. The marking solution includes an aqueous solution with single-stranded nucleic acids or derivatives thereof, in addition to glycerin and polyethylene glycol (PEG).

Abstract: A process for gravure by means of an erasable and reusable gravure form proceeds from a gravure blank form with a base screen which is designed at least for the maximum amount of ink to be transferred. The depressions of the base screen of the gravure blank form are uniformly filled with a liquefiable substance by means of an applicator device and material is then removed from the depressions in conformity to the intended image by means of thermal energy applied by an image-point transfer device. The printing form is then inked by means of an inking system and, finally, is regenerated after the printing process to produce a gravure blank form, wherein the depressions of the base screen are filled again in a uniform manner.

Abstract: The invention relates to a device for validating authenticity features on documents of value and security documents, especially bank notes, personal documents, plastic cards and similar. The device consists of an automatic testing apparatus into which the bank notes for testing are fed and hereby run through a detector device. The detector device is suitable for detecting and evaluating the electroluminescent properties of the authenticity features.