Value document, production and verification of value documents
View Patent ↗A sheet-shaped document of value (BN) has luminescent feature substances ( 20, 21 ). Preferably, one luminescent feature substance is present over the entire sheet-shaped document and has a low concentration, whereas a second luminescent feature substance is present at certain partial areas and has a higher concentration.
1. A sheet-shaped document of value, comprising:
a substrate comprising paper pulp; and
a luminescent feature substance incorporated into the substrate;
wherein said luminescent feature substance is present uniformly throughout the substrate at a low concentration in the form of pigments, said low concentration being present over at least an entire surface of the substrate except where the luminescent feature substance is present at higher concentrations at certain partial areas of the substrate and
wherein said same luminescent feature substance is present at the certain partial areas of the substrate at higher concentrations in the form of at least one of a mottling fiber, a planchet, or a print.
2. The document of value according to claim 1 , wherein on illumination with a radiation exciting the luminescent feature substance of the document of value, the luminescent feature substance is configured to produce a luminescence radiation along a measured track having a uniformly distributed base intensity and one or a plurality of peaks with increased intensity only at certain positions of the track, wherein the one or a plurality of peaks corresponds to the certain partial areas having higher concentrations of said luminescent feature substance.
3. The document of value according to claim 1 , wherein the luminescent feature substance is present in at least one of two different forms of application and incorporation.
4. The document of value according to claim 3 , wherein at least one of the two different forms of application and incorporation uses a plurality of feature substances.
5. The document of value according to claim 1 , wherein said certain partial areas comprise partial areas having increased concentrations of the luminescent feature substance, wherein said partial areas have different illumination intensities or geometric forms.
6. The document of value according to claim 1 , wherein a quantity derived from a signal pattern of either or both the feature substance and a quantity derived from a statistical distribution of the signal pattern of the feature substance of the document of value is applied as information onto the document of value.