摘要:
The invention relates to a value document, in particular a bank note, having a value document substrate and at least three different feature substances for checking the value document, which has a first feature substance, and wherein second and third feature substances are applied to the value document substrate in a printing ink jointly. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range.
摘要:
This invention relates to a value document, in particular a bank note, having a value document substrate and at least two different feature substances for checking the value document. According to the invention, a first feature substance is incorporated into the volume of the substrate of the value document, and a second feature substance applied to the value document substrate in the form of a coding.
摘要:
The invention relates to a value document, in particular a bank note, having a value document substrate and at least three different feature substances for checking the value document, which has a first feature substance, and wherein second and third feature substances are applied to the value document substrate in a printing ink jointly. The second feature substance is formed by a luminescent substance, and the third feature substance by a material absorbent in a special spectral range.
摘要:
The invention relates to a value document having a machine-readable authenticity mark. According to the invention the authenticity mark comprises a luminescent marking substance and a marking substance absorbing in the infrared spectral range.
摘要:
A security element that can be embedded in the form of a thread or strip in a security document, in particular a paper of value, is composed of two carrier sheets, each of which bears each of the marking substances allowing for detection of authenticity. The two carrier sheets are put together in such a way that the marking substances to be protected from mechanical abrasion and other external influences come to lie on the inside.The thread not only offers special protection for the marking substances, but can also be embedded in the paper substance easily due to its symmetrical structure and without showing any tendency to curl.
摘要:
In order to increase the protection of security documents such as ban notes, etc., against forgery, security threads are embedded in the document which have at least two areas extending in the longitudinal direction of the thread and differing in their physical properties. The thread is preferably a coextruded multicomponent synthetic thread whose individual components contain additives such as dyes or fluorescent substances and/or particles having electrical or magnetic properties. The testing of the authenticity of the security thread is directed toward the presence of these additives and their mutual geometrical distribution in certain areas of the security thread.
摘要:
Security paper with authenticity characteristics embodied therein or printed thereon which are both ferrimagnetic and also only slightly absorbed in the infrared spectral region.The presence of both properties at the same position on the security paper is tested, wherein both tests can preferably be carried out simultaneously. Materials which show this rare combination of properties are some ferrites, ferrimagnetic garnet compounds and the so-called green ferromagnetic compounds.
摘要:
The invention concerns a printed valuable document with at least one authentication feature in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs in the visible region of the spectrum, is excitable at least in parts of the visible region of the spectrum and transparent at least in partial areas of the IR spectral region. The luminescent substance is present in the volume of the valuable document in such a concentration that the characteristics of the valuable document just remain unimpaired. The rare earth metal concerned is thulium.
摘要:
The invention concerns a printed valuable document with at least one authentication mark in the form of a luminescent substance based on a host lattice doped with at least one rare earth metal. The host lattice largely absorbs light in the entire visible region of the spectrum, is excitable in substantial parts of the visible region of the spectrum, and is at least partially transparent at least in the wavelength range between 0.8 &mgr;m and 1.1 &mgr;m. The host lattice also features a garnet or perovskite structure. The rare earth metal emits light in the wavelength range between 0.8 &mgr;m and 1.1 &mgr;m.
摘要:
Security paper with narrow band luminescing authenticity characteristics which can only be excited in substantially the same wavelength region in which it also emits. With these authenticity characteristics therefore the authenticity signal is overlapped or covered by the test signal of several orders of magnitude stronger. The authenticity of the security papers cannot accordingly be tested with the normal processes or devices for determining of luminescence. The test devices used take advantage of the decay behavior of the luminescence emission for detection. The authenticity characteristics can be added to the paper material, the printing ink used, further mottling fibres or security threads.