Abstract:
The invention refers to a measurement probe for measuring magnetization data of at least one item (7), specifically a security document comprising at least one magnetic security material (M), said measurement probe comprising at least one core free magnetizing coil (3) characterized in that at least two magnetic field sensors (4s, 4c, 8s, 8c) are disposed at both ends inside said coil (3) at its both ends. The invention relates further to an authentication device comprising said measurement probe and to an authentication method carried out by means of said measurement probe and authentication device.
Abstract:
The present invention relates to coating compositions, preferably printing inks for security applications comprising at least one organic resin, at least one pigment and optionally at least one organic solvent. Said pigment comprises glass ceramic composite particles, containing at least one crystalline particle embedded in a glass matrix. Said glass ceramic particles have a particle size in the range of between 0.1 &mgr;m to 50 &mgr;m. Preferably active ions selected from the group of the rare-earth elements are incorporated into the crystalline phase of the composite to provide the glass ceramics with luminescent up- and down-converting characteristics. Glass ceramic luminescent have excellent physical and chemical stability. The glass matrix permits as well the stabilization of the photophysically interesting halide host crystals which have low phonon energies. Such materials provide unusual excitation and emission properties.
Abstract:
The invention refers to a measurement probe for measuring magnetization data of at least one item (7), specifically a security document comprising at least one magnetic security material (M), said measurement probe comprising at least one core free magnetizing coil (3) characterized in that at least two magnetic field sensors (4s, 4c, 8s, 8c) are disposed at both ends inside said coil (3) at its both ends. The invention relates further to an authentication device comprising said measurement probe and to an authentication method carried out by means of said measurement probe and authentication device.
Abstract:
In a load-bearing construction (1) having at least one load-bearing element (2), the load-bearing element (2) has at least one cavity (5) in which at least one rod (4) is disposed, the total cross-sectional area of all rods (4) each arranged in a cavity (5) being smaller than the cross-sectional area of this cavity (5), and the remaining volume of the cavity (5) being filled with a material (6). The rod (4) is displaceable along its length relative to the load-bearing element (2) when the load-bearing element (2) is deformed, the rod (4) being non-displaceably fixed at only one point relative to the load-bearing element (2) and being designed such that it dissipates energy upon the occurrence of a relative displacement with respect to the load-bearing element (2).
Abstract:
In a load-bearing construction (1) having at least one load-bearing element (2), the load-bearing element (2) has at least one cavity (5) in which at least one rod (4) is disposed, the total cross-sectional area of all rods (4) each arranged in a cavity (5) being smaller than the cross-sectional area of this cavity (5), and the remaining volume of the cavity (5) being filled with a material (6). The rod (4) is displaceable along its length relative to the load-bearing element (2) when the load-bearing element (2) is deformed, the rod (4) being non-displaceably fixed at only one point relative to the load-bearing element (2) and being designed such that it dissipates energy upon the occurrence of a relative displacement with respect to the load-bearing element (2).
Abstract:
A luminescent probe marking is excited with at least one excitation pulse of at least one excitation source. The probe intensity values of emission intensity from emission radiation of the luminescent probe marking are measured in response to the excitation pulse(s) at time intervals. A probe intensity-versus-time emission function is formed of the probe intensity values, and the probe intensity-versus-time emission function is compared with at least one reference intensity-versus-time emission function after the probe intensity-versus-time emission function and the reference intensity-versus-time emission function have been normalized.