摘要:
The invention relates to a method for producing a value document, comprising the steps of: a) printing a value document substrate with an oxidatively drying ink; b) treating the printed value document substrate with UV radiation or with ozone; and c) drying the printed valuable document substrate, which has been treated with UV radiation, at room temperature or at an elevated temperature.
摘要:
The invention relates to a security element (2) for data-bearing devices (1), comprising a piezochromic liquid crystal material (3, 5) that is arranged within a layer.
摘要:
The invention relates to an optically variable security element (12) for safeguarding objects of value with an optically variable colored layer (40), which contains first optically variable effect pigments (34) for producing a visual impression, which depends on the viewing angle, and second effect pigments (36), which can be aligned reversibly by an external magnetic field, wherein the degree of the markedness of the visual impression of the optically variable effect pigments (34), which is dependent on the viewing angle, depends on the orientation of the magnetically alignable effect pigments (36) relative to the plane of the colored layer (40).
摘要:
The invention relates to a method for producing a security element (12) for securing valuable objects, comprising a covering ink layer (14) that includes a background zone (16) as well as a marking zone (18) in the form of patterns, characters, or a code, which are introduced using laser radiation and can be detected both visually (20) and by machine (22). Said method comprises the step of applying a covering ink layer (14) containing multilayer pigments (60) to a substrate, and the step of introducing a mark (18) in the form of patterns, characters, or a code into the ink layer (14) using laser radiation, the quality of the multilayer pigments (60) and the intensity of the laser radiation being selected such that the mark (18) is brighter than the background zone (16) in the visible spectral range and can thus be visually (20) detected while being more absorbent than the background zone (16) in the infrared spectral range and thus being detectable by machine (22).
摘要:
A security arrangement comprises a security element (2), having in at least one first partial region a first micromotif grid, and a verification means (3) that is arranged in the direction of view of an observer in front of the security element for verifying the security element. A first motif that cannot be detected on the security element (2) is made detectable for an observer, wherein the first motif grid is designed such that the first motif is a dynamic motif, the size of which can be varied by rotating the verification means (3) between a first and a second angular alignment relative to the security element (2).
摘要:
The invention relates to a valuable object comprising a security element which is provided with at least one first and one second liquid crystalline material. The first material has thermochromic properties while the second material has an optically variable effect.