Security element, security document including a security element, and device and method for producing a security element

A method for producing a security element that includes a plurality of first raised image elements containing intaglio printing ink of a first color, and a plurality of second raised image elements containing intaglio printing ink of a second color that is different from the first color, the first raised image elements and the second raised image elements being arranged on a substrate offset and spaced apart from one another to form an optically variable structure, wherein at least some of the first raised image elements and second raised image elements that are mutually adjacent occlude and/or expose one another to varying degrees from a varying viewing angle, the security element being produced on the substrate by being fed to a gravure printing unit operating according to an intaglio printing method and being printed at a printing nip by a forme cylinder, the forme cylinder, on a circumference thereof, having an image-producing pattern of recesses, of which some first recesses are inked by an inking unit with the intaglio printing ink of the first color, and by which the substrate, when passing through the printing nip, is provided with the first raised image elements, which contain the intaglio printing ink of the first color in an area of an upper side of the first raised image elements, characterized in that on the forme cylinder first recesses are inked, which in a region of a smallest diameter thereof have a width of no more than 1,000 μm, and that the first recesses on the forme cylinder are inked with the first printing ink indirectly or directly by way of an inking unit cylinder configured as a first relief inking cylinder, which, on a circumference thereof, comprises elevations which correspond to individual ones of the first recesses on the forme cylinder and/or two or more non-contiguous elevations, which are individually spaced no more than 2,000 μm apart from respective adjacent elevations, the individual first recesses on the forme cylinder being selectively inked by way of corresponding elevations on the first relief inking cylinder, and that adjacent second recesses on the forme cylinder, which are spaced no more than 1,000 μm apart from the first recesses, are indirectly or directly inked via a second relief inking cylinder with the intaglio printing ink of the second color by way of second elevations that are provided on a circumference of the second relief inking cylinder, and which provide the substrate, when passing through the print nip, with the second raised image elements that are adjacent to the first raised image elements, with the second recesses being inked by way of elevations on the second relief inking cylinder that correspond to individual second recesses on the forme cylinder.

A device for producing a security element that includes a plurality of first raised image elements containing intaglio printing ink of a first color, and a plurality of second raised image elements containing intaglio printing ink of a second color that is different from the first color, the first raised image elements and the second raised image elements being arranged on a substrate offset and spaced apart from one another to form an optically variable structure, wherein at least some of the first raised image elements and second raised image elements that are mutually adjacent occlude and/or expose one another to varying degrees from a varying viewing angle, the device comprising a gravure printing unit operating according to an intaglio printing method to which, on an input side, receives the substrate that is unprinted or already printed according to another printing method and upon which the security element is printed at a printing nip by a forme cylinder, the forme cylinder, on a circumference thereof, having an image-producing pattern of recesses, of which some first recesses can be inked by an inking unit with a first intaglio printing ink, and by which the substrate is provided with the first raised image elements having an upper side to which the intaglio printing ink of the first color is applied, with the gravure printing unit comprising an inking unit cylinder configured as a first relief inking cylinder, via which first recesses on the forme cylinder can be indirectly or directly inked with the first intaglio printing ink, characterized in that on the forme cylinder the first recesses in a region of a smallest diameter thereof have a width of no more than 1,000 μm, and that the first relief inking cylinder, on a circumference thereof, comprises elevations that correspond to individual ones of the first recesses on the forme cylinder and/or two or more non-contiguous elevations, which are individually spaced no more than 2,000 μm apart from respective adjacent elevations, the individual first recesses on the forme cylinder being selectively inkable by way of corresponding elevations on the first relief inking cylinder, and that adjacent second recesses that are spaced no more than 1,000 μm apart from the first recesses are provided on the forme cylinder, which in a region of a smallest diameter thereof have a width of no more than 1,000 μm and can be inked by the inking unit with the second intaglio printing ink that differs from the first intaglio printing ink, and that elevations that correspond to individual ones of the second recesses on the forme cylinder are provided for inking the second recesses on a second relief inking cylinder.