Abstract: The invention relates to a security element for safeguarding a value document, comprising a carrier substrate, a coating provided with an optical surface mark, and a heat-sealable adhesive layer suitable for bonding the security element to a value document substrate, wherein the surface of the adhesive layer is provided with a coating which can be washed off on contact with washing liquid.

Abstract: An optically variable security element for protecting a document of value has a first machine-readable feature material and an optical functional layer, which imparts an optically variable appearance to the security element when viewed. Provision is made that the security element is formed in multiple layers with an internal foil sheet, which has a first side and an opposite second side, the foil sheet being provided at least on the first side with an adhesive layer for connection to the document of value and on the second side with the optical functional layer, and the first machine-readable feature material being arranged in the foil sheet or on the second side of the foil sheet.

Abstract: A security element for a value document, wherein the security element includes: an optically variable primary surface pattern that has a metal layer with a relief structure; and at least one concealed secondary surface pattern having a plurality of elements that perforate the metal layer and at least one luminescence layer that is arranged at least in the region of the secondary surface pattern.

Abstract: Security element transfer materials for transferring security elements have a microoptical authenticity feature to an article of value. The microoptical authenticity features create an optical effect by interaction of a first microoptical arrangement having focusing elements with a second microoptical arrangement having micromotif elements. The security element transfer material has a temporary carrier in the form of a layer composite material. The temporary carrier consists of a first temporary carrier substrate and a second temporary carrier substrate, which may be inextricably adhesive-bonded by means of an adhesive layer. The outline shapes of the security elements to be transferred are incised or have been precut. The second temporary carrier substrate is not cut, such that the temporary carrier can be separated off as a complete carrier layer composite. A permanent carrier is bonded inextricably to the microlenses. A transfer adhesive enables adhesion to the final substrate of the article of value.

Abstract: A security element is arranged to safeguard valuable articles, featuring a motif layer based on a liquid-crystal material that forms a latent motif. The security element includes a first embossing varnish layer on a carrier film, with a motif layer partly on this varnish, based on nematic liquid crystals. A second embossing varnish layer covers the surface. The facing surface of the first varnish has an embossing with at least two regions featuring different alignment structures, creating a second latent motif. These alignment structures include an aperiodic grating with varying grid spacing. The motif layer, forming a first latent motif, overlaps the second latent motif regions. The nematic liquid-crystal material is aligned by the motif-forming regions, producing a discernible motif when viewed through a polarizer. The second varnish layer also has an embossing for a micro-optical relief structure and reflection-enhancing coating.

Abstract: A security element for a value document includes: a first concealed motif region having a first luminescence layer with at least one first excitation wavelength in the UV-A range; and a second concealed motif region having a second luminescence layer with at least one second excitation wavelength in the UV-A range that is different from the at least one first excitation wavelength.

Abstract: A method for manufacturing platelet-shaped effect pigments includes the steps of a) providing a carrier substrate; b) applying aqueous washing ink droplets to the carrier substrate in first regions forming a first motif; c) applying a reflective coating to the carrier substrate such that a reflective coating is deposited on the carrier substrate in the form of a regular contiguous grid in second regions forming a second motif outside the first regions forming the first motif, wherein the first regions form the first motif and have the washing ink droplets form regular islands within the regular contiguous grid, and a reflective coating is deposited above the washing ink droplets in the first regions forming the first motif; and d) removing the washing ink droplets in the first regions together with the reflective coating present thereon and isolating the removed reflective coating in the form of platelet-shaped effect pigments.

Abstract: An optically variable security element is provided for safeguarding articles of value. The security element has a feature layer containing, in a common plane, first and second feature regions arranged so as to accurately fit together. The first feature regions contain a first embossing lacquer layer of a first embossing lacquer into which an embossed structure that creates a first optical effect has been embossed. The second feature regions contain a second embossing lacquer layer of a second embossing lacquer into which an embossed structure that creates a second, different optical effect has been embossed. The first and second embossing lacquers have different solidification properties and different optical properties. A production process is provided for such an optically variable security element, and to embossing arrangements comprising a semi-finished security element product and means of impressing an embossed structure.

Abstract: A security element for safeguarding of articles of value, has a motif layer based on a liquid-crystalline material intended and destined to form a latent motif. The security element includes a first embossing varnish layer disposed on a carrier film, a partial motif layer based on a nematic liquid-crystalline material, and a single- or multilayer second embossing varnish layer present over the full area. The first embossing varnish layer has been provided with an embossment having at least two regions with alignment structures of different orientation for formation of a second latent motif. The motif layer, in the form of a first latent motif, is disposed in regions directly atop the first embossing varnish layer and in an overlapping arrangement with the regions that form the second latent motif.

Abstract: A platelet-shaped magnetic effect pigment is provided for use in a printing ink, and includes a layer construction with a magnetic layer and at least one optical functional layer, such that the magnetic layer is based on a magnetic material having a column-shaped nanostructure and the magnetic columns respectively have a largely uniform preferential magnetic direction deviating from the platelet plane.

Abstract: The invention relates to a mask exposure method comprising the following steps: —the providing of a carrier substrate; the print application of a radiation-crosslinkable washable dye layer to the full area of the carrier substrate; —the exposure of the radiation-crosslinkable washable dye layer in defined regions to radiation by means of a radiation mask, such that the washable dye is cured in the defined regions; —the applying of a metallization over the full area; —the removing of the non-radiation-exposed washable dye outside the defined regions together with the metal present thereon with the aid of a solvent, such that the resultant carrier substrate has cured washable dye with metal applied thereto only in defined regions.

Abstract: A security element for documents of value or the like, has a substrate which has been coated with a heat-sealing adhesive that is non-tacky at room temperature and suitable for applying the security element to a substrate of a document of value. The heat-sealing adhesive contains a radiation-crosslinkable component and a reactive diluent.

Abstract: An optically variable security element is provided for safeguarding articles of value. The security element has a feature layer containing, in a common plane, first and second feature regions arranged so as to accurately fit together. The first feature regions contain a first embossing lacquer layer of a first embossing lacquer into which an embossed structure that creates a first optical effect has been embossed. The second feature regions contain a second embossing lacquer layer of a second embossing lacquer into which an embossed structure that creates a second, different optical effect has been embossed. The first and second embossing lacquers have different solidification properties and different optical properties. A production process is provided for such an optically variable security element, and to embossing arrangements comprising a semi-finished security element product and means of impressing an embossed structure.

Abstract: The invention relates to a mask exposure method comprising the following steps:—the providing of a carrier substrate; the print application of a radiation-crosslinkable washable dye layer to the full area of the carrier substrate;—the exposure of the radiation-crosslinkable washable dye layer in defined regions to radiation by means of a radiation mask, such that the washable dye is cured in the defined regions;—the applying of a metallization over the full area;—the removing of the non-radiation-exposed washable dye outside the defined regions together with the metal present thereon with the aid of a solvent, such that the resultant carrier substrate has cured washable dye with metal applied thereto only in defined regions.

Abstract: A method for manufacturing an optically variable security element, so that for a viewer of the security element, a first color impression is created through the combination of at least the color effects of a first embossing lacquer layer and the coating, and a second, different color impression is created through the combination of the color effects of at least the first embossing lacquer layer, a second embossing lacquer layer and a coating.

Abstract: A platelet-shaped magnetic effect pigment for use in a printing ink, includes a layer construction with a magnetic layer and at least one optical functional layer. The magnetic layer is based on magnetic particles fixed within a solid matrix and having a largely uniform preferential magnetic direction deviating from the platelet plane.

Abstract: A platelet-shaped magnetic effect pigment is provided for use in a printing ink, and includes a layer construction with a magnetic layer and at least one optical functional layer, such that the magnetic layer is based on a magnetic material having a column-shaped nanostructure and the magnetic columns respectively have a largely uniform preferential magnetic direction deviating from the platelet plane.

Abstract: A method for manufacturing an optically variable security element, so that for a viewer of the security element, a first color impression is created through the combination of at least the color effects of a first embossing lacquer layer and the coating, and a second, different color impression is created through the combination of the color effects of at least the first embossing lacquer layer, a second embossing lacquer layer and a coating.

Abstract: A method for manufacturing platelet-shaped effect pigments includes the steps of a) providing a carrier substrate; b) applying aqueous washing ink droplets to the carrier substrate in first regions forming a first motif; c) applying a reflective coating to the carrier substrate such that a reflective coating is deposited on the carrier substrate in the form of a regular contiguous grid in second regions forming a second motif outside the first regions forming the first motif, wherein the first regions form the first motif and have the washing ink droplets form regular islands within the regular contiguous grid, and a reflective coating is deposited above the washing ink droplets in the first regions forming the first motif; and d) removing the washing ink droplets in the first regions together with the reflective coating present thereon and isolating the removed reflective coating in the form of platelet-shaped effect pigments.

Abstract: A reflective security element for checking the authenticity with polarized light, has a retroreflective layer and a birefringent layer arranged in a structured manner on the retroreflective layer.