The present invention is directed at a method for manufacturing a card-shaped data carrier, in which a material from nature, for example wood, is installed in a particularly advantageous manner. The invention is further directed at a correspondingly adapted apparatus for manufacturing the card-shaped data carrier as well as at the data carrier itself. Further, a computer program product is proposed, having control commands that implement the method and/or operate the proposed apparatus.

Provided is an information display medium that can enhance a forgery prevention effect. An information display medium (100) includes a light reflection layer (20) made of a metal or a metallic oxide and partially or fully placed on one surface of a substrate, and the light reflection layer (20) includes a first region (30) where first information is displayed by either of or a combination of an outline shape and a shape of an uneven region, and a second information display region (21a) where identification information formed by partial material removal of the light reflection layer (20), the second information display region being set to partially or fully overlap with the light reflection layer (20) where the first information is displayed in the first region (30).

A method for producing a multilayer film, with the steps: a) providing a base body with a carrier ply and a transfer ply, which comprises at least one layer; b) applying an in particular UV-curable adhesive to at least one partial area of the transfer ply of the base body; c) applying a stamping foil which comprises a carrier ply and a transfer ply, with the result that the transfer ply of the stamping foil comes into contact with the transfer ply of the base body coated with adhesive; d) curing the adhesive by UV irradiation; e) removing the carrier ply of the stamping foil.

A method for producing a multilayer film, with the steps: a) providing a base body with a carrier ply and a transfer ply, which comprises at least one layer; b) applying an in particular UV-curable adhesive to at least one partial area of the transfer ply of the base body; c) applying a stamping foil which comprises a carrier ply and a transfer ply, with the result that the transfer ply of the stamping foil comes into contact with the transfer ply of the base body coated with adhesive; d) curing the adhesive by UV irradiation; e) removing the carrier ply of the stamping foil.

A method for producing a security element, wherein a base film is provided, which has a first carrier film and a single- or multilayered decorative ply, wherein a first adhesive layer is applied to a second carrier film and a second adhesive layer is applied to the surface of the first carrier film facing away from the decorative ply or wherein the second adhesive layer is applied to the surface of the first carrier film facing away from the decorative ply and the first adhesive layer is applied to the second adhesive layer, and wherein the second carrier film is applied to the first carrier film such that the first adhesive layer and the second adhesive layer are arranged between the first carrier film and the second carrier film.

A method for producing a security element, wherein a base film is provided, which has a first carrier film and a single- or multilayered decorative ply, wherein a first adhesive layer is applied to a second carrier film and a second adhesive layer is applied to the surface of the first carrier film facing away from the decorative ply or wherein the second adhesive layer is applied to the surface of the first carrier film facing away from the decorative ply and the first adhesive layer is applied to the second adhesive layer, and wherein the second carrier film is applied to the first carrier film such that the first adhesive layer and the second adhesive layer are arranged between the first carrier film and the second carrier film.

An object of the present invention is to provide a thin volume hologram sheet to be embedded sufficiently resistant to a mechanical stress such as a stress including a tensile stress, a shear stress and a compression stress at the time of processing even under a heating condition, a forgery prevention paper and a card using the same. The object is achieved by providing a volume hologram sheet to be embedded comprising a volume hologram layer, and a substrate disposed only on one side surface of the volume hologram layer using an adhesion means, wherein a peeling strength of the volume hologram layer and the substrate is 25 gf/25 mm or more.

An object of the present invention is to provide a thin volume hologram sheet to be embedded sufficiently resistant to a mechanical stress such as a stress including a tensile stress, a shear stress and a compression stress at the time of processing even under a heating condition, a forgery prevention paper and a card using the same. The object is achieved by providing a volume hologram sheet to be embedded comprising a volume hologram layer, and a substrate disposed only on one side surface of the volume hologram layer using an adhesion means, wherein a peeling strength of the volume hologram layer and the substrate is 25 gf/25 mm or more.

A tamper-evident security device including a first part comprising an optically transparent layer including an array of separate optical focussing elements. A second part comprises an array of separate image elements collectively defining an image viewable through the first part. Each of the optical focussing elements is positioned to reveal therethrough a view of one or more of said image element(s). An optically transparent adhesive layer between the first part and the second part which retains the optical focussing elements so positioned with respect to the image elements thereby in cooperation to reveal the image. The first part is mechanically separable from the second part by release of the adhesive layer to cease the cooperation.

The present invention provides an anti-counterfeit marking technique for verifying authenticity of objects using x-ray fluorescence (XRF) analysis.