A security element includes a first transparent film, on which a holographic layer is formed having a holographic surface structure, a reflective layer arranged in contact with the holographic layer having a pattern of non-transparent regions and transparent regions, a color changing layer, and a photoactive layer having dark regions and transparent regions. In first regions, parts of the non-transparent regions of the reflective layer are not overlapped by the dark regions of the photoactive layer. In second regions, the color changing layer is backed by the dark regions of the photoactive layer. In third regions, the transparent regions of the photoactive layer are at least partly in register with the transparent regions of the reflective layer so that the third regions are continuous when passing from patterns outside the non-transparent regions of the reflective layer to patterns outside the dark regions of the photoactive layer.

A security element, called a security dome, intended to be glued onto an electronic board. The security element includes at least: a metal part intended to be in contact with at least one electrical circuit of the electronic board; and a protective part covering the metal part and having a first face comprising an adhesive portion intended to ensure the gluing of the security element on the electronic board by an automatic assembly method having at least one reflow step. The metal part and protective part are resistant to temperatures used during the reflow step.

A security element, called a security dome, intended to be glued onto an electronic board. The security element includes at least: a metal part intended to be in contact with at least one electrical circuit of the electronic board; and a protective part covering the metal part and having a first face comprising an adhesive portion intended to ensure the gluing of the security element on the electronic board by an automatic assembly method having at least one reflow step. The metal part and protective part are resistant to temperatures used during the reflow step.

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).

An image display element includes a display layer configured to display first to n-th (where n is an integer of 2 or more) images; a light-shielding pattern layer disposed opposite to the display layer and having alternately disposed light-shielding parts and light-transmitting parts, and a transparent layer disposed between the display layer and the light-shielding pattern layer. The display layer contains a coloring matter, where the coloring matter forms first to n-th images; each of the first to n-th images is divided in a discrete manner corresponding to the arrangement pattern of the light-transmitting parts; and an image visible through the light-shielding pattern layer changes depending on the angle from which the light-shielding pattern layer is viewed.

An image display element includes a display layer configured to display first to n-th (where n is an integer of 2 or more) images; a light-shielding pattern layer disposed opposite to the display layer and having alternately disposed light-shielding parts and light-transmitting parts, and a transparent layer disposed between the display layer and the light-shielding pattern layer. The display layer contains a coloring matter, where the coloring matter forms first to n-th images; each of the first to n-th images is divided in a discrete manner corresponding to the arrangement pattern of the light-transmitting parts; and an image visible through the light-shielding pattern layer changes depending on the angle from which the light-shielding pattern layer is viewed.

Transaction and identification cards formed from raw bamboo assemblies including one or more raw bamboo layers optionally adhered to a paper backer. In one embodiment, a single raw bamboo assembly is adhered to a base or core substrate. Optionally, a second bamboo assembly is coupled to the first bamboo assembly, with or without a core layer sandwiched in between the bamboo assemblies, such that the card's top face includes a first bamboo layer and the card's bottom face includes a second bamboo layer. One or more image or graphic layers are then either printed directly onto the raw bamboo layer or laminated thereto. Optional protective substrates, films, or coatings are applied to or over the bamboo assembly to protect by sandwiching the one or more ink or printed layers between the protective layer and the raw bamboo layers.

Transaction and identification cards formed from raw bamboo assemblies including one or more raw bamboo layers optionally adhered to a paper backer. In one embodiment, a single raw bamboo assembly is adhered to a base or core substrate. Optionally, a second bamboo assembly is coupled to the first bamboo assembly, with or without a core layer sandwiched in between the bamboo assemblies, such that the card's top face includes a first bamboo layer and the card's bottom face includes a second bamboo layer. One or more image or graphic layers are then either printed directly onto the raw bamboo layer or laminated thereto. Optional protective substrates, films, or coatings are applied to or over the bamboo assembly to protect by sandwiching the one or more ink or printed layers between the protective layer and the raw bamboo layers.

The present invention relates to a security element for a security paper, a valuable article or the like having a substrate (1), the substrate being at least partially furnished with a coating (2) that is substantially tack free at room temperature, and the coating (2) including at least one radiation-crosslinkable component.

The present invention relates to a security element for a security paper, a valuable article or the like having a substrate (1), the substrate being at least partially furnished with a coating (2) that is substantially tack free at room temperature, and the coating (2) including at least one radiation-crosslinkable component.