An exterior surface covering has a colored outer layer that transmits infrared radiation and an inner layer with a thermochromic pigment that absorbs heat at low temperature and reflects at high temperatures. The outer layer conceals the color change of the thermochromic pigment.

Provided are: a production method for a patterned phosphorescent body capable of producing a patterned phosphorescent body with excellent light emission (phosphorescent) performance through simple and easy production processes; a patterned phosphorescent body, and an evacuation guide sign. A mixture obtained by mixing at least a phosphorescent material and a glass material is filled in a mold and the mixture is press-molded so as to provide a planar part (10), thereby to create a molded body. The molded body is baked and slowly cooled, and then transfer paper of a water transfer type is attached to a surface of the planar part (10) of the baked molded body (4) and re-baking is performed at a temperature lower than a baking temperature of the molded body to impress a pattern (11) on the transfer paper.

Techniques are described to embed graphical identifiers into a ghost image within a layer of laminate of an identification document. The ghost image includes optically variable media that has a first appearance when viewed from a front of the identification document in reflected light at a first angle and a second, different appearance when viewed from the front of the identification document in reflected light in a second, different angle. During the ghost image generation process, a graphical identifier can be placed on a baseline ghost image to generate an adjusted ghost image. Once the adjusted ghost image is printed onto the identification document, the graphical identifier can be viewable based on the appearance of the adjusted ghost identifier in relation to the reflected light.

Techniques are described to embed graphical identifiers into a ghost image within a layer of laminate of an identification document. The ghost image includes optically variable media that has a first appearance when viewed from a front of the identification document in reflected light at a first angle and a second, different appearance when viewed from the front of the identification document in reflected light in a second, different angle. During the ghost image generation process, a graphical identifier can be placed on a baseline ghost image to generate an adjusted ghost image. Once the adjusted ghost image is printed onto the identification document, the graphical identifier can be viewable based on the appearance of the adjusted ghost identifier in relation to the reflected light.

The present abstract relates to a patent of invention for a visual message transmission device (1), pertaining to the field of application of the phenomenon of phosphorescence and to the field of self-adhesive articles, and it was designed in order to display messages such as promotional or ludic or decorative or technical ones or information signs, in the shape of the silhouette of any objects and/or texts; such device comprises: a light source (10), a transparent surface (20) traversed by light (11) generated by the light source (10), and by a layer (30) of phosphorescent and light-permeable pigment, applied to the transparent layer (20) that, when the light source (10) is on, is activated and traversed by the light (11) generated by the source, and when the light source (10) is off, the layer (30) emits phosphorescent light (12); such device having its preferential construction comprised of the phosphorescent layer (30) and for self-adhesive transparent article (40) on which the layer (30) is printed on and that is adhered to the transparent layer (20).

A method of visualizing a latent image includes: preparing a latent image composed of a plurality of paramagnetic seeds immobilized on a base in the form of an image, and a dispersion liquid of paramagnetic colloidal particles; immersing the latent image in the dispersion liquid of paramagnetic colloidal particles; and applying a magnetic field to the latent image and the dispersion liquid of paramagnetic colloidal particles.

A method of visualizing a latent image includes: preparing a latent image composed of a plurality of paramagnetic seeds immobilized on a base in the form of an image, and a dispersion liquid of paramagnetic colloidal particles; immersing the latent image in the dispersion liquid of paramagnetic colloidal particles; and applying a magnetic field to the latent image and the dispersion liquid of paramagnetic colloidal particles.

A method for the production of a multilayer body, in particular a security element, includes: a) producing a metal layer on a substrate; b) partial demetalization of the metal layer to form a first item of optical information in a first area of the multilayer body; c) applying a partial lacquer layer in a second area of the multilayer body to form a second item of optical information, wherein the partial lacquer layer extends at least partially beyond the metal layer; d) structuring the partial metal layer in the second area using the partial lacquer layer as mask.

A method for the production of a multilayer body, in particular a security element, includes: a) producing a metal layer on a substrate; b) partial demetalization of the metal layer to form a first item of optical information in a first area of the multilayer body; c) applying a partial lacquer layer in a second area of the multilayer body to form a second item of optical information, wherein the partial lacquer layer extends at least partially beyond the metal layer; d) structuring the partial metal layer in the second area using the partial lacquer layer as mask.

A display includes one or more first relief structures. Each of the one or more first relief structures consists of a smooth first reflection surface and a plurality of protrusions or recesses, each top surface of the protrusions or each bottom of the recesses is a smooth second reflection surface parallel to the first reflection surface, each of the one or more first relief structures is configured to display a color as a structural color by emitting a plurality of wavelength components of visible light wavelengths in the same direction, and each of the second reflection surfaces has a height or depth relative to the first reflection surface in a range of 0.1 to 0.5 m.