Abstract: The invention relates to a security device comprising a security element composed of: a carrier substrate (1) provided with at least one optically variable effects generating structure (2) situated in defined areas of the said carrier, a first reflective layer (3) visible at least where it coincides with the said optically variable effects generating structures (2) and comprising a reflection enhancing material, at least one second distinctive reflective layer (4) situated only outside the optically variable effects generating structures (2) and comprising a reflective material different from that of the first layer (3). These layers (3,4) can comprise further patterns (7). The invention relates to a security support (9) or document comprising the said security device too.

Abstract: The present invention relates to a sheet material (2) comprising at least one first layer defining an outer surface of the sheet material and having at least one first color, at least one second layer comprising at least one watermark (6) and having at least one second color, the first and second colors having at least different saturations and/or hue angles.

Abstract: The present invention relates to a security element (1), comprising: an optical system, comprising: a transparent or translucent substrate (2), on the side of a first surface (2a, 2b) of the substrate (2) is a combined image (I) comprising a plurality of encoded interleaved images (I1), a exposing screen (4) placed on top of the combined image, enabling the encoded images (I1) to be observed during a change in the direction of observing the security element (1) relative to the optical system, the exposing screen (4) being: located on the side of the first surface (2a, 2b), the combined image then being located between the exposing screen (4) and the substrate (2), in which case the security element (1) comprises, on the side of the second surface (2a, 2b), a reflective surface that enables the encoded images (I1) to be observed through exposing screen (4).

Abstract: The present invention relates to the field of paper and relates to a sheet including a high-definition high-contrast multitone watermark having areas of pronounced brightness. Such watermark is particularly obtained by means of a part (4) including a surface (5) having a raised area and perforations (6). The perforations (6) are such that making the cross-section thereof, at a given distance from the draining surface, directly depends on said distance. The present invention also relates to the method for manufacturing said part that is used for forming one such watermark, to the part itself, and to the use of said part when forming a watermark.

Abstract: A security element for integration into documents for authentication thereof. The security element comprises a substrate. A reflective optical structure and a reference pattern are disposed on the same side of the substrate. The reflective optical structure is made up of an array of Fresnel lenses. The reference pattern appears in the foreground when observed by an observer. A virtual image of the observer appears in the background behind the foreground pattern.

Abstract: The present application relates to a multilayer card comprising a fibrous outer layer. The fibrous outer layer comprises between about 55 wt % and about 80 wt % of natural fibers, and between about 3 wt % and about 10 wt % of synthetic fibers, and between about 9 wt % and about 20 wt % of inorganic fillers. The fibrous outer layer further comprises a binder and a softener. The binder may be a mixture of PVA and starch or a latex. The softener may be glycerin, urea, sodium nitrate, or mixtures thereof. The fibrous outer layer is printed upon and/or comprises a security element.

Abstract: A multilayer structure incorporating at least one security element. The multilayer structure includes a substrate made of a thermoplastic material with at least one non-opaque region. The multilayer structure further includes an external layer. An internal layer is disposed between the substrate and the external layer. The external and internal layers are made of a thermoplastic material. An opening in the internal layer defines a security region. An insert having a non-opaque security element is at least partially disposed within the security region. The security element and the non-opaque region of the substrate at least partially overlap.

Abstract: The invention relates to an information carrier intended to be handled relatively frequently, characterized in that it contains at least one biocidal agent. This information carrier is in particular intended for the production of a banknote, of a passport, of a playing card, of a packaging, of a book or of a magazine. The invention also relates to the process for producing said information carrier, characterized in that at least one biocidal agent is incorporated into a basic carrier made of cellulosic and/or plastic materials.

Abstract: A security element for integration into a document. The security element has a transparent substrate. An array of lenses is disposed on the first side of the substrate. A field of elementary patterns observable through the array of lenses is disposed on the second side of the substrate. A transparent lacquer partially covers the array of lenses. The lacquer takes the form of at least one macroscopic pattern, which locally cancels out the effect of the lenses, thereby allowing an observation of the field of underlying elementary patterns tin halftone. The macroscopic patterns are not spatially coordinated with the field of elementary patterns.

Abstract: The aim of the present invention is to provide a fluid composition that can form a coating, said composition being characterized in that it contains, at least in a solvent medium, an effective amount of at least one natural virucide selected from among lauric acid, monolaurin, lactoferrin and essential oils having antiviral activity and/or one of the precursors thereof, said composition having a viscosity of 30 mPa·s to 40 Pa·s at room temperature and pressure.

Abstract: A high-durability paper and method of manufacture thereof. The paper may be intended for manufacturing bank notes, offering good resistance to circulation, especially good resistance to pulverulent soiling in dry medium, to friction in wet medium and to soiling in wet medium, which is moreover appropriately capable of satisfying all the manufacturing constraints, especially the printing constraints. The high-durability paper includes a fibrous substrate, and a protective coat completely covering at least one face of the fibrous substrate, where the protect coat includes at least one base layer on the substrate side and a polyurethane-based outer printability layer that covers the base layer.

Abstract: An anti-counterfeiting security thread for incorporation into documents and banknotes. The security thread has at least two zones located respectively on either side of a separation line extending longitudinally along the thread. Two optically variable security elements having different appearances are disposed in the first zone and second zones of the security thread. The optically variable elements are arranged with respect to the separation line so that each of the two optically variable elements has a first perceived appearance from a first direction of observation and a second perceived appearance from a second direction of observation, wherein the first and the second perceived appearances are different.

Abstract: The invention relates to a security element comprising a carrier substrate comprising a transparent or translucent area carrying at least one digitised mark made of at least one set of dots appearing as a three dimensional mark when viewed in transmitted light. The invention relates to a security support or document or article comprising the said security element and to the method of identification and/or authentication of this security support or document or article.

Abstract: According to one aspect, the invention relates to a method for producing a watermark element (10) for forming a shadow watermark image in a substrate by means of dewatering of a fibrous suspension, wherein the watermark element (10) comprises a body with a relief side (12) having a relief (14) and a dewatering side (16) positioned opposite the relief side, perforations (18) being provided at least in the relief (14), a perforation (18) comprising a channel (20) with a channel inlet (21) at the relief side (12) and a channel outlet (22) at the dewatering side (16), which method includes the steps of forming perforations in a body in a mechanical manner and introducing a relief in the intended relief side, the perforations (18) being formed in such a way that the dewatering capacity, expressed as the open surface area of the channel inlet(s) per unit of surface area of the relief, is dependent on the height (h) of the channel inlet (21) with respect to the dewatering side (16), it being the case that the higher

Abstract: The invention relates to a coated sheet of security paper which includes security elements and has a high print rendition and a high resistance to circulation, which sheet is characterized in that at least one of its sides is coated with a transparent or translucent coating comprising at least one colloidal silica and at least one transparent or translucent elastomeric binder. In particular, the binder is a polyurethane. The invention also relates to the process for manufacturing the said sheet and to a banknote obtained from this sheet.

Abstract: The invention relates to a method for securing a colored or uncoloured translucent or opaque object (1), in which a sticker (2) is affixed to the back of the object (1), said sticker comprising: a substrate including a watermark or pseudo-watermark (4) which is sufficiently transparent to allow the object (1) to be seen through the watermark or pseudo-watermark (4); and a luminescent agent which is positioned at least partially over the watermark or pseudo-watermark (4) between the watermark or pseudo-watermark (4) and the object (1).

Abstract: The invention concerns a structure (1) comprising: a least one fibrous material substrate (2), optionally at least one surface layer deposited on one surface of the substrate, a plurality of heterogeneous elements (3) of the substrate and/or of the optional surface layer, dispersed randomly within the substrate and/or the optional surface layer, at least one authenticating and/or identifying information having a relationship with at least one spatial and/or physical feature of part at least of said heterogeneous elements.

Abstract: The present invention relates to the field of paper and relates to a sheet including a high-definition high-contrast multitone watermark having areas of pronounced brightness. Such watermark is particularly obtained by means of a part (4) including a surface (5) having a raised area and perforations (6). The perforations (6) are such that making the cross-section thereof, at a given distance from the draining surface, directly depends on said distance. The present invention also relates to the method for manufacturing said part that is used for forming one such watermark, to the part itself, and to the use of said part when forming a watermark.

Abstract: A method for authenticating and/or identifying a security article that includes a transparent or translucent substrate and, on a side of a first face of the substrate, a first image. The method includes superimposing at least partially the first image of the article with a second image. The second image may be produced by an electronic imager. The second image may be situated on the side of a second face of the substrate that is opposite to the first face. The method permits observation of an authentication and/or identification information item of the security article during a change of the angle of observation of the first and second superimposed images.

Abstract: The present invention relates to a security structure (10), comprising at least one first fluorescent composition (13) and at least one second phosphorescent composition (12), the first and second compositions being simultaneously excitable by a predefined illuminant from a single first surface (14) of the structure, the security structure (10) being provided in the form of a security thread, a security film, or a patch, wherein the first fluorescent composition is at least partially stacked on the second phosphorescent composition and/or the first and second compositions are used for the reference marking on the security structure.