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 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: 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: 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 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 security paper comprising a fibrous substrate comprising a watermark having repeating motifs, and a security structure that does not completely cover the watermark and has at least one semi-reflective area which is superposed at least partly on the watermark; which paper on the one hand allows observation, through the semi-reflective area, at least partially, of one of the motifs, and on the other hand allows observation at least partially of another of said motifs in a region of the watermark that is not covered by the security structure.

Abstract: The invention concerns a sheet material, characterized in that it incorporates at least one knitted structure. The invention also concerns a document and a base fabric comprising said sheet material, as well as a method for making said material. The invention further concerns a knitted structure comprising at least one authenticating and/or identifying element, as well as a method for authenticating and/or identifying a document or a knitted structure.

Abstract: A process for manufacturing a sheet material comprising at least two fibrous plies juxtaposed one on top of the other, including the following steps: a first paper ply is produced by filtration of an aqueous suspension of fibers on the wire cloth of a cylinder mold or of a former; a second paper ply is produced on the wire cloth of a second cylinder mold so as to form at least one recess in the second ply; at least one at least partially transparent element is placed between the two plies that are still wet; and the two plies are joined together so that said at least one recess of the second ply, the at least one at least partially transparent element and the at least one elongate region of zero thickness of the first ply are situated facing one another; then drying the obtained structure.

Abstract: The present invention relates to a security element (1; 30) intended for being added to or on a security document (21; 31), including at least one first optical structure (2) such as a standard rainbow hologram and/or a raster image representing a first pattern (22) and at least one second optical structure (3), which is achromatic and represents a second pattern (23) at least partially identical to the first pattern (21).

Abstract: The invention relates to a security element (1) which comprises a substrate (6) bearing at least the following elements on at least one of the faces thereof, namely: an optical structure (4) producing at least one image of at least one pattern (5) and/or producing image points of a light source illuminating the optical structure; and an adhesive (14), in particular a heat-sealable varnish, covering at least part of the aforementioned face of the substrate (6) without fully covering the optical structure (4).

Abstract: The present invention relates to secure paper (1), characterized by the fact that it comprises: at least one fiber layer (2); and at least one electronic chip (3) integrated in the fiber layer (2), said chip (3) including a memory (10) in which at least a first key is stored for use in authenticating the secure paper; the chip being configured to spoil, and in particular to delete, the first key in the event of an attempt at forced access to the chip, so as to make it impossible subsequently to authenticate the secure paper (1).

Abstract: The present invention provides a method of making a structure for making a security document and/or a document of value, or for making an article secure, the structure comprising at least one electronic device and at least one at least partially fibrous layer having a window arranged to receive the electronic device, at least in part, the method comprising the following steps: placing at least part of the electronic device in the window in the layer; and then depositing a resin in the window so as to encapsulate the electronic device, at least in part.

Abstract: The present invention concerns a security structure intended to be at least partially incorporated into or affixed to an article, particularly a security document and/or a valuable document, the structure comprising a substrate, at least one electronic device carried by the substrate, at least one non-electronic security and/or decorative element visible to the naked eye, carried by the substrate, covering only a portion of one side of the substrate and having no effect on the operation of the electronic device, and/or at least one amplifying antenna coupled with the electronic device and carried by the substrate, electronic device being at least partially visible so as to form with the security and/or decorative element a design chosen from among a geometric shape, particularly an ellipse, circle or polygon, a written symbol, particularly an alphanumeric character, and an image of a recognizable object, particularly a logo, a plant, an animal or a person.

Abstract: The present invention relates to a radiofrequency device (1) comprising: at least one sheet (2) of a substrate, and at least one wire booster aerial (3), formed with an electrically insulated conductor wire, comprising at least one turn, and having two ends connected to each other electrically in a connection zone (10).

Abstract: A security paper comprising a fibrous substrate comprising a watermark having repeating motifs, and a security structure that does not completely cover the watermark and has at least one semi-reflective area which is superposed at least partly on the watermark; which paper on the one hand allows observation, through the semi-reflective area, at least partially, of one of the motifs, and on the other hand allows observation at least partially of another of said motifs in a region of the watermark that is not covered by the security structure.

Abstract: An optical disk is provided that includes a face carrying information that is readable by a laser while the disk is being driven in rotation, the face being defined by a flexible structure; a support stiffening the flexible structure and including at least one fiber layer having a thickness; and an identification and/or authentication element carried by the support, the identification and/or authentication element being configured to emit a detectable signal on being illuminated by the laser that is used for reading the information present on the face, the identification and/or authentication element being inside and/or outside the support.

Abstract: The invention relates to a flat security element, having a front side and a reverse side, and being relatively small in size, such as planchettes, including, at least on one of its sides, at least one in-register authentication pattern and/or an authentication pattern resulting from the combination and/or superposition of a pattern on its front side and of a pattern on its reverse side, at least one of said authentication patterns being at least partly observable in transmitted light. It also relates to the manufacturing process thereof and to the security sheets and documents containing them.

Abstract: The invention concerns a security document comprising, as security element against recto/verso copying, indicia present on both sides and capable of being viewed under reflected lighting and forming an image capable of being viewed under transmitted light. The invention is characterized in that said indicia comprise lines and form said image with 3D effect.