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: An optical structure comprising first and second opposite outside faces, at least a first interface comprising a first screen of microreliefs and arranged in such a manner that travel through the first interface from the first outside face towards the second outside face, passes from a first medium having a first refractive index to a second medium having a second refractive index that is greater than the first, and at least one second interface comprising a second screen of microreliefs and arranged in such a manner that travel through the second interface from the first outside face towards the second outside face, passes from a third medium having a third refractive index to a fourth medium having a fourth refractive index less than the third.

Abstract: A security structure including: a first region that is at least partially reflective and of low opacity; a second region that is at least partially reflective and of higher opacity than the first region; and a layer of a coating presenting birefringence properties, covering the first and second regions, at least in part.

Abstract: The invention relates to a flat insert intended for being inserted in a security document, which includes a fibrous substrate (2) formed as a single layer having a cavity (5) and an electronic device (3) having contactless communication, housed in said cavity. Said cavity is in communication with a single surface of the fibrous substrate (2) and includes, in the cross-section thereof, a peripheral shoulder (13) for housing said electronic device in said cavity without generating a thickened portion of the insert, said fibrous substrate (2) including synthetic fibres.

Abstract: The present invention relates to a security film comprising a fibrous substrate incorporated at least partially in which is a security strip that comprises at least one security element and that extends between two edges of said fibrous substrate, said security strip being made of paper and comprising an adhesive.

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 method for producing a support (100) containing at least one electronic device (50), said support comprising at least one fibrous layer (10) of paper or non-woven material including at least 15% mass of synthetic fibres. Said method comprises a step of introducing the electronic device (50), by means of a grip-release tool, at a site on said fibrous layer (10), that does not contain a cavity, by compressing said fibrous layer (10) such that, once the electronic device (50) has been introduced, it is received in the support (100) without generating any increased thickness.

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 invention relates to a security document including a fiber inner layer including at least one security element, a recto outer layer and a verso outer layer, the two outer layers being made of a transparent thermoplastic material, and an RFID device, the RFID device being housed within at least one inner layer of transparent or translucent material. The invention also provides a method of fabricating the security document.

Abstract: The invention relates to a method for producing a support comprising at least one electronic device (6), according to which the electronic device (6) is introduced, by means of a grip-release tool, into a first layer (2) of the support, made from at least one polymer material.

Abstract: The invention relates to a security element (1) which, prior to the incorporation thereof into an object, particularly a security document, comprises a substrate (6) bearing at least: an optical structure (4) producing at least one image of at least one comparison pattern and/or producing image points of a light source illuminating the optical structure; and a reference pattern (3), in which the optical structure (4) and the reference pattern (3) are borne by the substrate (6) in order to allow the simultaneous observation of an image provided by the optical structure (4) and of the reference pattern (3).

Abstract: A method of reading at least one bar code carried by a substrate, the method including: a) generating, especially in an automatic manner, when presenting the bar code to a system for reading the bar code, at least one authentication cue related to an intrinsic physical characteristic of the substrate and independent of the data contained in the bar code, and b) allowing the reading of the bar code, only in the event of a positive authentication of the substrate or reading the bar code regardless of the result of the authentication of the substrate and in the event of negative authentication of the substrate, preventing access to just one part of the data contained in the bar code and/or to any data that may be associated with the bar code, and which is stored on a separate data medium from the substrate.

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 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 (II), 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 a security article, in particular a security document, comprising a security element (1) that comprises an optical system, comprising: a transparent or translucent substrate (2); on the side of a first surface (2a, 2b) of the substrate (2), a combined image comprising a plurality of encoded interleaved images (II); on the side of second surface (2a, 2b) of the substrate (2), opposite the first, an exposing screen (4) placed on top of the combined image, which enables the encoded images (Ii) to be observed during a change in the direction of observing the security element (1) relative to the optical system, wherein the encoded images (II) are observable from the side of the first surface and from the side of the second surface of the substrate (2).

Abstract: The present invention relates to a sheet material 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 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 an information medium to be handled by a large number of users, such as a banknote, and having antiviral properties, and to a method for making same.