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: 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: 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 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 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: Security element comprising: an adhesive, a reflecting optical structure comprising at least one elementary reflecting optical structure having a non-plane reflecting surface giving an image of a pattern in at least one direction of observation of the security element, or comprising at least two elementary reflecting optical structures (9a, 9b) of different types, in particular at least one of which is designed to create a luminous dot which is the image of a luminous source for observation of the security element.

Abstract: The invention relates to a method for securing a coloured 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: A security structure intended to be incorporated or fastened, at least partially, in or on an article, for example a security document and/or a document of value, includes at least one first fluorescent zone capable of emitting by fluorescence, under a predefined illumination condition, visible light of a first color; and at least one second fluorescent zone capable of emitting by fluorescence, under the predefined illumination condition, visible light of a second color that differs from the first, the first and second fluorescent zones being observable from the respective opposed faces of the structure.

Abstract: The present invention relates to a security document and/or document of value comprising: at least one information vector; and at least one masking element in the form of a strip having at least one semi-reflecting region covering the information vector at least in part, the masking element being of a width that is less than the width of the document.

Abstract: The present invention relates to printable security paper that includes a region capable of receiving printed indicia on the front side and on the reverse side which are observable in reflected light and form an image observable in transmitted light, as security element protecting against two-sided copying, characterized in that such region is a screened region having an average overall opacity less than the opacity of the vellum part of the rest of the paper, said screened region being made up from alternations of vellum miniregions, having an approximately constant thickness equal to that of the vellum part of the rest of the paper, and of miniregions of reduced opacity because of their smaller thickness compared with the vellum miniregions. The invention also relates to the security document obtained with this paper.

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 present invention concerns a flat safety element, comprising a support that contains, on at least one of its faces, a set of elementary characters, characterized in that said elementary characters are equipped with a variation in shape and/or density and/or size in such a manner as to ensure a detectable design is at least visible.

Abstract: A sheet including a fiber substrate including at least one watermark and having at least partially incorporated therein a ribbon that is narrower than the substrate and that overlies the watermark in part.

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: The invention relates to a security structure (3), for at least partial incorporation, or fixing in or on an article, for example, a security and/or value document, said structure comprising: at least one first fluorescent zone, which may emit a visible light of a first colour by fluorescence under given illumination conditions, at least one second fluorescent zone, which may emit a visible light of a second colour by fluorescence under given illumination conditions, different from the first, the first and second fluorescent zones being observable from opposing faces (19) of the structure.

Abstract: The present invention relates to a security document and/or document of value comprising: at least one information vector; and at least one masking element in the form of a strip having at least one semi-reflecting region covering the information vector at least in part, the masking element being of a width that is less than the width of the document.

Abstract: The present invention relates to printable security paper that includes a region capable of receiving printed indicia on the front side and on the reverse side which are observable in reflected light and form an image observable in transmitted light, as security element protecting against two-sided copying, characterized in that such region is a screened region having an average overall opacity less than the opacity of the vellum part of the rest of the paper, said screened region being made up from alternations of vellum miniregions, having an approximately constant thickness equal to that of the vellum part of the rest of the paper, and of miniregions of reduced opacity because of their smaller thickness compared with the vellum miniregions. The invention also relates to the security document obtained with this paper.

Abstract: Paper based on a fiber composition and having at least one multitone-effect watermark. When observed in transmitted light, the watermark has a set of pale zones arranged in the manner of a screened image.

Abstract: Security paper (1) has a security zone (2) for providing protection against mechanical falsification. The security zone comprises a set of cells (3) indented in the paper and optionally interconnected by indented link portions, the thickness of the paper being substantially uniform throughout its area that is complementary to the cells (3) and to the link portions in the security zone (2).