B05D 3/06 - Traitement préalable des surfaces sur lesquelles des liquides ou d'autres matériaux fluides doivent être appliquésTraitement ultérieur des revêtements appliqués, p. ex. traitement intermédiaire d'un revêtement déjà appliqué, pour préparer les applications ultérieures de liquides ou d'autres matériaux fluides par exposition à des rayonnements
B41F 11/02 - Presses ou machines rotatives dont les cylindres de clichés portent plusieurs surfaces d'impression ou pour la mise en œuvre de procédés typographiques, lithographiques ou d'impression en creux, sélectivement ou en combinaison pour les papiers-valeurs
B41F 23/04 - Dispositifs pour traiter la surface des feuilles, bandes ou autres objets en relation avec l'impression par séchage à chaud, refroidissement ou application de poudres
The invention relates to an optical structure (5) having a relief effect, comprising: - a support (7) adapted for aligning liquid crystals, - a deposit (9) in contact with the support of a substance in the form of at least one pattern (11), which partially covers the support, and - a liquid crystal layer (13) which at least partially covers the support and said pattern and is in contact with the support.
ASSEMBLY CONSISTING OF A TWO-DIMENSIONAL NETWORK OF MICRO-OPTICAL DEVICES AND A NETWORK OF MICRO-IMAGES, METHOD FOR MANUFACTURING SAME, AND SECURITY DOCUMENT COMPRISING SAME
The present invention particularly relates to an assembly (E) consisting of: a two-dimensional network of micro-optical devices such as microlenses; and a network of micro-images consisting, at most, of as many micro-images (ML) as micro-optical devices, each micro-image being subdivided into N image elements arranged in such a way as to reconstitute, for an observer and through the two-dimensional network of micro-optical devices, N images visible from N different points of view, i.e. N rendering angles, each of these N images representing a reference or recording point of view of a given relief scene consisting of at least one mobile object, characterised by the fact that the image elements constituting a given object within the N images are distributed within the network of micro-images in such a way that they appear, depending on the rendering angle, through different micro-optical devices, describing the trajectory of the projection of the object on the plane of the two-dimensional network of micro-optical devices relative to the reference point of view.
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) (France)
ECOLE CENTRALE DE MARSEILLE (France)
OBERTHUR FIDUCIAIRE SAS (France)
Inventeur(s)
Lumeau, Julien
Lemarchand, Fabien
Moreau, Antonin
Begou, Thomas
Gillot, Julien
Borde, Xavier
Abrégé
The present invention particularly relates to a method for physical vacuum deposition of a coating (R) comprising at least one material (M) on at least a portion of a front face (10) of a support (1), said at least one material (M) originating from an evaporation source or an atomisation source (2), wherein: - use is made of a support (1), at least a portion of the front face (10) of which is smooth, that is to say, does not have any roughness and/or reliefs and/or recesses; - said vacuum deposition is carried out while varying the thickness distribution of the material (M) on said front face (10), that is, while progressively varying the thickness deposited, from a central region (11) in the direction of at least one lateral region (12) contiguous to the central region (11), without modifying the position of the evaporation source or atomisation source (2) of the material particles (M).
B42D 25/00 - Cartes ou structures de type feuille portant des informations caractérisées par leurs éléments d’identification ou de sécuritéLeur fabrication
C23C 14/04 - Revêtement de parties déterminées de la surface, p. ex. au moyen de masques
C23C 14/22 - Revêtement par évaporation sous vide, pulvérisation cathodique ou implantation d'ions du matériau composant le revêtement caractérisé par le procédé de revêtement
C23C 14/54 - Commande ou régulation du processus de revêtement
C23C 28/00 - Revêtement pour obtenir au moins deux couches superposées, soit par des procédés non prévus dans un seul des groupes principaux , soit par des combinaisons de procédés prévus dans les sous-classes et
6.
SECURITY ELEMENT FOR A VALUABLE DOCUMENT, METHOD FOR PRODUCING SAME AND VALUABLE DOCUMENT THAT COMPRISES IT
The present invention relates in particular to a security element (1) for a valuable document, which comprises an array (R) of at least two contiguous or adjacent lines (2, 2', 2"), at least one of these lines (2) being raised and having two opposing and at least partially inclined sides (20, 21) that each originate along one of the longitudinal and opposing edges (200, 210) of the line (2), characterised by the fact that the two opposing inclined flanks (20, 21) meet at a single, uninterrupted, sinuous junction area (22), that extends in the longitudinal direction of the line (2), the sides (20, 21) having no discontinuities or interruptions at least in the longitudinal direction.
The invention relates particularly to an assembly (E) consisting of a complex transparency device, i.e. a refractive and/or diffractive device acting on the light phase, and at least one array of micro-images, in which: said complex transparency device consists of a periodical two-dimensional array (RPU) formed from individual "pupils" (PU) in which each pupil (PU) comprises a micro-optical device (1), at least some of said micro-optical devices (1) having a non-centred optical axis (10), and at least some of said micro-optical devices (1) being positioned non-periodically, i.e. with variable off-setting of the optical axis thereof within said array (RPU); said array (2) of micro-images consists of as many micro-images as micro-optical devices (1); each micro-image (2) has a contour identical to that of the associated pupil (PU) and a surface which is at the most identical to that of the associated pupil (PU); and each micro-image (2) is sub-divided into at least one thumbnail image (20) such that when said transparency device is positioned facing said array of micro-images (2), and an observer observes said array through said transparency device, the observer sees, at least in a given direction of observation, an image (S) which is reconstructed by the combination of the thumbnail images associated with said direction, characterised by the fact that within the same sub-division, certain thumbnail images (20), i.e. only some thereof, which form a "first group", are distributed such that when said transparency device is positioned facing said array of micro-images (2), said thumbnail images (20) are respectively arranged according to the optical axis of said associated micro-optical device (1).
The invention relates particularly to a security element comprising a support (1) on which there is at least one print (2; 2'; 2"; 3), including a first print (2) which is invisible to visible light but revealed under a first wavelength range (?1) outside the visible light spectrum, and a second print (3) which is invisible to visible light but revealed under a second wavelength range (?2) outside the visible light spectrum, said first and second prints (2, 3) extending in regions which partially cover each other, thereby forming at least one covering region (4), characterised in that it comprises hidden information (IC) formed by said at least one covering region (4), hidden information (IC) revealed under a stroboscopic lighting that alternates lighting under two wavelength ranges corresponding respectively to said first and second wavelength ranges (?1 and ?2).
The invention relates to a process for the surface treatment of a security document which comprises, at least on one of its opposite faces, at least one security printing consisting of at least one pattern, this face and this at least one associated printing being covered with a transparent protective coating, in which a varnish comprising crystalline nanocellulose in a portion of 0.5% to 10% by weight of the varnish is put in place via the printing or coating technique on said at least one face, and in which said varnish layer is dried.
The present invention concerns a method for checking the authenticity of a security document, in particularly a fiduciary document, which comprises an area with, within or at the surface of this area, a reversible mecanoluminescent compound of formula (i): In which R represents an alkyl chain comprising 1 to 12 carbon atoms, which comprises a step in which said area is subjected to ultraviolet radiation such that the whole of said area is visible to the naked eye in a first fluorescent colour (C1), characterised by the fact that it also comprises a step that consists of heating at least said area to a temperature of at least 50° C, without subjecting it to any friction or mechanical stress whatsoever, the revealing of the authenticity of said document being confirmed by the shift from said first colour (C1) to a second fluorescent colour (C2) different from the first.
G07D 7/12 - Lumière visible, rayonnement infrarouge ou ultraviolet
G07D 7/15 - Vérification spécialement adaptée à la détermination de l’identité ou de l’authenticité de papiers de valeur ou pour discriminer ceux qui sont inacceptables, p. ex. qui ne correspondent pas à une monnaie en utilisant des moyens de chauffage
11.
COMPOSITION FOR FIDUCIARY USE AND SECURITY DOCUMENT USING SAME
The invention concerns a composition for fiduciary use. It is remarkable in that it comprises a printing matrix that is liquid or pasty before drying, preferably colourless, and a reversible mecanoluminescent compound having the following chemical formula A: Formula (A), in which: - Ar represents a monosubstituted polycyclic aromatic hydrocarbon resulting from the single or multiple fusion of n benzene rings, n being between 4 and 10, - n1 is between 0 and 10, n2 is between 0 and 10, - n1 and n2 not being simultaneously equal to 0, - Y is an organic or heteroorganic group, chosen in particular from the cyano, trifluoromethyl, formyl, ester, nitro, halogen, sulfoxide, sulfonyl, tricyanoethenyl, ammonium and phosphonium groups.
The present invention relates to a method for treating the surface of a banknote (1) comprising, on at least one of its opposing surfaces (20, 21), at least a printed item comprised of at least a design (3), this surface (20, 21) and its associated printed item (3) being covered in a transparent protective coating (R), characterized by the fact that a coating is applied via printing, said coating containing a varnish and an organic chemical compound incorporating fluorine atoms in the form of at least a perfluoro-polyether (PFPE) group, on said surface (20, 21), and by the fact that it is dried.
B42D 15/00 - Cartes ou imprimés d'un format ou d'un type particulier non prévu ailleurs
D21H 19/16 - Couches sans pigments appliquées sous une forme autre que la solution aqueuse définie dans le groupe comprenant des composés réticulables ou polymérisables
D21H 19/20 - Couches sans pigments appliquées sous une forme autre que la solution aqueuse définie dans le groupe comprenant des composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone
D21H 19/24 - Couches sans pigments appliquées sous une forme autre que la solution aqueuse définie dans le groupe comprenant des composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone
The present invention relates in particular to a security strip (1) to be partially embedded into the structure of a security document (2) at least partially made of fibers, said strip being flush at the surface of the document in the form of a set of windows (F), and including a transparent or translucent support material which is coated on one so-called upper surface thereof with a coating that is visible by means of reflection, and which includes a longitudinal strip (3) which is at least partially free of said coating and which separates first and second thread-forming areas (4, 4') coated with said coating, characterized in that each of the thread-forming areas (4, 4') has two different optical renderings and/or patterns that are visible by means of reflection, respectively, and in that said thread-forming areas include negative patterns (M) referenced relative to one another, respectively, i.e. at least one pair of said referenced patterns always has the same spacing pitch along said areas.
The present invention relates, in particular, to a security element (12) for a value document (1), which consists of an initially planar substrate (G), including an array (14) of raised lines (16), each raised line (16) comprising a profile (F), said profile (F) comprising gradual variations in the shape thereof along a predetermined line (16) or from one line to the other, said array (16) being colored, characterized in that said colored network (16) consists of repeating contiguous strips (3) formed by adjacent or contiguous threads (120, 121, 122) of at least two different colors (B, R, Y), said strips (3) being overall oriented in the same direction as that of said lines (16) of said array (14).
The invention relates to a value document, which consists of a support sheet (1), at least one face (10) of which comprises, over at least part of its surface, a transparent or translucent protective layer (2), called "first layer", of matt visual appearance, this layer being partially covered with a second protective layer (3) also transparent or translucent, but of glossy visual appearance.
B44F 1/02 - Dessins ou peintures caractérisés par des effets de lumière particuliers ou inhabituels produits par la lumière réfléchie, p. ex. surfaces mates, surfaces brillantes
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 (I1); on the side of a 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 (I1) to be observed during a change in the direction of observing the security element (1) relative to the optical system, wherein the encoded images (I1) are observable from the side of the first surface and from the side of the second surface of the substrate (2).
A translucent area (Z2) is formed in the element (14) by applying a substance (24) that transparentizes its substrate (12). Thus, the method includes a step of applying a substance (20) that impermeabilizes the substrate (12) over a first area (Z1) on a first side (F1) of the substrate, surrounding a second area (Z2) devoid of the impermeabilizing substance (20). The impermeabilizing substance (20) prevents impregnation of the substrate (12) by the transparentizing substance (24) in the first area (Z1). The method then includes a step of applying the transparentizing substance (24) to at least the second area (Z2) so as to impregnate the substrate (12) in order to make it translucent in this area (Z2). The first (Z1) and second (Z2) areas form first (18) and second (22) patterns respectively, making up an image that can be observed from both sides (F1, F2) of the substrate (12).
B44F 5/00 - Dessins caractérisés par des zones irrégulières, p. ex. des marbrures
D21H 21/26 - Agents rendant le papier transparent ou translucide
D21H 21/40 - Agents facilitant un test d'authenticité ou empêchant une modification frauduleuse, p. ex. pour papier de sûreté
D21H 21/44 - Éléments de sécurité latents, c.-à-d. pouvant être détectés ou devenant apparents uniquement par utilisation de méthodes ou de dispositifs particuliers de vérification ou d'altération
D21H 21/46 - Éléments adaptés à une vérification chimique ou empêchant une altération chimique, p. ex. par utilisation d'agents effaceurs
D21H 21/48 - Éléments adaptés à une vérification physique, p. ex. par irradiation
The invention relates to an element (12) that includes an array (14) of raised lines (16), each line (16) including at least one flank (18A, 18B), each of which define an inclination angle (.alpha.1) relative to a direction normal (Z) to the array (14). More precisely, the inclination angle (.alpha.1) of the flank (18A, 18B) of at least one line (16) of the array (14) gradually changes along said line (16) so as to form, in terms of light reflection, a degraded optical effect that changes based on the observation angle of the security element.
The present invention relates to a sheet (1) having a coextruded substrate (2) made from at least one polymer material, comprising a core layer (10) and at least one skin layer (11; 12), the core layer (10) containing voids (14), the sheet having been printed (20) by gravure printing.
B29C 55/00 - Façonnage par étirage, p. ex. étirage à travers une matriceAppareils à cet effet
B32B 27/20 - Produits stratifiés composés essentiellement de résine synthétique caractérisée par l'emploi d'additifs particuliers utilisant des charges, des pigments, des agents thixotropiques
21.
SECURITY FILM COMPRISING AN IRIDESCENT SECURITY MARK
The invention relates to a security film (1) comprising a security mark (2) that can be observed on the surface of the film (1) and has at least one area (2a, 2b) having an iridescent effect. Said area is coloured under normal observation with the naked eye and has quasi-colourless iridescent pigments under normal observation and an iridescent effect which is visible only under oblique observation.
brevets
