Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/45—Associating two or more layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/351—Translucent or partly translucent parts, e.g. windows
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/23—Identity cards
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/24—Passports
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/25—Public transport tickets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/26—Entrance cards; Admission tickets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/27—Lots, e.g. lottery tickets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/29—Securities; Bank notes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/324—Reliefs
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/355—Security threads
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
  • B42D25/373—Metallic materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
  • B42D25/378—Special inks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
  • B42D25/378—Special inks
  • B42D25/382—Special inks absorbing or reflecting infrared light
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
  • B42D25/378—Special inks
  • B42D25/387—Special inks absorbing or reflecting ultraviolet light
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/405—Marking
  • B42D25/41—Marking using electromagnetic radiation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/405—Marking
  • B42D25/415—Marking using chemicals
  • B42D25/42—Marking using chemicals by photographic processes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/405—Marking
  • B42D25/43—Marking by removal of material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/405—Marking
  • B42D25/43—Marking by removal of material
  • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/405—Marking
  • B42D25/43—Marking by removal of material
  • B42D25/445—Marking by removal of material using chemical means, e.g. etching
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
  • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
  • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements
• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
  • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
  • G07D7/20—Testing patterns thereon
  • G07D7/202—Testing patterns thereon using pattern matching
  • G07D7/206—Matching template patterns
• • B42D2033/04—
• • B42D2033/10—
• • B42D2033/30—
• • B42D2035/16—
• • B42D2035/20—
• • B42D2035/50—

Definitions

• Security element having two distinct superposed patterns, security document comprising it and related methods
• the present invention relates to the field of security documents. It relates to a security element, a security document comprising it and the authentication and manufacturing methods associated with it. Background
• the security element or elements are preferably chosen so as to be easily recognizable by the man in the street and so that they are also difficult to counterfeit with the technologies available on the market.
• Document GB 173 767 and EP 0 279 526 are known, for example, from security documents making it possible to obtain in transvision a "moiré effect".
• a moiré effect makes it possible, for example, to display a pattern produced by the superposition of two security elements, for example by bringing lines of two security elements closer together, these being able to correspond to prints made respectively on the front and back of the card. back of the security document.
• FR 2 231 451 security documents having on one of their faces printed halftone patterns with preferential orientations frame or different print heights, to be observed at a given angle of observation to allow their authentication.
• Document WO 95/09731 and EP 1 886 827 also disclose security documents comprising dissociated and offset images, a part of an image being for example printed on the front of the document and the other part of the image being printed on the back of the document.
• the hidden image then appears by observing the security document in transvision or observation at a given angle.
• There are still security elements with a hidden image for example in an impression or a hologram, requiring the use of an external filter to be visible, or even the use of elements of dissociated printing on a security document requiring the reassembly of the elements by folding the document to allow to see a hidden image.
• WO 2006/066803 discloses a thick plastic card on the front and back of which are partially and respectively first and second metallizations whose visibility varies depending on the viewing angle of the front or back of the card .
• the application WO 2005/100040 describes a security document comprising on its front a metallic image and on its back a hologram.
• US 2004/233463 discloses a method of printing color images using transparent inks and metallic inks.
• the printing methods used do not make it possible to obtain the precision necessary to form parts separated from an image on either side of a security document.
• the technologies used are difficult to implement during the production of the security document because they may require the creation of specific elements on the document, for example observation windows or particular translucent zones, or require use of a separate external filter.
• the technologies of the prior art are not adapted to a security element with reduced dimensions, including a security thread, which has several constraints. SUMMARY There is therefore a need to overcome at least some of the disadvantages mentioned above.
• the invention aims to meet all or part of these needs.
• the invention thus has, according to one of its aspects, a security element comprising an at least partially transparent substrate, on the front and back of which respectively and first and second marks appear in the form of metallizations, respectively. and / or impressions, the first marks superimposed mainly on the second marks (or reciprocally), the first and second marks respectively forming first and second distinct patterns on their respective faces, the degree of visibility of the second marks varying with the angle of observation of the front of the security element.
• the first brands cover the major part, especially at least 50%, better 80%, better 90%, better 95%, better 100%, of the surface of the second brands or vice versa.
• the widths of the first marks can be twice the widths of the second marks, better 1.5 times, better 1.2 times, better equal, or vice versa.
• the covering, preferably total, of the marks between them can be observed according to a predefined angle of observation of the security element, in particular according to the norm on the front or on the back of the security element.
• the first marks can be superimposed substantially entirely on the second marks or vice versa.
• the first marks may in particular be superimposed exactly, that is to say totally, the second marks or vice versa.
• the first marks may in particular be superimposed exactly, that is to say totally, the second marks or vice versa.
• the marks on the side of the face of the security element observed by the user may be wider, in particular have a larger surface, than the marks on the face opposite the face observed.
• the widths of the first marks may thus be greater than or equal to the widths of the second marks.
• the observation at an inclined angle of the front of the security element may allow to see the second marks forming the second pattern.
• Observation at an inclined angle on the back of the security element may allow to see the first marks forming the first pattern.
• the superimposition of the first and second marks with each other must in particular be carried out in the most perfect manner possible in order to prevent the observation of the image resulting from the superposition of the first and second patterns during a vertical observation, and to allow the visibility of the image during an observation at an inclined angle.
• the degree of visibility of the second marks (or first marks) may change depending on the direction of observation of the front face (or back side) of the security element. For example, when the viewing angle increases from normal to the front (or back) of the security element, the visibility of the second marks (or first marks) may increase accordingly.
• the second marks may be visible only by observing the security element at an angle other than 90 ° with respect to the observed face of the security element. In this way, it is possible to guard against an attempt to counterfeit, particularly by photocopying.
• All or part of a first part of the second marks may be visible only by observation at a first angle and all or part of a second part of the second marks may be visible only by observation at a second angle different from the first angle. All or part of the first part of the second marks can also be visible by observation according to the second angle.
• the first and second marks may advantageously be located on either side of a transparent zone of the substrate.
• the substrate can be completely transparent.
• the substrate can be visible between the first and second marks.
• the parts of the front and back of the substrate not covered by the first and second marks may be covered either by any element or by a transparent element, for example a transparent varnish or a heat-sealing varnish.
• the first and / or second marks may be impressions and / or metallizations.
• the first and / or second marks may correspond to an alternation of impressions and metallizations.
• the first marks may be impressions and the second marks may be metallizations, or vice versa.
• the first and / or second marks may be prints, for example in the form of impressions selected from: inkjet, offset, laser, intaglio, gravure, screen printing, flexographic, or printing technologies known and allowing in particular to arrive at the required printing finesse.
• the first and / or second marks may also be metallizations made for example by application of one or more metal layers, and proceed to the demetallization by the appropriate technologies: application of a varnish resistant to chemical attack (commonly called "resist"). ") Then attack with a soda solution, sublimation of the metal using a laser or other known technologies.
• the metallizations may comprise aluminum, copper, gold, nickel, silver or other metal that can be deposited by evaporation under vacuum or by chemical deposition. Reference is made more particularly to application FR 1 577 660 with regard to the reduction of a metal salt solution.
• the first and second brands may be of the same nature and made in a similar way.
• the first and second marks may all be prints (or metallizations) of the same type, made by the same method.
• the first and second marks may have the same width and / or the same length.
• the first and / or second marks may be opaque or not. In particular, they can at least partially diffuse the light passing through them.
• the first and / or second marks may comprise goniochromatic pigments, iridescent, luminescent, fluorescent, phosphorescent, photochromic, thermochromic, piezochromic, transparent, among others.
• the appearance of the first and / or second marks may vary depending on the viewing angle.
• the appearance of the first marks may vary for a predefined angle of observation indicating at the same time that the second marks must be visible for this predefined angle.
• the observation of the security element can also be combined with another security element, present for example elsewhere on a security document comprising the security element according to the invention, this other security element being visible only for the viewing angle to see the image formed by combining the first and second patterns of the first and second marks.
• the observation of the security element can be done with the naked eye or not, under visible light, ultraviolet (UV) or infrared (IR).
• UV ultraviolet
• IR infrared
• the first and / or second marks may comprise, all or only some, at least two zones of different nature, in particular of different colors, making it possible to observe different effects on the image formed by the combination of the first and second patterns.
• the second marks may have on their left side an area of a first color and on their right side an area of a second color, different from the first color.
• the first and / or second marks may include a pattern in the form of a raster image.
• raster image must be given a broad meaning that covers all types of frames or pseudo-frames, with a juxtaposition of light areas and dark areas, distinguishable from each other, the shape of these light areas and these dark areas are not limited to a particular shape but can be any.
• the halftone image may for example comprise a set of points and / or parallel lines between them or not, the size and / or spacing between them are variable or constant, this set forming for example a juxtaposition of clear areas and dark, for example black and white.
• the raster points can thus for example be lines.
• the halftone image may in particular comprise a set of lines, preferably parallel to one another, of widths and spacings between them defined.
• the lines may have the same width and / or the same spacing between them.
• Each line may correspond to a mark. All or part of the lines may have a variable width.
• the halftone image may for example comprise a juxtaposition of dark and light lines, for example black and white.
• the raster image may comprise a set of elements of variable shape constituting the frame of the image, these elements being equidistant or not from each other. These elements may for example be points, for example in a circular, oval, star, polygonal, for example square, rectangular, triangular, among others.
• the first and second patterns may be formed by parallel lines with the same screen.
• the first and second patterns may be distinct in shape, size, number, including the repetition of several similar sub-patterns, among others.
• the security element may be a security thread.
• the security element can still be a patch or a foil.
• the width of the security element may be between 1 and 30 mm, preferably between 4 and 15 mm.
• the thickness of the substrate may be between 5 and 100 ⁇ m, preferably between 10 and 100 ⁇ m, better between 10 and 50 ⁇ m, better between 15 and 35 ⁇ m, more preferably between 15 and 30 ⁇ m.
• the thickness of the substrate may be strictly less than 100 ⁇ m, preferably less than 50 ⁇ m, better still 35 ⁇ m and more preferably less than 30 ⁇ m.
• the small thickness of the substrate can easily incorporate the security element in a security document, especially as described below.
• the small thickness of the substrate can make it possible to produce first and / or second marks of reduced dimensions, in particular in the form of micro-patterns made in the form of metallizations and / or prints. It is thus possible to make the first and / or second marks, for example in the form of a fine screen image, difficult to counterfeit.
• the substrate may comprise a polymer chosen from polyethylene (PE), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polycarbonate (PC), polyester carbonate (PEC), polyethylene terephthalate glycol (PETG) , acrylonitrile butadiene styrene (ABS).
• PE polyethylene
• PVC polyvinyl chloride
• PET polyethylene terephthalate
• PC polycarbonate
• PEC polyester carbonate
• PETG polyethylene terephthalate glycol
• ABS acrylonitrile butadiene styrene
• the substrate may comprise a waveguide-type light-collecting film.
• a waveguide-type light-collecting film for example, such films are marketed by Bayer under the name LISA ®.
• the substrate may comprise microreliefs on at least one of its faces.
• microreliefs can be used to create diffracting visual effects.
• the security element may comprise a so-called positive resin layer, capable of chemically modifying under the action of ultraviolet (UV) radiation and becoming soluble in a suitable solvent, this resin layer being disposed over at least one of the front and back of the substrate.
• UV ultraviolet
• the resin layer may be disposed between the substrate and the first marks and / or between the substrate and the second marks.
• the security element may also comprise at least one non-opaque colored layer, in particular a transparent colored layer, this colored layer being applied to at least one of the front and back of the substrate.
• the colored layer may for example comprise pigments chosen from iridescent, luminescent, fluorescent, phosphorescent, photochromic or thermochromic pigments.
• the colored layer may be located between the substrate and the first marks and / or between the substrate and the second marks.
• the colored layer may alternatively be located on the outer face of the first marks and / or on the outer face of the second marks.
• the presence of one or more colored layers can thus make it possible to provide particular visual effects when observing the image resulting from the combination of the first and second patterns.
• at least one of the first and second patterns may appear colored during the observation.
• the invention further relates, in another aspect, to a security document comprising a security element as defined above.
• the security element may be a security wire introduced in bulk or window (s) in the security document, or may still be applied on the surface of the security document.
• the security document may in particular be chosen from among a means of payment, such as a banknote, a check or a restaurant ticket, an identity document, such as an identity card or a visa or passport, or a driving license, a lottery ticket, a ticket or a ticket for cultural or sporting events.
• a means of payment such as a banknote, a check or a restaurant ticket
• an identity document such as an identity card or a visa or passport, or a driving license
• a lottery ticket such as a ticket or a ticket for cultural or sporting events.
• the security document may also be an article selected from a security tag, a package, including a packaging for drugs or for food or for cosmetics or perfumes or for electronic parts or for spare parts.
• the invention further relates, in another of its aspects, to a method of authenticating a security element or a security document as defined above, in which:
• the front and / or back of the security element are observed at a non-zero observation angle with respect to the normal to the front and / or back of the security element (observation in the vertical direction), it is concluded that the security element or the security document is authenticated with the appearance of the image formed by the second pattern.
• the angle of observation of the complete hidden image may be between 20 ° to 70 ° and preferably equal to 45 °.
• Those skilled in the art may indeed determine said angle, in particular as a function of the thickness of the substrate of said security element, the thickness of the impressions and / or metallizations of said security element and the dimensions of said first and second marks.
• Observation can be done at the transparent substrate areas not covered by the first and second marks.
• the observation of the front of the substrate can make it possible to see the second pattern formed by the second marks.
• the observation of the back of the substrate can make it possible to see the first pattern formed by the first marks.
• the subject of the invention is also a method of manufacturing a security element as defined above, in which part of the front and back of an at least partially transparent substrate is partially formed.
• first and second marks in the form of metallizations and / or impressions, so that the first marks are mostly superimposed on the second marks and that the first and second marks respectively form first and second distinct patterns according to their faces; respectively.
• the method may further comprise the steps in which:
• a first demetallization of a metal layer present on the front of the substrate is carried out to form the first marks
• the first demetallization of the metal layer present on the front of the substrate can be done by an optical process by illuminating the front of the substrate.
• the optical process may correspond to a laser illumination which can simultaneously form by sublimation metallized portions the first and second marks.
• the first and second marks can thus be formed exactly at the reference point of each other. They can be exactly superimposed on each other.
• Said other demetallization of the first and / or second marks making it possible to form the first and second distinct patterns can be carried out by placing a mask (or cover) on the first and / or second marks to at least partially mask them, then submitting the marks not masked by the mask to a chemical treatment, especially of the soda type, so as to form the first and / or second patterns.
• the first demetallization of the metal layer present on the front of the substrate can still be done by an optical process by illuminating the front of the substrate and / or by chemical treatment.
• the chemical treatment may correspond to a chemical attack of unmasked parts of the first marks.
• the replica of the first marks on the back of the substrate can in particular be done by an optical process by illuminating the front of the substrate.
• the process may correspond to an ultraviolet (UV) illumination of the recto face of the substrate allowing insolation of a resin layer, especially a so-called positive resin capable of modifying chemically under the action of UV radiation, located between the back of the substrate and a metal layer to form the second marks.
• UV ultraviolet
• the subject of the invention is a security element comprising an at least partially transparent substrate, on the front and the back of which first and second marks respectively appear in the form of metallizations and / or impressions, the first marks superimposed mainly on the second marks, the first and second marks respectively forming first and second distinct patterns according to their respective faces, the degree of visibility of the second marks varying with the angle of observation of the recto of the security element, the first and / or second marks having a pattern in the form of a halftone image having a set of lines parallel to each other.
• the subject of the invention is a security element comprising an at least partially transparent substrate, on the front and the back of which first and second marks respectively appear in the form of metallizations and or impressions, the first marks superimposed mainly on the second marks, the first and second marks forming respective first and second distinct patterns according to their respective faces, the degree of visibility of the second marks varying with the observation angle of the front of the security element, the first and second patterns being formed by parallel lines with the same screen ruling.
• the subject of the invention is also a security element comprising an at least partially transparent substrate, on the front and the back of which first and second marks respectively appear in the form of impressions respectively. , the first marks superimposed mainly on the second marks, the first and second marks respectively forming first and second distinct patterns according to their respective faces, the degree of visibility of the second marks varying with the angle of observation of the front of the element of security.
• the subject of the invention is a security element comprising an at least partially transparent substrate, on the front and the back of which first and second marks respectively appear in the form of metallizations and / or impressions, the first marks superimposed mainly on the second marks, the first and second marks respectively forming first and second distinct patterns according to their respective faces, the degree of visibility of the second marks varying with the angle of observation of the recto of the security element, the second marks and / or the first marks being formed by at least two sets consisting of different impressions, in particular of different colors, and / or different metallizations.
• Said at least two sets forming the second marks and / or the first marks may be juxtaposed or spaced apart.
• Said at least two sets may be partly juxtaposed and partly spaced apart.
• Said at least two sets may be of different width and / or height.
• a first set of first impressions and / or metallizations may, for example, only be visible when the front of the security element is observed on one side of a separation plane forming a non-zero angle with the recto of the security element, and a second set consisting of second impressions and / or metallizations may for example be visible only when the front of the the security element on the other side of the separation plane.
• the separation plan may correspond to the median plane of the front of the security element.
• FIG. 1 represents, in section, an example of a security element according to the invention
• FIG. 2 represents, in front view, the front of the security element of FIG. 1
• FIG. 3 represents, in front view, the backside of the security element of FIG. 1;
• FIG. 4 represents, in front view, the image resulting from the combination of the first and second patterns of the security element of FIG. 1 during an observation at an inclined angle;
• FIG. section an alternative embodiment of a security element according to the invention,
• FIGS. 6 and 7 represent, in section, steps of the method of manufacturing a security element according to the invention
• FIG. 8 to 11 show, in section, other steps of a method of manufacturing a security element according to the invention
• FIGS. 14 and 15 show, in front view, two examples of photographs of the observation of a security element according to the invention
• FIG. 16 represents, in section, another example of a security element.
• security according to the invention comprising first and second marks respectively visible at different first and second angles.
• FIG. 1 shows, in section, an exemplary security element 1 according to the invention.
• the security element 1 comprises a substrate 2 at least partially transparent, preferably completely transparent, on the front 7 and the back 8 of which are respectively first marks 3 and second marks 4.
• the marks 3 and 4 are distributed on the front 7 and the back 8 of the substrate 2 partially.
• Marks 3 and 4 may be in the form of metallizations and / or prints, made in a manner as described above.
• the first marks 3 and the second marks 4 are respectively arranged on the front 7 and the back 8 of the substrate 2 so that they are totally superimposed on each other. In this way, when we observe the security element 1 in the vertical, that is to say at a non-zero observation angle with respect to the normal front 7 or 8 back of the element 1, only the first marks 3 can be observed during an observation of the front 7 or the second marks 4 in an observation of the back 8.
• the first marks 3 form a first distinct pattern 5 of a second pattern 6 formed by the second marks 4.
• the first and second patterns 5 and 6 may differ from one of the ways described above.
• FIG. 2 shows, in front view, the front 7 of the security element 1.
• FIG. 2 represents the observation of the front side 7 according to a vertical observation, so that it can only be seen that the first brands 3.
• the first marks 3 form a first pattern 5 in the form of a raster image comprising parallel lines of equal and equidistant thickness.
• FIG. 3 shows, in front view, the backside 8 of the security element 1.
• FIG. 3 represents a vertical observation of the backside 8 so that the second marks 4 can be seen. , as well as, through said substrate of said security element, the first marks 3.
• the second marks 4 form a second pattern 6 which corresponds to a raster image comprising blocks of variable sizes distributed differently on the back 8 of the substrate 2.
• FIG. 4 shows the appearance of the security element 1 when viewed at an inclined angle making it possible to see the image resulting from the
• the observation is carried out at an angle inclined at 45 degrees with respect to the normal of the front side 7 of the substrate 2, the angle being measured in the clockwise direction of a shows.
• the observation could be performed at a different angle, in particular greater than or equal to 45 degrees, measured for example in the opposite direction of clockwise.
• the observation could also be performed on the side of the back 8 of the substrate 2.
• the observation under an inclined angle can also make it possible to see the image resulting from the superposition of the patterns 5 and 6.
• the second marks 4 can be visible through the transparent spaces of the substrate 2 between the first marks 3.
• the security element 1 may comprise any of the characteristics described above.
• the substrate 2 may correspond to a transparent polyester layer having a thickness equal to 20 ⁇ m.
• the first and second marks 3 and 4 may correspond to aluminum metallizations.
• FIG. 5 shows, in section, an alternative embodiment of the security element 1 of FIG. 1.
• the security element 1 comprises a transparent colored layer 9 disposed on the front surface 8 of the substrate 2, between the substrate 2 and the second marks 4.
• the first marks 3 and / or the second marks 4 may appear colored.
• the second marks 4 may appear colored because of the presence of the second colored layer 9. of the security element 1, the first marks 3 may appear colored due to the presence of the colored layer 9.
• the colored layer 9 could be arranged on the front of the substrate 7 2.
• the colored layer 9 could also be arranged partially on the front and / or back of the substrate 2, in particular without extending from one edge to the other. other of the substrate 2.
• the colored layer 9 could still be disposed on the outer faces of the first marks 3 and / or second marks 4.
• the security element 1 could in particular comprise several colored layers 9.
• FIGS. 6 and 7 show two steps of a method of manufacturing a security element 1 according to the invention.
• a substrate 2 at least partially transparent is covered on either side of its faces by a first 10 and a second 11 metal layers, for example aluminum.
• the first and second metal layers 10 and 11 are respectively intended to form the first marks 3 and the second marks 4.
• FIG. 7 there is shown the step of demetallizing the metal layers 10 and 11 so as to form marks 3 and 4.
• the demetallization is obtained using a laser 12 directed on the front or the back of the security element 1.
• the laser 12 removes both the metal parts of the layer metal 11 that it passes through and also the metal parts of the metal layer 10 which are exactly superimposed on the parts of the metal layer 11 removed.
• the result obtained makes it possible to have first marks 3 and second marks 4 which are placed on the substrate 2 exactly at the mark, totally superimposed on one another.
• the method may further comprise a step of placing a cover on at least one of the faces of the security element 1 so as to partially mask the first and / or second marks 3 and 4, then to submit the first and / or or the second marks 3 and 4 not masked by the cache to a chemical treatment, particularly of the soda type, so as to remove them.
• a chemical treatment particularly of the soda type
• an at least partially transparent substrate 2 is covered on its front face 7 by a first metal layer 10 which is demetallized to form the first marks 3.
• the demetallization can be obtained by means of FIG. a laser or even using a cache and a chemical treatment as described above.
• a layer of a resin 13, capable of chemically modifying under the action of ultraviolet (UV) radiation is placed on the back 8 of the substrate 2.
• a second metal layer 11 is applied on the back 8 of the security element 1 on the resin layer 13.
• UV radiation is directed on the side of the front 7 of the security element 1, at the regions of the substrate 2 having no first 3 metallized marks.
• UV radiation is directed on the side of the front 7 of the security element 1, at the regions of the substrate 2 having no first 3 metallized marks.
• the parts of the resin layer 13 subjected to UV radiation disappear, and by the same the metal parts of the metal layer 11 which are arranged on the parts of the resin layer 13 removed.
• FIG 11 shows the final result obtained after exposure to UV radiation.
• the security element 1 comprises first metallized marks 3 on the front 7 of the substrate 2, and second metallized marks 4 on the back 8 of the substrate 2, the marks 3 and 4 being totally superimposed on each other.
• the second metallized marks 4 are not in direct contact with the substrate 2 but are arranged on the parts of the resin layer 13 which have not been subjected to UV radiation.
• the method may also comprise a step of forming the first 5 and / or the second 6 patterns formed respectively by the first 3 and second 4 marks, in particular by applying a cache and chemical treatment as described above.
• FIG. 12 shows, in section, another example of a security element 1 according to the invention.
• the first marks 3 overlap substantially with the second marks 4.
• the first marks 3 have in particular identical widths, which could alternatively be different, greater than the widths of the second marks 4, all equally identical, but which could also be variant be different.
• FIG. 13 shows, in section, another example of a security element 1 according to the invention.
• the second marks 4 are formed by two sets 4a and 4b made of impressions and / or different metallizations.
• the 4a and 4b assemblies are juxtaposed to one another but could alternatively be spaced apart.
• the assembly 4a is for example red in color and the assembly 4b is for example blue in color.
• the front of the security element 1 at a positive or negative angle (right or left) with respect to the normal front of the security element 1, it is possible to see the second marks 4 with a different color, red or blue.
• red or blue when observing the left side of a separation plane coincides with the median plane of the front of the security element 1, we can observe the whole 4a of blue color, and during the observation of the right side of the median plane of the front of the security element 1, we can observe the whole 4b of red color.
• the substrate 2 and / or the first marks 3 may also alternatively have aspects, in particular specific colors, which may combine with the sets 4a and 4b to form particular coloring effects.
• FIGS. 14 and 15 show, in front view, photographs of a security element 1 according to the invention.
• Figure 14 shows the observation of the security element 1 vertically (at normal incidence). We see that we observe that the first marks 3.
• Figure 15 shows the observation of the security element 1 at an angle of 45 °. We see that we then observe the image formed by the superposition of the first 3 and second 4 marks.
• FIG. 16 represents another example, in section, of security element 1 according to the invention.
• the security element 1 comprises for example a substrate 2 on the front 7 of which there are first marks 3 of identical widths.
• second marks 4 On the back 8 of the substrate 2 are second marks 4 of different widths.
• the widths of the second marks 4 can be chosen so that a first part of the second marks 4 is visible only at a first angle of observation relative to the front 7 of the substrate 2 and a second part of the second marks 4 is visible only by observation of the front 7 of the substrate 2 at a second angle different from the first angle.
• the observation of the front 7 of the substrate 2 at an angle equal to 90 ° to the front 7, represented by the arrows Fi on FIG. 16 may allow only the first marks 3 to be observed, the second marks 4 being hidden by the first marks 3.
• the observation of the front side 7 according to a first angle ⁇ can make it possible to observe only a first part of the second marks 4.
• the observation according to the first angle ⁇ may allow to observe part of the second mark 4 'and all the first marks 3, as can be seen in Figure 16.
• the observation of the second marks 4 "is not possible according to the first angle ⁇ .
• the observation of the recto 7 of the substrate 2 according to a second angle ⁇ , different from the first angle ⁇ , represented in FIG. 16 by the arrows F 3 , can make it possible to observe a second portion of the second marks 4.
• the observation according to the second angle ⁇ can be used to observe the second marks 4 "and the first marks 3, as can be seen in Figure 16, but also to observe the entire second mark 4".
• the second marks 4 have widths equal to the widths of the first marks 3, It is possible to observe all of the second marks 4 by observation at a given angle.
• the second marks 4 have variable widths, smaller than the widths of the first marks 3, it is possible to observe a first part of the second marks 4 by observation at a first angle and then a second part of a second mark. 4 by observation at a second angle different from the first angle.
• the invention may, for example, make it possible to observe an evolutionary image as a function of the value of the angle of observation.
• the security element could comprise a multilayer substrate comprising one or more layers provided with marks as defined above. In this way, the combination of the first and second marks with the marks of the substrate could provide other visual effects during the observation.

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• 2009
  • 2009-02-03 FR FR0950668A patent/FR2941649A1/fr not_active Withdrawn
• 2010
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