EP3013597B1 - Security element and document incorporating such a security element - Google Patents
Security element and document incorporating such a security element Download PDFInfo
- Publication number
- EP3013597B1 EP3013597B1 EP14741399.1A EP14741399A EP3013597B1 EP 3013597 B1 EP3013597 B1 EP 3013597B1 EP 14741399 A EP14741399 A EP 14741399A EP 3013597 B1 EP3013597 B1 EP 3013597B1
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- EP
- European Patent Office
- Prior art keywords
- sheet
- message
- layer
- security element
- element according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
Classifications
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- 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
-
- 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
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- B42D2033/04—
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- B42D2033/06—
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- B42D2033/10—
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- B42D2033/16—
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- B42D2033/18—
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- B42D2035/36—
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- B42D2035/50—
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- 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
- B42D25/328—Diffraction gratings; Holograms
-
- 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
- B42D25/30—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
- B42D25/391—Special inks absorbing or reflecting polarised 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
- B42D25/45—Associating two or more layers
- B42D25/465—Associating two or more layers using chemicals or adhesives
- B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
Definitions
- the invention relates to the field of authentication of products, security documents and other objects in particular to enable a user or recipient to verify their provenance and / or authenticity by a visual control especially.
- EP 0 400 902 A2 described in FIG. 13 a security element adapted to reveal at least two distinct messages according to at least two different observation conditions, comprising, on the one hand, a stack of at least: a first sheet, and a last sheet and, on the other hand: on the front face of the first sheet at least a first message formed by at least one pattern layer, between the first sheet and the last sheet, at least one second message formed by at least one pattern layer, the first message being visible in first observation conditions and the second message being visible in second observation conditions different from the first observation conditions.
- EP 0 400 902 A2 does not describe that the first sheet is at least partially translucent (in EP 0 400 902 A2 it is transparent), nor that the element comprises between the front of the first sheet, included, and the backside, included, of the last sheet, at least a first layer at least partially semi-reflecting.
- the term "pattern layer” is intended to mean a layer of one or more products or materials that can be perceived by the human eye or by an automatic detection system such as a solid color or a juxtaposition of colors.
- the pattern layer can be obtained by deposition of one or more inks or pigments or by the combination of photonic networks resulting from the stacking of several layers of different refractive index material, without this list being neither limiting nor exhaustive.
- an area of a sheet or layer is said to be translucent when the light passing through said translucent zone does not make it possible to distinguish the objects situated behind said translucent zone, the light being diffused by said zone translucent.
- an area of a sheet or layer is described as transparent when said transparent zone does not diffuse and / or absorbs light, the incident rays according to the laws of Snell-Descartes, it is then possible to perceive the objects located behind said transparent area.
- a sheet or a layer is said to be at least partially translucent when it comprises at least one at least one translucent zone, that is to say a zone that allows light to pass under conditions that make it possible to qualify it as translucent. either under conditions that qualify it as transparent or in intermediate conditions between translucent and transparent. Said at least translucent zone can then occupy all or part of the surface of the at least partially translucent sheet or layer.
- a sheet or a layer is said to be at least partially transparent when it comprises at least one transparent zone, this transparent zone possibly occupying all or part of the surface of the sheet
- An area of a sheet or a layer is said to be semi-reflective when, in the absence of light at the rear of said semi-reflecting zone with respect to the observation, it is possible to clearly see any object located at the front of said semi-reflective zone and reflecting, as in a mirror, on the front face of the semi-reflecting zone with respect to the observation, while in the presence of transmitted light any object lying behind said semi-reflecting zone is visible.
- a semi-reflective zone reflects between 5% and 90% of the incident light and transmits between 5% and 90% of the incident light with the understanding that a very small proportion of the incident light is absorbed by the sheet or layer. In a preferred but not exclusive manner a semi-reflective zone transmits between 10% and 65% of the incident light reflects and reflects between 35% and 90% of the incident light that a very small proportion of the incident light is absorbed by the sheet or layer.
- a sheet or a layer is said to be at least partially semi-reflective when it comprises at least one semi-reflecting zone which can occupy all or part of the surface of the sheet or of the at least partially semi-reflecting layer.
- An area of a sheet or layer is said to be opaque when light can not pass through said opaque zone.
- a sheet or layer is said to be at least partially opaque when it comprises at least one opaque zone which may occupy all or part of the surface of the at least partially opaque sheet or layer.
- the first sheet may be of any suitable nature in that it comprises at least one area that transmits a portion of the incident light on its back.
- the first sheet is not necessarily translucent over its entire surface and may also include at least one at least one translucent area and at least one opaque area.
- the first sheet may have opaque areas combined with at least translucent areas to form a pattern or series of patterns.
- the first sheet may be a sheet of paper, a sheet of a synthetic material or a composite material without this list being neither exhaustive nor exhaustive
- the last sheet may be of any suitable nature so the last sheet may be at least partially opaque or at least partially translucent.
- the last leaf may also be partially opaque and partially translucent.
- the last sheet may also have opaque areas combined with at least translucent areas to form a pattern or series of patterns.
- the last sheet may be a sheet of paper, a sheet of cardboard, a sheet of a synthetic material or a composite material without this list being neither exhaustive nor exhaustive.
- the first sheet is an at least partially semi-reflective sheet. That is to say a finished product comprising an at least partially transparent sheet carrying an at least partially semi-reflective layer. Each semi-reflective zone of the semi-reflecting layer is then located in relation to each transparent zone of the sheet at least partially transparent.
- the at least partially semi-reflective sheet may comprise a metal deposit, such as aluminum, whose adjustment of the optical density, that is to say the adjustment of the amount of deposited metal, makes it possible to modulate the transmittance of the at least partially semi-reflecting sheet obtained by combining the at least partially transparent sheet with the metal deposit.
- the at least partially transparent sheet is not necessarily transparent over its entire surface and may have opaque areas combined with transparent areas so as to form a pattern or series of patterns.
- the metallic material does not necessarily cover the entire surface of the transparent sheet and may also have different densities in different areas of the at least partially transparent sheet so as to form a pattern or series of patterns.
- the constituent pattern layer of the first message is located on or against the at least partially semi-reflective first layer. This position of the pattern layer makes it possible to take advantage of polarization phenomena of light that can be used for the authentication of the security element according to the invention.
- the security element comprises between the first sheet and the last sheet a message complementary to the first message formed by at least one pattern layer.
- the complementary message corresponds to the negative of the first message so that the first message and its complementary message are not visible in transmitted light.
- the security element comprises between the second message and the last sheet at least one layer of a material comprising fluorescent pigments excitable by ultraviolet radiation. This feature allows the second message to be visible at least in reflection under UV illumination from the front of the stack.
- the last sheet is at least partially translucent.
- the security element comprises between the back, inclusive, of the first sheet and the back, inclusive, of the last sheet at least a second layer at least partially semi-reflecting.
- the last sheet is semi-reflective. That is to say a finished product as described above with regard to the first semi-reflective sheet.
- At least one at least partially semi-reflective layer has zones possessing different light transmission coefficients.
- the security element comprises between the front, inclusive, of the first sheet and the back, inclusive, of the last sheet, at least one layer of a high refractive index material.
- the implementation of such a high refractive index layer makes it possible to accentuate the reflection of the light rays in the stack and thus to increase the contrasts during the reflection observation of the first or second message in particular.
- the layer of a high refractive index material may be disposed between the constituent pattern layer of the first message and the first sheet which enhances the reflection and brilliance of the first message. If the layer of a high refractive index material is disposed between the first and the last sheet, the reflection is accentuated equally on both sides of the security element. In the case where a layer of a high refractive index material is disposed between the first message and the first sheet and / or between the third message and the last sheet, it may have diffractive properties, including a holographic appearance forming a pattern.
- high refractive index material is to be understood to mean a material having an optical refractive index value greater than or equal to 2 and for example of the order of 2.7.
- the high refractive index layer has zones having different refractive indices.
- the security element comprises between the first sheet and the last sheet, an intermediate sheet at least partially partially transparent carrying at least one layer of a high refractive index material.
- the stack comprises between the back, inclusive, of the first sheet and the front, inclusive, of the last sheet, at least one partially opaque layer.
- a partially opaque layer comprises at least one opaque zone and at least one at least one translucent zone, which may, for example, but not exclusively form one or more patterns.
- the partially opaque layer comprises a metal deposit.
- the security element comprises on the reverse side of the last sheet at least one third message formed by at least one pattern layer, the third message being visible under third conditions. different observation of the first and second observation conditions.
- the security element comprises, between the first sheet and the last sheet, a message complementary to the third message formed by at least one pattern layer.
- the complementary message can then correspond to the negative of the third message so that the third message and its complementary message are not visible in transmitted light.
- the security element comprises between the first sheet and the last sheet an intermediate sheet at least partially transparent comprising a complementary message of the first message and / or a complementary message of the third message and / or a second message.
- the security element comprises, between the first sheet and the last sheet, a layer comprising at least one hologram.
- the security element comprises, between the first sheet, included, and the last sheet, included, a transparent layer containing oriented reflective plates.
- At least some of the constituent sheets of the stack are linked to each other.
- the constituent sheets of the stack are connected to each other on at least all the parts of their surfaces corresponding to each of the messages, so that in the event of an attempt to separation of said sheets the messages are at least partly altered.
- connection of the constituent sheets of the security element can be carried out in any appropriate manner, in particular by rolling.
- the security element comprises at least one layer of adhesive disposed at least between two constituent sheets of the stack.
- the security element comprises on the front face of the first sheet and / or on the back side of the last sheet a protective layer at least partially transparent.
- a transparent protective layer made in any appropriate manner and for example formed by a layer of glue or varnish.
- At least one of the pattern layers is formed by printing.
- the invention also relates to a security document including a security element according to the invention and forming for example a passport, an identity card, a driving license, a playing card or interactive collector, a means of payment, including a credit card, bank note, purchase order or voucher, secure label, transport card, loyalty card, service card, membership card or specific payment method such as a token or a wafer especially used in casinos.
- a security document including a security element according to the invention and forming for example a passport, an identity card, a driving license, a playing card or interactive collector, a means of payment, including a credit card, bank note, purchase order or voucher, secure label, transport card, loyalty card, service card, membership card or specific payment method such as a token or a wafer especially used in casinos.
- a security element according to the invention is adapted to allow the display, from its front face R, of a first message M1, represented figure 2 , in first viewing conditions namely by reflection of an incident light L1 transmitted to the front face R of the security element 1.
- the security element 1 is also adapted to allow viewing, from the front recto R, of a second message M2 in second viewing conditions, namely by transmission of a light L2 passing through the security element 1 from its reverse side V to its front face R.
- the security element 1 is also adapted to allow the display of a third message M3, from its reverse side V, in third illumination conditions namely by reflection of an incident light L3 emitted towards the reverse side V.
- the security element 1 comprises a stack of a first at least partially semi-reflective sheet 2, and an intermediate sheet partially at least transparent 3 and a last one. at least partially semi-reflecting sheet 4.
- the first sheet 2 is formed by a sheet 2 'at least partially translucent, in this case transparent, on which is applied a first layer 2 "at least partially semi-reflective comprising a metal deposit such as
- the first layer 2 " is oriented towards the front face R of the security element 1.
- the face of each sheet constituting the stack forming the element 1, oriented towards the front face R of the security element 1 will be designated as the front face of said sheet while the opposite face of the latter will be designated as the reverse side.
- the at least partially semi-reflective first layer 2 "forms the front face of the first sheet 2.
- the last semi-reflecting sheet 4 is formed by a transparent sheet 4 'at least partially translucent, in this case transparent, on the back of which is applied a second layer 4 "at least partially semi-reflective including, in this case, at least one metal deposit such as an aluminum deposit.
- the first and second at least partially reflective layers 2 "and 4" preferably have an optical density of between 0.2 and 1 so that the at least partially semi-reflecting sheets 2 and 4 correspond to a transmittance of between 10% and 10%. and 65% and preferably of the order of 40%.
- the manufacture of the security element 1 from the first sheet 2, the intermediate sheet 3 and the last sheet 4 is carried out as follows.
- the first message M1 is formed on the front face R of the first sheet 2, in this case the face carrying the first layer 2 ", by the application or printing of at least a first pattern layer 5 comprising less an ink this first pattern layer 5 is made to reproduce the patterns of the first message M1 as illustrated in FIG. figure 3 .
- the third message M3 is formed on the back side of the last sheet 4, in this case the face carrying the at least partially reflective second layer 4 ", by the application or printing of at least a second pattern layer 6 comprising at least one ink
- This second pattern layer 6 is made to reproduce the patterns of the third message M3 as illustrated in FIG. figure 3 .
- the security element 1 comprises a message M1 ', illustrated in FIG. figure 3 , complementary to the first message M1 in that the superposition of the first message M1 with its complementary message M1 'provides a background on which the first message M1 is not visible.
- the message M1 ' is the negative of the message M1.
- the security element 1 comprises a message M3 ', represented figure 3 , complementary to the third message M3 in that the superposition of the third message M3 with its complementary message M3 provides a background on which the third message M3 is not visible.
- the message M3 ' is the negative of the message M3.
- the complementary messages M1 'and M3' and the second message M2 are formed by at least one pattern layer 7 comprising at least one ink which is applied or printed on the front face of the intermediate sheet 3.
- the pattern layer 7 forms the combination of the complementary messages M1 ', M3' and the message M2 as shown in FIG. figure 3 .
- the patterns of the complementary messages M1 ', M3' are printed so as to coincide with the patterns of the first respectively third message in the constituent stack of the security element 1 according to the invention.
- the three sheets 2, 3, 4 thus printed are then laminated together with interposition, on the one hand, of a layer 8 of transparent adhesive between the first sheet 2 and the intermediate sheet 3 and, on the other hand, a layer 9 of transparent adhesive between the intermediate sheet 3 and the last sheet 4.
- This rolling is performed so as to ensure coincidence, on the one hand, the reasons for the first message M1 with the reasons for its complementary message M1 'and, d on the other hand, patterns of the third message M3 with the reasons for its complementary message M3 '.
- the glue or adhesive used may be of any appropriate nature.
- the cohesive force of the adhesive is preferably greater than the coherence of the sheets 2, 3, 4 as well as that of the pattern layers. 5, 6, 7.
- the front faces R and verso V are each covered with a layer, respectively 10 and 11, transparent protection, for example a layer of glue or varnish, which protects the layers of ink 5 and 6 corresponding and allows the adhesion of the security element on the document.
- transparent protection for example a layer of glue or varnish, which protects the layers of ink 5 and 6 corresponding and allows the adhesion of the security element on the document.
- transparent protective layers are optional and the security element 1 according to the invention may not comprise or include on one of its faces.
- FIG 4 illustrates an alternative embodiment of a security element according to the invention, which differs from that described above in relation to the Figures 1 to 3 in that the intermediate sheet is replaced by a partly transparent at least one layer 14 comprising a hologram such as, for example, a Lippman hologram as described in the patent. EP 1 674 286 .
- a hologram such as, for example, a Lippman hologram as described in the patent. EP 1 674 286 .
- the figure 5 illustrates an alternative embodiment of a security element according to the invention, which differs from that described above in relation to the Figures 1 to 3 in that the intermediate sheet is replaced by a partly transparent at least one layer 16 comprising reflecting plates 17 oriented parallel to one another so that the second message M2 is visible in transmission only in a parallel observation direction. to platelets.
- a layer can be obtained by the dispersion of reflective platelets of a ferromagnetic metal in a resin whose orientation is provided magnetically until polymerization of the resin as described in the patent EP 1 819 525 .
- the figure 6 illustrates an alternative embodiment of a security element according to the invention, which differs from that described above in relation to the Figures 1 to 3 , in that it does not include an intermediate sheet.
- the layer 7 of at least one ink comprising the complementary messages M1 'and M3' as well as the second message M2 is then printed on the reverse side of the first sheet 2. This printing is carried out so that the complementary message M1 'coincides with the first message M1 while the assembly of the first sheet 2 with the last sheet 4 is performed so as to ensure the coincidence of the complementary message M3 'with the third message.
- the figure 7 illustrates an alternative embodiment of a security element according to the invention, which differs from that described above in relation to the Figures 1 to 3 , in that the last sheet 20 is a sheet of paper and in that it comprises only the first M1 and second M2 messages and the message M1 'complementary to the first message M1.
- the pattern layer 5, constituting the first M1 message is printed on the first layer at least partially semi-reflective 2 "located on the side of the front R security element 1.
- the first message M1 is visible, from the front face R, in reflection during the illumination of the front face R of the security element 1 by means of a non-polarized light L1.
- the second message M2 is visible, from the front face R, in reflection during the illumination and the visualization of the front face R through a circular polarizer 22.
- the circular polarizer 22 comprises a linear polarizer 23 situated on the side of the light source and a quarter-wave plate 24 located on the side of the security element 1.
- the linear polarizer 23 has the property of letting the light having a polarization parallel to its own and block the light perpendicular to its axis of polarization, and attenuates the others.
- the quarter-wave plate 24 has the property of transforming a linearly polarized light into a circular polarization light and conversely to transform a circular polarization light into a linear polarization light.
- the light having passed through the polarizer 22 will be an incident light L2 'having a circular polarization in a given direction.
- the light conveying the first message M1 will result from a single reflection on the at least partially semi-reflective first layer 2 "so that it will have a circular polarization in the opposite direction to the incident light L2 '.
- conveying the second message M2, obtained by reflection on the last paper sheet 20, is found unpolarized, that is to say that all the polarizations are present, and will then be attenuated but not stopped by the circular polarizer 22 thus allowing the display of the second message M2.
- the figure 8 illustrates an alternative embodiment of a security element according to the invention, which differs from that described above in relation to the figure 7 , in that the security element 1 comprises, between the ink layer 21 and the sheet 20, a layer 26 of a material containing fluorescent pigments excitable by UV ultraviolet radiation.
- the first message M1 is visible, from the front face R, in reflection during the illumination of the front face R of the security element 1 by means of a white light L1 or daylight.
- the second message M2 is visible to it, from the front face R, during the illumination of the front face R by a UV ultraviolet light which excites the fluorescent pigments of the layer 26 which then emit visible light radiation at the back of the ink layer 21.
- the second message M2 is visible, on the one hand, in transmission from the back side V in natural lighting and, on the other hand, in reflection from the front face R in UV illumination.
- the figure 9 illustrates a variant of the security element illustrated in figure 1 , which differs from the latter in that the security element 1 further comprises sheets and layers described in connection with the figure 1 a layer 30 with a high refractive index such as, for example, a layer of a titanium dioxide deposit.
- the layer 30 is in this case located between the intermediate sheet 3 and the pattern layer 7.
- the use of such a high refractive index layer 30 makes it possible to increase the amount of reflected light without overly attenuating the light transmitted.
- the non-colored or neutral high refractive index layer further preserves the color of the pattern layer in contrast to a semi-reflective layer which is generally gray in color.
- the complementary message M1 'and / or M3' and the second message M2 are formed by the same pattern layer.
- the complementary message M1 'and / or M3' as well as the second message M2 may also be formed by several pattern layers which may, for example, be located on distinct faces of sheets of the stack.
- the security element 1 can be incorporated or included in a security document, a passport, an identity card, a driving license, a playing card or interactive collector, a means of payment including a credit card, bank note, voucher, voucher, transport card, loyalty card, service card or membership card.
- a security document thus obtained therefore comprises at least one security element 1 as described above. However, it may include other "first level” security elements and / or at least one so-called “second level” and / or "third level” security element.
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Description
L'invention concerne le domaine de l'authentification de produits, de documents de sécurité et d'objets divers afin, notamment, de permettre à un utilisateur ou destinataire d'en vérifier la provenance et/ou l'authenticité, par un contrôle visuel notamment.The invention relates to the field of authentication of products, security documents and other objects in particular to enable a user or recipient to verify their provenance and / or authenticity by a visual control especially.
Dans le domaine ci-dessus il est connu de mettre en oeuvre des éléments de sécurité portant un message facilement lisible à l'oeil nu tout en étant difficilement reproductible au moyen, par exemple, d'outils de reproduction automatisés comme les scanners et imprimantes ou encore les photocopieurs. Parmi les éléments de sécurité présentant ces caractéristiques, il est possible de citer les hologrammes Lippmann. Il est également possible de citer les structures d'empilement de feuilles ou de couche transparentes ou semi-transparente comprenant une couche transparente dans laquelle sont inclus des plaquettes métalliques réfléchissantes orientées de manière à ne permettre une visualisation d'un message porté par l'une ou l'autre des autres feuilles que selon une orientation donnée qui est, de préférence, choisie pour ne pas être normale à la face observation de l'empilement.In the above field it is known to implement security elements carrying a message easily readable with the naked eye while being difficult to reproduce by means, for example, of automated reproduction tools such as scanners and printers or still the photocopiers. Among the security elements having these characteristics, it is possible to mention Lippmann holograms. It is also possible to mention the transparent or semi-transparent sheet or layer stacking structures comprising a transparent layer in which are included reflective metal plates oriented in such a way as to make it impossible to display a message carried by one of them. or the other of the other sheets that in a given orientation which is preferably chosen to not be normal to the observation side of the stack.
Dans le domaine ci-dessus, l'ingéniosité des contrefacteurs alliée à l'évolution permanente des technologies permet de réduire la difficulté de reproduction d'éléments de sécurité qui au moment de leur conception étaient réputés difficile voire impossible à contrefaire sauf à mettre en oeuvre des moyens de reproduction ou de production présentant des coûts économiquement dissuasifs. Ainsi, il est toujours recherché des éléments de sécurité dont la contrefaçon ou la reproduction est aussi difficile que possible avec des moyens de reproduction automatisés.In the above field, the ingenuity of the counterfeiters combined with the constant evolution of technologies makes it possible to reduce the difficulty of reproducing security elements which at the time of their design were deemed difficult or even impossible to counterfeit except to implement means of reproduction or production presenting economically dissuasive costs. Thus, it is always sought security elements whose counterfeiting or reproduction is as difficult as possible with automated reproduction means.
Afin d'atteindre cet objectif de difficulté de reproduction, l'invention propose un élément de sécurité adapté pour révéler au moins deux messages distincts selon au moins deux conditions d'observation et/ou d'illumination différentes, caractérisé en qu'il comprend, d'une part, un empilement d'au moins :
- une première feuille au moins partiellement translucide,
- et une dernière feuille,
- sur la face recto de la première feuille au moins un premier message formé par au moins une couche de motif,
- entre la première feuille et la dernière feuille, au moins un deuxième message formé par au moins une couche de motif,
- entre le recto, inclus, de la première feuille et le verso, inclus, de la dernière feuille, au moins une première couche au moins partiellement semi-réfléchissante,
- a first sheet that is at least partially translucent,
- and a last leaf,
- on the front side of the first sheet at least a first message formed by at least one pattern layer,
- between the first sheet and the last sheet, at least one second message formed by at least one pattern layer,
- between the front, included, of the first sheet and the back, inclusive, of the last sheet, at least a first layer at least partially semi-reflecting,
La présence sur l'élément de sécurité selon l'invention de deux messages visibles selon deux conditions de d'observation et/ou d'illumination différentes permet de rendre difficile voire impossible une reproduction de l'élément de sécurité par simple photocopie. En effet, dans le cadre d'une photocopie faisant intervenir généralement un éclairage par réflexion seul l'un des messages sera reproduit ou au contraire, dans le cas d'un éclairage puissant les deux messages seront reproduits simultanément de sorte que la contrefaçon sera facilement identifiable. En effet, selon l'invention dans l'une au moins des conditions d'observation et/ou d'illumination un seul des messages est visible tandis que l'autre ne l'est pas tandis que dans les autres conditions d'illumination l'autre message est visible avec éventuellement le premier message.The presence on the security element according to the invention of two visible messages according to two conditions of observation and / or different illumination makes it difficult or impossible to reproduce the security element by simple photocopying. Indeed, as part of a photocopy usually involving reflection lighting only one of the messages will be reproduced or on the contrary, in the case of a powerful lighting both messages will be reproduced simultaneously so that counterfeiting will easily identifiable. Indeed, according to the invention in at least one of the observation and / or illumination conditions, only one of the messages is visible while the other is not visible while in the other illumination conditions. other message is visible with possibly the first message.
Au sens de l'invention, il convient d'entendre par message un motif ou une série de motifs de toute nature comme par exemple :
- une ou plusieurs images (être humain, portrait, animal, paysages, nature morte, formes géométriques abstraites, etc.),
- une ou plusieurs inscriptions,
- un ou plusieurs symboles appartenant ou non à un système d'écriture,
- une ou plusieurs lettres,
- un ou plusieurs symboles alphanumériques
- one or more images (human being, portrait, animal, landscapes, still life, abstract geometric forms, etc.),
- one or more inscriptions,
- one or more symbols belonging or not to a writing system,
- one or more letters,
- one or more alphanumeric symbols
Au sens de l'invention, il convient d'entendre par « couche de motif» une couche d'un ou plusieurs produits ou matériaux susceptibles d'être perçu par l'oeil humain ou par un système de détection automatique comme une couleur unie ou une juxtaposition de couleurs. Ainsi, la couche de motif peut être obtenue par dépôt d'une ou plusieurs encres ou de pigments ou encore par la combinaison de réseaux photoniques résultant de l'empilement de plusieurs couches de matériau d'indice de réfraction différents, sans que cette liste ne soit ni limitative, ni exhaustive.Within the meaning of the invention, the term "pattern layer" is intended to mean a layer of one or more products or materials that can be perceived by the human eye or by an automatic detection system such as a solid color or a juxtaposition of colors. Thus, the pattern layer can be obtained by deposition of one or more inks or pigments or by the combination of photonic networks resulting from the stacking of several layers of different refractive index material, without this list being neither limiting nor exhaustive.
Au sens de l'invention, une zone d'une feuille ou d'une couche est dite translucide lorsque que la lumière qui traverse ladite zone translucide ne permet pas de distinguer les objets situés derrière ladite zone translucide, la lumière étant diffusée par ladite zone translucide.For the purposes of the invention, an area of a sheet or layer is said to be translucent when the light passing through said translucent zone does not make it possible to distinguish the objects situated behind said translucent zone, the light being diffused by said zone translucent.
De même, une zone d'une feuille ou d'une couche est qualifiée de transparente lorsque ladite zone transparente ne diffuse pas et/ou absorbe peu la lumière, les rayons incidents suivant les lois de Snell-Descartes, il est alors possible de percevoir les objets situés derrière ladite zone transparente.Similarly, an area of a sheet or layer is described as transparent when said transparent zone does not diffuse and / or absorbs light, the incident rays according to the laws of Snell-Descartes, it is then possible to perceive the objects located behind said transparent area.
Ainsi, une feuille ou une couche est dite au moins partiellement translucide lorsque qu'elle comprend au moins une zone au moins translucide, c'est-à-dire une zone qui laisse passer la lumière soit dans des conditions permettant de la qualifier de translucide soit dans des conditions permettant de la qualifier de transparente, soit dans conditions intermédiaires entre translucide et transparente. Ladite zone au moins translucide peut alors occuper tout ou partie de la surface de la feuille ou de la couche au moins partiellement translucide.Thus, a sheet or a layer is said to be at least partially translucent when it comprises at least one at least one translucent zone, that is to say a zone that allows light to pass under conditions that make it possible to qualify it as translucent. either under conditions that qualify it as transparent or in intermediate conditions between translucent and transparent. Said at least translucent zone can then occupy all or part of the surface of the at least partially translucent sheet or layer.
Par ailleurs, une feuille ou une couche est dite au moins partiellement transparente lorsqu'elle comprend au moins une zone transparente, cette zone transparente pouvant occuper tout ou partie de la surface de la feuilleOn the other hand, a sheet or a layer is said to be at least partially transparent when it comprises at least one transparent zone, this transparent zone possibly occupying all or part of the surface of the sheet
Une zone d'une feuille ou d'une couche est dite semi-réfléchissante lorsqu'en l'absence de lumière à l'arrière de ladite zone semi-réfléchissante par rapport à l'observation, il est possible de voir distinctement tout objet se trouvant à l'avant de ladite zone semi-réfléchissante et se réfléchissant, comme dans un miroir, sur la face avant de la zone semi-réfléchissante par rapport à l'observation, tandis qu'en présence de lumière transmise tout objet se situant derrière ladite zone semi-réfléchissante est visible. Une zone semi-réfléchissante réfléchit entre 5% et 90% de la lumière incidente et transmet entre 5% et 90% de la lumière incidente étant entendu qu'une très faible proportion de la lumière incidente est absorbée par la feuille ou la couche. De manière préférée mais non exclusive une zone semi-réfléchissante transmet entre 10% et 65% de la lumière incidente et réfléchit entre 35% et 90% de la lumière incidente qu'une très faible proportion de la lumière incidente est absorbée par la feuille ou la couche.An area of a sheet or a layer is said to be semi-reflective when, in the absence of light at the rear of said semi-reflecting zone with respect to the observation, it is possible to clearly see any object located at the front of said semi-reflective zone and reflecting, as in a mirror, on the front face of the semi-reflecting zone with respect to the observation, while in the presence of transmitted light any object lying behind said semi-reflecting zone is visible. A semi-reflective zone reflects between 5% and 90% of the incident light and transmits between 5% and 90% of the incident light with the understanding that a very small proportion of the incident light is absorbed by the sheet or layer. In a preferred but not exclusive manner a semi-reflective zone transmits between 10% and 65% of the incident light reflects and reflects between 35% and 90% of the incident light that a very small proportion of the incident light is absorbed by the sheet or layer.
Ainsi, une feuille ou une couche est dite au moins partiellement semi-réfléchissante lorsqu'elle comprend au moins une zone semi-réfléchissante qui peut occuper tout ou partie de la surface de la feuille ou de la couche au moins partiellement semi-réfléchissante.Thus, a sheet or a layer is said to be at least partially semi-reflective when it comprises at least one semi-reflecting zone which can occupy all or part of the surface of the sheet or of the at least partially semi-reflecting layer.
Une zone d'une feuille ou d'une couche est dite opaque lorsque la lumière ne peut traverser ladite zone opaque. Une feuille ou une couche est dite au moins partiellement opaque lorsqu'elle comprend au moins une zone opaque qui peut occuper tout ou partie de la surface de la feuille ou de la couche au moins partiellement opaque.An area of a sheet or layer is said to be opaque when light can not pass through said opaque zone. A sheet or layer is said to be at least partially opaque when it comprises at least one opaque zone which may occupy all or part of the surface of the at least partially opaque sheet or layer.
Selon l'invention la première feuille peut être de toute nature appropriée dans la mesure où elle comprend au moins une zone qui transmet une partie de la lumière incidente sur son verso. La première feuille n'est pas nécessairement translucide sur toute sa surface et peut aussi comprendre au moins une zone au moins translucide et au moins une zone opaque. La première feuille peut présenter des zones opaques combinées avec des zones au moins translucide de manière à former un motif ou une série de motifs. La première feuille peut être une feuille de papier, une feuille d'un matériau synthétique ou encore d'un matériau composite sans que cette liste ne soit ni limitative, ni exhaustiveAccording to the invention the first sheet may be of any suitable nature in that it comprises at least one area that transmits a portion of the incident light on its back. The first sheet is not necessarily translucent over its entire surface and may also include at least one at least one translucent area and at least one opaque area. The first sheet may have opaque areas combined with at least translucent areas to form a pattern or series of patterns. The first sheet may be a sheet of paper, a sheet of a synthetic material or a composite material without this list being neither exhaustive nor exhaustive
Selon l'invention la dernière feuille peut être de toute nature appropriée ainsi la dernière feuille peut être au moins partiellement opaque ou au moins partiellement translucide. La dernière feuille peut également être partiellement opaque et partiellement translucide. La dernière feuille peut également présenter des zones opaques combinées avec des zones au moins translucide de manière à former un motif ou une série de motifs. La dernière feuille peut être une feuille de papier, une feuille de carton, une feuille d'un matériau synthétique ou encore d'un matériau composite sans que cette liste ne soit ni limitative, ni exhaustive.According to the invention the last sheet may be of any suitable nature so the last sheet may be at least partially opaque or at least partially translucent. The last leaf may also be partially opaque and partially translucent. The last sheet may also have opaque areas combined with at least translucent areas to form a pattern or series of patterns. The last sheet may be a sheet of paper, a sheet of cardboard, a sheet of a synthetic material or a composite material without this list being neither exhaustive nor exhaustive.
Selon une caractéristique de l'invention, la première feuille est une feuille au moins partiellement semi-réfléchissante. C'est-à-dire un produit fini comprenant une feuille au moins partiellement transparente portant une couche au moins partiellement semi-réfléchissante. Chaque zone semi-réfléchissante de la couche semi-réfléchissante est alors située en relation avec chaque zone transparente de la feuille au moins partiellement transparente. La feuille au moins partiellement semi-réfléchissante peut comprendre un dépôt métallique, tel que d'aluminium, dont l'ajustement de la densité optique, c'est-à-dire l'ajustement de la quantité de métal déposé, permet de moduler la transmitance de la feuille au moins partiellement semi-réfléchissante obtenue par la combinaison de la feuille au moins partiellement transparente avec le dépôt métallique. La feuille au moins partiellement transparente n'est pas nécessairement transparente sur toute sa surface et peut présenter des zones opaques combinées avec des zones transparentes de manière à former un motif ou une série de motifs. De la même manière, le matériau métallique ne recouvre pas nécessairement toute la surface de la feuille transparente et peut également présenter des densités différentes selon différentes zones de la feuille au moins partiellement transparente de manière à former un motif ou une série de motifsAccording to one characteristic of the invention, the first sheet is an at least partially semi-reflective sheet. That is to say a finished product comprising an at least partially transparent sheet carrying an at least partially semi-reflective layer. Each semi-reflective zone of the semi-reflecting layer is then located in relation to each transparent zone of the sheet at least partially transparent. The at least partially semi-reflective sheet may comprise a metal deposit, such as aluminum, whose adjustment of the optical density, that is to say the adjustment of the amount of deposited metal, makes it possible to modulate the transmittance of the at least partially semi-reflecting sheet obtained by combining the at least partially transparent sheet with the metal deposit. The at least partially transparent sheet is not necessarily transparent over its entire surface and may have opaque areas combined with transparent areas so as to form a pattern or series of patterns. In the same way, the metallic material does not necessarily cover the entire surface of the transparent sheet and may also have different densities in different areas of the at least partially transparent sheet so as to form a pattern or series of patterns.
Selon une autre caractéristique de l'invention, la couche de motif constitutive du premier message est située sur ou contre la première couche au moins partiellement semi-réfléchissante. Cette position de la couche de motif permet de mettre à profit des phénomènes de polarisation de la lumière susceptibles d'être utilisés pour l'authentification de l'élément de sécurité selon l'invention.According to another characteristic of the invention, the constituent pattern layer of the first message is located on or against the at least partially semi-reflective first layer. This position of the pattern layer makes it possible to take advantage of polarization phenomena of light that can be used for the authentication of the security element according to the invention.
Selon encore une autre caractéristique de l'invention, l'élément de sécurité comprend entre la première feuille et la dernière feuille un message complémentaire du premier message formé par au moins une couche de motif.According to yet another characteristic of the invention, the security element comprises between the first sheet and the last sheet a message complementary to the first message formed by at least one pattern layer.
Selon une variante de cette caractéristique, le message complémentaire correspond au négatif du premier message de sorte que le premier message et son message complémentaire ne sont pas visibles en lumière transmise.According to a variant of this characteristic, the complementary message corresponds to the negative of the first message so that the first message and its complementary message are not visible in transmitted light.
Selon une caractéristique de l'invention, l'élément de sécurité comprend entre le deuxième message et la dernière feuille au moins une couche d'un matériau comprenant des pigments fluorescents excitables par un rayonnement ultraviolet. Cette caractéristique permet au deuxième message d'être visible au moins en réflexion sous un éclairage UV à partir du recto de l'empilement.According to one characteristic of the invention, the security element comprises between the second message and the last sheet at least one layer of a material comprising fluorescent pigments excitable by ultraviolet radiation. This feature allows the second message to be visible at least in reflection under UV illumination from the front of the stack.
Selon une forme préférée mais non exclusive de réalisation de l'invention, la dernière feuille est au moins partiellement translucide.According to a preferred but non-exclusive embodiment of the invention, the last sheet is at least partially translucent.
Selon une variante de la forme préférée de réalisation, l'élément de sécurité comprend entre le verso, inclus, de la première feuille et le verso, inclus, de la dernière feuille au moins une deuxième couche au moins partiellement semi-réfléchissante.According to a variant of the preferred embodiment, the security element comprises between the back, inclusive, of the first sheet and the back, inclusive, of the last sheet at least a second layer at least partially semi-reflecting.
Selon une autre variante de la forme préférée de réalisation, la dernière feuille est semi-réfléchissante. C'est-à-dire un produit fini tel que décrit précédemment en ce qui concerne la première feuille semi-réfléchissante.According to another variant of the preferred embodiment, the last sheet is semi-reflective. That is to say a finished product as described above with regard to the first semi-reflective sheet.
Selon une caractéristique de l'invention, au moins une couche au moins partiellement semi-réfléchissante comprend un dépôt métallique d'un matériau choisi parmi les matériaux suivants :
- aluminium,
- argent,
- cuivre,
- or,
- nickel,
- des oxydes, des mélanges ou des alliages d'un ou plusieurs de ces matériaux sans que cette liste ne soit ni limitative, ni exhaustive.
- aluminum,
- money,
- copper,
- gold,
- nickel,
- oxides, mixtures or alloys of one or more of these materials without this list being neither limiting nor exhaustive.
Selon une autre caractéristique de l'invention, au moins une couche au moins partiellement semi-réfléchissante présente des zones possédants des coefficients de transmission de la lumière différents.According to another characteristic of the invention, at least one at least partially semi-reflective layer has zones possessing different light transmission coefficients.
Selon une caractéristique de l'invention, l'élément de sécurité comprend entre le recto, inclus, de la première feuille et le verso, inclus, de la dernière feuille, au moins une couche d'un matériau à indice de réfraction élevé. La mise en oeuvre d'une telle couche à indice de réfraction élevé permet d'accentuer la réflexion des rayons lumineux dans l'empilement et donc d'augmenter les contrastes lors de l'observation en réflexion du premier ou du deuxième message notamment. La couche d'un matériau à indice de réfraction élevé peut être disposée entre la couche de motif constitutive du premier message et la première feuille ce qui accentue la réflexion et la brillance du premier message. Si La couche d'un matériau à indice de réfraction élevé est disposée entre ia première et la dernière feuille, la réflexion est accentuée de manière équivalente sur les deux faces de l'élément de sécurité. Dans le cas où une couche d'un matériau à indice de réfraction élevé est disposée entre le premier message et la première feuille et/ou entre le troisième message et la dernière feuille, elle peut présenter des propriétés diffractives, notamment un aspect holographique formant un motif.According to a feature of the invention, the security element comprises between the front, inclusive, of the first sheet and the back, inclusive, of the last sheet, at least one layer of a high refractive index material. The implementation of such a high refractive index layer makes it possible to accentuate the reflection of the light rays in the stack and thus to increase the contrasts during the reflection observation of the first or second message in particular. The layer of a high refractive index material may be disposed between the constituent pattern layer of the first message and the first sheet which enhances the reflection and brilliance of the first message. If the layer of a high refractive index material is disposed between the first and the last sheet, the reflection is accentuated equally on both sides of the security element. In the case where a layer of a high refractive index material is disposed between the first message and the first sheet and / or between the third message and the last sheet, it may have diffractive properties, including a holographic appearance forming a pattern.
Au sens de l'invention, il convient d'entendre par matériau à indice de réfraction élevé un matériau présentant une valeur d'indice optique de réfraction supérieure ou égale à 2 et par exemple de l'ordre de 2,7.Within the meaning of the invention, high refractive index material is to be understood to mean a material having an optical refractive index value greater than or equal to 2 and for example of the order of 2.7.
La couche à indice de réfraction élevé peut être réalisée de toute manière appropriée et, par exemple, comprendre une couche d'un matériau à indice de réfraction élevé choisi parmi
- dioxyde de titane (TiO2)
- sulfure de zinc (ZnS)
- un composé inorganique transparent présentant un indice de réfraction supérieur à 2, sans que cette liste ne soit ni limitative, ni exhaustive.
- titanium dioxide (TiO2)
- Zinc sulphide (ZnS)
- a transparent inorganic compound having a refractive index greater than 2, without this list being neither limiting nor exhaustive.
Selon une variante de l'invention, la couche à indice de réfraction élevé présente des zones possédant des indices de réfraction différents.According to a variant of the invention, the high refractive index layer has zones having different refractive indices.
Selon une caractéristique de l'invention, l'élément de sécurité comprend entre la première feuille et la dernière feuille, une feuille intermédiaire en partie au moins partiellement transparente portant au moins une couche d'un matériau à haut indice de réfraction.According to a feature of the invention, the security element comprises between the first sheet and the last sheet, an intermediate sheet at least partially partially transparent carrying at least one layer of a high refractive index material.
Selon une caractéristique de l'invention, l'empilement comprend entre le verso, inclus, de la première feuille et le recto, inclus, de la dernière feuille, au moins une couche partiellement opaque. Au sens de l'invention une couche partiellement opaque comprend au moins une zone opaque et au moins une zone au moins translucide, qui peuvent, par exemple, mais non exclusivement former un ou plusieurs motifs. Selon une variante de cette caractéristique la couche partiellement opaque comprend un dépôt métallique.According to one characteristic of the invention, the stack comprises between the back, inclusive, of the first sheet and the front, inclusive, of the last sheet, at least one partially opaque layer. For the purposes of the invention, a partially opaque layer comprises at least one opaque zone and at least one at least one translucent zone, which may, for example, but not exclusively form one or more patterns. According to a variant of this feature, the partially opaque layer comprises a metal deposit.
Selon l'une caractéristique de la forme préférée de réalisation, l'élément de sécurité comprend sur la face verso de la dernière feuille au moins un troisième message formé par au moins une couche de motif, le troisième message étant visible dans des troisièmes conditions d'observation différentes des première et deuxième conditions d'observation.According to one characteristic of the preferred embodiment, the security element comprises on the reverse side of the last sheet at least one third message formed by at least one pattern layer, the third message being visible under third conditions. different observation of the first and second observation conditions.
Selon une variante de cette caractéristique, l'élément de sécurité comprend, entre la première feuille et la dernière feuille, un message complémentaire du troisième message formé par au moins une couche de motif.According to a variant of this characteristic, the security element comprises, between the first sheet and the last sheet, a message complementary to the third message formed by at least one pattern layer.
Le message complémentaire peut alors correspondre au négatif du troisième message de sorte que le troisième message et son message complémentaire ne sont pas visibles en lumière transmise.The complementary message can then correspond to the negative of the third message so that the third message and its complementary message are not visible in transmitted light.
Selon une caractéristique de l'invention, l'élément de sécurité comprend entre la première feuille et la dernière feuille une feuille intermédiaire en partie au moins transparente comprenant un message complémentaire du premier message et/ou un message complémentaire du troisième message et/ou un deuxième message.According to a characteristic of the invention, the security element comprises between the first sheet and the last sheet an intermediate sheet at least partially transparent comprising a complementary message of the first message and / or a complementary message of the third message and / or a second message.
Selon une caractéristique de l'invention, l'élément de sécurité comprend, entre la première feuille et la dernière feuille, une couche comprenant au moins un hologramme.According to one characteristic of the invention, the security element comprises, between the first sheet and the last sheet, a layer comprising at least one hologram.
Selon une autre caractéristique de l'invention, l'élément de sécurité comprend, entre la première feuille, incluse, et la dernière feuille, incluse, une couche transparente contenant des plaquettes réfléchissantes orientées.According to another characteristic of the invention, the security element comprises, between the first sheet, included, and the last sheet, included, a transparent layer containing oriented reflective plates.
Selon une encore autre caractéristique de l'invention, certaines au moins des feuilles constitutives de l'empilement sont liées les unes aux autres. Il convient d'entendre, au sens de l'invention, que les feuilles constitutives de l'empilement sont liées les unes aux autres sur au moins toutes les parties de leur surfaces correspondant à chacun des messages de sorte qu'en cas de tentative de séparation desdites feuilles les messages soient en partie au moins altérés.According to another characteristic of the invention, at least some of the constituent sheets of the stack are linked to each other. For the purposes of the invention, it should be understood that the constituent sheets of the stack are connected to each other on at least all the parts of their surfaces corresponding to each of the messages, so that in the event of an attempt to separation of said sheets the messages are at least partly altered.
Selon l'invention la liaison des feuilles constitutives de l'élément sécurité peut être réalisée de toute manière appropriée, notamment par laminage. Selon une caractéristique de l'invention, l'élément de sécurité comprend au moins une couche d'adhésif disposée au moins entre deux feuilles constitutives de l'empilement.According to the invention the connection of the constituent sheets of the security element can be carried out in any appropriate manner, in particular by rolling. According to one characteristic of the invention, the security element comprises at least one layer of adhesive disposed at least between two constituent sheets of the stack.
Selon une caractéristique de l'invention, l'élément de sécurité comprend sur la face recto de la première feuille et/ou sur la face verso de la dernière feuille une couche de protection au moins partiellement transparente. Une telle couche de protection transparente réalisée de toute manière appropriée et par exemple formée par une couche de colle ou de vernis.According to a feature of the invention, the security element comprises on the front face of the first sheet and / or on the back side of the last sheet a protective layer at least partially transparent. Such a transparent protective layer made in any appropriate manner and for example formed by a layer of glue or varnish.
Selon une caractéristique de l'invention, l'une au moins des couches de motif est formée par impression.According to one characteristic of the invention, at least one of the pattern layers is formed by printing.
L'invention concerne également un document de sécurité incluant un élément de sécurité conforme à l'invention et formant par exemple un passeport, une carte d'identité, un permis de conduire, une carte à jouer ou à collectionner interactive, un moyen de paiement, notamment une carte de paiement, un billet de banque, un bon d'achat ou un voucher, une étiquette sécurisée, une carte de transport, une carte de fidélité, une carte de prestation, une carte d'abonnement ou un moyen de paiement spécifique tel d'un jeton ou une plaquette notamment utilisés dans les casinos.The invention also relates to a security document including a security element according to the invention and forming for example a passport, an identity card, a driving license, a playing card or interactive collector, a means of payment, including a credit card, bank note, purchase order or voucher, secure label, transport card, loyalty card, service card, membership card or specific payment method such as a token or a wafer especially used in casinos.
Bien entendu, les différentes caractéristiques, variantes et formes de réalisation de l'invention peuvent être associées les unes avec les autres selon diverses combinaisons dans la mesure où elles ne sont pas incompatibles ou exclusives les unes des autres.Of course, the various features, variations and embodiments of the invention may be associated with each other in various combinations to the extent that they are not incompatible or exclusive of each other.
Par ailleurs, diverses autres caractéristiques de l'invention ressortent de la description annexée effectuée en référence aux dessins qui illustrent des formes non limitatives de réalisation d'un élément de sécurité conforme à l'invention.
- La
figure 1 est une coupe schématique d'une première forme de réalisation d'un élément de sécurité selon l'invention. - La
figure 2 est une vue montrant trois messages différents visualisables selon trois conditions d'observations et/ou d'illumination différentes de l'élément de sécurité illustréfigure 1 . - La
figure 3 montre différents messages et couches d'encre constitutifs de l'élément de sécurité illustré à lafigure 1 . - Les
figures 4 à 9 sont des coupes analogues à lafigure 1 montrant différentes variantes de réalisation de l'élément de sécurité selon l'invention.
- The
figure 1 is a schematic section of a first embodiment of a security element according to the invention. - The
figure 2 is a view showing three different messages viewable according to three different observation and / or illumination conditions of the illustrated security elementfigure 1 . - The
figure 3 shows different messages and ink layers constituting the security element illustrated in thefigure 1 . - The
Figures 4 to 9 are similar cuts to thefigure 1 showing different embodiments of the security element according to the invention.
Selon un premier exemple de réalisation, un élément de sécurité conforme à l'invention, tel qu'illustré à la
Afin de permettre ces visualisations séparées des trois messages M1, M2, M3, l'élément de sécurité 1 comprend un empilement d'une première feuille au moins partiellement semi-réfléchissante 2, et une feuille intermédiaire en partie au moins transparente 3 et une dernière feuille au moins partiellement semi-réfléchissante 4.In order to allow these separate visualizations of the three messages M1, M2, M3, the security element 1 comprises a stack of a first at least partially
Selon l'exemple illustré, la première feuille 2 est formée par une feuille 2' au moins partiellement translucide, dans le cas présent transparente, sur laquelle est appliquée une première couche 2" au moins partiellement semi-réfléchissante comprenant un dépôt métallique tel qu'un dépôt d'aluminium. Selon l'exemple illustré, la première couche 2" est orientée vers la face recto R de l'élément de sécurité 1. Par convention, la face de chaque feuille, constitutive de l'empilement formant l'élément de sécurité 1, orientée vers la face recto R de l'élément de sécurité 1 sera désignée en tant que face recto de ladite feuille tandis que la face opposée de cette dernière sera désignée en tant que face verso. Ainsi dans le cas présent la première couche 2" au moins partiellement semi réfléchissante forme la face recto de la première feuille 2.According to the illustrated example, the
Selon l'exemple illustré la dernière feuille semi-réfléchissante 4 est formée par une feuille transparente 4' au moins partiellement translucide, dans le cas présent transparente, sur le verso de laquelle est appliqué une deuxième couche 4" au moins partiellement semi réfléchissante comprenant, dans le cas présent, au moins un dépôt métallique tel qu'un dépôt d'aluminium.According to the illustrated example, the last semi-reflecting sheet 4 is formed by a transparent sheet 4 'at least partially translucent, in this case transparent, on the back of which is applied a second layer 4 "at least partially semi-reflective including, in this case, at least one metal deposit such as an aluminum deposit.
Les première et deuxième couches au moins partiellement réfléchissantes 2" et 4" présentent de manière préférée une densité optique comprise entre 0,2 et 1 de manière que les feuilles au moins partiellement semi-réfléchissantes 2 et 4 correspondantes présentent une transmitance comprise entre 10% et 65 % et de préférence de l'ordre de 40%.The first and second at least partially
La fabrication de l'élément de sécurité 1 à partir de la première feuille 2, de la feuille intermédiaire 3 et de la dernière feuille 4 est effectuée de la manière suivante.The manufacture of the security element 1 from the
Le premier message M1 est formé sur la face recto R de la première feuille 2, dans le cas présent la face portant la première couche 2", par l'application ou l'impression d'au moins une première couche de motif 5 comprenant moins une encre. Cette première couche de motif 5 est réalisée de manière à reproduire les motifs du premier message M1 tel qu'illustré à la
De la même manière, le troisième message M3 est formé sur la face verso de la dernière feuille 4, dans le cas présent la face portant la deuxième couche au moins partiellement réfléchissante 4", par l'application ou l'impression d'au moins une deuxième couche de motif 6 comprenant au moins une encre. Cette deuxième couche de motif 6 est réalisée de manière à reproduire les motifs du troisième message M3 tel qu'illustré à la
Selon l'exemple illustré, l'élément de sécurité 1 comprend un message M1', illustrée en
Dans le cas présent les messages complémentaires M1' et M3' ainsi que le deuxième message M2, sont formés par au moins une couche de motif 7 comprenant au moins une encre qui est appliquée ou imprimée sur la face recto de la feuille intermédiaire 3. Ainsi, la couche de motif 7 forme la combinaison des messages complémentaires M1', M3' et du message M2 comme le montre la
Les trois feuilles 2, 3 ,4 ainsi imprimées sont ensuite laminées ensemble avec interposition, d'une part, d'une couche 8 de colle transparente entre la première feuille 2 et la feuille intermédiaire 3 et, d'autre part, d'une couche 9 de colle transparente entre la feuille intermédiaire 3 et la dernière feuille 4. Ce laminage est réalisé de manière à assurer la coïncidence, d'une part, des motifs du premier message M1 avec les motifs de son message complémentaire M1' et, d'autre part, des motifs du troisième message M3 avec les motifs de son message complémentaire M3'. La colle ou adhésif mis en oeuvre peut être de toute nature appropriée. Afin de faire obstacle à toute tentative de déconstruction de l'élément de sécurité selon l'invention, la force de cohésion de la colle est de préférence supérieure à la cohérence des feuilles 2, 3, 4 ainsi qu'à celle des couches de motif 5, 6, 7.The three
Par ailleurs, selon l'exemple illustré les faces recto R et verso V sont recouvertes chacune d'une couche, respectivement 10 et 11, de protection transparente, par exemple une couche de colle ou de vernis, qui protège les couches d'encre 5 et 6 correspondantes et permet l'adhésion de l'élément de sécurité sur le document. De telles couches de protection transparentes sont facultatives et l'élément de sécurité 1 selon l'invention peut ne pas en comporter ou n'en comporter que sur l'une de ses faces.Furthermore, according to the example illustrated, the front faces R and verso V are each covered with a layer, respectively 10 and 11, transparent protection, for example a layer of glue or varnish, which protects the layers of ink 5 and 6 corresponding and allows the adhesion of the security element on the document. Such transparent protective layers are optional and the security element 1 according to the invention may not comprise or include on one of its faces.
La
La
La
La
Selon cette variante de réalisation, le premier message M1 est visible, à partir de la face recto R, en réflexion lors de l'éclairage de la face recto R de l'élément de sécurité 1 au moyen d'une lumière L1 non polarisée. En revanche, le deuxième message M2 est visible, à partir de la face recto R, en réflexion lors de l'éclairage et de la visualisation de la face recto R au travers d'un polariseur circulaire 22.According to this embodiment, the first message M1 is visible, from the front face R, in reflection during the illumination of the front face R of the security element 1 by means of a non-polarized light L1. On the other hand, the second message M2 is visible, from the front face R, in reflection during the illumination and the visualization of the front face R through a circular polarizer 22.
Afin d'obtenir cet effet d'extinction du premier message M1, le polariseur circulaire 22 comprend un polariseur linéaire 23 situé du côté de la source de lumière et une lame quart d'onde 24 située du côté de l'élément de sécurité 1. Le polariseur linéaire 23 possède la propriété de laisser passer la lumière présentant une polarisation parallèle à la sienne et de bloquer la lumière perpendiculaire à son axe de polarisation, et atténue les autres. La lame quart d'onde 24 possède la propriété de transformer une lumière polarisée linéairement en une lumière de polarisation circulaire et inversement de transformer une lumière de polarisation circulaire en une lumière de polarisation linéaire. Ainsi, la lumière ayant traversé le polariseur 22 sera une lumière incidente L2' possédant une polarisation circulaire dans un sens donné. La lumière véhiculant le premier message M1 résultera d'une unique réflexion sur la première couche au moins partiellement semi-réfléchissante 2" de sorte qu'elle possédera une polarisation circulaire d'un sens inverse à la lumière incidente L2'. En revanche la lumière véhiculant le deuxième message M2, obtenue par réflexion sur la dernière feuille 20 en papier, se retrouve non polarisée, c'est-à-dire que toutes les polarisations y sont présentes, et sera alors atténuée mais pas arrêtée par le polariseur circulaire 22 autorisant ainsi la visualisation du deuxième message M2.In order to obtain this extinction effect of the first message M1, the circular polarizer 22 comprises a linear polarizer 23 situated on the side of the light source and a quarter-wave plate 24 located on the side of the security element 1. The linear polarizer 23 has the property of letting the light having a polarization parallel to its own and block the light perpendicular to its axis of polarization, and attenuates the others. The quarter-wave plate 24 has the property of transforming a linearly polarized light into a circular polarization light and conversely to transform a circular polarization light into a linear polarization light. Thus, the light having passed through the polarizer 22 will be an incident light L2 'having a circular polarization in a given direction. The light conveying the first message M1 will result from a single reflection on the at least partially semi-reflective
La
Le premier message M1 est visible, à partir de la face recto R, en réflexion lors de l'éclairage de la face recto R de l'élément de sécurité 1 au moyen d'une lumière L1 blanche ou de la lumière du jour.The first message M1 is visible, from the front face R, in reflection during the illumination of the front face R of the security element 1 by means of a white light L1 or daylight.
Le deuxième message M2 est lui visible, à partir de la face recto R, lors de l'éclairage de la face recto R par une lumière ultra-violet UV qui excite les pigments fluorescents de la couche 26 qui émettent alors un rayonnement lumineux visible à l'arrière de la couche d'encre 21.The second message M2 is visible to it, from the front face R, during the illumination of the front face R by a UV ultraviolet light which excites the fluorescent pigments of the layer 26 which then emit visible light radiation at the back of the ink layer 21.
Ainsi, le deuxième message M2 est visible, d'une part, en transmission à partir de la face verso V en éclairage naturel et, d'autre part, en réflexion à partir de la face recto R en éclairage UV.Thus, the second message M2 is visible, on the one hand, in transmission from the back side V in natural lighting and, on the other hand, in reflection from the front face R in UV illumination.
Les variantes de réalisation décrites en relation avec les
La
Selon les exemples décrits précédemment le message complémentaire M1' et/ou M3' ainsi que le deuxième message M2 sont formés par une même couche de motif. Toutefois, le message complémentaire M1' et/ou M3' ainsi que le deuxième message M2 peuvent aussi être formés par plusieurs couches de motif pouvant, par exemple, être situées sur des faces distinctes de feuilles de l'empilement.According to the examples described above the complementary message M1 'and / or M3' and the second message M2 are formed by the same pattern layer. However, the complementary message M1 'and / or M3' as well as the second message M2 may also be formed by several pattern layers which may, for example, be located on distinct faces of sheets of the stack.
L'élément de sécurité 1 selon l'invention peut être incorporé ou incluant dans un document de sécurité, qu'un passeport, une carte d'identité, un permis de conduire, une carte à jouer ou à collectionner interactive, un moyen de paiement, notamment une carte de paiement, un billet de banque, un bon d'achat ou un voucher, une carte de transport, une carte de fidélité, une carte de prestation ou une carte d'abonnement.The security element 1 according to the invention can be incorporated or included in a security document, a passport, an identity card, a driving license, a playing card or interactive collector, a means of payment including a credit card, bank note, voucher, voucher, transport card, loyalty card, service card or membership card.
Un document de sécurité ainsi obtenu comporte donc au moins un élément de sécurité 1 tel que décrit ci-dessus. Il peut toutefois comporter d'autres éléments de sécurité « de premier niveau » et/ou au moins un élément de sécurité dit « de deuxième niveau » et/ou « de troisième niveau ».A security document thus obtained therefore comprises at least one security element 1 as described above. However, it may include other "first level" security elements and / or at least one so-called "second level" and / or "third level" security element.
Le document peut en particulier comporter les éléments de sécurité suivants seuls ou en combinaison :
- des colorants et/ou des pigments luminescents et/ou des pigments interférentiels et/ou des pigments à cristaux liquides, notamment sous forme imprimée ou mélangée à au moins une couche constitutive du document,
- des composants, colorants et/ou des pigments photochromes ou thermochromes, notamment sous forme imprimée ou mélangée à au moins une couche constitutive du document,
- un absorbeur ultraviolet (UV), notamment sous forme enduite ou mélangée à au moins une couche constitutive du document,
- un matériau spécifique collecteur de lumière, par exemple du type « guide d'ondes », par exemple un matériau collecteur de lumière luminescent comme les films polymères à base de polycarbonate commercialisés par la société BAYER sous la dénomination LISA®,
- un film multicouche interférentiel,
- une structure ou une couche à effets optiques variables à base de pigments interférentiels ou de cristaux liquides,
- une couche biréfringente ou polarisante,
- une structure de diffraction,
- une image embossée,
- des moyens produisant un "effet de moiré", un tel effet pouvant par exemple faire apparaître un motif produit par la superposition de deux éléments de sécurité sur le document, par exemple par le rapprochement de lignes de deux éléments de sécurité,
- un élément réfractif partiellement réfléchissant,
- une grille lenticulaire transparente,
- une lentille, par exemple une loupe,
- un filtre coloré.
- un autre foil métallisé, goniochromatique ou holographique,
- une couche à effet optique variable à base de pigments interférentiels ou de cristaux liquides,
- un élément de sécurité plat et de format relativement petit tel qu'une planchette, visible ou non visible, notamment luminescent, avec ou sans dispositif électronique,
- des particules ou agglomérats de particules de pigments ou colorants de type HI-LITE, visibles ou non visibles, notamment luminescents,
- des fibres de sécurité, notamment métalliques, magnétiques (à magnétisme doux et/ou dur), ou absorbantes, ou excitables aux ultraviolets, le visible ou l'infrarouge, et en particulier le proche infrarouge (NIR),
- une sécurité lisible automatiquement ayant des caractéristiques spécifiques et mesurables de luminescence (par exemple fluorescence, phosphorescence), d'absorption de la lumière (par exemple ultraviolet, visible ou infrarouge), d'activité Raman, de magnétisme, d'interaction micro-ondes, d'interaction aux rayons X ou de conductivité électrique,
- des réactifs d'infalsification, par exemple du dipyridyle avec des ions ferriques qui, lors d'une tentative de falsification par un réducteur, sont réduits en ions ferreux et font apparaître une couleur rouge,
- un réactif tel que de l'iodate de potassium susceptible de former une marque visible et colorée lors d'une tentative de falsification.
- un ou plusieurs éléments de sécurité tels que définis plus haut peuvent être présents dans le document et/ou dans une ou plusieurs couches constitutives du document ou dans un ou plusieurs éléments de sécurité incorporés au document et/ou à une ou plusieurs couches constitutives du document, comme par exemple un fil de sécurité, une fibre ou une planchette.
- dyes and / or luminescent pigments and / or interferential pigments and / or liquid crystal pigments, in particular in printed form or mixed with at least one constituent layer of the document,
- components, dyes and / or photochromic or thermochromic pigments, in particular in printed form or mixed with at least one constituent layer of the document,
- an ultraviolet (UV) absorber, especially in the form coated or mixed with at least one constituent layer of the document,
- a specific light-collecting material, for example of the "waveguide" type, for example a luminescent light-collecting material such as the polycarbonate-based polymer films marketed by Bayer under the name LISA®,
- a multilayer interference film,
- a structure or layer with variable optical effects based on interferential pigments or liquid crystals,
- a birefringent or polarizing layer,
- a diffraction structure,
- an embossed image,
- means producing a "moiré effect", such an effect being able for example to reveal a pattern produced by the superimposition of two security elements on the document, for example by bringing lines of two security elements together,
- a partially reflective refractive element,
- a transparent lenticular grid,
- a lens, for example a magnifying glass,
- a colored filter.
- another foil metallized, goniochromatic or holographic,
- a layer with a variable optical effect based on interferential pigments or on liquid crystals,
- a flat and relatively small security element such as a board, visible or non-visible, in particular luminescent, with or without an electronic device,
- particles or agglomerates of pigment particles or dyes of the HI-LITE type, visible or non-visible, in particular luminescent,
- security fibers, in particular metallic, magnetic (with soft magnetism and / or hard), or absorbing, or excitable with ultraviolet, the visible or the infrared, and in particular the near infrared (NIR),
- an automatically readable security having specific and measurable luminescence characteristics (eg fluorescence, phosphorescence), light absorption (eg ultraviolet, visible or infrared), Raman activity, magnetism, microwave interaction , X-ray interaction or electrical conductivity,
- infalsification reagents, for example dipyridyl with ferric ions which, when an attempt is made to falsify with a reducing agent, are reduced to ferrous ions and give rise to a red color,
- a reagent such as potassium iodate may form a visible mark and colored during an attempted forgery.
- one or more security elements as defined above may be present in the document and / or in one or more constituent layers of the document or in one or more security elements incorporated in the document and / or in one or more layers constituting the document , such as a safety wire, a fiber or a board.
Bien entendu, diverses autres modifications ou variantes peuvent être envisagées dans le cadre des revendications annexées.Of course, various other modifications or variations may be contemplated within the scope of the appended claims.
Claims (18)
- Security element adapted to reveal at least two distinct messages (M1, M2) depending on at least two different observation conditions, comprising,
firstly, a stack consisting of at least:- a first at least partially translucent sheet (2'),- and a final sheet (4', 20)and, secondly:- on the front face of the first sheet (2'), at least a first message (M1) formed by at least one pattern layer (5),- between the first sheet (2') and the final sheet (4', 20), at least a second message (M2) formed by at least one pattern layer (7, 21),- between the front (R) of the first sheet, inclusive, and the back, inclusive, of the final sheet (4', 20), at least a first at least partially semi-reflective layer (2"),the first message being visible under first observation conditions and the second message being visible under second observation conditions different from the first observation conditions. - Security element according to claim 1, characterised in that the first sheet is an at least partially semi-reflective sheet (2).
- Security element according to claim 1 or claim 2, characterised in that the pattern layer forming the first message (M1) is situated on or against the first at least partially semi-reflective layer (2").
- Security element according to one of claims 1 to 3, characterised in that it comprises between the first sheet (2') and the final sheet (4', 20) a message (M1') complementary to the first message (M1) formed by at least one pattern layer (7), the complementary message (M1') preferably corresponding to the negative of the first message (M1) such that the first message (M1) and its complementary message (M1') are not visible in transmitted light.
- Security element according to one of the preceding claims, characterised in that it comprises between the second message (M2) and the final sheet (4', 20) at least one layer (26) of a material comprising fluorescent pigments that can be excited by ultraviolet radiation.
- Security element according to one of the preceding claims, characterised in that the final sheet (4', 20) is at least partially translucent, preferably with at least a second at least partially semi-reflective layer (4") between the back, inclusive, of the first sheet (2') and the back, inclusive, of the final sheet (4'), and when the element comprises between the back, inclusive, of the first sheet (2') and the back, inclusive, of the final sheet (4') at least a second at least partially semi-reflective layer (4"), the final sheet (4') is preferably at least partially semi-reflective.
- Security element according to one of the preceding claims, characterised in that at least one at least partially semi-reflective layer comprises a metal coating of a material selected from the group consisting of the following materials:- aluminium,- silver,- copper,- gold,- nickel,- oxides, mixtures or alloys of one or more of these materials.
- Security element according to one of the preceding claims, characterised in that at least one at least partially semi-reflective layer has zones having different light transmission coefficients.
- Security element according to one of the preceding claims, characterised in that it comprises between the front, inclusive, of the first sheet (2') and the back, inclusive, of the final sheet (4') at least one layer (30) of a material having a high refractive index and the layer having a high refractive index preferably comprises a coating of a material selected from the group consisting of the following materials:- titanium dioxide,- zinc sulphide,- transparent inorganic compound having a refractive index greater than 2,the layer having a high refractive index preferably having zones having different refractive indices.
- Security element according to one of the preceding claims, characterised in that it comprises between the back, inclusive, of the first sheet (2') and the front, inclusive, of the final sheet (4') at least one partially opaque layer, the partially opaque layer preferably comprising a metal coating.
- Security element according to one of the preceding claims, characterised in that it comprises on the back face of the final sheet (4', 20) at least a third message (M3) formed by at least one pattern layer (6), the third message (M3) being visible under third observation conditions different from the first and second observation conditions, and preferably comprises between the first sheet (2') and the final sheet (4', 20) a message (M3') complementary to the third message (M3) and formed by at least one pattern layer (7).
- Security element according to one of the preceding claims, characterised in that it comprises between the first sheet (2') and the final sheet (4', 20) an at least in part transparent intermediate sheet (3) comprising a message (M1') complementary to the first message (M1) and/or a message (M3') complementary to the third message (M3) and/or a second message (M2).
- Security element according to one of the preceding claims, characterised in that it comprises between the first sheet (2') and the final sheet (4', 20) a layer (14) comprising at least one hologram.
- Security element according to one of the preceding claims, characterised in that it comprises between the first sheet (2'), inclusive, and the final sheet (4', 20), inclusive, a transparent layer (16) containing oriented reflective flakes.
- Security element according to one of the preceding claims, characterised in that at least some of the sheets (2', 3, 4') forming the stack are joined together, in particular by at least one layer of adhesive disposed between at least two sheets forming the stack.
- Security element according to one of the preceding claims, characterised in that it comprises on the front face of the first sheet (2') and/or on the back face of the final sheet (4', 20) an at least partially transparent protective layer (10).
- Security element according to one of the preceding claims, characterised in that at least one of the pattern layers is formed by printing.
- Security document including the security element according to one of claims 1 to 17, such as, e.g. a passport, an identity card, a driving licence, an interactive playing or trading card, a means of payment, in particular a payment card, a banknote, a gift card or a voucher, a secure label, a travel card, a loyalty card, a benefit card, a membership card or a specific means of payment, such as a token or a chip, in particular used in casinos.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1356063A FR3007321B1 (en) | 2013-06-25 | 2013-06-25 | SECURITY ELEMENT ADAPTED TO REVEAL AT LEAST TWO DISTINCT MESSAGES ACCORDING TO AT LEAST TWO DIFFERENT OBSERVATION CONDITIONS AND DOCUMENT INCORPORATING SUCH A SAFETY ELEMENT |
PCT/IB2014/062565 WO2014207659A1 (en) | 2013-06-25 | 2014-06-24 | Security element and document incorporating such a security element |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3013597A1 EP3013597A1 (en) | 2016-05-04 |
EP3013597B1 true EP3013597B1 (en) | 2018-04-04 |
Family
ID=49474560
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14741399.1A Active EP3013597B1 (en) | 2013-06-25 | 2014-06-24 | Security element and document incorporating such a security element |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3013597B1 (en) |
FR (1) | FR3007321B1 (en) |
WO (1) | WO2014207659A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11120711B2 (en) * | 2017-08-30 | 2021-09-14 | Mimaki Engineering Co., Ltd. | Multilayered printed matter and multilayer printing method |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8912750D0 (en) * | 1989-06-02 | 1989-07-19 | Portals Ltd | Security paper |
GB2338680B (en) * | 1998-06-25 | 2000-05-17 | Rue De Int Ltd | Improvementd in security documents and subtrates therefor |
EP1669213A1 (en) | 2004-12-09 | 2006-06-14 | Sicpa Holding S.A. | Security element having a viewing-angle dependent aspect |
SI1674286T1 (en) | 2004-12-23 | 2011-06-30 | Arjowiggins Security | Security element having a digitised mark and security support or document comprising same |
-
2013
- 2013-06-25 FR FR1356063A patent/FR3007321B1/en not_active Expired - Fee Related
-
2014
- 2014-06-24 WO PCT/IB2014/062565 patent/WO2014207659A1/en active Application Filing
- 2014-06-24 EP EP14741399.1A patent/EP3013597B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
FR3007321A1 (en) | 2014-12-26 |
WO2014207659A1 (en) | 2014-12-31 |
FR3007321B1 (en) | 2015-07-24 |
EP3013597A1 (en) | 2016-05-04 |
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