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EP3418065A1 - Élément microoptique à changement de couleur - Google Patents

Élément microoptique à changement de couleur Download PDF

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Publication number
EP3418065A1
EP3418065A1 EP18000519.1A EP18000519A EP3418065A1 EP 3418065 A1 EP3418065 A1 EP 3418065A1 EP 18000519 A EP18000519 A EP 18000519A EP 3418065 A1 EP3418065 A1 EP 3418065A1
Authority
EP
European Patent Office
Prior art keywords
layer
micro
optic
layer arrangement
arrangement 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.)
Granted
Application number
EP18000519.1A
Other languages
German (de)
English (en)
Other versions
EP3418065B1 (fr
Inventor
Martin Imhof
Günter Endres
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient ePayments GmbH
Original Assignee
Giesecke and Devrient Mobile Security GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Giesecke and Devrient Mobile Security GmbH filed Critical Giesecke and Devrient Mobile Security GmbH
Publication of EP3418065A1 publication Critical patent/EP3418065A1/fr
Application granted granted Critical
Publication of EP3418065B1 publication Critical patent/EP3418065B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/23—Identity cards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D13/00—Loose leaves modified for binding; Inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/324—Reliefs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/328—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
    • B42D25/342—Moiré effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/455—Associating two or more layers using heat
    • 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
    • B42D25/46—Associating two or more layers using pressure
    • 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
    • B42D25/48—Controlling the manufacturing process
    • B42D25/485—Controlling the manufacturing process by electronic processing means

Definitions

  • the present invention is directed to a layer assembly for producing a security feature for use in a value document.
  • the present application is further directed to the value document per se as well as to a method for providing a layer arrangement or a method for providing the value document and a correspondingly configured device.
  • the present invention is directed to a computer program product having control instructions that perform the method when executed on a computer or operating the proposed device.
  • WO 2013/086167 A1 shows a method for providing a relief microstructure with an optically variable image.
  • DE 10 2015 006 854 A1 shows a device for applying security elements on a value document substrate.
  • the security element comprises a film element, which leads to self-supporting properties of the security element. This is commonly referred to as L-lead. If a security element has no film element which leads to self-supporting properties of the security element, this is generally also referred to as a T-lead.
  • a layer arrangement for producing a security feature for use in value documents comprising an information layer for personalization of the layer arrangement, a micro-optic layer comprising micro-optical elements which realize a color change depending on the viewing angle, a reflector layer which, in cooperation with at least the micro-optic layer, triggers a light reflection, wherein a laminatable cover layer is provided and the micro-optic layer is laminated within the layer arrangement.
  • the proposed layer arrangement is used, for example, in the production of a value document, in which case individual layers are provided and laminated together in further method steps.
  • the proposed value document or the proposed layer arrangement is a lamination composite having individual layers which are connected by means of hot lamination.
  • the proposed value document is a chip card or an identity document.
  • the present invention can particularly preferably also be used for pass pages, labels and labels.
  • a laminated layer arrangement or a laminated value document is proposed.
  • the present invention is not limited to a security feature, but rather, those skilled in the art will recognize that such an advantageous arrangement also provides an aesthetic effect, but is not a preferred embodiment. Rather, the following is based on the technical effect of the security feature, since the layer arrangement according to the invention is a unique selling point, which can be recognized by the unaided eye, ie without technical devices, and is therefore particularly advantageous because corresponding layers, in particular the reflector layer and the micro-optic layer, are protected against abrasion, and further according to the invention it is possible to bring about a color-true color change by means of a laminated cover layer, in contrast to a lacquer layer. Thus, it is thus avoided according to the invention that an unsuitable lacquer layer is used, but rather a laminatable cover layer is used as the protective layer.
  • the information layer for personalization of the layer arrangement may be a printed layer which is arranged, for example, on the cover layer. In this case, it is possible to arrange the information layer on the upper or the lower side of the cover layer. As a result, the layer arrangement can be personalized in such a way that the information layer is applied in accordance with a specific print pattern, or else that the information layer is applied flat and is then at least partially removed. Such removal may u. a. done by means of a laser.
  • the micro-optic layer has micro-optical elements which cause a color change depending on the viewing angle.
  • the micro-optic layer is arranged within the layer arrangement in such a way that, from the viewpoint of a viewer, only transparent layers are located between the viewer and the micro-optic layer, since otherwise the micro-optic layer would be covered. In this case, it is possible to partially obscure the micro-optic layer, whereby a suitable surface always remains uncovered, in such a way that the observer can recognize a color change.
  • the micro-optic layer is designed such that it has a certain color at a light incidence, and, if the viewer changes its position with respect to the layer arrangement, another color is formed optically.
  • microlenses may be used as micro-optical elements or micromirror arrays or the like. Also, different micro-optical elements can be combined.
  • a reflector layer is a layer which triggers a light reflection when light is incident.
  • the reflector layer it is possible for the reflector layer to interact with the microoptical layer in such a way that a specific optical effect occurs, such that, for example, a hologram with a color change is recognizable. Again, it is possible to partially remove the reflector layer, so that in turn adjusts another security feature or a personalization feature.
  • a laminable cover layer which is preferably transparent or at least semi-transparent.
  • This cover layer acts as a protective layer and protects, for example, the micro-optic layer from abrasions.
  • the cover layer can be configured in such a way that a color-true security feature, for example the microoptical elements, remains visible.
  • a lacquer layer has been conventionally used, which provides only a low protection against abrasion and is also clouded. It has thus been recognized according to the invention that a corresponding arrangement can also be provided by means of lamination, and that the cover layer, as a laminable covering layer, provides a beneficial technical effect which constitutes a contribution to the lacquer layer.
  • the micro-optic layer is laminated within the layer arrangement, which is why it is particularly protected against abrasion.
  • the present invention is not limited to abrasion, but rather is realized according to the invention that the micro-optic layer and possibly other layers, such as the reflector layer, are protected from physical force.
  • a viewing angle can not be varied merely by the observer changing his point of view with respect to the layer arrangement, but rather such a viewing angle change is also possible by moving the map or the layer arrangement per se relative to the viewer.
  • the information layer is present as a coating of the cover layer.
  • This has the advantage that the information layer can be applied to at least one side of the cover layer, wherein the cover layer is preferably transparent.
  • the cover layer is preferably transparent.
  • it is possible to provide a further personalization feature which cooperates particularly advantageously with the cover layer. If, for example, the information layer is arranged over the cover layer, then this can be partially removed, for example, and personalization can be created in this case. If the information layer is below the cover layer, the information layer is protected by the cover layer. In particular, it is possible in this case to combine the information layer with further features which allow personalization.
  • the information layer is present as a print layer.
  • This has the advantage that any logo can be attached to the layer arrangement or in the layer arrangement.
  • the information layer can be provided by means of simple technical means.
  • the micro-optic layer is present as an embossing lacquer layer.
  • the micro-optic layer can be produced by means of known methods, which are used particularly advantageously in the context of the present invention.
  • it is possible to design the micro-optical elements by means of the embossing lacquer layer particularly advantageous.
  • the micro-optic layer has at least one micromirror array, a Fresnel lens and / or a microfresnel lens.
  • the micro-optic layer can be configured particularly advantageously, since a multiplicity of optical effects is possible by means of the proposed micro-optical elements.
  • these proposed micro-optical elements are suitable to provide a viewing angle-dependent color change, wherein the micro-optic layer and / or at least one further layer can be colored. This results in a particularly appealing visual effect, which can also be used as a security function.
  • the reflector layer is present as a screen printing and / or a mirror-gloss film.
  • This has the advantage that the reflector layer can be introduced into the layer arrangement with simple technical means and, for example, an underlying substrate which, for example, forms a card body, can be provided with the reflector layer in a simple manner.
  • special optical effects may result from the reflector layer at least partially through the micro-optic layer and the cover layer shining or incident light, which is passed through the cover layer, the information layer and the micro-optic layer on the reflector layer, is reflected and accordingly a light reflection or causes a light reflection.
  • the light is reflected back through the micro-optic layer, the information layer and the cover layer so that in this case an optical technical effect is created, which is supplemented by means of the viewing angle-dependent color change through the micro-optic layer.
  • a layer sequence provides that the micro-optic layer is arranged between the reflector layer and the cover layer.
  • This has the advantage that the micro-optic layer is protected in the interior of the layer arrangement and thus abrasion or mechanical action on the micro-optic layer is weakened or prevented.
  • the cover layer is made transparent such that incident light impinges on the microoptical layer and is reflected there in the form of a viewing angle-dependent color change. The reflection of the light can be accomplished by the micro-optic layer and / or the reflector layer.
  • the reflector layer and / or the micro-optic layer is partially removed.
  • a partial removal may, for example, be a laser or, in general, a demetallization.
  • the reflector layer and / or the micro-optic layer is laser engraved, e.g. in the form of a laser inscription or laser demetallization, on.
  • This has the advantage that parts of the individual layers can be removed in a particularly advantageous manner and thus an arbitrary pattern is established, which in turn occurs as a security feature or as a personalization feature.
  • the layer arrangement is present as a laminate composite.
  • This has the advantage that the layer arrangement is laminated and thus deliberately no banknotes Instead, a laminate composite is created which does not rely on a lacquer layer as required by the prior art for sealing. Rather, the individual layer arrangements are connected in such a way that they are laminated and thus form either the value document or else a sub-layer arrangement such that further layers can be laminated onto this part of the value document in later method steps.
  • At least one layer is made transparent.
  • the cover layer can be designed to be transparent and so a protective layer can be laminated, which is substantially true to color.
  • a lacquer can be used in the interior of the layer structure or the layer arrangement, but the layer structure or the layer arrangement as such is laminated together.
  • a value document comprising a layer arrangement according to one of the described aspects.
  • This has the advantage that the layer arrangement can function directly as a value document, or else that further layers can be connected to the layer arrangement such that the value document is provided.
  • the value document is preferably a chipcard, a smartcard, a passport page, a label, a label or the like.
  • the object is also achieved by a method for providing a layer arrangement for producing a security feature for use in value documents, comprising providing an information layer for personalization of the layer arrangement, providing a microoptical layer comprising microoptical elements which realize a color change depending on the viewing angle, providing a reflector layer which in cooperation with at least the microoptical layer triggers a light reflection, providing a laminatable cover layer is and the micro-optic layer is laminated within the layer assembly.
  • the object is also achieved by means of a device which is designed analogously to the method and holds appropriate means for implementing the method steps.
  • the object is also achieved by a computer program product with control commands which carry out the proposed method when they are executed on a computer or operate the proposed device and thereby produce the proposed layer arrangement.
  • the computer program product also generates a print motif or laser motif to be printed, which is produced in a production step and then laminated.
  • the computer program product may include an input, e.g. of a picture, made possible by a user. Subsequently, the computer program product converts the image motif into a print motif. The print motif is then printed by digital printing on a carrier substrate. After printing the print motif, this is laminated.
  • the proposed layer arrangement can be produced by means of the proposed method or the proposed device.
  • the method has method steps which are suitable for simulating the structural features of the layer arrangement or of the value document.
  • the proposed device also has means which are suitable for providing the proposed layer arrangement or for carrying out the proposed method.
  • the proposed device and the proposed method can provide both the value document according to the invention and the layer arrangement according to the invention.
  • Fig. 1 shows an example of micro-optics, z.
  • the arrows from top to bottom show an incident light, which are reflected by the reflector such that they cause a different optical effect depending on the viewing direction.
  • Such devices are known and serve, for example, to bring about a viewing angle-dependent optical effect.
  • a so-called LEAD strip with microprisms or microlenses is shown. If this strip is now superimposed with a line pattern, as in the middle of the present Fig. 2 is shown, resulting in the overlay area, a so-called rotation effect, as shown on the right side. This creates a moire effect between the film and the background print. Thus, it comes to a viewing angle-dependent color change or a change of a pattern.
  • Fig. 3 shows a conventional arrangement on a banknote substrate, wherein above the banknote substrate, a glue coat is arranged, followed by a metallization, on which an embossing lacquer is applied. Above in the present Fig. 3 is a partially applied ink visible. This leads to local color changes by a micromirror. As an alternative to the embossing lacquer, it is also possible to use a transparent thermoplastically deformed polymer.
  • top and bottom which is based on a planar layer arrangement, as shown for example in the figures.
  • Fig. 4 shows a reaction wherein a cover sheet has an information layer.
  • This cover sheet is arranged at the top in the present figure, with only the partially applied ink remaining thereon.
  • a reflective coating is arranged, which is applied to the card body.
  • Fig. 5 shows a cover sheet with the information layer, the information layer is now mounted below the cover sheet, and not, as in Fig. 4 is shown above the cover sheet.
  • the information layer can be made of printing ink, for example.
  • the reflective coating or the reflector layer is present as a customizable screen-printed silver layer on a polycarbonate cover film. This saves a steaming and a washing step in the film production.
  • Fig. 6 shows an intermediate layer which has the information layer.
  • the cover sheet is arranged above and below the intermediate foil is arranged, which may have, for example, an adhesive coating.
  • the information layer is arranged such that it is printed on the intermediate film.
  • the reflector layer is shown on the card body, which may have a motif representation in silver.
  • Fig. 7 shows a micro-optic film together with the information layer and additional information in the reflector layer.
  • Fig. 8 shows a further implementation, wherein the cover sheet has the information layer.
  • a multicolor is given by at least one second color on silver or by two differently colored reflective layers.
  • Fig. 9 additionally shows a multicolor by a second color on silver or by two differently colored reflective layers. Above is in the present Fig. 9 shown a metal layer, which is subsequently personalized by means of a laser. This personalization takes place here by a demetallization.
  • the effect of the layers is a wandering single or multi-color Moire image on multicolored reflective silver.
  • Fig. 11 shows a combination laminate with two different types of foil patches or stamped foil elements, which are laminated together.
  • a so-called micromirror is arranged on the card body or a holographic element.
  • Fig. 12 shows a combination laminate in a smart card with a customer hologram patch, for example for a bank.
  • a customer hologram patch for example for a bank.
  • an optical surface enlargement of the security feature by the CDF standard film occurs.
  • a differentiation in color and design can thus be adapted cost-effectively, while the company logo or the brand name remains in the middle area.
  • Fig. 13 shows a multi-layer structure based on the cards or value documents described, wherein the multilayer structure can form a label or a label.
  • an upper 1 is shown, which may be a paper-based or a film-based upper.
  • a pressure-sensitive adhesive 2 is shown as well as a release coating 3 and a carrier material 4.
  • the upper material then contains the so-called CDF and a customizable overpressure or a laser-personalizable layer.
  • Fig. 14 shows a microlens sheet, which is mounted by lamination with reflective substrate.
  • the microlens film here consists of an embossing lacquer and a heat-seal lacquer or adhesive, abbreviated to HSL. This is only one aspect of the present invention, which is optional with respect to the further embodiments.
  • FIG. 12 is a schematic flow diagram illustrating a method for providing a layering arrangement for establishing a security feature for use in value documents, comprising providing an information layer for personalization of the layer arrangement, providing a microoptical layer comprising a microoptical element that realizes a color change depending on the viewing angle, providing a Reflector layer, which in cooperation with at least the micro-optic layer triggers a light reflection, wherein providing a 103 laminatable cover layer is provided and the micro-optic layer is laminated within the layer assembly.
  • the color change results from the interaction of information layer and microoptical layer and reflector layer.
  • the method steps can be carried out iteratively and / or in a different order or can have sub-steps.
  • the microoptical layers are protected in accordance with one aspect of the present invention and the information layer is scrubbed in an offset color is prevented.
  • highly transparent polymer layers there is no clouding and at the same time a much higher stability is achieved.
  • ID cards can be individualized, thus also resulting in the possibility to color or discolor the offset color of the laminated transparent CDF layers or to remove the underlying metallization.
  • Customizability via e.g. a metal layer above the CDF layer, which can be locally removed by laser, or via demetallization of the reflective coating.
  • such a "lamination CDF security element” based on a Fresnel-type micromirror foil which displays a different color impression at different viewing angles, can be offered in different segments without making new foil tools, e.g. One-color reverse for low budget, two-color reverse for medium-budget, multi-color (e.g., 3 colors in combination), motivational color change pumps and reverse for high budget.
  • foil tools e.g. One-color reverse for low budget, two-color reverse for medium-budget, multi-color (e.g., 3 colors in combination), motivational color change pumps and reverse for high budget.
  • patch-type application provides the possibility of applying the CDF in any desired shape, size and position within a card body.
  • a further advantage for the production results in accordance with an aspect of the present invention, through the combination of a personalisable one Universal CDF patch combined with serial / custom hologram patch that will be laminated together.
  • the added value with a CDF film can be further increased.
  • the film substrates above the reflector layer must at least in the area of the security feature be made partially transparent (window / punched etc. possible) or are preferably completely transparent substrate layers.
  • Printing methods for cards are, for example, offset or similar methods.
  • Printing processes for packaging and gift cards, value coupons include inkjet, laser toner, offset, etc.
  • the bonding of the layers e.g. by means of hot-melt adhesive or by adhering the polymer films takes place in accordance with an aspect of the present invention by heating above its glass point.
  • a simplified production of holograms by means of screen printing technology, without the complex process of the metallic vapor deposition of embossed structures, is thus provided according to one aspect of the present invention.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Holo Graphy (AREA)
EP18000519.1A 2017-06-19 2018-06-14 Élément microoptique à changement de couleur Active EP3418065B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102017005779.6A DE102017005779A1 (de) 2017-06-19 2017-06-19 Mikrooptisches Element mit Farbwechsel

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EP3418065A1 true EP3418065A1 (fr) 2018-12-26
EP3418065B1 EP3418065B1 (fr) 2021-11-10

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WO2020187286A1 (fr) * 2019-03-19 2020-09-24 中钞特种防伪科技有限公司 Élément anti-contrefaçon optique et produit anti-contrefaçon optique
CN112572016A (zh) * 2019-09-30 2021-03-30 中钞特种防伪科技有限公司 光学防伪元件及防伪产品
WO2021063213A1 (fr) * 2019-09-30 2021-04-08 中钞特种防伪科技有限公司 Élément anti-contrefaçon optique et produit anti-contrefaçon

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WO2020187286A1 (fr) * 2019-03-19 2020-09-24 中钞特种防伪科技有限公司 Élément anti-contrefaçon optique et produit anti-contrefaçon optique
CN112572016A (zh) * 2019-09-30 2021-03-30 中钞特种防伪科技有限公司 光学防伪元件及防伪产品
WO2021063213A1 (fr) * 2019-09-30 2021-04-08 中钞特种防伪科技有限公司 Élément anti-contrefaçon optique et produit anti-contrefaçon
CN112572016B (zh) * 2019-09-30 2022-05-24 中钞特种防伪科技有限公司 光学防伪元件及防伪产品

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