EP3418065B1 - Élément microoptique à changement de couleur - Google Patents

Élément microoptique à changement de couleur Download PDF

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Publication number
EP3418065B1
EP3418065B1 EP18000519.1A EP18000519A EP3418065B1 EP 3418065 B1 EP3418065 B1 EP 3418065B1 EP 18000519 A EP18000519 A EP 18000519A EP 3418065 B1 EP3418065 B1 EP 3418065B1
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EP
European Patent Office
Prior art keywords
layer
micro
optic
supplying
reflector
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.)
Active
Application number
EP18000519.1A
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German (de)
English (en)
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EP3418065A1 (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
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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
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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
    • B42D25/20—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 arrangement for producing a security feature for use in a value document.
  • the present application is also directed to the document of value per se, to a method for providing a layer arrangement and a correspondingly set up device.
  • the present invention is directed to a computer program product with control commands which execute the method when they are executed on a computer or when they operate 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 to a value document substrate.
  • WO 2013/139748 A1 discloses a layer arrangement according to the preamble of claim 1.
  • Colored Dynamic Foil CDF Using the well-known so-called Colored Dynamic Foil CDF, it has already been shown that by overprinting a micromirror film, viewing-angle-dependent colored and dynamic features can be generated which are visible to the human eye. It is also known to use silver inks with reflective properties, which are applied by means of screen printing or offset. It is also known in the context of the production of banknotes to provide a microlens array which has an optical Provides color effect that is both aesthetic and can be used as a security feature.
  • a Fresnel-like micromirror array with a constant repeat is functionalized with a line-like colored overprint. This creates dynamic movement effects, e.g. B. running effects, pumps or color changes.
  • the security element comprises a film element which leads to self-supporting properties of the security element. This is also commonly referred to as an L-lead. If a security element does not have a film element which leads to self-supporting properties of the security element, this is generally also referred to as a T-lead.
  • 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 process steps.
  • the proposed document of value or the proposed layer arrangement is thus a lamination composite which has individual layers which are connected by means of hot lamination.
  • the proposed value document is preferably a chip card or an identification document.
  • the person skilled in the art recognizes that the present invention can also be used with particular preference for passport pages, labels and tags.
  • a laminated layer arrangement or a laminated document of value is proposed.
  • the present invention is not limited to a security feature, but rather the person skilled in the art will recognize that such an advantageous arrangement also provides an aesthetic effect which, however, does not represent a preferred exemplary embodiment.
  • the layer arrangement according to the invention is a unique selling point that can be recognized by the unarmed eye, i.e. without technical devices, and is particularly advantageous because corresponding layers, in particular the reflector layer and the micro-optical layer, are protected from abrasion, and furthermore it according to the invention it is possible to use a laminated top layer, in contrast to a lacquer layer, to bring about a true-to-color color change.
  • a laminated top layer in contrast to a lacquer layer, to bring about a true-to-color color change.
  • an unsuitable lacquer layer is used, but rather a laminatable cover layer is used as the protective layer.
  • the information layer for personalizing the layer arrangement can be a printed layer which is arranged, for example, on the cover layer. It is possible here to arrange the information layer on the upper or the lower side of the cover layer.
  • 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 over a large area and is then at least partially removed.
  • Such removal can include done by means of a laser.
  • the micro-optical layer has micro-optical elements which bring about 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 point of view of a viewer, there are only transparent layers between the viewer and the micro-optic layer, since otherwise the micro-optic layer would be covered. It is possible here to partially cover the micro-optic layer, with a suitable surface always remaining uncovered in such a way that the viewer can see a change in color.
  • the micro-optic layer is designed in such a way that it has a certain color when light falls, and, if the viewer changes his position with respect to the layer arrangement, another color optically arises.
  • microlenses can be used as micro-optical elements or micromirror arrays or the like can be used. Different micro-optical elements can also be combined.
  • a reflector layer is a layer that triggers light reflection when light falls on it. It is possible here for the reflector layer to interact with the micro-optic layer in such a way that a specific optical effect is established, such that, for example, a hologram with a color change can be recognized. Here, too, it is possible to partially remove the reflector layer, so that in turn a further security feature or a personalization feature is established.
  • a laminatable cover layer is provided, which is preferably designed to be transparent or at least semitransparent.
  • This top layer acts as a protective layer and protects, for example, the micro-optical layer from abrasion. It is particularly advantageous here that the cover layer can be designed in such a way that a color-true security feature, for example the micro-optical elements, remain visible. This is particularly advantageous because a lacquer layer has traditionally been used which only provides a low level of protection against abrasion and is also cloudy. It was thus recognized according to the invention that a corresponding arrangement can also be provided by means of lamination, and that the cover layer as a laminatable cover layer provides an advantageous technical effect which makes a contribution to the lacquer layer.
  • the micro-optical layer is laminated into the layer arrangement, which is why it is particularly protected from abrasion.
  • the present invention is not limited to abrasion, but rather it is realized according to the invention that the micro-optic layer and possibly further layers, such as the reflector layer, are protected from the action of physical force.
  • security features which, according to the prior art, were only used for bank notes, can therefore also be used in a particularly advantageous manner for layer arrangements or documents of value which are laminated.
  • the focus here is on generating at least one first color and at least one second color as a function of the viewing angle of the viewer. This results in a dynamic behavior such that a color change is generated as a function of the viewing angle.
  • there is a flowing color change e.g.
  • a viewing angle cannot only be varied by the viewer changing his point of view with regard 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 preferably in the form of a coating on the cover layer.
  • This has the advantage that the information layer can be applied to at least one side of the cover layer, the cover layer preferably being transparent. It is thus possible to create a further personalization feature which interacts particularly advantageously with the cover layer. If, for example, the information layer is arranged above the cover layer, it can be partially removed, for example, and personalization can be created in this way. If the information layer is located below the cover layer, the information layer is protected by the cover layer. In particular, it is possible here to combine the information layer with further features that allow personalization.
  • the information layer is preferably in the form of a printing layer. This has the advantage that any logo can be attached or introduced to the layer arrangement or in the layer arrangement. In particular, the information layer can be provided by means of simple technical means.
  • the micro-optic layer is preferably in the form of an embossing lacquer layer. This has the advantage that the micro-optical layer can be produced by means of known methods which are used particularly advantageously in the context of the present invention. It is thus possible to design the micro-optical elements in a particularly advantageous manner by means of the embossing lacquer layer.
  • the micro-optics layer preferably has at least one micro-mirror array, a Fresnel lens and / or a micro-Fresnel lens.
  • these proposed micro-optical elements are suitable for providing a color change that is dependent on the viewing angle, it being possible for the micro-optical layer and / or at least one further layer to be designed in color. This results in a particularly appealing visual effect that can also be used as a safety function.
  • the reflector layer is preferably in the form of a screen print and / or a mirror-finish 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 can result from the reflector layer at least partially shining through the micro-optical layer and the cover layer or incident light which is guided through the cover layer, the information layer and the micro-optical layer onto the reflector layer, and accordingly a light reflex or light is reflected. causes a reflection of light.
  • the light is reflected back through the micro-optic layer, the information layer and the cover layer in such a way that an optical technical effect is created, which is supplemented by the micro-optic layer by means of the viewing angle-dependent color change.
  • a layer sequence preferably provides that the micro-optical layer is arranged between the reflector layer and the cover layer.
  • This has the advantage that the micro-optic layer is applied in a protected manner 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 designed to be transparent, in such a way that incident light strikes the micro-optical layer and is reflected there in the form of a color change that is dependent on the viewing angle. The reflection of the light can be brought about by the micro-optic layer and / or the reflector layer.
  • the reflector layer and / or the micro-optics layer is partially removed.
  • This has the advantage that a further personalization feature or a security feature can be introduced into the layer arrangement. Partial removal can be, for example, lasing or, in general, also demetallizing.
  • the reflector layer and / or the micro-optic layer preferably has a laser engraving, e.g. in the form of laser inscription or laser demetallization. This has the advantage that parts of the individual layers can be removed in a particularly advantageous manner and any pattern is thus established, which in turn appears as a security feature or as a personalization feature.
  • the layer arrangement is preferably in the form of a laminate composite. This has the advantage that the layer arrangement is laminated on and thus specifically no bank notes Rather, a laminate composite is created that does not depend on a layer of lacquer as required by the state of the art for sealing. Rather, the individual layer arrangements are connected in such a way that they are laminated and thus either form the document of value or a partial layer arrangement in such a way that further layers can be laminated onto this part of the document of value in later method steps.
  • At least one layer is preferably designed to be transparent.
  • the cover layer can be designed to be transparent and thus a protective layer can be laminated on, which is essentially color-true.
  • 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.
  • the object is also achieved by a document of value according to claim 11, having a layer arrangement according to one of the preferred embodiments described.
  • 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 in such a way that the value document is provided.
  • the value document is preferably a chip card, a smart card, a passport page, a label, a label or the like.
  • the object is also achieved by a method as defined in claim 12 for providing a layer arrangement for producing a security feature for use in value documents.
  • the computer program product also generates a print motif or laser motif to be printed, which is generated in a manufacturing step and then laminated in.
  • the computer program product can enable input, e.g. of an image, by a user.
  • the computer program product then converts the image motif into a print motif.
  • the print motif is then printed onto a carrier substrate using digital printing. After the print motif has been printed, it is laminated in.
  • the proposed Layer arrangement can be generated by means of the proposed method or the proposed device.
  • the procedure has procedural steps which are suitable for emulating the structural features of the layer arrangement or of the document of value.
  • 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 thus 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, e.g. B. the mode of operation of a Fresnel-like curved mirror reflector with introduced information, the information being introduced, for example, by the additional presence of a printing ink to be absorbed or due to the lack of an otherwise full-surface metallization.
  • the arrows show incident light from top to bottom, which is reflected back by the reflector in such a way that, depending on the viewing direction, it causes a different optical effect.
  • Such devices are known and are used, for example, to bring about an optical effect that is dependent on the viewing angle.
  • a so-called LEAD strip with microprisms or micro lenses is shown on the left. If this strip is now superimposed with a line pattern, as it is in the middle of the present one Fig. 2 is shown, there is a so-called rotation effect in the overlapping area, as shown on the right-hand side. This creates a moiré effect between the film and the background print. Thus, there is a color change or a change in a pattern that is dependent on the viewing angle.
  • Fig. 3 shows a conventional arrangement on a banknote substrate, an adhesive lacquer being arranged above the banknote substrate, followed by a metallization to which an embossing lacquer is applied. Above in the present Fig. 3 a partially applied printing ink can be seen. This leads to local color changes due to a micromirror reversal.
  • a transparent thermoplastically shaped polymer can also be used.
  • Layer arrangements according to the invention are shown below, the structures in the interior of a material composite, that is to say laminated Layers, are protected.
  • the reflector layer or the reflective layer can be provided separately from the micro-optical film layer.
  • the film elements with micro-lines, which correspond to a phase modulation, result in a wide range of design options and can be separated from micro-optical films or provided separately.
  • top and bottom which is based on a two-dimensional layer arrangement, as shown, for example, in the figures.
  • the layer that has been removed from the card body or the substrate is always at the top, and the layer is arranged at the bottom near the card body or the substrate.
  • Fig. 4 shows an implementation wherein a cover sheet has an information layer.
  • This cover sheet is arranged at the top in the present figure, only the partially applied printing ink being located above it.
  • Underneath that is, under the cover film, there is another film, under which an embossing lacquer is introduced, which forms a so-called micro-optical element, in the present case a Fresnel-like lens.
  • a reflective coating which is applied to the card body, is arranged underneath.
  • FIG. 13 shows a cover sheet with the information layer, the information layer now being attached below the cover sheet, and not, as is the case in FIG Fig. 4 is shown above the cover sheet.
  • the information layer can consist 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 steaming and a washing step during film production.
  • Fig. 6 shows an intermediate layer comprising the information layer.
  • the cover film is arranged at the top and the intermediate film, which can have an adhesive coating, for example, is arranged below it.
  • the information layer is arranged between the cover film and the intermediate film in such a way that it is printed onto the intermediate film.
  • further films can be provided, and the layer arrangement described is not exhaustive.
  • the reflector layer is shown on the card body, which can have a motif representation in silver.
  • Fig. 7 shows a micro-optical 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 through a second color on silver or through two differently colored reflective layers. Above is in the present Fig. 9 a metal layer is shown, which is subsequently personalized by means of a laser. In the present case, this personalization takes place by means of demetallization.
  • Fig. 11 shows a combination laminate with two different types of foil patches or punched foil elements which are laminated together.
  • a so-called micromirror or a holographic element is arranged on the card body.
  • Fig. 12 shows a combination laminate in a chip card with a customer hologram patch, for example for a bank.
  • the security feature is optically enlarged by the CDF standard film.
  • a differentiation in color and design can be adapted cost-effectively, while the company logo or brand name remains in the middle area.
  • Fig. 13 shows a multilayer structure based on the cards or documents of value described, wherein the multilayer structure can form a label or a label.
  • an upper material 1 is shown, which can be a paper-based or a film-based upper material.
  • 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 overprint or a layer that can be personalized by means of a laser.
  • Fig. 14 shows a microlens film which is mounted by lamination with a reflective background.
  • the microlens film here consists of an embossing varnish and a heat-sealing varnish or adhesive, abbreviated to HSL. This is only one aspect of the present invention which is optional with respect to the further embodiments.
  • Fig. 15 shows in a schematic flowchart a method for providing a layer arrangement for producing a security feature for use in documents of value, comprising providing 100 an information layer for personalizing the layer arrangement, providing 101 a micro-optical layer, having micro-optical elements which implement a color change depending on the viewing angle, providing 102 a Reflector layer which, in cooperation with at least the micro-optic layer, triggers a light reflection, provision 103 of a laminatable cover layer being provided and the micro-optic layer being laminated within the layer arrangement.
  • the color change results from the interaction of the information layer and the micro-optical layer and the reflector layer.
  • the method steps can be carried out iteratively and / or in a different order or can have substeps.
  • the micro-optical layers are protected and the information layer is chafed an offset color is prevented. Thanks to the use of highly transparent polymer layers, there is no clouding and, at the same time, significantly higher stability is achieved.
  • ID cards can be individualized by means of lasers, which means that the offset color of the laminated transparent CDF layers can be colored or decolorized or the underlying metallization can be removed.
  • Customization via, for example, a metal layer above the CDF layer, which can be locally removed using a laser, or via demetallization of the reflective coating.
  • such a "lamination CDF security element" based on a Fresnel-like micromirror film, which shows a different color impression at different viewing angles, can be offered in different segments without having to produce new film tools, e.g. single-color counter-rotation for low budget, two-color counter-rotation for medium-budget , Multicolor (eg 3 colors in combination), motif color change pumps and counter-rotation for high budget.
  • new film tools e.g. single-color counter-rotation for low budget, two-color counter-rotation for medium-budget , Multicolor (eg 3 colors in combination), motif color change pumps and counter-rotation for high budget.
  • a patch-like application makes it possible to apply the CDF in any shape, size and position within a card body.
  • Another advantage for production results from the combination of a customizable Universal CDF patch in combination with series / customer-specific hologram patch that are laminated together.
  • the added value with a CDF film can be further increased in addition to the classifications already described in combination with hologram features.
  • the film substrates above the reflector layer must be transparent in areas at least in the area of the security feature (windows / punched-out areas, etc. possible) or are preferably completely transparent substrate layers.
  • Printing processes for cards are, for example, offset or similar processes.
  • Printing processes for packaging and gift cards, vouchers are for example inkjet, laser toner, offset, etc.
  • the layers are glued, e.g. by means of a heat seal adhesive or by gluing the polymer films, by heating above their glass point.
  • a simple creation of an individually configurable, impressive colored movement effect within the card body is thus created by using printable, laminatable micro-optic films or micro-optic patches (with or without metallization).

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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)
  • Holo Graphy (AREA)
  • Credit Cards Or The Like (AREA)

Claims (14)

  1. Agencement en couches destiné à la fabrication d'une caractéristique de sécurité pour utilisation dans des documents de valeur, comportant :
    - une couche d'information pour la personnalisation de l'agencement en couches ;
    - une couche de micro-optique comportant des éléments de micro-optique qui réalisent une changement de couleur en fonction de l'angle de vision ;
    - une couche de réflecteur qui, en co-agissement au moins avec la couche de micro-optique, engendre une réflexion de lumière ;
    - une couche de recouvrement laminable est prévue, et la couche de micro-optique est introduite par laminage à l'intérieur de l'agencement en couches,
    - caractérisé en ce que la couche de réflecteur et/ou la couche de micro-optique est partiellement enlevée.
  2. Agencement en couches selon la revendication 1, caractérisé en ce que la couche d'information se trouve sous forme d'un revêtement de la couche de recouvrement.
  3. Agencement en couches selon la revendication 1 ou 2, caractérisé en ce que la couche d'information se trouve sous forme d'une couche d'impression.
  4. Agencement en couches selon une des revendications précédentes, caractérisé en ce que la couche de micro-optique se trouve sous forme d'une couche de vernis de gaufrage.
  5. Agencement en couches selon une des revendications précédentes, caractérisé en ce que la couche de micro-optique comporte au moins un groupement de micro-miroirs, une lentille de Fresnel et/ou une micro-lentille de Fresnel.
  6. Agencement en couches selon une des revendications précédentes, caractérisé en ce que la couche de réflecteur se trouve sous forme d'une sérigraphie et/ou d'une feuille à brillance spéculaire.
  7. Agencement en couches selon une des revendications précédentes, caractérisé en ce qu'une succession de couches prévoit que la couche de micro-optique est agencée entre la couche de réflecteur et la couche de recouvrement.
  8. Agencement en couches selon une des revendications précédentes, caractérisé en ce que la couche de réflecteur et/ou la couche de micro-optique comporte une gravure laser.
  9. Agencement en couches selon une des revendications précédentes, caractérisé en ce que l'agencement en couches se trouve sous forme d'un composite stratifié.
  10. Agencement en couches selon une des revendications précédentes, caractérisé en ce qu'au moins une couche est réalisée sous forme transparente.
  11. Document de valeur comportant un agencement en couches selon une des revendications de 1 à 10.
  12. Procédé de mise à disposition d'un agencement en couches pour la fabrication d'une caractéristique de sécurité pour utilisation dans des documents de valeur, comportant :
    - une mise à disposition (100) d'une couche d'information pour la personnalisation de l'agencement en couches ;
    - une mise à disposition (101) d'une couche de micro-optique comportant des éléments de micro-optique qui réalisent une changement de couleur en fonction de l'angle de vision ;
    - une mise à disposition (102) d'une couche de réflecteur qui, en co-agissement au moins avec la couche de micro-optique, engendre une réflexion de lumière ;
    - une mise à disposition (103) d'une couche de recouvrement laminable est prévue, et la couche de micro-optique est introduite par laminage à l'intérieur de l'agencement en couches,
    - caractérisé en ce que la couche de réflecteur et/ou la couche de micro-optique est partiellement enlevée.
  13. Dispositif de mise à disposition d'un agencement en couches pour la fabrication d'une caractéristique de sécurité pour utilisation dans des documents de valeur, comportant :
    - un équipement conçu pour la mise à disposition (100) d'une couche d'information pour la personnalisation de l'agencement en couches ;
    - un équipement conçu pour la mise à disposition (101) d'une couche de micro-optique comportant des éléments de micro-optique qui réalisent une changement de couleur en fonction de l'angle de vision ;
    - un équipement conçu pour la mise à disposition (102) d'une couche de réflecteur qui, en co-agissement au moins avec la couche de micro-optique, engendre une réflexion de lumière ;
    - un équipement conçu pour la mise à disposition (103) d'une couche de recouvrement laminable est prévue, et la couche de micro-optique est introduite par laminage à l'intérieur de l'agencement en couches au moyen d'un équipement de laminage,
    caractérisé en ce que le dispositif est conçu pour enlever partiellement la couche de réflecteur et/ou la couche de micro-optique.
  14. Produit programme d'ordinateur ayant des instructions de commande qui exécutent le procédé selon la revendication 12 sur un dispositif selon la revendication 13 quand elles sont mises à exécution sur un ordinateur.
EP18000519.1A 2017-06-19 2018-06-14 Élément microoptique à changement de couleur Active EP3418065B1 (fr)

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DE102017005779.6A DE102017005779A1 (de) 2017-06-19 2017-06-19 Mikrooptisches Element mit Farbwechsel

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CN111716937B (zh) * 2019-03-19 2021-10-26 中钞特种防伪科技有限公司 光学防伪元件及光学防伪产品
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
US20220388326A1 (en) * 2019-09-30 2022-12-08 Zhongchao Special Security Technology Co., Ltd Optical anti-counterfeiting element and anti-counterfeiting product

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