EP3594012B1 - Valuable document having optical security feature - Google Patents

Valuable document having optical security feature Download PDF

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Publication number
EP3594012B1
EP3594012B1 EP19000326.9A EP19000326A EP3594012B1 EP 3594012 B1 EP3594012 B1 EP 3594012B1 EP 19000326 A EP19000326 A EP 19000326A EP 3594012 B1 EP3594012 B1 EP 3594012B1
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EP
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Prior art keywords
value document
information field
substrate layer
document according
value
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EP19000326.9A
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German (de)
French (fr)
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EP3594012A1 (en
Inventor
Josef Riedl
Günter Endres
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Giesecke and Devrient Mobile Security GmbH
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Giesecke and Devrient Mobile Security GmbH
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Publication of EP3594012A1 publication Critical patent/EP3594012A1/en
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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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation

Definitions

  • the present invention is directed to a document of value with an optical security feature which offers a surprising optical effect which can not only be used as a security feature, but rather a particularly attractive optical effect is also created.
  • the invention is also directed to a corresponding method for producing the document of value and to a computer program product with control commands which operate the method.
  • WO 2017/207 064 A1 shows a security document with positive writing and negative writing.
  • EP 2 465 703 A2 shows a security element with an interference coating and shows so-called STEP colors.
  • STEP stands for Shimmery Twin Effect Protection.
  • EP 0 317 514 A1 shows an authenticity feature with an Iriodin color layer.
  • MLI MLI
  • CLI CLI
  • DLI DLI
  • black and white information such as name, date of birth and the like. This means that the card body in the MLI area is white or light and the personalization data is darkened by laser.
  • MLI stands for Multiple Laser Image
  • CLI Changeable Laser Image
  • DLI Diagonal Laser Image
  • the document EP 2 050 574 A1 discloses a value document according to the preamble of claim 1.
  • optically variable inks or pigments also known as Optical Variable Inks OVI
  • STEP colors are known, which are provided as transparent liquid crystal effect pigments. Often, however, such pigments are weak in color and cannot be seen on a light background. The disadvantage thus arises that the optical effect of such features is only very slight. In general, however, it is necessary that security features in daily circulation can be reliably detected with the naked eye.
  • the value document can have further components.
  • the value document is in the form of a smart card that holds electronic components that are used for data processing.
  • Such components are, for example, a microprocessor, a memory and an induction coil.
  • the proposed list is therefore not exhaustive, and further layers can also be provided which are laminated to form the proposed layers become. It is only essential here that the information provided is visible from outside the document of value.
  • the value document is to be interpreted broadly in the context of the present invention and can be present, for example, as a credit card.
  • This value document comprises a security feature, namely the information provided or the optical effect associated with it. Since the optical effect can be seen with the naked eye, this optical effect is suitable as a security feature.
  • combinations with further security features are possible, for example the optically variable ink or the liquid crystal effect pigments.
  • the value document has, inter alia, a substrate layer which essentially creates the document body.
  • the document body comprises a layer structure which consists of several layers or foils. These layers or foils can be laminated on or can also be provided by means of coextrusion.
  • Further electronic components can be incorporated into the document body, such as a microprocessor, a memory and an induction coil. Since the optical effects of the proposed document of value are generated in that corresponding devices are applied to the surface of the document of value, it is possible to use a conventional document body which already has electronic components.
  • the list is also not exhaustive, and the substrate layer can in turn be applied to further layers.
  • the nature of the substrate is not decisive here, whereby the substrate only has to be suitable for lasering.
  • Known materials are, for example, PVC or polycarbonate.
  • the substrate layer has an information field which is introduced on the surface.
  • this information field is introduced superficially by means of lasering. Specifically, a laser is directed onto the substrate and then the surface of the substrate is at least partially carbonized. The information provided is not lasered, only the information field as such. This creates a darkened information field, which reveals the information provided in the light areas that remain free.
  • the information field is generally created over the entire area by means of a laser, except for information provided, can also be understood as creating what is known as negative writing. Such negative writing is the opposite of the already known positive lettering. Since the information field is fully carbonized and only the information provided remains light, the information provided is not lasered in, but rather only the areas surrounding the information provided are lasered, and thus the information provided is indirectly created on the substrate layer. Figuratively speaking, the information field is generally black or darkened, while the information provided is white or light.
  • the specific color is evident depending on the material used for the substrate layer.
  • light substrate layers are generally suitable, which are then darkened in the information field.
  • the invention it is ensured that a graphic reproduction of the information provided varies as a function of the viewing angle. This is accomplished in such a way that the information provided is already introduced in the manufacturing process by means of a laser which lasers through a lens arrangement. As a result, the laser is directed at individual lenses and then deflected in such a way that carbonization takes place at a specific point on the substrate. The lasering thus takes place at a certain angle from which the information introduced is then also visible after the production of the document of value.
  • a separate lens arrangement which is implemented as a separate layer. This layer is arranged above the substrate layer so that the focal point of the laser lies on the substrate layer. In general, it can also be possible to introduce an intermediate layer between the substrate layer and the lens arrangement, which advantageously configures the focal point.
  • the graphic reproduction can thus vary as a function of the viewing angle, which in practice takes place in such a way that a viewer holds the document of value in front of him and moves it. This movement creates a tilting effect or a viewing angle-dependent reproduction of the information.
  • the information provided or the information field thus varies as a function of the angle, and the corresponding result can be recognized by means of the unarmed eye.
  • the information field or the information provided can be varied by changing the gray level value respectively. A completely black marking can thus become visible at a first angle and, with continuous movement of the document of value, this black information field can slowly change color from dark gray to light gray to white. This creates a tipping effect of the information field and, implicitly, of the information provided.
  • an optically variable ink is applied to the information field in at least one area that has been lasered over the entire surface.
  • This has the advantage that the optically variable ink can develop an optical effect particularly well if the background or the background is designed to be opaque or dark. As a result, a suitable background is created and the optically variable ink can create a further angle-dependent effect and thus implement a further security feature.
  • An optically variable ink is also referred to as an optical variable ink OVI, which is generally to be understood broadly.
  • the term “ink” is not only directed to a liquid ink per se, but rather is also to be understood as meaning corresponding color pigments.
  • transparent optical liquid crystal effect pigments are applied to the information field in at least one area that has been lasered over the entire surface.
  • This has the advantage that such liquid crystal effect pigments also require an opaque or dark background in order to produce a particularly clear optical effect.
  • Corresponding color pigments are already known from the prior art and are referred to, for example, as STEP colors. According to the invention, these color pigments are used particularly advantageously, and this is precisely the combination with those that are lasered over the entire surface Areas beneficial.
  • a further security feature is thus provided in turn, which supplements the already existing security feature of the angle-dependent information field.
  • the information field can interact with the optically variable ink and / or the transparent optical liquid crystal effect pigments. In this way, partial patterns can be provided in each case, which result in an overall pattern.
  • the transparent optical liquid crystal effect pigments are particularly advantageous because, as transparent pigments, they require a suitable background and, due to the transparency, do not obscure the information field or the information provided.
  • lasering the information field creates a tilting effect along a first axis
  • the optically variable ink and / or the transparent optical liquid crystal effect pigments create a tilting effect along a second axis.
  • the first axis and the second axis are orthogonal to one another. This has the advantage that the two tipping effects created can be viewed independently of one another. If the value document is tilted in a first direction, only a first security feature changes and the second security feature remains unchanged. This, too, can relate to the Authentication of the document of value can be used, since this is also difficult to rework.
  • the information field has negative writing.
  • a negative font is generally a font that is not applied per se, but rather the area around the font is colored in such a way that only the non-colored font remains optically. Thus, negative writing is the opposite of so-called positive lettering.
  • the viewing angle dependency is continuous.
  • This has the advantage that there is no binary color change, but rather the information field provided can continuously change its value from black to white or from dark to light. All intermediate levels are thus provided according to the invention, in particular gray levels that arise when changing from dark to light. The resulting coloring is again dependent on the color of the selected base substrate.
  • the dark area of the information field is black.
  • the information field is in the form of a multiple laser image MLI.
  • a multiple laser image is generally similar to a hologram It is based on a lens system embossed on the surface of a card, in which parts are blackened with a laser.
  • One difference to the hologram is that with the Multiple Laser Image MLI, card-specific information is shown on the small image. For example, the cardholder's name can be inserted individually as a tilted image.
  • the lens arrangement is created by a surface contour of the substrate layer. This has the advantage that the lens arrangement can be applied directly to the substrate and thus no separate layer is necessary. In this way, the lens structure can be embossed into the substrate layer and can thus be produced with little technical effort.
  • the lens arrangement is created by a separate layer.
  • This has the advantage that a prefabricated and specially set up separate layer can be provided which has the lenses. This is an essentially transparent layer, since the laser has to penetrate this layer and the information underneath must not be covered.
  • a spacer layer for setting a focal length of the lens arrangement is provided between the substrate layer and the separate layer.
  • the information provided is introduced in such a way that it is optically invisible when viewed orthogonally to a surface of the document of value.
  • This has the advantage that when the individual color values transition, an intermediate value is set at which the recognizable color value corresponds to that of the substrate. It is thus possible for the viewer to look at the value document and actually only see the substrate itself without a tilting effect. If, on the other hand, the value document is moved to the left or right or up or down, the information field or the security features become visible. This is also particularly difficult to rework and thus a forgery-proof document of value results.
  • the value document is present as a passport book page, a data page, a credit card, a smart card, a security token, a bank note and / or a card-shaped data carrier.
  • a data page is, for example, a laminated page, as it is also present in a passport book.
  • the data page contains further security features and is in itself particularly forgery-proof.
  • Such data pages are not only integrated into a passport book, but also into other documents that require special protection against forgery.
  • the object is also achieved by a method according to claim 14.
  • the value document is generated by means of the proposed method.
  • the method thus comprises process steps which create the structural features of the value document.
  • the value document thus has structural features which are provided by means of corresponding method steps.
  • FIG. 1 The figure above shows how an information field is created on a value document in such a way that it is lasered over the entire surface and only the information provided remains.
  • the information field is lasered over the entire surface, with the lettering, i.e. the information provided, remaining behind. Since this is provided by means of the proposed lens arrangement, it is possible for the reproduction of the information provided to vary as a function of the viewing angle.
  • Fig. 1 This variation is shown in the figure below Fig. 1 shown.
  • a tilt of -15 ° is shown at the top and a tilt of + 15 ° at the bottom.
  • the blackening of the information field and the information provided disappear. Then the two characteristics can no longer be distinguished from one another. The information only becomes visible again when it is tilted again.
  • Fig. 2 shows as an example so-called STEP colors or optically variable colors that come into their own on the black background. Otherwise they will be very transparent and possibly not visible.
  • the STEP colors are thus an example of transparent optical liquid crystal effect pigments which, according to the present invention, create a further security feature. It is particularly advantageous here that this security feature can be combined with the security feature of the information provided.
  • Fig. 3 shows a further application example, the further security feature not being present as a font, but rather the STEP colors are applied over the entire surface. This is particularly advantageous because the STEP colors are particularly effective on the dark background and thus a particularly clear optical effect occurs, which can also be seen with the naked eye.
  • Fig. 4 shows a further example, an optically variable ink now being used, a so-called optical variable ink OVI.
  • OVI optical variable ink
  • Fig. 5 shows a schematic flowchart of a method for producing a document of value with an optical security feature, comprising providing 100 a substrate layer to create a document body, an information field being introduced 101 superficially into the substrate layer, which except for information provided over the entire area by means of a laser through a lens arrangement the substrate layer is created so that a graphic representation of the information provided varies as a function of the viewing angle.
  • an inverse laser personalization can be created. First of all, this is done in black and white. In an expansion stage, certain properties of STEP colors or OVI colors can be used. These types of colors contain pigments or dyes, which only come into their full optical advantage when the background is as dark as possible. That is, a combination of flat black lasering and such corresponding colors results in a colored "flip-flop".

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Credit Cards Or The Like (AREA)

Description

Die vorliegende Erfindung ist auf ein Wertdokument mit einem optischen Sicherheitsmerkmal gerichtet, welches einen überraschenden optischen Effekt bietet, der nicht nur als Sicherheitsmerkmal Verwendung finden kann, sondern vielmehr wird auch ein besonders ansprechender optischer Effekt geschaffen. Die Erfindung ist auch gerichtet auf ein entsprechendes Verfahren zur Herstellung des Wertdokuments sowie auf ein Computerprogrammprodukt mit Steuerbefehlen, welche das Verfahren betreiben.The present invention is directed to a document of value with an optical security feature which offers a surprising optical effect which can not only be used as a security feature, but rather a particularly attractive optical effect is also created. The invention is also directed to a corresponding method for producing the document of value and to a computer program product with control commands which operate the method.

WO 2017/207 064 A1 zeigt ein Sicherheitsdokument mit einer Positivschrift und einer Negativschrift. WO 2017/207 064 A1 shows a security document with positive writing and negative writing.

EP 2 465 703 A2 zeigt ein Sicherheitselement mit einer Interferenzbeschichtung und zeigt sogenannte STEP-Farben. STEP steht hierbei für Shimmery Twin Effect Protection. EP 2 465 703 A2 shows a security element with an interference coating and shows so-called STEP colors. STEP stands for Shimmery Twin Effect Protection.

EP 0 317 514 A1 zeigt ein Echtheitsmerkmal mit einer Iriodin-Farbschicht. EP 0 317 514 A1 shows an authenticity feature with an Iriodin color layer.

Derzeit werden viele ID-Karten und Datenseiten für Pässe hergestellt, welche typischerweise aus Polycarbonat PC bestehen. Dabei wird oftmals ein sogenanntes MLI, CLI oder DLI als eines von vielen Sicherheitsfeatures verwendet. Das heißt, durch eine Linsenstruktur auf der Karte werden je nach Eintrittswinkel verschiedene Informationen per Laser eingebracht. Diese erscheinen dann ebenfalls unter bestimmten Winkeln beim Betrachten und werden wieder sichtbar. Das sind in der Regel Schwarz-Weiß-Informationen wie Namen, Geburtsdatum und dergleichen. Das heißt, dass der Kartenkörper im MLI-Bereich weiß bzw. hell ist und die Personalisierungsdaten per Laser dunkel geschwärzt werden.Many ID cards and data pages for passports are currently produced, which are typically made of polycarbonate PC. A so-called MLI, CLI or DLI is often used as one of many security features. This means that, depending on the angle of entry, various information is introduced by laser through a lens structure on the card. These then also appear at certain angles when looking at them and become visible again. This is usually black and white information such as name, date of birth and the like. This means that the card body in the MLI area is white or light and the personalization data is darkened by laser.

Allgemein steht MLI für Multiple Laser Image, CLI für Changeable Laser Image und DLI für Diagonal Laser Image. MLI, CLI und DLI in der zitierten Form sind inzwischen Standard und auf fast jeder ID-Karte als Sicherheitsfeature vorhanden. Ein Kippbild kann nur Schwarz-Weiß erfolgen. Die Informationen werden stets in Positive-Lettering eingebracht. Bei einem solchen Positive-Lettering handelt es sich um eine herkömmliche Schreibweise, bei der auf einem hellen Hintergrund eine dunklere oder schwarze Information aufgebracht wird. Dies erkennt der Betrachter mittlerweile nicht mehr als besonders ansprechend bzw. ist ein solches Positive-Lettering insgesamt wenig ansprechend.In general, MLI stands for Multiple Laser Image, CLI for Changeable Laser Image and DLI for Diagonal Laser Image. MLI, CLI and DLI in the cited form are now standard and are available on almost every ID card as a security feature. A tilt image can only be done in black and white. The information is always included in positive lettering. Such positive lettering is a conventional notation in which darker or black information is applied to a light background. The viewer no longer recognizes this as particularly appealing, or such positive lettering is generally not very appealing.

Das Dokument EP 2 050 574 A1 offenbart ein Wertdokument nach dem Oberbegriff des Anspruchs 1.The document EP 2 050 574 A1 discloses a value document according to the preamble of claim 1.

Generell besteht im Bereich der Wertdokumente ein Bedarf, neuerliche Sicherheitsmerkmale zu schaffen. Hierdurch wird der Aufwand für eine Fälschung erhöht, da sich Fälscher stets auf neue visuelle Erscheinungsbilder einstellen müssen. Darüber hinaus besteht generell ein Bedarf an Sicherheitsmerkmalen, welche technisch einfach umsetzbar sind. Typischerweise werden Wertdokumente in großer Stückzahl bereitgestellt, so dass auch der technische Aufwand bei deren Herstellung zu berücksichtigen ist.In general, there is a need in the field of value documents to create new security features. This increases the cost of a forgery, since counterfeiters always have to adjust to new visual appearances. In addition, there is generally a need for security features that are technically easy to implement. Typically, documents of value are provided in large numbers, so that the technical effort involved in their production must also be taken into account.

Ein weiterer Nachteil gemäß Stand der Technik ist es, dass teilweise Sicherheitsmerkmale mit unbewaffnetem Auge schwer erkenntlich sind. So sind beispielsweise optisch variable Tinten bzw. Pigmente, auch als Optical Variable Inks OVI, bekannt. Darüber hinaus sind die sogenannten STEP-Farben bekannt, welche als transparente Flüssigkristalleffektpigmente bereitgestellt werden. Oftmals sind solche Pigmente jedoch farbschwach und auf hellem Hintergrund nicht zu erkennen. Somit stellt sich also der Nachteil ein, dass der optische Effekt von solchen Merkmalen nur sehr gering ist. Generell ist es jedoch erforderlich, dass es Sicherheitsmerkmale im täglichen Umlauf mit dem unbewaffneten Auge sicher feststellbar sind.Another disadvantage according to the prior art is that some security features are difficult to see with the naked eye. For example, optically variable inks or pigments, also known as Optical Variable Inks OVI, are known. In addition, the so-called STEP colors are known, which are provided as transparent liquid crystal effect pigments. Often, however, such pigments are weak in color and cannot be seen on a light background. The disadvantage thus arises that the optical effect of such features is only very slight. In general, however, it is necessary that security features in daily circulation can be reliably detected with the naked eye.

Daher ist es eine Aufgabe der vorliegenden Erfindung, ein verbessertes Wertdokument bereitzustellen, welches einen überraschenden optischen Effekt aufweist, der mit geringem technischen Aufwand bereitzustellen ist und zum einen als Sicherheitsmerkmal fungieren kann und darüber hinaus optisch ansprechend aussieht. Ferner ist es eine Aufgabe der vorliegenden Erfindung, ein Verfahren gerichtet auf die Herstellung des Wertdokuments vorzuschlagen sowie ein Computerprogrammprodukt mit Steuerbefehlen, welche das vorgeschlagene Verfahren implementieren.It is therefore an object of the present invention to provide an improved document of value which has a surprising optical effect, which can be provided with little technical effort and, on the one hand, can function as a security feature and, moreover, looks visually appealing. Furthermore, it is an object of the present invention to propose a method aimed at producing the document of value and a computer program product with control commands which implement the proposed method.

Die Aufgabe wird gelöst mit den Merkmalen der unabhängigen Patentansprüche. Weitere vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.The object is achieved with the features of the independent patent claims. Further advantageous refinements are given in the subclaims.

Demgemäß wird ein Wertdokument nach Anspruch 1 vorgeschlagen.Accordingly, a value document according to claim 1 is proposed.

Der Fachmann erkennt hierbei, dass das Wertdokument weitere Komponenten aufweisen kann. Beispielsweise liegt das Wertdokument als eine Smartcard vor, welche elektronische Komponenten vorhält, die der Datenverarbeitung dienen. Solche Komponenten sind beispielsweise ein Mikroprozessor, ein Speicher und eine Induktionsspule. Somit ist die vorgeschlagene Aufzählung nicht abschließend, und darüber hinaus können auch weitere Schichten vorgesehen werden, welche zu den vorgeschlagenen Schichten auflaminiert werden. Hierbei ist es lediglich wesentlich, dass die bereitgestellte Information von außerhalb des Wertdokuments sichtbar ist. Dem stehen entsprechende Schutzschichten, welche transparent ausgestaltet sind, nicht entgegen. Typischerweise ist es vorteilhaft, oberhalb der Substratschicht eine transparente Overlayfolie anzuordnen.The person skilled in the art recognizes that the value document can have further components. For example, the value document is in the form of a smart card that holds electronic components that are used for data processing. Such components are, for example, a microprocessor, a memory and an induction coil. The proposed list is therefore not exhaustive, and further layers can also be provided which are laminated to form the proposed layers become. It is only essential here that the information provided is visible from outside the document of value. Corresponding protective layers, which are designed to be transparent, do not conflict with this. It is typically advantageous to arrange a transparent overlay film above the substrate layer.

Das Wertdokument ist im Kontext der vorliegenden Erfindung breit zu interpretieren und kann beispielsweise als eine Kreditkarte vorliegen. Dieses Wertdokument umfasst ein Sicherheitsmerkmal, nämlich die bereitgestellte Information bzw. der optische Effekt, der hiermit verbunden ist. Da der optische Effekt mit dem unbewaffneten Auge erkennbar ist, eignet sich dieser optische Effekt als ein Sicherheitsmerkmal. Darüber hinaus sind Kombinationen mit weiteren Sicherheitsmerkmalen möglich, beispielsweise der optisch variablen Tinte bzw. den Flüssigkristalleffektpigmenten.The value document is to be interpreted broadly in the context of the present invention and can be present, for example, as a credit card. This value document comprises a security feature, namely the information provided or the optical effect associated with it. Since the optical effect can be seen with the naked eye, this optical effect is suitable as a security feature. In addition, combinations with further security features are possible, for example the optically variable ink or the liquid crystal effect pigments.

Das Wertdokument weist u. a. eine Substratschicht auf, die im Wesentlichen den Dokumentkörper schafft. Liegt das Wertdokument als eine Kreditkarte vor, so umfasst der Dokumentkörper einen Schichtaufbau, welcher aus mehreren Schichten bzw. Folien besteht. Diese Schichten bzw. Folien können auflaminiert werden oder aber auch mittels Koextrusion bereitgestellt werden. In den Dokumentkörper können weitere elektronische Komponenten eingebracht werden, wie beispielsweise ein Mikroprozessor, ein Speicher und eine Induktionsspule. Da die optischen Effekte des vorgeschlagenen Wertdokuments dadurch erzeugt werden, dass entsprechende Vorrichtungen an der Oberfläche des Wertdokuments aufgebracht werden, ist es möglich, dass ein herkömmlicher Dokumentkörper Verwendung findet, der bereits elektronische Komponenten aufweist. Auch ist die Aufzählung nicht abschließend, und die Substratschicht kann wiederum auf weitere Schichten aufgebracht werden. Die Beschaffenheit des Substrats ist vorliegend nicht ausschlaggebend, wobei das Substrat lediglich zur Laserung geeignet sein muss. Bekannte Materialien sind hierbei beispielsweise PVC oder Polycarbonat.The value document has, inter alia, a substrate layer which essentially creates the document body. If the value document is in the form of a credit card, the document body comprises a layer structure which consists of several layers or foils. These layers or foils can be laminated on or can also be provided by means of coextrusion. Further electronic components can be incorporated into the document body, such as a microprocessor, a memory and an induction coil. Since the optical effects of the proposed document of value are generated in that corresponding devices are applied to the surface of the document of value, it is possible to use a conventional document body which already has electronic components. The list is also not exhaustive, and the substrate layer can in turn be applied to further layers. The nature of the substrate is not decisive here, whereby the substrate only has to be suitable for lasering. Known materials are, for example, PVC or polycarbonate.

Die Substratschicht weist ein Informationsfeld auf, welches oberflächlich eingebracht ist. Erfindungsgemäß erfolgt das oberflächliche Einbringen dieses Informationsfelds mittels einer Laserung. Konkret wird also ein Laser auf das Substrat gerichtet und sodann die Oberfläche des Substrats zumindest teilweise karbonisiert. Die bereitgestellte Information wird nicht gelasert, sondern lediglich das Informationsfeld als solches. Somit entsteht also ein abgedunkeltes Informationsfeld, welches an den freibleibenden, hellen Stellen die bereitgestellte Information offenbart.The substrate layer has an information field which is introduced on the surface. According to the invention, this information field is introduced superficially by means of lasering. Specifically, a laser is directed onto the substrate and then the surface of the substrate is at least partially carbonized. The information provided is not lasered, only the information field as such. This creates a darkened information field, which reveals the information provided in the light areas that remain free.

Diese Bereitstellung von Information ist besonders vorteilhaft, da sie Ausgangspunkt sein kann für andere Sicherheitsmerkmale, wie beispielsweise optisch variable Pigmente. Dass generell das Informationsfeld bis auf eine bereitgestellte Information vollflächig mittels Laser geschaffen wird, kann auch als das Schaffen einer sogenannten Negativschrift verstanden werden. Bei einer solchen Negativschrift handelt es sich um das Gegenteil des bereits bekannten Positive-Lettering. Da das Informationsfeld vollflächig karbonisiert ist und lediglich die bereitgestellte Information hell bleibt, wird also nicht die bereitgestellte Information eingelasert, sondern vielmehr werden lediglich die die bereitgestellte Information umgebenden Bereiche gelasert, und somit wird indirekt die bereitgestellte Information auf der Substratschicht geschaffen. Bildlich gesprochen ist also das Informationsfeld im Generellen schwarz bzw. abgedunkelt, während die bereitgestellte Information weiß bzw. hell ist.This provision of information is particularly advantageous since it can be the starting point for other security features, such as, for example, optically variable pigments. The fact that the information field is generally created over the entire area by means of a laser, except for information provided, can also be understood as creating what is known as negative writing. Such negative writing is the opposite of the already known positive lettering. Since the information field is fully carbonized and only the information provided remains light, the information provided is not lasered in, but rather only the areas surrounding the information provided are lasered, and thus the information provided is indirectly created on the substrate layer. Figuratively speaking, the information field is generally black or darkened, while the information provided is white or light.

Die konkrete Farbgebung wird in Abhängigkeit des verwendeten Materials der Substratschicht ersichtlich. Um die Lesbarkeit der bereitgestellten Information zu erhöhen, eignen sich generell helle Substratschichten, die sodann in dem Informationsfeld verdunkelt werden.The specific color is evident depending on the material used for the substrate layer. In order to increase the legibility of the information provided, light substrate layers are generally suitable, which are then darkened in the information field.

Erfindungsgemäß wird sichergestellt, dass eine graphische Wiedergabe der bereitgestellten Information betrachtungswinkelabhängig variiert. Dies wird derart bewerkstelligt, dass bereits im Herstellungsprozess die bereitgestellte Information mittels eines Lasers eingebracht wird, der durch eine Linsenanordnung hindurch lasert. Folglich wird also der Laser auf einzelne Linsen gerichtet und sodann derart umgelenkt, dass eine Karbonisierung an einer bestimmten Stelle auf dem Substrat erfolgt. Somit erfolgt das Lasern in einem bestimmten Winkel, aus dem nach der Herstellung des Wertdokuments dann auch die eingebrachte Information sichtbar ist. Hierzu ist es möglich, eine gesonderte Linsenanordnung bereitzustellen, welche als eigene Schicht implementiert ist. Diese Schicht wird oberhalb der Substratschicht angeordnet, so dass der Brennpunkt des Lasers auf der Substratschicht liegt. Generell kann es auch möglich sein, eine Zwischenschicht zwischen der Substratschicht und der Linsenanordnung einzuführen, die den Brennpunkt vorteilhaft ausgestaltet.According to the invention, it is ensured that a graphic reproduction of the information provided varies as a function of the viewing angle. This is accomplished in such a way that the information provided is already introduced in the manufacturing process by means of a laser which lasers through a lens arrangement. As a result, the laser is directed at individual lenses and then deflected in such a way that carbonization takes place at a specific point on the substrate. The lasering thus takes place at a certain angle from which the information introduced is then also visible after the production of the document of value. For this purpose, it is possible to provide a separate lens arrangement which is implemented as a separate layer. This layer is arranged above the substrate layer so that the focal point of the laser lies on the substrate layer. In general, it can also be possible to introduce an intermediate layer between the substrate layer and the lens arrangement, which advantageously configures the focal point.

Die graphische Wiedergabe kann somit betrachtungswinkelabhängig variieren, was in der Praxis derart erfolgt, dass ein Betrachter das Wertdokument vor sich hält und es bewegt. Durch diese Bewegung entsteht ein Kippeffekt bzw. ein betrachtungswinkelabhängiges Wiedergeben der Information. Somit variiert die bereitgestellte Information bzw. das Informationsfeld winkelabhängig, und das entsprechende Resultat kann mittels des unbewaffneten Auges erkannt werden. Ein Variieren des Informationsfelds bzw. der bereitgestellten Information kann durch eine Veränderung des Graustufenwerts erfolgen. So kann in einem ersten Winkel eine komplett schwarze Markierung sichtbar werden und bei einem kontinuierlichen Bewegen des Wertdokuments kann sich dieses schwarze Informationsfeld langsam von Dunkelgrau nach Hellgrau hinzu Weiß verfärben. Somit entsteht ein Kippeffekt des Informationsfelds und implizit auch der bereitgestellten Information.The graphic reproduction can thus vary as a function of the viewing angle, which in practice takes place in such a way that a viewer holds the document of value in front of him and moves it. This movement creates a tilting effect or a viewing angle-dependent reproduction of the information. The information provided or the information field thus varies as a function of the angle, and the corresponding result can be recognized by means of the unarmed eye. The information field or the information provided can be varied by changing the gray level value respectively. A completely black marking can thus become visible at a first angle and, with continuous movement of the document of value, this black information field can slowly change color from dark gray to light gray to white. This creates a tipping effect of the information field and, implicitly, of the information provided.

Gemäß einem Aspekt der vorliegenden Erfindung ist auf das Informationsfeld in mindestens einem vollflächig gelaserten Bereich eine optisch variable Tinte aufgebracht. Dies hat den Vorteil, dass die optisch variable Tinte besonders gut einen optischen Effekt entfalten kann, falls der Untergrund bzw. der Hintergrund opak bzw. dunkel ausgestaltet ist. Folglich wird ein geeigneter Hintergrund geschaffen, und die optisch variable Tinte kann einen weiteren winkelabhängigen Effekt schaffen und somit ein weiteres Sicherheitsmerkmal implementieren. Eine optisch variable Tinte wird auch als Optical Variable Ink OVI bezeichnet, was generell breit zu verstehen ist. Somit ist der Ausdruck "Tinte" nicht lediglich auf eine flüssige Tinte an sich gerichtet, sondern vielmehr sind darunter auch entsprechende Farbpigmente zu verstehen.According to one aspect of the present invention, an optically variable ink is applied to the information field in at least one area that has been lasered over the entire surface. This has the advantage that the optically variable ink can develop an optical effect particularly well if the background or the background is designed to be opaque or dark. As a result, a suitable background is created and the optically variable ink can create a further angle-dependent effect and thus implement a further security feature. An optically variable ink is also referred to as an optical variable ink OVI, which is generally to be understood broadly. Thus, the term “ink” is not only directed to a liquid ink per se, but rather is also to be understood as meaning corresponding color pigments.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung sind auf das Informationsfeld in mindestens einem vollflächig gelaserten Bereich transparente optische Flüssigkristalleffektpigmente aufgebracht. Dies hat den Vorteil, dass auch solche Flüssigkristalleffektpigmente einen opaken bzw. dunklen Hintergrund benötigen, um einen besonders deutlichen optischen Effekt hervorzurufen. Entsprechende Farbpigmente sind bereits aus dem Stand der Technik bekannt und werden beispielsweise als STEP-Farben bezeichnet. Erfindungsgemäß werden diese Farbpigmente besonders vorteilhaft eingesetzt, und hierbei ist gerade die Kombination mit den vollflächig gelaserten Bereichen vorteilhaft. Somit wird wiederum ein weiteres Sicherheitsmerkmal bereitgestellt, welches das bereits vorhandene Sicherheitsmerkmal des winkelabhängigen Informationsfelds ergänzt. Insgesamt ist es besonders vorteilhaft, dass das Informationsfeld mit der optisch variablen Tinte und/oder den transparenten optischen Flüssigkristalleffektpigmenten interagieren kann. So können jeweils Teilmuster bereitgestellt werden, welche sich zu einem Gesamtmuster ergeben. Die transparenten optischen Flüssigkristalleffektpigmente sind insbesondere deshalb vorteilhaft, da sie eben als transparente Pigmente einen geeigneten Hintergrund benötigen und durch die Transparenz das Informationsfeld bzw. die bereitgestellte Information nicht verdecken.According to a further aspect of the present invention, transparent optical liquid crystal effect pigments are applied to the information field in at least one area that has been lasered over the entire surface. This has the advantage that such liquid crystal effect pigments also require an opaque or dark background in order to produce a particularly clear optical effect. Corresponding color pigments are already known from the prior art and are referred to, for example, as STEP colors. According to the invention, these color pigments are used particularly advantageously, and this is precisely the combination with those that are lasered over the entire surface Areas beneficial. A further security feature is thus provided in turn, which supplements the already existing security feature of the angle-dependent information field. Overall, it is particularly advantageous that the information field can interact with the optically variable ink and / or the transparent optical liquid crystal effect pigments. In this way, partial patterns can be provided in each case, which result in an overall pattern. The transparent optical liquid crystal effect pigments are particularly advantageous because, as transparent pigments, they require a suitable background and, due to the transparency, do not obscure the information field or the information provided.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung schafft eine Laserung des Informationsfelds einen Kippeffekt gemäß einer ersten Achse, und die optisch variable Tinte und/oder die transparenten optischen Flüssigkristalleffektpigmente einen Kippeffekt gemäß einer zweiten Achse. Dies hat den Vorteil, dass sich die Sicherheitsmerkmale entsprechend ergänzen und dass, falls der Betrachter das Wertdokument vor sich hält, er bei einem Kippen von rechts nach links einen ersten Kippeffekt wahrnimmt und bei einem Kippen von oben nach unten einen zweiten Kippeffekt wahrnimmt. Somit entsteht also ein komplexes Sicherheitsmerkmal, das in dieser Form nur sehr schwer nachzuarbeiten und somit zu fälschen ist.According to a further aspect of the present invention, lasering the information field creates a tilting effect along a first axis, and the optically variable ink and / or the transparent optical liquid crystal effect pigments create a tilting effect along a second axis. This has the advantage that the security features complement each other accordingly and that, if the viewer holds the document of value in front of him, he perceives a first tilting effect when tilting from right to left and a second tilting effect when tilting from top to bottom. This creates a complex security feature which in this form can only be reworked with great difficulty and is therefore falsified.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung stehen die erste Achse und die zweite Achse orthogonal zueinander. Dies hat den Vorteil, dass die beiden geschaffenen Kippeffekte unabhängig voneinander betrachtet werden können. Wird also das Wertdokument in eine erste Richtung gekippt, so verändert sich nur ein erstes Sicherheitsmerkmal und das zweite Sicherheitsmerkmal bleibt unverändert. Auch dies kann bezüglich der Echtheitsprüfung des Wertdokuments verwendet werden, da dies ebenfalls nur schwer nachzuarbeiten ist.According to a further aspect of the present invention, the first axis and the second axis are orthogonal to one another. This has the advantage that the two tipping effects created can be viewed independently of one another. If the value document is tilted in a first direction, only a first security feature changes and the second security feature remains unchanged. This, too, can relate to the Authentication of the document of value can be used, since this is also difficult to rework.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung weist das Informationsfeld eine Negativschrift auf. Dies hat den Vorteil, dass die bereitgestellte Information beispielsweise als eine Schrift vorliegen kann, die einen Karteninhaber oder eine Nummer ausweist. Bei einer Negativschrift handelt es sich generell um eine Schrift, welche nicht an sich aufgebracht wird, sondern vielmehr wird die Umgebung der Schrift derart eingefärbt, so dass nur noch die nicht-eingefärbte Schrift optisch zurückbleibt. Somit ist eine Negativschrift das Gegenteil des sogenannten Positive-Lettering.According to a further aspect of the present invention, the information field has negative writing. This has the advantage that the information provided can be present, for example, in writing that identifies a cardholder or a number. A negative font is generally a font that is not applied per se, but rather the area around the font is colored in such a way that only the non-colored font remains optically. Thus, negative writing is the opposite of so-called positive lettering.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist die Betrachtungwinkelabhängigkeit kontinuierlich. Dies hat den Vorteil, dass kein binärer Farbwechsel vorliegt, sondern vielmehr kann das bereitgestellte Informationsfeld kontinuierlich seinen Wert von Schwarz nach Weiß bzw. von dunkel nach hell ändern. Somit sind alle Zwischenstufen erfindungsgemäß vorgesehen, insbesondere Graustufen, die bei dem Wechsel von dunkel nach hell entstehen. Hierbei ist wiederum die resultierende Farbgebung abhängig von der Farbe des gewählten Basissubstrats. Bei einem vollständigen Karbonisieren des Informationsfelds bis auf die bereitgestellte Information ist stets davon auszugehen, dass der dunkle Bereich des Informationsfeldes schwarz ist. Somit handelt es sich in diesem Fall tatsächlich um eine Variation bezüglich unterschiedlicher Graustufen.According to a further aspect of the present invention, the viewing angle dependency is continuous. This has the advantage that there is no binary color change, but rather the information field provided can continuously change its value from black to white or from dark to light. All intermediate levels are thus provided according to the invention, in particular gray levels that arise when changing from dark to light. The resulting coloring is again dependent on the color of the selected base substrate. In the case of a complete carbonization of the information field except for the information provided, it must always be assumed that the dark area of the information field is black. Thus, in this case it is actually a matter of a variation with regard to different gray levels.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung liegt das Informationsfeld als ein Multiple Laser Image MLI vor. Dies hat den Vorteil, dass ein bekanntes Produktionsverfahren erfindungsgemäß wiederverwendet werden kann. Ein Multiple Laser Image ist generell ähnlich einem Hologramm und stellt eine Art Kippbild dar. Es basiert auf einem auf die Oberfläche einer Karte geprägten Linsensystem, in dem Teile mit einem Laser geschwärzt werden. Ein Unterschied zum Hologramm besteht darin, dass beim Multiple Laser Image MLI kartenindividuelle Information auf dem Kleinbild dargestellt sind. So lässt sich beispielsweise der Name des Karteninhabers individuell als Kippbild einbringen.According to a further aspect of the present invention, the information field is in the form of a multiple laser image MLI. This has the advantage that a known production method can be reused according to the invention. A multiple laser image is generally similar to a hologram It is based on a lens system embossed on the surface of a card, in which parts are blackened with a laser. One difference to the hologram is that with the Multiple Laser Image MLI, card-specific information is shown on the small image. For example, the cardholder's name can be inserted individually as a tilted image.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist die Linsenanordnung durch eine Oberflächenkontur der Substratschicht geschaffen. Dies hat den Vorteil, dass die Linsenanordnung direkt auf das Substrat aufgebracht werden kann und somit keine gesonderte Schicht notwendig ist. So kann die Linsenstruktur in die Substratschicht eingeprägt werden und somit mit geringem technischen Aufwand hergestellt werden.According to a further aspect of the present invention, the lens arrangement is created by a surface contour of the substrate layer. This has the advantage that the lens arrangement can be applied directly to the substrate and thus no separate layer is necessary. In this way, the lens structure can be embossed into the substrate layer and can thus be produced with little technical effort.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist die Linsenanordnung durch eine gesonderte Schicht geschaffen. Dies hat den Vorteil, dass eine vorgefertigte und speziell eingerichtete gesonderte Schicht bereitgestellt werden kann, die die Linsen aufweist. Hierbei handelt es sich um eine im Wesentlichen transparente Schicht, da der Laser diese Schicht durchdringen muss und zudem die darunterliegende Information nicht abgedeckt werden darf.According to a further aspect of the present invention, the lens arrangement is created by a separate layer. This has the advantage that a prefabricated and specially set up separate layer can be provided which has the lenses. This is an essentially transparent layer, since the laser has to penetrate this layer and the information underneath must not be covered.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist zwischen der Substratschicht und der gesonderten Schicht eine Abstandsschicht zur Einstellung einer Brennweite der Linsenanordnung vorgesehen. Dies hat den Vorteil, dass, falls notwendig, die Linsenanordnung mittels der Zwischenschicht derart beabstandet werden kann, dass sich ein Brennpunkt genau auf der Oberfläche der Substratschicht bildet. Somit können besonders feine Strukturen in die Substratschicht eingebrannt werden. Hierbei ist die Abstandsschicht wiederum transparent, da der Laser durch diese Schicht hindurchdringen muss.According to a further aspect of the present invention, a spacer layer for setting a focal length of the lens arrangement is provided between the substrate layer and the separate layer. This has the advantage that, if necessary, the lens arrangement can be spaced apart by means of the intermediate layer in such a way that a focal point is formed precisely on the surface of the substrate layer. In this way, particularly fine structures can be burned into the substrate layer. Here is the spacer layer again transparent, since the laser has to penetrate through this layer.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist die bereitgestellte Information derart eingebracht, dass diese bei einer Betrachtung orthogonal zu einer Oberfläche des Wertdokuments optisch unsichtbar ist. Dies hat den Vorteil, dass bei einem Übergang der einzelnen Farbwerte ein Zwischenwert eingestellt wird, bei dem der erkennbare Farbwert dem des Substrats entspricht. Somit ist es also möglich, dass der Betrachter auf das Wertdokument blickt und ohne einen Kippeffekt tatsächlich nur das Substrat an sich sieht. Wird hingegen das Wertdokument nach links oder rechts bzw. oben oder unten bewegt, so werden das Informationsfeld bzw. die Sicherheitsmerkmale sichtbar. Auch dies ist besonders schwer nachzuarbeiten und somit ergibt sich ein fälschungssicheres Wertdokument.According to a further aspect of the present invention, the information provided is introduced in such a way that it is optically invisible when viewed orthogonally to a surface of the document of value. This has the advantage that when the individual color values transition, an intermediate value is set at which the recognizable color value corresponds to that of the substrate. It is thus possible for the viewer to look at the value document and actually only see the substrate itself without a tilting effect. If, on the other hand, the value document is moved to the left or right or up or down, the information field or the security features become visible. This is also particularly difficult to rework and thus a forgery-proof document of value results.

Gemäß einem weiteren Aspekt der vorliegenden Erfindung liegt das Wertdokument als eine Passbuchseite, eine Datenseite, eine Kreditkarte, eine Smartcard, ein Sicherheitstoken, eine Banknote und/oder ein kartenförmiger Datenträger vor. Dies hat den Vorteil, dass diverse Anwendungsszenarien der vorliegenden Erfindung abgedeckt werden, wobei das Wertdokument bevorzugt als eine Kreditkarte oder einer Datenseite vorliegt. Bei einer Datenseite handelt es sich beispielsweise um eine laminierte Seite, wie sie auch in einem Passbuch vorhanden ist. So fasst die Datenseite weitere Sicherheitsmerkmale und ist bereits an sich besonders fälschungssicher. Solche Datenseiten werden nicht nur in ein Passbuch integriert, sondern auch in weitere Dokumente, welche besonderen Schutz gegen Fälschung bedürfen.According to a further aspect of the present invention, the value document is present as a passport book page, a data page, a credit card, a smart card, a security token, a bank note and / or a card-shaped data carrier. This has the advantage that various application scenarios of the present invention are covered, the value document preferably being present as a credit card or a data page. A data page is, for example, a laminated page, as it is also present in a passport book. The data page contains further security features and is in itself particularly forgery-proof. Such data pages are not only integrated into a passport book, but also into other documents that require special protection against forgery.

Die Aufgabe wird auch gelöst durch ein Verfahren nach Anspruch 14.The object is also achieved by a method according to claim 14.

Erfindungsgemäß ist es besonders vorteilhaft, dass das Wertdokument mittels des vorgeschlagenen Verfahrens erzeugt wird. So umfasst das Verfahren Verfahrensschritte, welche die strukturellen Merkmale des Wertdokuments schaffen. Das Wertdokument weist somit strukturelle Merkmale auf, welche mittels entsprechender Verfahrensschritte bereitgestellt werden.According to the invention, it is particularly advantageous that the value document is generated by means of the proposed method. The method thus comprises process steps which create the structural features of the value document. The value document thus has structural features which are provided by means of corresponding method steps.

Im Folgenden wird anhand der beigefügten Figuren die Erfindung näher erläutert. Es zeigen:

Fig. 1:
ein Wertdokument mit einer Negativschrift gemäß einem Aspekt der vorliegenden Erfindung;
Fig. 2:
ein Wertdokument mit einem komplexen Sicherheitsmerkmal gemäß einem weiteren Aspekt der vorliegenden Erfindung;
Fig. 3:
ein Wertdokument mit noch einem weiteren Sicherheitsmerkmal gemäß einem Aspekt der vorliegenden Erfindung;
Fig. 4:
ein weiteres Anwendungsbeispiel der vorliegenden Erfindung; und
Fig. 5:
ein schematisches Ablaufdiagramm des schematischen Verfahrens zur Herstellung des Wertdokuments.
The invention is explained in more detail below with reference to the accompanying figures. Show it:
Fig. 1:
a value document with negative writing according to one aspect of the present invention;
Fig. 2:
a value document with a complex security feature according to a further aspect of the present invention;
Fig. 3:
a value document with yet another security feature according to an aspect of the present invention;
Fig. 4:
another application example of the present invention; and
Fig. 5:
a schematic flow diagram of the schematic method for producing the document of value.

In Fig. 1 ist in der oberen Abbildung gezeigt, wie auf einem Wertdokument ein Informationsfeld derart geschaffen wird, dass vollflächig gelasert wird, und lediglich die bereitgestellte Information zurückbleibt. Vorliegend ist das Informationsfeld vollflächig gelasert, wobei der Schriftzug, also die bereitgestellte Information, zurückbleibt. Da dies mittels der vorgeschlagenen Linsenanordnung bereitgestellt wird, ist es möglich, dass die Wiedergabe der bereitgestellten Information betrachtungswinkelabhängig variiert.In Fig. 1 The figure above shows how an information field is created on a value document in such a way that it is lasered over the entire surface and only the information provided remains. In the present case, the information field is lasered over the entire surface, with the lettering, i.e. the information provided, remaining behind. Since this is provided by means of the proposed lens arrangement, it is possible for the reproduction of the information provided to vary as a function of the viewing angle.

Dieses Variieren ist in der unteren Abbildung der Fig. 1 gezeigt. Oben ist ein Kippen von -15° eingezeichnet und unten ein Kippen von +15°. Im Übergangsbereich verschwindet die Schwärzung des Informationsfeldes sowie die bereitgestellte Information. Sodann sind beide Merkmale nicht mehr voneinander zu unterscheiden. Erst bei einem erneuten Kippen wird die Information wieder sichtbar.This variation is shown in the figure below Fig. 1 shown. A tilt of -15 ° is shown at the top and a tilt of + 15 ° at the bottom. In the transition area, the blackening of the information field and the information provided disappear. Then the two characteristics can no longer be distinguished from one another. The information only becomes visible again when it is tilted again.

Fig. 2 zeigt als ein Beispiel sogenannte STEP-Farben oder optisch variable Farben, die auf dem schwarzen Untergrund besonders gut zur Geltung kommen. Ansonsten werden sie sehr transparent und ggf. nicht sichtbar. Somit sind die STEP-Farben ein Beispiel für transparente optische Flüssigkristalleffektpigmente, welche gemäß der vorliegenden Erfindung ein weiteres Sicherheitsmerkmal schaffen. Hierbei ist es besonders vorteilhaft, dass sich dieses Sicherheitsmerkmal mit dem Sicherheitsmerkmal der bereitgestellten Information kombinieren lässt. Fig. 2 shows as an example so-called STEP colors or optically variable colors that come into their own on the black background. Otherwise they will be very transparent and possibly not visible. The STEP colors are thus an example of transparent optical liquid crystal effect pigments which, according to the present invention, create a further security feature. It is particularly advantageous here that this security feature can be combined with the security feature of the information provided.

Fig. 3 zeigt ein weiteres Anwendungsbeispiel, wobei das weitere Sicherheitsmerkmal nicht als eine Schrift vorliegt, sondern vielmehr sind die STEP-Farben vollflächig aufgebracht. Dies ist insbesondere deshalb vorteilhaft, da die STEP-Farben auf dem dunklen Hintergrund besonders gut zur Geltung kommen und somit ein besonders deutlicher optischer Effekt eintritt, der eben auch mit dem unbewaffneten Auge erkennbar ist. Fig. 3 shows a further application example, the further security feature not being present as a font, but rather the STEP colors are applied over the entire surface. This is particularly advantageous because the STEP colors are particularly effective on the dark background and thus a particularly clear optical effect occurs, which can also be seen with the naked eye.

Fig. 4 zeigt ein weiteres Beispiel, wobei nunmehr eine optisch variable Tinte Einsatz findet, eine sogenannte Optical Variable Ink OVI. Wie in der oberen Figur ersichtlich ist, kann hierbei besonders vorteilhaft ein Farbübergang geschaffen werden, und es erfolgt wiederum ein kontinuierlicher Wechsel von einer ersten Farbe hin zu einer zweiten Farbe und wiederum zurück zur ersten Farbe. Fig. 4 shows a further example, an optically variable ink now being used, a so-called optical variable ink OVI. As can be seen in the figure above, a color transition can be created particularly advantageously, and there is again a continuous change from a first color to a second color and again back to the first color.

Dies ist in der vorliegenden Fig. 4 auch unten dargestellt, wobei nunmehr die Negativschrift in ihrer Farbe variiert. Ebenso sind die entsprechenden Kippachsen eingezeichnet, welche im vorliegenden Beispiel orthogonal zueinander stehen.This is in the present Fig. 4 also shown below, with the negative writing now varying in color. The corresponding tilt axes, which are orthogonal to one another in the present example, are also shown.

Fig. 5 zeigt ein schematisches Ablaufdiagramm eines Verfahrens zum Herstellen eines Wertdokuments mit optischem Sicherheitsmerkmal, umfassend ein Bereitstellen 100 einer Substratschicht zur Schaffung eines Dokumentkörpers, wobei ein Informationsfeld oberflächlich in die Substratschicht eingebracht 101 wird, welches bis auf eine bereitgestellte Information vollflächig mittels Laser derart durch eine Linsenanordnung auf der Substratschicht geschaffen wird, dass eine graphische Wiedergabe der bereitgestellten Information betrachtungswinkelabhängig variiert. Fig. 5 shows a schematic flowchart of a method for producing a document of value with an optical security feature, comprising providing 100 a substrate layer to create a document body, an information field being introduced 101 superficially into the substrate layer, which except for information provided over the entire area by means of a laser through a lens arrangement the substrate layer is created so that a graphic representation of the information provided varies as a function of the viewing angle.

Durch die Laserung des kompletten MLI-Feldes unter einem bestimmten Winkel kann eine inverse Laserpersonalisierung erzeugt werden. Zunächst erfolgt dies in Schwarz-Weiß. In einer Ausbaustufe kann man sich bestimmte Eigenschaften von STEP-Farben bzw. OVI-Farben zunutze machen. Diese Art von Farben enthalten Pigmente bzw. Farbstoffe, welche erst optisch voll zur Geltung kommen, wenn der Untergrund möglichst dunkel ist. Das heißt, eine Kombination von flächiger Schwarzlaserung und solcher entsprechender Farben bewirkt ein farbiges "Flip-Flop".By lasering the entire MLI field at a certain angle, an inverse laser personalization can be created. First of all, this is done in black and white. In an expansion stage, certain properties of STEP colors or OVI colors can be used. These types of colors contain pigments or dyes, which only come into their full optical advantage when the background is as dark as possible. That is, a combination of flat black lasering and such corresponding colors results in a colored "flip-flop".

Claims (14)

  1. A value document having an optical security feature, comprising:
    - a substrate layer for creating a document body,
    - an information field is introduced superficially into the substrate layer, which is created by means of a laser by a lens arrangement, which is located on the substrate layer, such that a graphical reproduction of a supplied information item varies depending on the viewing angle, characterized in that the information field is created over the full area except for the supplied information.
  2. The value document according to claim 1, characterized in that an optically variable ink is applied to the information field in at least one region lasered over the full area.
  3. The value document according to claim 1 or 2, characterized in that transparent optical liquid-crystal effect pigments are applied to the information field in at least one region lasered over the full area.
  4. The value document according to any of claims 2 or 3, characterized in that a lasering of the information field creates a tilt effect according to a first axis and the optically variable ink and/or the transparent optical liquid-crystal effect pigments create a tilt effect according to a second axis.
  5. The value document according to claim 4, characterized in that the first axis and the second axis are orthogonal to each other.
  6. The value document according to any of the previous claims, characterized in that the information field has a negative script.
  7. The value document according to any of the previous claims, characterized in that the viewing angle dependence is continuous.
  8. The value document according to any of the previous claims, characterized in that the information field is present as a multiple laser image, MLI.
  9. The value document according to any of the previous claims, characterized in that the lens arrangement is created by a surface contour of the substrate layer.
  10. The value document according to any of claims 1 to 8, characterized in that the lens arrangement is created by a separate layer.
  11. The value document according to claim 10, characterized in that a spacer layer for adjusting a focal length of the lens arrangement is provided between the substrate layer and the separate layer.
  12. The value document according to any of the previous claims, characterized in that the supplied information item is introduced such that it is optically invisible when viewed orthogonally to a surface of the value document.
  13. The value document according to any of the previous claims, characterized in that the value document is present as a passport booklet page, a data page, a credit card, a smart card, a security token, a bank note and/or a card-shaped data carrier.
  14. A method for manufacturing a value document having an optical security feature, comprising:
    - a supplying (100) of a substrate layer for creating a document body, wherein
    - an information field is superficially introduced (101) into the substrate layer which, except for a supplied information item, is created over the full area by means of laser by a lens arrangement, which is located on the substrate layer, such that a graphical reproduction of the supplied information item varies depending on the viewing angle.
EP19000326.9A 2018-07-12 2019-07-08 Valuable document having optical security feature Active EP3594012B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018005551.6A DE102018005551A1 (en) 2018-07-12 2018-07-12 Security document with optical security feature

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DE (1) DE102018005551A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH672687A5 (en) 1987-11-20 1989-12-15 Lipatec Ets
EP2050574B1 (en) * 2007-09-27 2009-09-02 FOBA Technology & Services GmbH Method and device for scribing a kinegram structure
DE102010054854A1 (en) 2010-12-17 2012-06-21 Giesecke & Devrient Gmbh Structured Colorshift security element
FR2976954B1 (en) * 2011-06-23 2013-07-12 Arjowiggins Security SECURITY WIRE
GB201208137D0 (en) * 2012-05-10 2012-06-20 Rue De Int Ltd Security devices and methods of manufacture therefor
ES2959453T3 (en) * 2014-03-27 2024-02-26 Visual Physics Llc An optical device that produces flicker-like optical effects
MX2018014616A (en) 2016-06-03 2019-05-20 Veridas Digital Authentication Solutions S L A method for authenticating a document.

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DE102018005551A1 (en) 2020-01-16

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