EP3446884B1 - Cryptographic morphological security feature - Google Patents

Cryptographic morphological security feature Download PDF

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Publication number
EP3446884B1
EP3446884B1 EP17001429.4A EP17001429A EP3446884B1 EP 3446884 B1 EP3446884 B1 EP 3446884B1 EP 17001429 A EP17001429 A EP 17001429A EP 3446884 B1 EP3446884 B1 EP 3446884B1
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EP
European Patent Office
Prior art keywords
rasters
security feature
grid
colour
film material
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EP17001429.4A
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German (de)
French (fr)
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EP3446884A1 (en
Inventor
Peter Reich
Tanja Rittner
Andreas Reil
Manuela Meindl
Udo Kroczynski
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.)
Constantia Pirk GmbH and Co KG
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Constantia Pirk GmbH and Co KG
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Application filed by Constantia Pirk GmbH and Co KG filed Critical Constantia Pirk GmbH and Co KG
Priority to EP17001429.4A priority Critical patent/EP3446884B1/en
Priority to PCT/EP2018/000343 priority patent/WO2019037886A1/en
Publication of EP3446884A1 publication Critical patent/EP3446884A1/en
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Publication of EP3446884B1 publication Critical patent/EP3446884B1/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
    • B42D25/30—Identification or security features, e.g. for preventing forgery

Definitions

  • the invention relates to a cryptic morphological security feature which can be used as a security element in documents of value and in particular packaging, as well as packaging which has this security feature.
  • the object of the invention was therefore to provide a security feature that can be integrated into an existing design of a packaging without changing the design optically when viewed with the naked eye, but which offers increased protection against forgery and in which a forgery can be proven beyond doubt. Neither the color scheme nor the motif of the design should be optically changed.
  • the document DE 10 2005 027 068 A1 discloses a security feature wherein one color separation has a different raster than another color separation.
  • the invention therefore relates to a security feature according to claim 1.
  • the invention also relates to film materials which have this security feature, as well as packaging for products made therefrom.
  • colored representations are printed on a film material or on packaging made from it as a halftone image in the CYMK system as a dot matrix.
  • individual colors of the CYMK system can also be defined as spot colors, e.g. Magenta than red.
  • this color separation can be represented, for example, partially as a point grid and partially, for example, as a line grid.
  • Other grid shapes are also possible, for example stochastic or frequency-modeled grids. All possible grid combinations are conceivable.
  • One of the color separations is selected from a color image, which in the CYMK system consists of cyan, magenta, yellow and black.
  • This color separation has tone values from 1 to 100%.
  • a tone value of this extract is split into two parts.
  • a part of the tonal value is preferably printed as a dot matrix and the second part of the tonal value is printed as a line matrix.
  • a tone value of 30% of the magenta color separation is selected, this is printed in a defined ratio, partly as a dot grid and partly as a line grid. Divisions of 15% point grids and 15% line grids, but also, for example, 20% point grids, 10% line grids or 19% point grids and 11% line grids or the like are possible.
  • This division of the shares is defined and referred to as a cryptic key.
  • the color separation is distributed on point or line grids. This means that encrypted information is stored with the motif.
  • a linear division of the color separation (of the color separation) is not carried out, as described above, but a division that is defined in regions and the associated assignment of the density values of the individual raster separations.
  • Grid 1 corresponds to the point grid and grid 2 to the line grid.
  • a system value of 0 corresponds to a 100% tone area
  • a system value of 225 corresponds to a 0% tone area.
  • the separation area in the low tone range of 100 - 70% is only formed by a point grid (grid 1, 3).
  • the cryptic key defines a division into point and line grids (grids 2, 4).
  • the implementation in this tone range is not linear.
  • the percentage distribution (2) of the screen tones between the two screen forms dot and line screen is defined by a curve function in this area. The frequency and the amplitude of the function then form the variables or the distribution key that defines the execution of grid 1 and grid 2.
  • Such a curve description by system values (1) enables an optimized implementation (smoothing) of the rasterization.
  • the tonal value of a screen changed by the curve function is filled up to the linear target value by the second screen
  • Both grid separations can either be merged into one grid extract. Alternatively, they can be used as standalone separations. The coloring of the corresponding separations can then be variable.
  • CMYK complementary metal-oxide-semiconductor
  • the starting point and the end point of the division of the grids and the allocation to one another are thus determined in a table that is only known to the producer of the packaging during production and can be used by him.
  • the carrier substrate for the film materials provided with the security feature according to the invention are, for example, carrier films, preferably flexible plastic films, for example made of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in question.
  • carrier films preferably have a thickness of 5-700 ⁇ m, preferably 8-200 ⁇ m, particularly preferably 12-50 ⁇ m.
  • metal foils for example Al, Cu, Sn, Ni, Fe or stainless steel foils with a thickness of 5-200 ⁇ m, preferably 5 to 80 ⁇ m, particularly preferably 5-50 ⁇ m, can also serve as the carrier substrate.
  • the films can also be surface-treated, coated or laminated, for example with plastics or lacquered.
  • carrier substrates also paper or composites with paper, for example, composites with plastics with a basis weight of 20 - 500 g / m 2, preferably 40th
  • the motif is printed on this carrier substrate as described above, all conventional printing processes, such as, for example, gravure printing, flexographic printing, screen printing, offset printing, and digital printing methods, being possible.
  • the security element according to the invention is used in the form of films or labels, in particular on the packaging of products, bottles, containers and the like.

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  • Wrappers (AREA)
  • Printing Methods (AREA)

Description

Die Erfindung betrifft ein kryptisches morphologisches Sicherheitsmerkmal, das als Sicherheitselement in Wertdokumenten und insbesondere Verpackungen eingesetzt werden kann, sowie Verpackungen, die dieses Sicherheitsmerkmal aufweisen.The invention relates to a cryptic morphological security feature which can be used as a security element in documents of value and in particular packaging, as well as packaging which has this security feature.

Der Fälschungsschutz von Verpackungen, insbesondere bei Markenprodukten, wird mit Zunahme der Fälschungen immer wichtiger.The counterfeit protection of packaging, especially for branded products, is becoming more and more important with the increase in counterfeiting.

Erfolgreich am Markt platzierte Verpackungen von Gütern, wie beispielsweise Lebensmitteln, Textilen, Schuhe, elektronische Bauteile oder Produkte und dergleichen sollen durch neue Sicherheitsmerkmale, die erhöhten Schutz vor Fälschungen bieten, jedoch nicht verändert werden, um den Wiedererkennungswert des Produkts oder der Marke nicht zu beeinträchtigen.Packaging of goods that have been successfully placed on the market, such as food, textiles, shoes, electronic components or products and the like, should not be changed by new security features that offer increased protection against counterfeiting in order not to impair the recognition value of the product or brand .

Aufgabe der Erfindung war es daher ein Sicherheitsmerkmal bereitzustellen, das in ein bestehendes Design einer Verpackung integriert werden kann, ohne das Design optisch bei Betrachtung mit freiem Auge zur verändern, das jedoch einen erhöhten Fälschungsschutz bietet und bei dem eine Fälschung zweifelsfrei nachgewiesen werden kann. Dabei soll weder die farbliche Gestaltung noch das Motiv des Designs optisch verändert werden.The object of the invention was therefore to provide a security feature that can be integrated into an existing design of a packaging without changing the design optically when viewed with the naked eye, but which offers increased protection against forgery and in which a forgery can be proven beyond doubt. Neither the color scheme nor the motif of the design should be optically changed.

Das Dokument DE 10 2005 027 068 A1 offenbart ein Sicherheitsmerkmal, wobei eine Farbseparation ein anderes Raster als eine andere Farbseparation aufweist.The document DE 10 2005 027 068 A1 discloses a security feature wherein one color separation has a different raster than another color separation.

Gegenstand der Erfindung ist daher ein Sicherheitsmerkmal nach Anspruch 1.The invention therefore relates to a security feature according to claim 1.

Ein weiterer Gegenstand der Erfindung sind Folienmaterialen, die dieses Sicherheitsmerkmal aufweisen, sowie daraus hergestellte Verpackungen für Produkte.The invention also relates to film materials which have this security feature, as well as packaging for products made therefrom.

Üblicherweise werden farbige Darstellungen auf einem Folienmaterial bzw. auf einer daraus hergestellten Verpackung als Halbtonbild im CYMK-System als Punktraster gedruckt. Es können aber auch einzelne Farben des CYMK-Systems als Spotcolor definiert sein z.B. Magenta als Rot.Usually, colored representations are printed on a film material or on packaging made from it as a halftone image in the CYMK system as a dot matrix. However, individual colors of the CYMK system can also be defined as spot colors, e.g. Magenta than red.

Erfindungsgemäß wird nun beispielsweise eine Farbseparation des CYMK-Systems mit zwei unterschiedlichen Rastern dargestellt. So kann erfindungsgemäß diese Farbseparation beispielsweise teilweise als Punktraster und teilweise beispielsweise als Linienraster dargestellt werden. Es sind auch andere Rasterformen möglich, beispielsweise stochastische oder frequenzmodellierte Raster. Es sind dabei alle möglichen Rasterkombinationen denkbar.According to the invention, a color separation of the CYMK system is now shown with two different grids, for example. Thus, according to the invention, this color separation can be represented, for example, partially as a point grid and partially, for example, as a line grid. Other grid shapes are also possible, for example stochastic or frequency-modeled grids. All possible grid combinations are conceivable.

Von einem Farbbild, das im CYMK-System aus Cyan, Magenta, Gelb und Schwarz besteht wird einer der Farbauszüge ausgewählt.One of the color separations is selected from a color image, which in the CYMK system consists of cyan, magenta, yellow and black.

Dieser Farbauszug weist Tonwerte von 1 bis 100% auf.This color separation has tone values from 1 to 100%.

Erfindungsgemäß wird ein Tonwert dieses Auszugs in zwei Teile gesplittet. Vorzugsweise wird ein Teil des Tonwertes als Punktraster, der zweite Teil des Tonwertes als Linienraster gedruckt.According to the invention, a tone value of this extract is split into two parts. A part of the tonal value is preferably printed as a dot matrix and the second part of the tonal value is printed as a line matrix.

Wird beispielsweise ein Tonwert von 30% des Farbauszugs Magenta ausgewählt, so wird dieser in einem definierten Verhältnis zum Teil als Punktraster und zum Teil als Linienraster gedruckt. Möglich sind dabei Aufteilungen von 15% Punktraster und 15 % Linienraster, aber auch beispielsweise 20 % Punktraster, 10 % Linienraster oder 19 % Punktraster und 11% Linienraster oder dergleichen.If, for example, a tone value of 30% of the magenta color separation is selected, this is printed in a defined ratio, partly as a dot grid and partly as a line grid. Divisions of 15% point grids and 15% line grids, but also, for example, 20% point grids, 10% line grids or 19% point grids and 11% line grids or the like are possible.

Diese Aufteilung der Anteile wird als kryptischer Schlüssel definiert und bezeichnet. In Abhängigkeit dieses Schlüssels erfolgt die Verteilung des Farbauszugs auf Punkt- bzw. Linienraster. Dadurch wird dem Motiv eine verschlüsselte Information hinterlegt.This division of the shares is defined and referred to as a cryptic key. Depending on this key, the color separation is distributed on point or line grids. This means that encrypted information is stored with the motif.

In einer weiteren Ausführungsform wird nicht eine, wie oben beschrieben, lineare Aufteilung der Farbseparation (des Farbauszugs) vorgenommen, sondern eine bereichsweise festgelegte Aufteilung und die damit auch verbundene Zuordnung der Dichtewerte der einzelnen Rasterseparationen.In a further embodiment, a linear division of the color separation (of the color separation) is not carried out, as described above, but a division that is defined in regions and the associated assignment of the density values of the individual raster separations.

In Figur 1 ist eine derartige Aufteilung dargestellt.In Figure 1 such a division is shown.

Raster 1 entspricht dabei dem Punktraster und Raster 2 dem Linienraster.
Ein Systemwert 0 entspricht einer 100% Tonfläche, ein Systemwert von 225 entspricht einer 0% Tonfläche.Grid 1 corresponds to the point grid and grid 2 to the line grid.
A system value of 0 corresponds to a 100% tone area, a system value of 225 corresponds to a 0% tone area.

In dem in Figur 1 dargestellten Beispiel ist der Separationsbereich im Tiefentonbereich von 100 - 70% nur durch ein Punktraster (Raster 1, 3) gebildet.
Ab dem, Mitteltonbereich, also ab 70% bis etwa 20% wird durch den kryptischen Schlüssel eine Aufteilung in Punkt- und Linienraster (Raster 2, 4) definiert. Die Umsetzung in diesem Tonbereich ist nicht linear. Die prozentuale Aufteilung (2) der Rastertöne zwischen den beiden Rasterformen Punkt- und Linienraster, wird durch eine Kurvenfunktion in diesem Bereich definiert. Die Frequenz sowie die Amplitude der Funktion bilden dann die Variablen bzw. dem Verteilungsschlüssel, der die Ausführung der Raster 1 und Raster 2 definiert.In the in Figure 1 In the example shown, the separation area in the low tone range of 100 - 70% is only formed by a point grid (grid 1, 3).
From the mid-tone range, i.e. from 70% to around 20%, the cryptic key defines a division into point and line grids (grids 2, 4). The implementation in this tone range is not linear. The percentage distribution (2) of the screen tones between the two screen forms dot and line screen is defined by a curve function in this area. The frequency and the amplitude of the function then form the variables or the distribution key that defines the execution of grid 1 and grid 2.

Eine derartige Kurvenbeschreibung durch Systemwerte (1) ermöglicht eine optimierte Umsetzung (Glättung) der Rasterung. Der durch die Kurvenfunktion veränderte Tonwert eines Rasters wird durch den zweiten Raster jeweils zum linearen Sollwert aufgefülltSuch a curve description by system values (1) enables an optimized implementation (smoothing) of the rasterization. The tonal value of a screen changed by the curve function is filled up to the linear target value by the second screen

Beide Rasterseparationen können entweder zu einem Rasterauszug zusammengelegt werden. Alternativ können sie als eigenständige Separationen verwendet werden. Dabei kann dann die Färbung der entsprechenden Separationen variabel sein.Both grid separations can either be merged into one grid extract. Alternatively, they can be used as standalone separations. The coloring of the corresponding separations can then be variable.

Im Lichterbereich der Farbseparation im Bereich von 20% bis 0% erfolgt die Separationsmodulation wieder alleine durch den Punktrasterdruck.
Bei anderen Raster- oder Schlüsselkombinationen sind andere Zuordnungsbereiche zu definieren.In the highlight area of the color separation in the range from 20% to 0%, the separation modulation takes place again solely through the dot matrix printing.
For other grid or key combinations, other allocation areas must be defined.

Ferner ist es erfindungsgemäß möglich eine Aufteilung der Skalenfarben des CMYK -Systems vorzunehmen, beispielsweise Cyan-Light/Cyan oder Magenta-Light/Magenta. Dadurch ist eine optimierte Farbumsetzung für spezielle Anwendungszwecke möglich.
Eine Fälschung ist bei einer derartigen Ausführungsform aufgrund der Komplexität der Aufteilung in Punkt- und Strichraster nahezu unmöglich.According to the invention, it is also possible to divide the process colors of the CMYK system, for example cyan light / cyan or magenta light / magenta. This enables an optimized color conversion for special applications.
In such an embodiment, forgery is almost impossible due to the complexity of the division into dot and line screens.

Damit ist der Einsatz- und der Abschlusspunkt der Aufteilung der Raster und die Zuteilung zueinander in einer Tabelle festgelegt, die in der Herstellung nur dem Erzeuger der Verpackung bekannt ist und von diesem genutzt werden kann.The starting point and the end point of the division of the grids and the allocation to one another are thus determined in a table that is only known to the producer of the packaging during production and can be used by him.

Dadurch wird die Fälschungssicherheit des Folienmaterials bzw. der Verpackung deutlich erhöht.This significantly increases the security against forgery of the film material or the packaging.

Als Trägersubstrat für die, mit dem erfindungsgemäßen Sicherheitsmerkmal versehenen Folienmaterialen kommen beispielsweise Trägerfolien vorzugsweise flexible Kunststofffolien, beispielsweise aus PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in Frage. Die Trägerfolien weisen vorzugsweise eine Dicke von 5 - 700 µm, bevorzugt 8 - 200 µm, besonders bevorzugt 12 - 50 µm auf.The carrier substrate for the film materials provided with the security feature according to the invention are, for example, carrier films, preferably flexible plastic films, for example made of PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in question. The carrier films preferably have a thickness of 5-700 μm, preferably 8-200 μm, particularly preferably 12-50 μm.

Ferner können als Trägersubstrat auch Metallfolien, beispielsweise Al-, Cu-, Sn-, Ni-, Fe- oder Edelstahlfolien mit einer Dicke von 5 - 200 µm, vorzugsweise 5 bis 80 µm, besonders bevorzugt 5- 50 µm dienen. Die Folien können auch oberflächenbehandelt, beschichtet oder kaschiert, beispielsweise mit Kunststoffen oder lackiert sein.Furthermore, metal foils, for example Al, Cu, Sn, Ni, Fe or stainless steel foils with a thickness of 5-200 μm, preferably 5 to 80 μm, particularly preferably 5-50 μm, can also serve as the carrier substrate. The films can also be surface-treated, coated or laminated, for example with plastics or lacquered.

Ferner können als Trägersubstrate auch Papier oder Verbunde mit Papier, beispielsweise Verbunde mit Kunststoffen mit einem Flächengewicht von 20 - 500 g/m2, vorzugsweise 40 - 200 g/m2 verwendet werden.200 g / m 2 is used - Further, as the carrier substrates also paper or composites with paper, for example, composites with plastics with a basis weight of 20 - 500 g / m 2, preferably 40th

Das Motiv, wird wie oben beschrieben auf diesem Trägersubstrat aufgedruckt, wobei alle üblichen Druckverfahren, wie beispielsweise Tiefdruck-, Flexodruck-, Siebdruck-, Offsetdruck-, Digitaldruckverfahren in Frage kommen.The motif is printed on this carrier substrate as described above, all conventional printing processes, such as, for example, gravure printing, flexographic printing, screen printing, offset printing, and digital printing methods, being possible.

Das erfindungsgemäße Sicherheitselement wird in Form von Folien oder Etiketten insbesondere auf Verpackungen von Produkten, Flaschen, Container und dergleichen verwendet.The security element according to the invention is used in the form of films or labels, in particular on the packaging of products, bottles, containers and the like.

Claims (7)

  1. Security feature, in particular for packagings, characterised in that a colour separation of a defined coloured region of a motif is formed by two different rasters, the proportions of which are defined by a cryptic key, wherein a colour component having tonal values from 1 to 100% is selected from a colour image which exists in the CYMK system, wherein this tonal value of this colour component is split into two parts which are printed as different rasters, wherein the two different rasters are selected from the group comprising dot rasters, line rasters, bar rasters, stochastic rasters and frequency-modulated rasters.
  2. Security feature according to claim 1, characterised in that a colour separation is formed by a dot raster and a bar raster.
  3. Security feature according to one of claims 1 to 2, characterised in that the cryptic key is formed by a linear distribution of the proportions of the two rasters.
  4. Security feature according to one of claims 1 to 2, characterised in that the cryptic key is formed by a curve function.
  5. Film material having a security feature according to one of claims 1 to 4.
  6. Packaging produced from a film material according to claim 5.
  7. Security labels for products such as bottles, containers, etc. produced from a film material according to claim 5.
EP17001429.4A 2017-08-24 2017-08-24 Cryptographic morphological security feature Active EP3446884B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17001429.4A EP3446884B1 (en) 2017-08-24 2017-08-24 Cryptographic morphological security feature
PCT/EP2018/000343 WO2019037886A1 (en) 2017-08-24 2018-07-05 Cryptic morphologic safety feature

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17001429.4A EP3446884B1 (en) 2017-08-24 2017-08-24 Cryptographic morphological security feature

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EP3446884A1 EP3446884A1 (en) 2019-02-27
EP3446884B1 true EP3446884B1 (en) 2020-10-28

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WO (1) WO2019037886A1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4402723A1 (en) * 1994-01-29 1995-08-03 Dmc Design Marketing Communica Half-tone image reproduction method e.g. for DTP
DE69531142T2 (en) * 1994-12-28 2004-05-13 Fuji Photo Film Co., Ltd., Minami-Ashigara Image recording method
DE10018316C1 (en) * 2000-04-13 2001-10-18 Galaxy Media Syst Werbemittel Multiple printing method for transparent material has over-printing of similar ink colors used for providing high color intensity image
DE102005027068A1 (en) * 2005-06-11 2006-12-14 Man Roland Druckmaschinen Ag Raster method, e.g. for multicolor printing, involves analyzing print image in color separations for printing colors, and using amplitude modulated rastering for one separation and frequency modulated rastering for other separations

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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WO2019037886A1 (en) 2019-02-28

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