EP1432592B1 - Method for individualising security documents and corresponding security document - Google Patents

Method for individualising security documents and corresponding security document Download PDF

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Publication number
EP1432592B1
EP1432592B1 EP02779379A EP02779379A EP1432592B1 EP 1432592 B1 EP1432592 B1 EP 1432592B1 EP 02779379 A EP02779379 A EP 02779379A EP 02779379 A EP02779379 A EP 02779379A EP 1432592 B1 EP1432592 B1 EP 1432592B1
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EP
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Prior art keywords
printed image
documents
document
security
group
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EP02779379A
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German (de)
French (fr)
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EP1432592A1 (en
Inventor
Michael Bauer
Werner Bochmann
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Giesecke and Devrient GmbH
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Giesecke and Devrient GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/10—Intaglio printing ; Gravure printing

Definitions

  • the invention relates to a method for individualizing security documents as well as to a corresponding security document and a group of individualized security documents, wherein a first print image, which may be identical for a group of documents, with a second print image, which for subgroups of this group or for any document thereof Group may be different, at least partially overprinted.
  • a multi-layered ID card which contains an application-neutral, high-quality security printed image, for example a steel gravure printed guilloche pattern on a paper substrate to which user-related data, such as a photograph or other individualizing data, are directly copied by means of an electrophotographic process to this Data insoluble and unalterable to connect to the paper substrate.
  • This substrate is then laminated with transparent cover sheets to form the badge.
  • the procedure may also be used in connection with other documents, securities, shares, etc. that need to be backed up.
  • Data pages of passports and visa stickers are often provided with non-variable imprints produced by intaglio printing.
  • the headers and names of a country are indicated in the header of these documents, but they are not overprinted, since otherwise they could be at least partially obscured by the overprint.
  • Individual and / or user-related data are therefore printed at other locations, for example by means of a laser printer, type wheel or inkjet printer.
  • an individualizing print image is printed by means of a printing ink which is flowable at least at the moment of the printing operation.
  • the printing ink rolls off the intaglio ink and deposits in places where there is no intaglio ink.
  • the printed image produced in the intaglio printing process thus remains completely visible and forms fine lines within the individualizing printed image produced with printing ink.
  • the fine lines do not significantly affect the information content of the individualizing print image, even if the individualizing print image is a reproduction of a photographic portrait, for example of the document holder - referred to below as a photographic image.
  • the individualizing print image is only interrupted, as viewed under the magnifying glass, by the structures produced in intaglio printing, with the details becoming apparent only when viewed through a magnifying glass. Such superimposed structures can hardly be falsified.
  • an inkjet printing process also called inkjet process
  • This process is inexpensive and uses printing inks that are repelled by the usual steel gravure inks.
  • Another suitable method is a digital printing process developed by Indigo BV / Netherlands (also referred to herein as an indigo printing process). In this method, electrically charged color particles dispersed in a liquid are applied to a substrate by means of electric fields.
  • the Indigo process delivers print quality as good as offset printing however, a continuous change of print motifs too. Since the print motifs can also be individual data reproducing characters, this digital printing method is particularly suitable for the individualization of documents.
  • the method according to the invention can be applied to all security documents which have an application-neutral, consisting of contrasting light and dark areas existing print image (especially a gravure image), wherein either the light or the dark areas of the printed image on the ink of an above printed, individualizing Print image have a repulsive effect, so that the ink of the individualizing printed image essentially deposited only in the corresponding other areas.
  • an application-neutral consisting of contrasting light and dark areas existing print image (especially a gravure image)
  • a gravure image especially a gravure image
  • the areas in which the printing ink is deposited are preferably unprinted substrate areas, since unprinted substrate areas, in particular in the case of a paper substrate, for example a normal security paper, are particularly suitable for receiving printing ink.
  • the substrate it is also possible for the substrate to be a material which repels the printing ink of the individualizing printed image, for example printing ink on a plastic substrate, but the same printing ink is applied to the regions of the printed material application-neutral printed image very well liable. In an application-neutral print image printed on a light substrate with dark ink, this results in the application-neutral print image acting as a negative in its overprinted part.
  • the individualizing print image may include one or more individualizing information, such as a serial number (serial number), a photograph and / or personal data of the document holder in plain text and / or the same or other data in the form of a machine readable barcode.
  • serial number serial number
  • photograph and / or personal data of the document holder in plain text and / or the same or other data in the form of a machine readable barcode.
  • Fig. 1a 1 schematically shows a document comprising a substrate 3 with a first print 1.
  • This print 1 is a high-quality print image which is identical for a large number of security documents, for example identically for the pages of a passport document of a particular nation or, for example, all visa stickers used for a particular nation.
  • this is a uniform basic pattern produced in the intaglio printing process, in the case of industrially applied processes, typically in the steel-piercing process. But it can just as well be an informative printed image, such as the portrait of a known personality, as it is known from banknotes.
  • the intaglio printing process is often used for the production of high-quality printed products for counterfeiting, since the printing plate production is very complex and expensive and can be produced with this method a very characteristic print image with tactile shares that can not be imitated by other printing processes.
  • depressions are engraved as engraving areas, typically in the form of lines.
  • the engraving areas of the printing plate are filled with paint.
  • the excess paint is removed from the printing plate with the help of a wiper cylinder or a squeegee so that only the engraving lines remain filled with ink. By this wiping so all color components are removed on the printing plate surface.
  • a counter-pressure cylinder with elastic surface is then to printing substrate, usually paper, pressed with high pressure on the printing plate.
  • the document is in this case pressed into the filled with pasty color engraving areas of the printing plate and comes so in contact with the ink. When removing the disk, this pulls the ink out of the recesses of the engraving lines.
  • the printed image thus obtained has printing areas that vary depending on the depth of the engraving in the ink layer thickness. If lithographic printing inks are used in intaglio printing, a light color tone is obtained when printing a light-colored, in particular a white, medium-density medium, and stronger, darker shades when printing with thick layer thicknesses. Compared to other common printing processes, the gravure printing process can produce print images with relatively large and different ink layer thicknesses. From a safety point of view, this offers the advantage that the printed images thus generated can be felt manually when using correspondingly deep engravings. By using particularly fine engravings, extremely fine, extremely sharp printing lines can be realized.
  • In 1b shows is a section of the document 1a shown in cross section.
  • the substrate is a typical security paper, possibly also with watermarks.
  • the printed image 1 is composed of unprinted areas 1a and areas 1b printed with intaglio printing ink.
  • the color of the printed areas 1 b contrasts with the color of the unprinted areas 1 a, which is typically white in the case of a non-colored substrate 3.
  • In 1b shows is also the typical tactile structure of a printed by intaglio printing paper substrate to recognize on which one side of the withdrawn from the engraving areas ink is. By impressing the substrate by means of the elastic Pressure cylinder in the engraving areas of the printing plate, the printed areas 1b on the corresponding opposite side of the substrate a little pressed.
  • first print image 1 is then individualized by a second print image is printed in the inkjet printing process on the first print image, as in Fig. 2a in supervision and in Fig. 2b is shown in cross section.
  • the individualizing imprint is "INKJET" in the exemplary embodiment. It can be printed with black or colored printing ink. Instead of the imprint "INKJET", the individualizing imprint 2 could, for example, also be personal personal data or a multicolored or black-and-white photograph.
  • Fig. 2b shows the layer structure of the document Fig. 2a the first and second areas 1a, 1b of the first print image 1 are first completely overprinted using a Canon BJC7100 ink jet printer with a commercial black ink cartridge. Due to the repulsive effect of the intaglio printing ink on the printing ink of the individualizing printed image 2, the printing ink flows laterally from the intaglio printing ink and deposits in the unprinted interspaces 1a. This process is in Fig. 2b indicated by double arrows. It then results in a material distribution as in Fig. 3b shown, after which the printing ink of the individualizing print image 2 only the areas 1a of the substrate 3 colors, which had remained unprinted in printing the first printed image 1 in the intaglio printing.
  • Fig. 3a shows in magnification this effect on the basis of the letter "K" of the individualizing print image 2 in supervision.
  • the printed image 1 applied in the intaglio printing process here forms a regular background pattern, for example in red on a white background.
  • the unprinted intermediate areas of the background pattern 1 are filled with black printing ink and the contrasting lighter red color of the background pattern remains visible in the individualizing print image visually and without any aids.
  • Such a combination of two superimposed print images one of which is tactile, ensures high protection against counterfeiting, since it is not reproducible with simple conventional printing techniques or color copiers. It can also be checked by non-specialists without complex aids and unauthorized subsequent changes and manipulations on the individual print image 2, for example by etching or covering, are easily recognizable by the almost inevitable change in the printed image 1.

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  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)
  • Facsimile Transmission Control (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

A method for individualizing security documents provides that high security quality, application-neutral printed image 1 identical for a group of security documents is overprinted with second printed image 2 individualizing the security document, whereby the printing ink of second printed image 2 is repelled by the printing ink of first printed image 1. The printing ink of the second printed image is therefore deposited only in the areas of the first printed image where no printing ink of the first printed image is present. Preferably, the first printed image is produced by intaglio printing and the second printed image by means of liquid printing ink, in particular by the ink jet method.

Description

Die Erfindung betrifft ein Verfahren zur Individualisierung von Sicherheitsdokumenten sowie ein entsprechendes Sicherheitsdokument und eine Gruppe von individualisierten Sicherheitsdokumenten, wobei ein erstes Druckbild, das für eine Gruppe von Dokumenten identisch sein kann, mit einem zweiten Druckbild, das für Untergruppen dieser Gruppe oder für jedes Dokument dieser Gruppe verschieden sein kann, zumindest teilweise überdruckt wird.The invention relates to a method for individualizing security documents as well as to a corresponding security document and a group of individualized security documents, wherein a first print image, which may be identical for a group of documents, with a second print image, which for subgroups of this group or for any document thereof Group may be different, at least partially overprinted.

Aus der DE 29 33 436 C2 ist beispielsweise eine mehrschichtige Ausweiskarte bekannt, welche ein anwendungsneutrales, sicherheitstechnisch hochwertiges Druckbild, zum Beispiel ein im Stahltiefdruck erzeugtes Guillochenmuster auf einem Papiersubstrat enthält, auf das anwenderbezogene Daten, beispielsweise ein Lichtbild oder andere individualisierende Daten, mittels einem elektrophotographischen Verfahren unmittelbar aufkopiert werden, um diese Daten unlösbar und unverfälschbar mit dem Papiersubstrat zu verbinden. Dieses Substrat wird dann zur Bildung der Ausweiskarte mit durchsichtigen Deckfolien kaschiert. Das Verfahren kann aber auch im Zusammenhang mit anderen, sicherungsbedürftigen Dokumenten, Wertpapieren, Aktien etc. verwendet werden.From the DE 29 33 436 C2 For example, a multi-layered ID card is known, which contains an application-neutral, high-quality security printed image, for example a steel gravure printed guilloche pattern on a paper substrate to which user-related data, such as a photograph or other individualizing data, are directly copied by means of an electrophotographic process to this Data insoluble and unalterable to connect to the paper substrate. This substrate is then laminated with transparent cover sheets to form the badge. However, the procedure may also be used in connection with other documents, securities, shares, etc. that need to be backed up.

Die einzige Fälschungsmöglichkeit besteht in einer unberechtigten Personalisierung von mit dem anwendungsneutralen Druckbild bedruckten Original-Rohlingen, was jedoch durch eine entsprechend sichere Aufbewahrung dieser Rohlinge verhindert werden kann. Auch eine Totalfälschung der sicherheitstechnisch hochwertigen bedruckten Papierrohlinge ist nicht möglich. Das vorbeschriebene Verfahren ist daher immer dann sinnvoll, wenn einerseits die Fälschungssicherheit und Verfälschungssicherheit von Dokument und Daten sichergestellt werden müssen, wenn aber andererseits die Aufbringung der individuellen Daten mit relativ einfachen Mitteln erfolgen soll.The only forgery possibility is an unauthorized personalization of printed with the application-neutral printed image original blanks, but this can be prevented by a correspondingly safe storage of these blanks. Even a total falsification of security-quality high-quality printed paper blanks is not possible. The method described above is therefore always useful if, on the one hand, the security against forgery and tampering security of document and data must be secured, but on the other hand, the application of individual data should be done with relatively simple means.

Dasselbe Interesse an (Ver-)Fälschungssicherheit und einfacher Individualisierbarkeit besteht auch bei dem Aufbringen von individuellen Daten auf Passseiten und Etiketten zum Aufkleben auf Passseiten, so genannten Visa-Stickern, und des Weiteren im Zusammenhang mit Warenbegleitpapieren, Zollpapieren, Echtheitszertifikaten in Form von Aufklebern oder Anhängern oder Etiketten, Gutscheinen, Eintrittskarten, Schecks, Aktien und Urkunden.The same interest in (anti-counterfeiting) security and ease of customization is also the application of individual data on passport pages and labels for sticking to passport pages, so-called visa stickers, and in connection with accompanying documents, customs documents, certificates of authenticity in the form of stickers or Tags or labels, coupons, tickets, checks, shares and certificates.

Datenseiten von Pässen sowie Visa-Sticker sind häufig mit nicht variablen, im Stichtiefdruckverfahren erzeugten Aufdrucken versehen. Beispielsweise sind in der Kopfzeile dieser Dokumente Hoheitszeichen und Namen eines Landes angegeben, die aber nicht überdruckt werden, da sie ansonsten durch den Überdruck zumindest teilweise verdeckt werden könnten. Individuelle und/oder benutzerbezogene Daten werden daher an anderen Stellen beispielsweise mittels Laserdrucker, Typenrad oder Tintenstrahldrucker aufgedruckt.Data pages of passports and visa stickers are often provided with non-variable imprints produced by intaglio printing. For example, the headers and names of a country are indicated in the header of these documents, but they are not overprinted, since otherwise they could be at least partially obscured by the overprint. Individual and / or user-related data are therefore printed at other locations, for example by means of a laser printer, type wheel or inkjet printer.

Aufgabe der vorliegenden Erfindung ist es, ein einer Gruppe von Dokumenten gemeinsames, sicherheitstechnisch hochwertiges Druckbild mit einem einfach zu erzeugenden, individualisierenden Aufdruck in besonders geeigneter fälschungssicherer Weise zu kombinieren.It is an object of the present invention to combine a high-quality printed image, which is common to a group of documents, with an easily produced, individualizing imprint in a particularly suitable forgery-proof manner.

Diese Aufgabe wird durch ein Individualisierungsverfahren sowie durch ein entsprechendes Sicherheitsdokument mit den Merkmalen der unabhängigen Ansprüche gelöst. In davon abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung angegeben.This object is achieved by an individualization method and by a corresponding security document having the features of the independent claims. In dependent claims advantageous embodiments and developments of the invention are given.

Dementsprechend wird auf ein in herkömmlicher Weise im Stichtiefdruckverfahren erzeugtes Druckbild, das für eine Gruppe von Sicherheitsdokumenten identisch ist und beispielsweise ein Guillochenmuster sein kann, ein individualisierendes Druckbild mittels einer Drucktinte gedruckt, die zumindest im Moment des Druckvorgangs fließfähig ist. Das hat zur Folge, dass die Drucktinte von der Stichtiefdruckfarbe abperlt und sich an Stellen ablagert, wo sich keine Stichtiefdruckfarbe befindet. Das im Stichtiefdruckverfahren erzeugte Druckbild bleibt somit vollständig sichtbar und bildet feine Linien innerhalb des individualisierenden, mit Drucktinte erzeugten Druckbilds. Die feinen Linien beeinträchtigen den Informationsgehalt des individualisierenden Druckbilds nicht wesentlich und zwar selbst dann nicht, wenn es sich bei dem individualisierenden Druckbild um eine drucktechnische Wiedergabe eines photographischen Portraits, beispielsweise des Dokumenteninhabers - nachfolgend Lichtbild genannt - handelt. Das individualisierende Druckbild wird lediglich, unter der Lupe betrachtet, von den im Stichtiefdruck erzeugten Strukturen unterbrochen, wobei die Details insbesondere erst bei Betrachtung durch eine Lupe ersichtlich werden. Solche überlagerten Strukturen lassen sich so gut wie nicht verfälschen.Accordingly, in a conventionally intaglio printed image which is identical to a group of security documents and may be, for example, a guilloche pattern, an individualizing print image is printed by means of a printing ink which is flowable at least at the moment of the printing operation. As a result, the printing ink rolls off the intaglio ink and deposits in places where there is no intaglio ink. The printed image produced in the intaglio printing process thus remains completely visible and forms fine lines within the individualizing printed image produced with printing ink. The fine lines do not significantly affect the information content of the individualizing print image, even if the individualizing print image is a reproduction of a photographic portrait, for example of the document holder - referred to below as a photographic image. The individualizing print image is only interrupted, as viewed under the magnifying glass, by the structures produced in intaglio printing, with the details becoming apparent only when viewed through a magnifying glass. Such superimposed structures can hardly be falsified.

Als zur Erzeugung des individualisierenden Druckbildes besonders geeignetes Verfahren hat sich ein Tintenstrahldruckverfahren, auch Inkjet-Verfahren genannt, mit handelsüblichen Schwarz- oder Farbpatronen erwiesen. Dieses Verfahren ist preiswert und verwendet Drucktinte, die von den üblichen Stahltiefdruckfarben abgestoßen wird. Ein ebenfalls geeignetes Verfahren ist ein von der Firma Indigo B.V./Niederlande entwickeltes, digitales Druckverfahren (hier auch als Indigo-Druckverfahren bezeichnet). Bei diesem Verfahren werden in einer Flüssigkeit dispergierte elektrisch geladene Farbpartikel mittels elektrischer Felder auf ein Substrat aufgebracht. Das Indigo-Verfahren liefert eine ähnlich gute Druckqualität wie der Offsetdruck, lässt jedoch eine kontinuierliche Änderung der Druckmotive zu. Da die Druckmotive auch individuelle Daten wiedergebende Zeichen sein können, eignet sich dieses digitale Druckverfahren besonders für die Individualisierung von Dokumenten.As a particularly suitable method for generating the individualizing printed image, an inkjet printing process, also called inkjet process, has proven with commercially available black or color cartridges. This process is inexpensive and uses printing inks that are repelled by the usual steel gravure inks. Another suitable method is a digital printing process developed by Indigo BV / Netherlands (also referred to herein as an indigo printing process). In this method, electrically charged color particles dispersed in a liquid are applied to a substrate by means of electric fields. The Indigo process delivers print quality as good as offset printing however, a continuous change of print motifs too. Since the print motifs can also be individual data reproducing characters, this digital printing method is particularly suitable for the individualization of documents.

Grundsätzlich ist das erfindungsgemäße Verfahren aber auf alle Sicherheitsdokumente anwendbar, die ein anwendungsneutrales, aus zueinander kontrastierenden hellen und dunklen Bereichen bestehendes Druckbild besitzen (insbesondere also ein Stichtiefdruckbild), wobei entweder die hellen oder die dunklen Bereiche des Druckbildes auf die Druckfarbe eines darüber gedruckten, individualisierenden Druckbildes eine abstoßende Wirkung haben, so dass sich die Druckfarbe des individualisierenden Druckbilds im Wesentlichen nur in den entsprechend anderen Bereichen ablagert. Es ist offensichlich, dass bei der drucktechnischen Realisierung dieses erfindungsgemäßen Prinzips beispielsweise in kleinen Poren oder feinen Rillen des Farbauftrags des ersten Druckbildes geringfügige Reste der Druckfarbe des individualisierenden Aufdrucks verbleiben können, ohne jedoch den visuellen Gesamteindruck nennenswert zu beeinflussen.In principle, however, the method according to the invention can be applied to all security documents which have an application-neutral, consisting of contrasting light and dark areas existing print image (especially a gravure image), wherein either the light or the dark areas of the printed image on the ink of an above printed, individualizing Print image have a repulsive effect, so that the ink of the individualizing printed image essentially deposited only in the corresponding other areas. It is obvious that in the technical printing implementation of this inventive principle, for example, in small pores or fine grooves of the ink application of the first printed image slight residues of the ink of the individualizing imprint can remain, but without affecting the visual overall impression appreciable.

Vorzugsweise handelt es sich bei den Bereichen, in denen sich die Druckfarbe ablagert, um unbedruckte Substratbereiche, da unbedruckte Substratbereiche insbesondere im Falle eines papierenen Substrats, beispielsweise einem normalen Sicherheitspapier, zur Aufnahme von Druckfarbe besonders geeignet sind.The areas in which the printing ink is deposited are preferably unprinted substrate areas, since unprinted substrate areas, in particular in the case of a paper substrate, for example a normal security paper, are particularly suitable for receiving printing ink.

Es ist aber ebenso möglich, dass es sich bei dem Substrat um ein die Druckfarbe des individualisierenden Druckbildes abstoßendes Material handelt, beispielsweise Drucktinte auf einem Kunststoffsubstrat, dass dieselbe Druckfarbe aber auf den aus einem haftfähigen Material gedruckten Bereichen des anwendungsneutralen Druckbilds sehr wohl haftet. Dies führt bei einem mit dunkler Druckfarbe auf einem hellen Substrat gedruckten, anwendungsneutralen Druckbild dazu, dass das anwendungsneutrale Druckbild in seinem überdruckten Teil wie ein Negativ wirkt.However, it is also possible for the substrate to be a material which repels the printing ink of the individualizing printed image, for example printing ink on a plastic substrate, but the same printing ink is applied to the regions of the printed material application-neutral printed image very well liable. In an application-neutral print image printed on a light substrate with dark ink, this results in the application-neutral print image acting as a negative in its overprinted part.

Das individualisierende Druckbild kann eine oder mehrere individualisierende Informationen enthalten, wie zum Beispiel eine fortlaufende Nummer (Seriennummer), ein Lichtbild und/oder persönliche Daten des Dokumenteninhabers im Klartext und/ oder dieselben oder andere Daten in Form eines maschinenlesbaren Barcodes.The individualizing print image may include one or more individualizing information, such as a serial number (serial number), a photograph and / or personal data of the document holder in plain text and / or the same or other data in the form of a machine readable barcode.

Nachfolgend wird die Erfindung beispielhaft anhand der begleitenden Zeichnungen erläutert. Darin zeigen:

Fig.1a
ein erstes, für eine Gruppe von Sicherheitsdokumenten identisches, sicherungstechnisch hochwertiges Druckbild auf einem Substrat;
Fig. 1b
einen Ausschnitt des Substrats aus Fig. 1a im Querschnitt;
Fig. 2a
das Substrat aus Fig. 1a mit einem zweiten, individualisierenden Druckbild;
Fig. 2b
denselben Ausschnitt des Substrats wie in Fig. 1b mit dem zusätzlichen individualisierenden Aufdruck im Moment der Aufbringung des individualisierenden Druckbilds;
Fig. 3a
eine vergrößerte Darstellung der übereinander gedruckten ersten und zweiten Druckbilder und
Fig. 3b
denselben Ausschnitt wie Fig. 2b kurze Zeit nach dem Drucken des zweiten, individualisierenden Druckbilds.
The invention will now be described by way of example with reference to the accompanying drawings. Show:
1a
a first, high-security print image on a substrate identical to a group of security documents;
Fig. 1b
a section of the substrate Fig. 1a in cross-section;
Fig. 2a
the substrate off Fig. 1a with a second, individualizing print image;
Fig. 2b
the same section of the substrate as in Fig. 1b with the additional individualizing imprint at the moment of applying the individualizing print image;
Fig. 3a
an enlarged view of the superimposed printed first and second printed images and
Fig. 3b
same section as Fig. 2b short time after printing the second individualizing print image.

Fig. 1a zeigt in schematischer Weise ein Dokument, umfassend ein Substrat 3 mit einem ersten Aufdruck 1. Bei diesem Aufdruck 1 handelt es sich um ein sicherungstechnisch hochwertiges Druckbild, welches für eine große Anzahl von Sicherheitsdokumenten identisch ist, beispielsweise identisch für die Seiten eines Passdokuments einer bestimmten Nation oder beispielsweise für alle für eine bestimmte Nation verwendeten Visaaufkleber. Fig. 1a 1 schematically shows a document comprising a substrate 3 with a first print 1. This print 1 is a high-quality print image which is identical for a large number of security documents, for example identically for the pages of a passport document of a particular nation or, for example, all visa stickers used for a particular nation.

In dem Ausführungsbeispiel gemäß Fig. 1a handelt es sich dabei um ein im Stichtiefdruckverfahren, bei industriell angewendeten Verfahren typischerweise im Stahlstichverfahren erzeugtes einheitliches Grundmuster. Es kann sich aber genauso gut um ein informatives Druckbild handeln, wie beispielsweise das Portrait einer bekannten Persönlichkeit, wie es von Banknoten bekannt ist.In the embodiment according to Fig. 1a this is a uniform basic pattern produced in the intaglio printing process, in the case of industrially applied processes, typically in the steel-piercing process. But it can just as well be an informative printed image, such as the portrait of a known personality, as it is known from banknotes.

Das Stichtiefdruckverfahren wird für die Erzeugung hochwertiger Druckerzeugnisse zur Fälschungssicherung häufig eingesetzt, da die Druckplattenherstellung sehr aufwändig und teuer ist und mit diesem Verfahren ein sehr charakteristisches Druckbild mit taktilen Anteilen erzeugt werden kann, das mit Hilfe anderer Druckverfahren nicht zu imitieren ist. In der Druckplatte werden Vertiefungen als Gravurbereiche, typischerweise in Form von Linien eingraviert. Für den Druckvorgang werden die Gravurbereiche der Druckplatte mit Farbe gefüllt. Die überschüssige Farbe wird mit Hilfe eines Wischzylinders oder eines Rakels von der Druckplatte entfernt, so dass nur die Gravurlinien mit Farbe gefüllt bleiben. Durch diesen Wischvorgang werden also alle Farbbestandteile auf der Druckplattenoberfläche entfernt. Mittels eines Gegendruckzylinders mit elastischer Oberfläche wird dann das zu bedruckende Substrat, im Regelfall Papier, mit hohem Druck auf die Druckplatte gepresst. Das Dokument wird hierbei in die mit pastöser Farbe gefüllten Gravurbereiche der Druckplatte eingedrückt und kommt so mit der Druckfarbe in Berührung. Beim Ablösen des Datenträgers zieht dieser die Druckfarbe aus den Vertiefungen der Gravurlinien heraus. Das so erzielte Druckbild weist Druckbereiche auf, die je nach Tiefe der Gravur in der Farbschichtdicke variieren. Verwendet man im Stichtiefdruck lasierende Druckfarben, so erhält man beim Bedrucken eines hellen, insbesondere eines weißen Datenträgers mit geringen Farbschichtdicken eine helle Farbtönung, beim Bedrucken mit dicken Farbschichtdicken kräftigere, dunklere Farbtöne. Im Vergleich zu anderen gängigen Druckverfahren können mit dem Stichtiefdruckverfahren Druckbilder mit verhältnismäßig großen und unterschiedlichen Farbschichtdicken erzeugt werden. Dies bietet aus sicherheitstechnischer Sicht den Vorteil, dass die damit erzeugten Druckbilder bei Verwendung entsprechend tiefer Gravuren manuell fühlbar sind. Durch Verwendung besonders feiner Gravuren sind auch extrem feine, ausgesprochen scharfe Drucklinien realisierbar.The intaglio printing process is often used for the production of high-quality printed products for counterfeiting, since the printing plate production is very complex and expensive and can be produced with this method a very characteristic print image with tactile shares that can not be imitated by other printing processes. In the printing plate depressions are engraved as engraving areas, typically in the form of lines. For the printing process, the engraving areas of the printing plate are filled with paint. The excess paint is removed from the printing plate with the help of a wiper cylinder or a squeegee so that only the engraving lines remain filled with ink. By this wiping so all color components are removed on the printing plate surface. By means of a counter-pressure cylinder with elastic surface is then to printing substrate, usually paper, pressed with high pressure on the printing plate. The document is in this case pressed into the filled with pasty color engraving areas of the printing plate and comes so in contact with the ink. When removing the disk, this pulls the ink out of the recesses of the engraving lines. The printed image thus obtained has printing areas that vary depending on the depth of the engraving in the ink layer thickness. If lithographic printing inks are used in intaglio printing, a light color tone is obtained when printing a light-colored, in particular a white, medium-density medium, and stronger, darker shades when printing with thick layer thicknesses. Compared to other common printing processes, the gravure printing process can produce print images with relatively large and different ink layer thicknesses. From a safety point of view, this offers the advantage that the printed images thus generated can be felt manually when using correspondingly deep engravings. By using particularly fine engravings, extremely fine, extremely sharp printing lines can be realized.

In Fig.1b ist ein Ausschnitt des Dokuments aus Fig.1a im Querschnitt gezeigt. Bei dem Substrat handelt es sich um ein typisches Sicherheitspapier, gegebenenfalls auch mit Wasserzeichen. Man erkennt, dass sich das Druckbild 1 aus unbedruckten Bereichen 1a und mit Stichtiefdruckfarbe bedruckten Bereichen 1b zusammensetzt. Damit das Druckbild 1 seine optische Wirkung entfalten kann, kontrastiert die Farbe der bedruckten Bereiche 1b zur Farbe der unbedruckten Bereiche 1a, die bei einem nicht eingefärbten Substrat 3 typischerweise weiß ist. In Fig.1b ist auch die typische fühlbare Struktur eines im Stichtiefdruckverfahren bedruckten Papiersubstrats zu erkennen, auf welchem einseitig die aus den Gravurbereichen herausgezogene Druckfarbe steht. Durch das Eindrücken des Substrats mittels des elastischen Andruckzylinders in die Gravurbereiche der Druckplatte sind die bedruckten Bereiche 1b auf der entsprechend gegenüberliegenden Substratseite ein wenig eingedrückt.In 1b shows is a section of the document 1a shown in cross section. The substrate is a typical security paper, possibly also with watermarks. It can be seen that the printed image 1 is composed of unprinted areas 1a and areas 1b printed with intaglio printing ink. In order for the printed image 1 to develop its optical effect, the color of the printed areas 1 b contrasts with the color of the unprinted areas 1 a, which is typically white in the case of a non-colored substrate 3. In 1b shows is also the typical tactile structure of a printed by intaglio printing paper substrate to recognize on which one side of the withdrawn from the engraving areas ink is. By impressing the substrate by means of the elastic Pressure cylinder in the engraving areas of the printing plate, the printed areas 1b on the corresponding opposite side of the substrate a little pressed.

Das in Bezug auf die Fig. 1a, 1b beschriebene Sicherheitsdokument mit für eine Gruppe von Dokumenten identischem ersten Druckbild 1 wird anschließend individualisiert, indem ein zweites Druckbild im Tintenstrahldruckverfahren über das erste Druckbild gedruckt wird, wie in Fig. 2a in Aufsicht und in Fig. 2b im Querschnitt dargestellt ist. Der individualisierende Aufdruck lautet im Ausführungsbeispiel "INKJET". Er kann mit schwarzer oder farbiger Drucktinte gedruckt sein. Anstelle des Aufdrucks "INKJET" könnte es sich bei dem individualisierenden Aufdruck 2 beispielsweise auch um personenbezogene individuelle Daten oder ein mehrfarbiges oder schwarzweißes Lichtbild handeln.That in terms of Fig. 1a, 1b described security document with identical for a group of documents first print image 1 is then individualized by a second print image is printed in the inkjet printing process on the first print image, as in Fig. 2a in supervision and in Fig. 2b is shown in cross section. The individualizing imprint is "INKJET" in the exemplary embodiment. It can be printed with black or colored printing ink. Instead of the imprint "INKJET", the individualizing imprint 2 could, for example, also be personal personal data or a multicolored or black-and-white photograph.

Fig. 2b zeigt den Schichtaufbau des Dokuments aus Fig. 2a im Moment des Bedruckens des Substrats 3 mit dem individualisierenden Druckbild 2. Die ersten und zweiten Bereiche 1a, 1b des ersten Druckbilds 1 werden zunächst unter Verwendung eines Tintenstrahldruckes Canon BJC7100 mit einer handelsüblichen schwarzen Drucktintenpatrone vollständig überdruckt. Aufgrund der abstoßenden Wirkung der Stichtiefdruckfarbe auf die Drucktinte des individualisierenden Druckbilds 2 fließt die Drucktinte seitlich von der Stichtiefdruckfarbe ab und lagert sich in den unbedruckten Zwischenräumen 1a ab. Dieser Vorgang ist in Fig. 2b mit Doppelpfeilen angedeutet. Es ergibt sich dann eine Materialverteilung wie in Fig. 3b dargestellt, wonach die Drucktinte des individualisierenden Druckbilds 2 lediglich die Bereiche 1a des Substrats 3 einfärbt, die beim Drucken des ersten Druckbilds 1 im Stichtiefdruckverfahren unbedruckt geblieben waren. Fig. 2b shows the layer structure of the document Fig. 2a the first and second areas 1a, 1b of the first print image 1 are first completely overprinted using a Canon BJC7100 ink jet printer with a commercial black ink cartridge. Due to the repulsive effect of the intaglio printing ink on the printing ink of the individualizing printed image 2, the printing ink flows laterally from the intaglio printing ink and deposits in the unprinted interspaces 1a. This process is in Fig. 2b indicated by double arrows. It then results in a material distribution as in Fig. 3b shown, after which the printing ink of the individualizing print image 2 only the areas 1a of the substrate 3 colors, which had remained unprinted in printing the first printed image 1 in the intaglio printing.

Fig. 3a zeigt in Vergrößerung diesen Effekt anhand des Buchstaben "K" des individualisierenden Druckbilds 2 in Aufsicht. Das im Stichtiefdruckverfahren aufgebrachte Druckbild 1 bildet hier ein regelmäßiges Hintergrundmuster beispielsweise in roter Farbe auf einem weißen Untergrund. Im Bereich des Buchstaben "K" des individualisierenden Druckbilds 2 sind die unbedruckten Zwischenbereiche des Hintergrundmusters 1 mit schwarzer Drucktinte ausgefüllt und die demgegenüber hellere rote Farbe des Hintergrundmusters bleibt in dem individualisierenden Druckbild visuell und ohne Hilfsmittel erkennbar. Eine solche Kombination von zwei überlagerten Druckbildern, von denen eines auch taktil fühlbar ist, gewährleistet einen hohen Fälschungsschutz, da sie mit einfachen konventionellen Drucktechniken oder Farbkopierern nicht reproduzierbar ist. Sie ist ohne aufwändige Hilfsmittel auch von Nichtfachleuten überprüfbar und unbefugte nachträgliche Veränderungen und Manipulationen an dem individuellen Druckbild 2, beispielsweise durch Radieren oder Abdecken, werden durch die dabei fast zwangsläufig auftretende Veränderung des Druckbilds 1 leicht erkennbar. Fig. 3a shows in magnification this effect on the basis of the letter "K" of the individualizing print image 2 in supervision. The printed image 1 applied in the intaglio printing process here forms a regular background pattern, for example in red on a white background. In the area of the letter "K" of the individualizing print image 2, the unprinted intermediate areas of the background pattern 1 are filled with black printing ink and the contrasting lighter red color of the background pattern remains visible in the individualizing print image visually and without any aids. Such a combination of two superimposed print images, one of which is tactile, ensures high protection against counterfeiting, since it is not reproducible with simple conventional printing techniques or color copiers. It can also be checked by non-specialists without complex aids and unauthorized subsequent changes and manipulations on the individual print image 2, for example by etching or covering, are easily recognizable by the almost inevitable change in the printed image 1.

Claims (26)

  1. A method for individualizing security documents comprising the steps of:
    - providing a document having a first, high security quality printed image (1) comprising mutually contrasting light and dark areas (1a, 1b), and
    - printing at least part of the first printed image (1) with a second printed image (2),
    characterized in that the material selected for printing the second printed image (2) is a material that is repelled either by the dark areas (1b) or by the light areas (1a) of the first printed image (1) and is deposited in the accordingly other areas (1a or 1b) so that it remains only in said other areas.
  2. The method according to claim 1, wherein the light areas (1a) of the first printed image (1) are unprinted areas of the document.
  3. The method according to either of claims 1 to 2, wherein the first printed image (1) is printed on a security paper.
  4. The method according to any of claims 1 to 3, wherein the second printed image (2) is produced by the ink jet printing method.
  5. The method according to any of claims 1 to 3, wherein the second printed image (2) is produced by the Indigo printing process.
  6. The method according to any of claims 1 to 5, wherein the second printed image (2) comprises a photograph of a person.
  7. The method according to any of claims 1 to 6, wherein the second printed image (2) comprises personal data in plaintext.
  8. The method according to any of claims 1 to 7, wherein the second printed image (2) comprises data in the form of a bar code.
  9. The method according to any of claims 1 to 8, wherein the documents are passports.
  10. The method according to any of claims 1 to 8, wherein the documents are visa stickers.
  11. The method according to any of claims 1 to 8, wherein the documents are documents selected from the following group: documents accompanying goods, customs documents, authenticity certificates as stickers or tags or labels, vouchers, admission tickets, checks, shares, deeds.
  12. The method according to any of claims 1 to 11, wherein the first printed image (1) is identical for a group of documents and the second printed image (2) is different for subgroups of the group of documents.
  13. The method according to any of claims 1 to 11, wherein the first printed image (1) is identical for a group of documents and the second printed image (2) is different for each document of the group of documents.
  14. A security document comprising a first, high security quality printed image (1) comprising mutually contrasting light and dark areas (1a, 1b), and a second printed image (2) printed at least over part of the first printed image (1), characterized in that the material forming the second printed image (2) is present only either in the light areas (1a) or in the dark areas (1b) of the first printed image (1).
  15. The security document according to claim 14, wherein the light areas (1a) of the first printed image (1) are areas where no ink material used for producing the first printed image (1) is present.
  16. The security document according to either of claims 14 to 15, wherein the first printed image (1) is printed on security paper.
  17. The security document according to any of claims 14 to 16, wherein the second printed image (2) is an ink jet print.
  18. The security document according to any of claims 14 to 16, wherein the second printed image (2) is an Indigo print.
  19. The security document according to any of claims 14 to 18, wherein the second printed image (2) comprises a photograph of a person.
  20. The security document according to any of claims 14 to 19, wherein the second printed image (2) comprises individual or personal data in plaintext.
  21. The security document according to any of claims 14 to 20, wherein the second printed image (2) comprises data in the form of a bar code.
  22. The security document according to any of claims 14 to 21, wherein the document is a passport.
  23. The security document according to any of claims 14 to 21, wherein the document is a visa sticker.
  24. The security document according to any of claims 14 to 21, wherein the document is a document selected from the following group: document accompanying goods, customs document, authenticity certificate as a sticker or tag or label, voucher, admission ticket, check, share, deed.
  25. A group of security documents according to any of claims 14 to 24, wherein the first printed image (1) is identical for a group of documents and the second printed image (2) is different for subgroups of the group of documents.
  26. A group of security documents according to any of claims 14 to 24, wherein the first printed image (1) is identical for a group of documents and the second printed image (2) is different for each document of the group of documents.
EP02779379A 2001-09-24 2002-09-19 Method for individualising security documents and corresponding security document Expired - Lifetime EP1432592B1 (en)

Applications Claiming Priority (3)

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DE10146912 2001-09-24
DE10146912A DE10146912A1 (en) 2001-09-24 2001-09-24 Procedure for individualizing security documents and corresponding security document
PCT/EP2002/010537 WO2003029019A1 (en) 2001-09-24 2002-09-19 Method for individualising security documents and corresponding security document

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US8418615B2 (en) 2013-04-16
HK1070030A1 (en) 2005-06-10
ATE388025T1 (en) 2008-03-15
PL203203B1 (en) 2009-09-30
CN100408348C (en) 2008-08-06
DE50211850D1 (en) 2008-04-17
CA2461277A1 (en) 2003-04-10
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WO2003029019A1 (en) 2003-04-10
PL367452A1 (en) 2005-02-21

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