DE3440653A1 - Method for making visible attempts to tamper with embossed plastic cards - Google Patents

Method for making visible attempts to tamper with embossed plastic cards

Info

Publication number
DE3440653A1
DE3440653A1 DE19843440653 DE3440653A DE3440653A1 DE 3440653 A1 DE3440653 A1 DE 3440653A1 DE 19843440653 DE19843440653 DE 19843440653 DE 3440653 A DE3440653 A DE 3440653A DE 3440653 A1 DE3440653 A1 DE 3440653A1
Authority
DE
Germany
Prior art keywords
visible
attempts
visualization
temperature
exposure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19843440653
Other languages
German (de)
Inventor
Günter H. Dr.-Ing. 8035 Gauting Marx
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.)
Marx guenter H dr-Ing
Original Assignee
Marx guenter H dr-Ing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marx guenter H dr-Ing filed Critical Marx guenter H dr-Ing
Priority to DE19843440653 priority Critical patent/DE3440653A1/en
Publication of DE3440653A1 publication Critical patent/DE3440653A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/415—Marking using chemicals
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • B42D2033/20—
    • B42D2033/32—

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Credit Cards Or The Like (AREA)

Abstract

A method for making visible attempts to tamper with embossed plastic cards consists in applying materials in a visible position near the surface of the card which are permanently modified when a temperature limit of 50 DEG celsius, for example, is exceeded in such a way that this modification is very clearly visible and can also be detected by touch if necessary.

Description

Verfahren zur Sichtbarmachung von Fälschungsversuchen an geprägten PlastikkartenProcess for the visualization of attempts at forgery on embossed plastic cards

Die Erfindung betrifft ein Verfahren zum Sichtbarmachen von Fälschungsversuchen an kalt-geprägten Karten, die ganz oder teilweise aus thermoplastischen Kunststoffen bestehen.The invention relates to a method for making forgery attempts on cold-embossed cards visible, the whole or partly consist of thermoplastics.

Eines der modernen Zahlungsmittel sind sogenannte Kreditkarten. Das sind Karten mit Anteilen aus thermoplastischen Kunststoffen, aus denen sich mit Prägemaschinen Buchstaben und Zahlen so herausprägen lassen, daß mit den dann hervortretenden Zeichen in geeigneten Abdruckgeräten stempelähnlich gedruckt werden kann.One of the modern means of payment are so-called credit cards. These are cards with parts made of thermoplastic Plastics from which letters and numbers can be embossed with embossing machines in such a way that the then protruding Characters can be stamp-like printed in suitable printing devices.

Der Prägevorgang wirkt am Kunststoffteil wie ein Tiefziehvorgang mit Innenstempel und gegen eine äußere Form. Er läßt sich als Kaltumformung beschreiben.The embossing process acts like a deep-drawing process on the plastic part with inner stamp and against an outer shape. It can be described as cold forming.

Fälscher sind auf die Idee gekommen, die kalte Umformung des Kunststoffs bei erhöhter Temperatur im thermoplastischen Bereich rückgängig zu machen.Counterfeiters came up with the idea of cold forming the plastic at elevated temperatures in the thermoplastic area to undo.

Anschließend werden solchen 'ungeprägten' Karten gefälschte Buchstaben und Zahlen so neu eingerägt, daß die Karte vom Lieferanten einer Ware oder einer Dienstleistung als gültiges Zahlungsmittel anerkannt wird.Subsequently, such 'unembossed' cards are counterfeited Letters and numbers re-enacted in such a way that the card from the supplier of a product or service is considered valid Means of payment is recognized.

Für Kreditkarten-Unternehmen und Lieferanten der Leistung wird die Fälschung erst zu spät sichtbar. Der Benutzer der gefälschten Kreditkarte ist dann längst an anderer Stelle und hat möglicherweise die Prägung erneut geändert.For credit card companies and service providers, the counterfeit is only visible too late. The user of the The counterfeit credit card has long been elsewhere and may have changed its embossing again.

Der Erfindung liegt die Aufgabe zugrunde, ein einfaches und kostengünstiges Verfahren zu schaffen, das den Prägevorgang nicht-reversibel werden läßt.The invention is based on the object of creating a simple and inexpensive method that does the embossing process can be irreversible.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, daß im sichtbaren Bereich nahe der Oberfläche der Karte eine deutlich sichtbare Veränderung dann eintritt, wenn eine für den erfindungsgemäß einzubringenden Werkstoff eine bestimmt Temperatur überschritten wird.According to the invention the object is achieved in that in visible area near the surface of the card, a clearly visible change occurs when one for the material to be introduced according to the invention has a certain temperature is exceeded.

Geeignete Werkstoffe können einerseits solche Thermofarben sein, deren Farbumschlag sich bei späterer Abkühlung nicht zurück bildet. Dabei wird als 'Thermofarbe' eine solche handelsübliche chemische Substanz verstanden, die bei Erreichen einer bestimmten Temperatur ihre Farbe wechselt.On the one hand, suitable materials can be such thermal inks whose color does not change when it cools down later. A commercially available one is called 'thermal paint' Understood chemical substance that changes its color when a certain temperature is reached.

34408533440853

Geeignete Werkstoffe können aber auch alle temperaturempfindlichen Materialien sein, die unter optischer Veränderung zerstört werden. Dazu zählen bestimmte Zuckerarten, die bei Temperaturen von beispielsweise 50 Grad Celsius zu karamelisieren beginnen und dabei vom farblosen in einen gelblich bis braunen Farbzustand übergehen. Es zählen dazu Kunststoffe, die sich ab etwa 50 Grad Celsius unter Blasenbildung zu zersetzen beginnen, ohne daß sich die Farbe des Werkstoffes schon wirklich verändert. Es reicht für die sichtbare Veränderung, daß ein zunächst durchsichtiger Werkstoff durch Blasenbildung und veränderte Reflexion des Lichtes an den Blasenoberflächen eine scheinbare Farbe, z.B. weiß, annimmt.Suitable materials can, however, also be any temperature-sensitive Be materials that are destroyed under optical change. These include certain types of sugar that start to caramelize at temperatures of 50 degrees Celsius, for example, and from colorless to one yellowish to brown in color. This includes plastics that form blisters from around 50 degrees Celsius begin to decompose without actually changing the color of the material. It's enough for that visible change that an initially transparent material due to the formation of bubbles and changed reflection of the Light on the bubble surfaces takes on an apparent color, e.g. white.

Die sichtbare Veränderung soll also in einem Temperatur-Bereich eintreten, der oberhalb der normalen Gebrauchstemperatur und unterhalb der Temperatur für eine thermoplastische Rückformung der geprägten Zeichen liegt. Temperaturen ab etwa 50 Grad Celsius liegen oberhalb der normalen Gebrauchstemperatur. The visible change should therefore occur in a temperature range that is above the normal use temperature and below the temperature for thermoplastic recovery of the embossed characters. Temperatures around 50 degrees Celsius is above normal usage temperature.

Neben der optischen Veränderung dürfen weitere Veränderungen eintreten. Z.B. darf die Blasenbildung die Oberfläche auch so weit beschädigen, daß dies tastbar wird.In addition to the visual change, other changes may occur. E.g. the surface may also be blistering damage so much that it becomes palpable.

Die temperaturbedingte dauerhafte Veränderung des Aussehens kann ganzflächig eintreten, es ist aber auch denkbar, die temperaturempfindlichen Substanzen so in Formen aufzubringen, daß später, nach Überschreiten 4er Grenztemperatur, Schriftzüge wie z.B. UNGÜLTIG sichtbar werden.The temperature-induced permanent change in the appearance can occur over the entire area, but it is also conceivable to apply the temperature-sensitive substances so in forms that later, he, lettering become visible after exceeding 4 limit temperature such as INVALID.

Es versteht sich, daß geprägte Plastikkarten nicht nur als modernes Zahlungsmittel, sondern auch als personenbezogenes Identifikationssystem (Werksausweise, Personalausweise) in Planung und in Umlauf sind. Auch dort gilt es, Fälschungen zu erschweren.It goes without saying that embossed plastic cards are not only used as a modern means of payment, but also as personal Identification system (company ID cards, ID cards) in Planning and in circulation. There, too, it is important to make counterfeiting more difficult.

Claims (6)

34405533440553 Dr. Ing. Günter H. MarxDr. Ing.Günter H. Marx D-8035 Gauting, Günther-Caracciola-Str. 10D-8035 Gauting, Günther-Caracciola-Str. 10 Verfahren zur Sichtbarmachung von Fälschungsversuchen an geprägten PlastikkartenProcess for the visualization of attempts at forgery on embossed plastic cards AnsprücheExpectations Verfahren zum Sichtbarmachen solcher Fälschungsversuche an geprägten Karten, die ein Entprägen bei höherer Temperatur beinhalten, dadurch gekennzeichnet, daß eine oberflächig sichtbare Schicht durch solche höhere Temperaturen in ihrem Aussehen deutlich verändert wird.Process for making such attempts at forgery on embossed cards visible, which would result in debossing at higher Temperature include, characterized in that a superficially visible layer through such higher Temperatures is significantly changed in their appearance. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Sichtbarmachung nach Einwirkung erhöhter Temperatur nicht-reversible Thermofarben verwendet werden.2. The method according to claim 1, characterized in that non-reversible thermal inks can be used to make them visible after exposure to elevated temperatures. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Sichtbarmachung nach Einwirkung erhöhter Temperatur temperaturempfindliche organische oder anorganische chemische Verbindungen gewählt werden, deren Besonderheit darin liegt, das sie nach Einwirkung . erhöhter Temperatur ihr Aussehen dauerhaft verändern.3. The method according to claim 1, characterized in that for visualization after exposure to elevated temperature temperature-sensitive organic or inorganic chemical compounds are selected, their peculiarity lies in the fact that they act upon them. change their appearance permanently at higher temperatures. 4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß die dauerhafte Veränderung auf oxidativen Abbau der organischen Verbindung zurück zu führen ist.4. The method according to claim 3, characterized in that the permanent change to the oxidative degradation organic compound is to be traced back. 5. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zur Sichtbarmachung nach Einwirkung erhöhter Temperatur solche chemischen Verbindungen eingesetzt werden, die unter Bildung von Blasen dauerhaft verändert werden.5. The method according to claim 1, characterized in that for visualization after exposure to elevated temperature chemical compounds are used which are permanently changed with the formation of bubbles. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß die Bildung der Blasen nicht nur optisch, sondern auch tastend wahrgenommen werden kann.6. The method according to claim 5, characterized in that the formation of the bubbles is not only optically, but also can be perceived by touch. — 2 —- 2 -
DE19843440653 1984-11-07 1984-11-07 Method for making visible attempts to tamper with embossed plastic cards Withdrawn DE3440653A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843440653 DE3440653A1 (en) 1984-11-07 1984-11-07 Method for making visible attempts to tamper with embossed plastic cards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843440653 DE3440653A1 (en) 1984-11-07 1984-11-07 Method for making visible attempts to tamper with embossed plastic cards

Publications (1)

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DE3440653A1 true DE3440653A1 (en) 1985-03-28

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DE19843440653 Withdrawn DE3440653A1 (en) 1984-11-07 1984-11-07 Method for making visible attempts to tamper with embossed plastic cards

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DE (1) DE3440653A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271673A1 (en) * 1986-11-13 1988-06-22 LGZ LANDIS & GYR ZUG AG Multi-layer document
US5215809A (en) * 1990-09-19 1993-06-01 Toppan Printing Co., Ltd. Signature panel and process for producing the same
US5433807A (en) * 1987-12-04 1995-07-18 Gao Gesellschaft Fur Automation Und Organisation M.B.H. Method of producing a document with an unforgeable surface relief
WO1998016395A1 (en) * 1996-10-16 1998-04-23 E.C.S. European Contract Services S.R.L. Antitampering process and device for credit instruments or variable data
DE19932240A1 (en) * 1999-07-10 2001-01-18 Bundesdruckerei Gmbh Optically variable, concealable/revealable security element for valuable and security documents variable transparency has covering layer over information elements on document

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0271673A1 (en) * 1986-11-13 1988-06-22 LGZ LANDIS & GYR ZUG AG Multi-layer document
US5433807A (en) * 1987-12-04 1995-07-18 Gao Gesellschaft Fur Automation Und Organisation M.B.H. Method of producing a document with an unforgeable surface relief
US5215809A (en) * 1990-09-19 1993-06-01 Toppan Printing Co., Ltd. Signature panel and process for producing the same
WO1998016395A1 (en) * 1996-10-16 1998-04-23 E.C.S. European Contract Services S.R.L. Antitampering process and device for credit instruments or variable data
DE19932240A1 (en) * 1999-07-10 2001-01-18 Bundesdruckerei Gmbh Optically variable, concealable/revealable security element for valuable and security documents variable transparency has covering layer over information elements on document
DE19932240B4 (en) * 1999-07-10 2005-09-01 Bundesdruckerei Gmbh Optically variable displayable / concealable security elements for value and security documents

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