EP0412905B1 - Sicherheitspapier - Google Patents

Sicherheitspapier Download PDF

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Publication number
EP0412905B1
EP0412905B1 EP90402264A EP90402264A EP0412905B1 EP 0412905 B1 EP0412905 B1 EP 0412905B1 EP 90402264 A EP90402264 A EP 90402264A EP 90402264 A EP90402264 A EP 90402264A EP 0412905 B1 EP0412905 B1 EP 0412905B1
Authority
EP
European Patent Office
Prior art keywords
fact
medium according
constituted
sensitive
resistant
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.)
Expired - Lifetime
Application number
EP90402264A
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English (en)
French (fr)
Other versions
EP0412905A1 (de
EP0412905B2 (de
Inventor
Michel Camus
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.)
ArjoWiggins SAS
Original Assignee
ArjoWiggins SAS
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.)
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Publication date
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Application filed by ArjoWiggins SAS filed Critical ArjoWiggins SAS
Publication of EP0412905A1 publication Critical patent/EP0412905A1/de
Publication of EP0412905B1 publication Critical patent/EP0412905B1/de
Application granted granted Critical
Publication of EP0412905B2 publication Critical patent/EP0412905B2/de
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements

Definitions

  • the invention relates to security paper, in particular banknote paper.
  • Papers are already known which include strips or threads consisting of a transparent film provided with a continuous metallic layer, for example aluminum deposited under vacuum on polyester. Such threads, when introduced into paper which is then printed, are barely seen by the public in reflected light and become much more apparent in transmitted light.
  • the purpose of these wires is to prevent a counterfeiter, from a common paper, from imitating an authentic document, by printing on this paper a dark line on the surface. In this case of counterfeiting, there is no difference between the visibility of the line in reflection and in transparency.
  • EP-A-279 880 describes a transparent wire comprising metallic micro-prints obtained for example by demetallizing areas not protected by varnish. The prints are hardly visible by reflection and more visible by transparency using a magnifying device.
  • the invention aims to provide a support comprising a security element betraying falsification.
  • Document US-A-4 037 007 describes a security paper comprising boards comprising a substance capable of taking part in a coloring reaction, and when the document is checked with one or more reagents, the substance changes color .
  • This substance only reacts with a colorformer of the kind used in carbonless papers. It is an authentication process and not a process for betraying falsification.
  • Document GB-A-1 095 286 describes a micro-printed security thread. Certain micro-prints can be sensitive to chemical reagents, this sensitivity making it possible to make the prints appear reversibly in a given color. This brings an additional authentication feature to the security thread, but there are no means of highlighting falsification.
  • the wire can be a complex made of aluminum foil between two plastic sheets. This thread is clearly visible in the paper.
  • Another object of the invention is therefore to provide a support comprising a security element which also retains certain detectable security indices after an attempt to whiten the surface of the support.
  • the invention therefore relates to a printable security support comprising security elements betraying falsification. These security elements are such that they include at least hidden means for recognizing falsification.
  • the security element consists of an element at least partially coated with a layer sensitive to falsifying agents and provided at least partially with an agent resistant to falsifying agents, said resistant agent possibly forming a design, a model.
  • the layer sensitive to falsifying agents is a layer sensitive to agents chosen from the group of strong bases or solvents. polar.
  • the sensitive layer is, for example, a metal layer sensitive to alkalis such as aluminum.
  • the resistant agent is, for example, a colorless or colored impression. This impression can be obtained from an ink which may contain a pigment chosen from the group of mineral, organic and metallic pigments. This impression can also be obtained by chemical deposition of a metal which is inert towards the forging agents.
  • the flexible element is made of a synthetic material, for example polyester.
  • the security element consists of a polyester strip comprising on one side a metallic coating provided with prints resistant to falsifying agents.
  • the security element may consist of a polyester strip having on one side a metallic coating and on the other side of impressions resistant to falsifying agents.
  • the security element may consist of a polyester strip having on one side an imprint not sensitive to polar solvents and on the opposite face or the same face an imprint sensitive to polar solvents.
  • the support is for example a sheet of paper obtained by the wet method and made up of cellulosic fibers, possibly synthetic fibers, binders, fillers. It can be made of a sheet of synthetic material, possibly coated with a layer to improve printing.
  • the security support 1 is planar and printable. It comprises a security element 2 which is arranged at least partially between the upper and lower faces of the support 1.
  • FIG 1 there is shown a security element 2 which is completely disposed inside the support 1.
  • this security element 2 is visible to the naked eye in transparency, that is to say in transmitted light. On the other hand, in reflected light, it is much less visible.
  • this security element 2 seems identical to a security element of the prior art, namely a polyester thread covered with a continuous metallic layer.
  • this security element 2 includes hidden means of recognition 3 for falsification, these means being reactive to falsification agents.
  • the support 1 having on the surface impressions 3 which indicate for example the value 4 of the cut.
  • the security element 2 is an element, for example a wire or a fiber, or a confetti, or a board coated with a layer sensitive to falsification agents and provided with at least partially of a protective agent for the sensitive layer, this agent being resistant to falsifying agents.
  • a person skilled in the art is capable, by knowing the falsifying agents, of choosing a layer sensitive to these agents and a protective agent resistant to the same agents.
  • the falsifying agents are bases
  • the person skilled in the art may choose to coat the element (wire, fiber, confetti) with a metal dissolving at the bases and to provide the element with a partial layer or total of a base resistant varnish.
  • An exemplary embodiment is to coat a polyester thread 5 (FIG. 1) with a layer 6 of aluminum and to print using a colorless varnish 7 above the aluminum layer, this varnish being resistant to bases, a dark wire 8 is obtained such as in FIG. 4A.
  • a dark wire 8 is obtained such as in FIG. 4A.
  • the paper is then printed on the surface to form, for example, a banknote.
  • the counterfeiter uses a basic solution, possibly with detergent solutions, the aluminum layer will be dissolved and as the varnish is resistant to bases, an impression 9 will appear, which will be visible in transparency, while the paper will become without impression in area.
  • the wire will therefore not be visible to the counterfeiter ( Figure 3), in reflection.
  • the counterfeiter will clearly see an impression (as shown in FIG. 4B). For example, if printing in varnish forms the word "false", the counterfeiter will be dissuaded from reprinting
  • Another embodiment is to coat a polyester sheet totally of aluminum, on one side, and totally of varnish on another side, this varnish being resistant to bases and being colored.
  • This sheet is cut into confetti or boards which are introduced into a paper, which is then printed on the surface.
  • these boards appear greyish, and if an infringer tries to whiten the paper to remove the surface impression, the aluminum will be dissolved, while the colored varnish will remain. The boards will therefore appear colored, after an attempt at falsification.
  • the varnish can comprise, according to another example, fluorescent dyes, resistant to bases.
  • fluorescent dyes resistant to bases.
  • the security elements according to the invention are distinguished from the elements of the prior art. Indeed, the latter never use the layer layer sensitive to falsifying agents / agent resistant to falsifying agents.
  • Application EP-A-319 157 describes a wire which can include metallic inks in the form of printing or a wire which has been demetallized for example by means of a laser beam. This wire, once introduced into the paper, if it is subjected to a base, loses its metallic impression, but in no case does it appear after falsification a means of recognizing the falsification, this means being invisible before falsification.
  • Another embodiment of the invention is the deposition of aluminum on one side of the polyester 11 (FIG. 5) and the chemical deposition (to form a pattern) of a metal resistant to the bases, for example nickel.
  • a metal resistant to the bases for example nickel.
  • the security element can be introduced into a support which can be paper containing more or less synthetic or mineral fibers or else the support can be a sheet of printable synthetic material, such as the POLYART® sold by the applicant.
  • the printed characters are dried at 130 ° C. These characters are transparent. A uniform safety wire of uniform color is thus obtained. This wire is introduced into the paper by known techniques.
  • a security thread is produced as in Example 2 but using an ink made up of a mixture of two inks: a white ink and a black ink. These inks have the distinction of resisting chemical attack well. Any other mineral pigment can be added to these inks to give them a special shade. The color of the ink is a function of the tint of the characters which one desires so that they become not discernible on the security thread after introduction into the paper. The attempted falsification, as in the previous examples, will reveal the printed text as in example 2.
  • a safety thread according to the invention is obtained as follows: on one side of a 23 micron polyester support, printing by chemical deposition of nickel is carried out by the methods known from the prior art (Bayprint method from the company Bayer for example) . On the other side, an aluminum layer is deposited (aluminization under vacuum). This thread introduced into the paper seems quite common and does not reveal any clues. This thread reacts, as in the previous examples, to attempts at falsification.

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)

Claims (14)

1. Bedruckbares Sicherheits-Trägermaterial, das mindestens ein Sicherheitselement aufweist, das mindestens teilweise zwischen den Oberflächen des Trägermaterials angeordnet ist, dadurch gekennzeichnet, daß das Sicherheitselement besteht aus einem Element, das mindestens teilweise von einer Schicht bedeckt ist, die gegenüber Fälschungsmitteln empfindlich und mindestens teilweise mit versteckten Einrichtungen zur Erkennung der Fälschung ausgestattet ist, die bestehen aus einem gegenüber Fälschungsmitteln beständigen Agens, das gegebenenfalls eine Zeichnung oder ein Modell bildet.
2. Trägermaterial nach Anspruch 1, dadurch gekennzeichnet, daß es sich bei der gegenüber Fälschungsmitteln empfindlichen Schicht um eine Schicht handelt, die empfindlich ist gegenüber Fälschungsmitteln, die ausgewählt werden aus der Gruppe der starken Basen und der polaren Lösungsmittel.
3. Trägermaterial nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß es sich bei der empfindlichen Schicht um eine gegenüber Basen empfindliche Metallschicht handelt.
4. Trägermaterial nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß es sich bei dem beständigen Agens um einen farblosen, Farb-oder fluoreszierenden Aufdruck handelt.
5. Trägermaterial nach Anspruch 4, dadurch gekennzeichnet, daß die Druckfarbe ein Pigment enthält, das ausgewählt wird aus der Gruppe der mineralischen, organischen und Metallpigmente.
6. Trägermaterial nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Elementflexibel ist und aus einem synthetischen Material besteht.
7. Trägermaterial nach Anspruch 6, dadurch gekennzeichnet, daß das Element flexibel ist und aus Polyester besteht.
8. Trägermaterial nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Sicherheitselement besteht aus einem Polyesterstreifen (- band), der auf einer Oberfläche einen gegenüber Basen empfindlichen Metallüberzug aufweist, der mit gegenüber Fälschungsmitteln beständigen Aufdrucken versehen ist.
9. Trägermaterial nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Sicherheitselement besteht aus einem Polyesterstreifen (- band), der auf einer Oberfläche einen gegenüber Basen empfindlichen Metallüberzug und auf der anderen Oberfläche gegenüber den Fälschungsmitteln beständige Aufdrucke aufweist.
10. Trägermaterial nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß das Sicherheitselement besteht aus einem Polyesterstreifen (- band), der auf einer Oberfläche einen gegenüber polaren Lösungsmitteln unempfindlichen Aufdruck und auf der gegenüberliegenden Oberfläche oder der gleichen Oberfläche einen gegenüber polaren Lösungsmitteln empfindlichen Aufdruck aufweist.
11. Trägermaterial nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß es besteht aus einer Polyesterfolie, die auf nassem Wege erhalten wurde und besteht aus Cellulosefasern, gegebenenfalls synthetischen Fasern, Bindemitteln und Füllstoffen (Beschwerungsmitteln).
12. Trägermaterial nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß es besteht aus einer Kunstharzfolie, die gegebenenfalls von einer Schicht zur Verbesserung des Aufdrucks überzogen ist.
13. Verfahren zur Herstellung eines Trägermaterials nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß man
- eine flexible Folie mit einer gegenüber Basen empfindlichen Metallschicht bedeckt,
- eine der Oberflächen derflexiblen Folie mit einer gegenüber Fälschungsmitteln beständigen Druckfarbe bedruckt, wobei der Aufdruck in bezug auf die Metallschicht unsichtbar ist,
- die so überzogene und bedruckte flexible Folie zerschneidet zur Herstellung von Fasern, Endlosfäden oder Streifen (Brettchen), und
- die so erhaltenen Fasern, Fäden oder Streibfen (Brettchen) mindestens teilweise in das Innere eines bedruckbaren Trägermaterials einführt.
14. Verfahren zur Herstellung eines Trägermaterials nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß man
- eine flexible Folie mit einer gegenüber Basen empfindlichen Metallschicht bedeckt,
- eine der Oberflächen der flexiblen Folie durch chemische Ablagerung von Nickel bedruckt, wobei der Aufdruck in bezug auf die Metallschicht unsichtbar ist,
- die so überzogene und bedruckte flexible Folie zerschneidet zur Herstellung von Fasern, Endlosfäden oder Streifen (Brettchen), und
- die so erhaltenen Fasern, Fäden oder Streifen (Brettchen) mindestens teilweise in das Innere eines bedruckbaren Trägermaterials einführt.
EP90402264A 1989-08-11 1990-08-08 Sicherheitspapier Expired - Lifetime EP0412905B2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8910826 1989-08-11
FR8910826 1989-08-11

Publications (3)

Publication Number Publication Date
EP0412905A1 EP0412905A1 (de) 1991-02-13
EP0412905B1 true EP0412905B1 (de) 1994-01-12
EP0412905B2 EP0412905B2 (de) 2000-01-05

Family

ID=9384666

Family Applications (1)

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EP90402264A Expired - Lifetime EP0412905B2 (de) 1989-08-11 1990-08-08 Sicherheitspapier

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EP (1) EP0412905B2 (de)
DE (1) DE69005943T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2627822A2 (de) * 2010-10-13 2013-08-21 D.W. Spinks (Embossing) Limited Planchette für ein wertpapier

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802724A (en) * 1972-09-11 1974-04-09 Burroughs Corp Protection system for computerized negotiable document printouts
GB1525383A (en) * 1974-08-02 1978-09-20 Portals Ltd Paper for printed sheets
US4652015A (en) * 1985-12-05 1987-03-24 Crane Company Security paper for currency and banknotes
IN173621B (de) * 1987-12-04 1994-06-18 Portals Ltd

Also Published As

Publication number Publication date
DE69005943T2 (de) 1994-08-04
DE69005943T3 (de) 2000-08-03
EP0412905A1 (de) 1991-02-13
DE69005943D1 (de) 1994-02-24
EP0412905B2 (de) 2000-01-05

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