EP1034536B1 - Sicherheitsinformationsträger - Google Patents

Sicherheitsinformationsträger Download PDF

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Publication number
EP1034536B1
EP1034536B1 EP98955704A EP98955704A EP1034536B1 EP 1034536 B1 EP1034536 B1 EP 1034536B1 EP 98955704 A EP98955704 A EP 98955704A EP 98955704 A EP98955704 A EP 98955704A EP 1034536 B1 EP1034536 B1 EP 1034536B1
Authority
EP
European Patent Office
Prior art keywords
substrate
medium according
coating
magnetic particles
data medium
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
EP98955704A
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English (en)
French (fr)
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EP1034536A1 (de
Inventor
Sandrine Rancien
Thierry Dumery
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ArjoWiggins Security SAS
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ArjoWiggins SAS
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Publication date
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Publication of EP1034536A1 publication Critical patent/EP1034536A1/de
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Publication of EP1034536B1 publication Critical patent/EP1034536B1/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
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation
    • 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
    • G07D7/004—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 digital security elements, e.g. information coded on a magnetic thread or strip
    • 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
    • G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07F—COIN-FREED OR LIKE APPARATUS
    • G07F7/00—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus
    • G07F7/08—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means
    • G07F7/086—Mechanisms actuated by objects other than coins to free or to actuate vending, hiring, coin or paper currency dispensing or refunding apparatus by coded identity card or credit card or other personal identification means by passive credit-cards adapted therefor, e.g. constructive particularities to avoid counterfeiting, e.g. by inclusion of a physical or chemical security-layer
    • 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
    • D21H19/00—Coated paper; Coating material
    • D21H19/02—Metal coatings
    • 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

Definitions

  • the present invention relates to a security information medium for recording and storage of static and dynamic information relating to the traceability of a product.
  • This support is plastic and includes magnetic particles, it is in particular in the form of a label or plastic packaging sheet.
  • the present invention also relates to a method of manufacturing said support and a method of reading recorded information and stored.
  • the information is recorded magnetically using inductive heads but their reading is done by reading machines equipped with magneto-resistive sensors as it will be explained below.
  • Another example is linked to acts of counterfeiting carried out for the imitation of major brands or drugs or products with serious safety consequences people or property.
  • Another example is related to the diversion acts putting the products authentic in distribution circuits parallel to selective distribution networks or. exclusive. Similarly, when products are found to be defective in use, it is imperative to be able to find them to withdraw, exchange or revise them.
  • Traceability is a legal obligation in the case of certain products as for automobiles and their spare parts, for products subject to approval; medication subject to marketing authorization or certain food products. More generally, according to the European directive of June 29, 1992 relating to product safety, all companies must be able to provide proof of product conformity to the general regulations.
  • traceability is defined as "the ability to find the history, use or location of an entity by means of identifications saved ”.
  • ISO 9000-2 of July 1994 relating to the application of standards for quality management and quality assurance which takes up the content of ISO 9000-2: 1993 where details are given on page 10, point 4.8 of the recommendations on the identification and traceability of a product.
  • Traceability applies to the monitoring of a group of same articles, bearing the same number lot as a reference, called statistical identification, or to individually identified objects, called registration, or a sequential identification of operations or operators identified.
  • linear bar codes (1D) in particular the so-called logistics bar code which symbolizes the translation of the EAN 128 standardized coding system, the most dense in information currently used for logistical monitoring of a product. It symbolizes at the times the information concerning the compulsory main identifier (date of manufacture and / or number batch) and additional information relating to the logistics unit (information concerning the manufacturing. transport and customer), to ensure product traceability from its manufacture to its point of sale.
  • a disadvantage of this type of barcode is that it requires tolerances for direct printing difficult to obtain with any medium. For example, if the media printing is porous, it will absorb too much printing ink and will not allow small, well-defined printouts, otherwise the code will be difficult to read.
  • Another downside is that the amount of information it can contain is limited.
  • the codes appeared two-dimensional bars (2D), which are formed by a stack of several linear bar codes appearing in the form of a checkerboard and, more recently, matrix codes have appeared which do not are no longer in the form of bars, but of light and dark dots or squares. They require specific decoding software which does not allow very fast data processing.
  • microchip Another way to record the traceability of a developing product is the microchip.
  • This chip is incorporated into a label or directly into the product. Although it has the possibility of storing static and dynamic information at the same time, it has the disadvantage of being too large (around 2 mm 2 ) to be discreetly incorporated into a label or packaging or the product itself; it is all the thicker when it is activated, that is to say when it is implemented with an induction winding which supplies it with the operating energy and taken up in resin. Its lack of flexibility limits its incorporation into rigid supports. Furthermore, its cost price is high.
  • the chip can be located easily, by visual identification or by touch. It is not truly inviolable, it can be removed and replaced by another.
  • patent US5520954 a method of preparing a dispersion has been described. magnetic comprising gelatin and to be applied in a layer on a film photographic to allow data recording, the layer obtained not having to interfere with the photographic properties of the film.
  • This patent does not concern the field of the invention which is that of security supports.
  • the problem is therefore to provide an information medium allowing the traceability of a product and / or process, which is invisible and difficult to spot without knowing in advance its location, and which presents an important and evolving memory, that is to say which allows to record and store a large amount of information and some being static and others dynamic.
  • this support must be compatible at least with one of the anti-theft systems known as electromagnetic devices (magnetic tab or fine alloy), circuits electronic devices remotely detectable by radio frequency or magnetoacoustic devices (vibrate and emit a frequency of 58kHz), that is to say that it must not disturb the detection, activation and deactivation of these various devices.
  • electromagnetic devices electromagnetic tab or fine alloy
  • circuits electronic devices remotely detectable by radio frequency or magnetoacoustic devices vibrate and emit a frequency of 58kHz
  • Another property sought in addition to traceability is to be able to evidence of an attempt to tamper with a product; for example, when replacing a product given by another in a bottle, bottle or box.
  • Another secondary property sought in addition to traceability is compatibility with known means of authentication (so-called security elements) in the field of security documents, such as optically variable devices (holograms, iridescence, diffraction gratings, moiré, thermochromic effect ).
  • An object of the present invention is therefore to provide an information medium allowing the traceability of a product which solves the problems of the means of the prior art and can present in addition to the desired secondary properties set out above.
  • Another object of the present invention is to be able to encode information in quantity increased compared to bar codes.
  • coating on the surface of the substrate is meant that it is a coating which is not not necessarily, at least in part, covered by a masking layer, said coating possibly be present on the external surface of the substrate or be under or between other layers which do not not mask at least in part.
  • magnetic particles do not affect the appearance characteristics of the said area 'means that it is not necessary to hide said area to make it invisible and more particularly means that when they are included in the mass of the substrate, or even when included in a surface coating the surface of the substrate, the particles as such are not distinguished and the appearance, in particular the brightness (L *) and / or colorimetric coordinates (L *, a *, b *) in the CIELAB system, and / or the transparency or the opacity of the substrate is not or very little modified.
  • the brightness L * is greater than 70 and preferably 80.
  • Known fillers providing whiteness such as for example titanium dioxide or calcium carbonate can be added to improve whiteness, in particular at rates between 2 and 10%, in the case of white substrates.
  • said support has a thickness of between 1 and 2000 ⁇ m, preferably between 1 and 800 ⁇ m and more preferably between 10 and 600 ⁇ m.
  • the present invention is particularly advantageous when said support is a label or a packaging sheet or film.
  • the invention makes it possible to associate in the same zone properties magnetic and an authentication element like those known in the field of security documents, in particular for visual effect, such as certain security threads, devices with variable optical effect such as diffraction gratings, holograms, moiré patterns, iridescent effect prints or bands, prints based on thermochromic inks or other.
  • visual effect such as certain security threads
  • devices with variable optical effect such as diffraction gratings, holograms, moiré patterns, iridescent effect prints or bands, prints based on thermochromic inks or other.
  • the visual effect or readability is not obscured by the presence of particles magnetic.
  • the magnetic particles can therefore be associated with authentication elements (also called security elements).
  • anti-theft devices can coexist with the presence of particles magnetic.
  • Said support with said particles can also make it possible to record and store information, in much larger quantities than previously, especially under form magnetic codes, and render the area where the magnetic information was recorded and stored invisible to the naked eye and invisible with a magnifying glass. It also allows you to record and read additional information to the initial information to follow the traceability of a product. Indeed with magneto-resistive sensors having a much higher sensitivity to heads inductive previously used, we can read encoded magnetic information or simply characterize the saturation or remanent magnetization of the pigments, this at concentrations of very weak magnetic particles, in particular, lower than the concentrations allowing a detection by inductive sensors, but making the presence of said particles invisible Such support is therefore inviolable because the areas containing the information cannot be located easily.
  • the magnetic particles do not form agglomerates or aggregates inhomogeneous. It is therefore necessary that magnetic particles are well individualized and uniformly dispersed and distributed in their substrate.
  • uniform distribution magnetic particles as the particle density in the area, and therefore the magnetic saturation or remanent magnetization in said zone are substantially constant so that there is little or no background noise. This feature is necessary to allow to read reliably a coded message, recorded in said zone.
  • a secondary aim of the present invention is therefore to confer on a support, the ability to be magnetized, recorded, detected and read by machine thanks to its magnetic properties, without it it is necessary to mask the magnetic zones to make them invisible and in particular to ability to introduce magnetic particles homogeneously and without aggregates on the surface or in the mass of a substrate over a wide area.
  • the magnetic particles can therefore be advantageously incorporated into the mass. of the substrate by mixing a dispersion of said particles with the base mixture to make the substrate or the coating of said information medium. This gives good individualization of the particles, which prevents re-agglomeration of said particles when incorporated into the manufacturing medium of said substrate or said coating.
  • the particles magnetic then come in the form of pigments which can be coated with a layer, even discrete (ie not continuous) coming from the dispersion medium.
  • Said area comprising said particles may cover the entire substrate or a part only.
  • magnetic particles in the mass of the substrate or in a coating on the surface of the substrate in an area covering the entire substrate, allows to considerably expand the possibilities of using the present invention. However they may only be in a localized area, in particular in the form of a strip, in particular of width from 1 to 5 cm by methods known to a person skilled in the art, said zone not covering necessarily the entire substrate.
  • the present invention is particularly advantageous when the substrate comprising said magnetic particles is a transparent to translucent plastic substrate and / or has a light color, especially white, cream or pale yellow.
  • the brightness L * of the CIELAB system is greater than 70 and preferably more than 80.
  • the ISO whiteness according to ISO 2471 is preferably greater than or equal to 60% and the whiteness CIE according to the CIELAB formula is preferably greater than or equal to 20%.
  • this coating can consist of an ink or a varnish or a composition coating or adhesive, which can be applied respectively by a technique printing or coating.
  • the coating composition may especially include, in addition to said magnetic particles, a binder chosen from polyvinyl alcohol (PVA) type binders, or other water-soluble binders or polymers in aqueous dispersion (latex), fillers coating, water and additives.
  • the varnish may especially include, in addition to said particles magnetic, polymeric binder, solvent and additives.
  • the coating composition can be applied by means known to those skilled in the art with coating facilities, such as metal blade coater, air knife coater, CHAMPION type rotary bar coater, pre-dosed film transfer coater.
  • inks or varnishes particular mention is made of printing inks or varnishes which can be applied by gravure printing, intaglio printing, offset printing or screen printing over a thickness of 1 to 5 ⁇ m.
  • printing varnishes mention may be made of soluble varnishes in aqueous medium or in organic solvent which are dried by evaporation, and the varnishes fixed by UV or electronic radiation ("electron beam").
  • said coating can advantageously be transparent or translucent.
  • the holograms or holographic security strips consist of multilayer complexes [(1) for holograms: adhesive layer, embossing lacquer, aluminum and protective varnish; (2) for holographic bands: the same layers as for holograms but applied to the at least one layer of polyester, said strip being coated on its external faces with varnish heat sealing]. Then to have magnetic properties, you had to apply a layer magnetic in these complexes by an additional operation, the layer being moreover dark and thick.
  • holograms are sometimes transparent holograms, say non-metallic or partially demetallized holograms.
  • the presence of a layer dark magnetic is on the one hand incompatible with the transparency properties of the hologram and on the other hand, resists the partial demetallization treatment of the hologram, making it impossible to carry out an inscription with recesses of the so-called “Cleartext” type.
  • the present invention makes it possible to associate magnetic particles with holograms of advantageously. To do this, simply mix the magnetic particles with the layers component of the hologram, such as the adhesive layer, the embossing lacquer, the protection or in the hologram adhesion primer.
  • the layers component of the hologram such as the adhesive layer, the embossing lacquer, the protection or in the hologram adhesion primer.
  • the hologram constitutes a holographic strip
  • magnetic particles in the mass of said strip (such as a polyester substrate) or in a heat-sealing adhesive or varnish allowing the adhesion of said strip to the support.
  • An additional advantage of holographic tapes is to obtain a hologram at magnetic property without affecting traditional manufacturing processes and without increasing its excessively thick.
  • the invention also provides a medium for recording information static and dynamic which can be a holagram.
  • a medium for recording information static and dynamic which can be a holagram.
  • the mixing of magnetic particles in the mass of the substrate or a transparent to translucent coating allows them to be distributed uniformly over the entire surface of the support and superimpose them on inscriptions or patterns, negative or positive, without alter their visibility and appearance.
  • the support allowing the recording of information static and dynamic is an integral part of the object relating to said information
  • the medium can be the object itself.
  • This variant can be applied to plastic security documents and in particular to plastic banknotes whose traceability is to be followed or to an official document such as a passport cover, an identity card or a driving license or to a substrate intended for the manufacture of such an official document, in which said magnetic particles are applied in the mass of said substrate or in a coating on the surface of the substrate.
  • information in particular digitized information, corresponding to an identity photograph and / or variable information can be magnetically recorded and stored without this information being visible or disturbing a standardized layout of said documents.
  • the magnetic particles are included in security inks.
  • the present invention also makes it possible to produce a support consisting of a sheet packaging or a plastic sheet for the manufacture of a packaging sheet, said magnetic particles being incorporated in the mass of the substrate constituting said sheet or in a coating applied to the surface of said substrate.
  • the present invention also makes it possible to produce plastic security labels. particularly advantageous.
  • Magnetic particles can be incorporated into the mass of the substrate or in a coating applied to the surface of the substrate on the front of the label, in particular in a coating of the transparent varnish type, or on the back, in particular in a adhesive applied to the surface of said substrate on its back.
  • the magnetic information recorded is never visible even on the back through the label holder as a bottle, in particular, when it is a label of a wine bottle or a bottle of perfume
  • the magnetic information can be presented according to various embodiments.
  • the support includes magnetic particles in at least one continuous area and recording bits logic is done by magnetization with fields whose direction of magnetization is reversed in localized regions. More specifically, certain regions of the support are brought to saturation in one direction or another, said regions then corresponding to bits "0" or respectively "1" of the coded information.
  • the support comprises magnetic particles in at least one continuous zone and the recording is done according to an F / 2F type encoding as described in ISO standards 7811-3 and 7811-6. Clock and bit tracks are merged. If the bit is a "1" there is a flow transition that takes place between two pulses clock, if the bit is a "0", there are no flow transitions between two pulses clock.
  • coercivity particles of 15.5 ⁇ 10 3 to 800 ⁇ 10 3 A / m (approximately 200 to 10,000 Oe) are used in particular.
  • the so-called low coercivity materials have a coercivity between 15.5 x 10 3 and 32 x 10 3 A / m (about 200 to 400 Oe) and are generally iron oxides.
  • the so-called medium coercivity materials have a coercivity between 32.10 3 and 135.10 3 A / m (approximately 400 to 1700 Oe) and are generally iron oxides doped with cobalt or chromium dioxides.
  • the so-called high coercivity materials have a coercivity between 135.10 3 and 800.10 3 A / m (around 1700 to 10 000 Oe), such as barium or strontium ferrites, in particular BaFe 12 O 19 or SrFe 12 O 19 respectively. commonly used.
  • the present invention also relates to a method of manufacturing a support according to the invention, characterized in that said magnetic particles are incorporated into the mass of the substrate or in a coating on the surface of the substrate in said zone, said particles having a size and a concentration such that they do not affect the characteristics appearance of said area
  • a dispersion of magnetic particles is mixed with the material of the substrate or a coating applied to the surface of the substrate.
  • Different types of coatings that can be applied to the substrate surface have been described above.
  • a dispersion of magnetic particles is mixed in the medium organic with the base mixture for use in the manufacture of said substrate consisting of plastic sheet.
  • the plastic sheets can in particular be based on a polyolefin such than polyethylene or polypropylene or their copolymers, and contain pigment fillers, anti-static agents. They can be obtained by extrusion or by injection. Leaves can be stretched.
  • said particles dispersed in organic or aqueous medium in a coating applied to at least one of the faces of the substrate.
  • coating Different types of coating that can be applied to the surface of said substrate have been described above.
  • a dispersion of magnetic particles is carried out as follows. Magnetic particles are dispersed with stirring using a dispersing agent, such as a polyacrylate, and optionally a grinding resin, having good compatibility with the medium in which it will be incorporated later. The paste obtained is then treated in a ball mill to destroy the agglomerates and individualize the particles. The dispersion obtained comprises 10% of magnetic particles by dry weight.
  • a dispersing agent such as a polyacrylate, and optionally a grinding resin, having good compatibility with the medium in which it will be incorporated later.
  • the paste obtained is then treated in a ball mill to destroy the agglomerates and individualize the particles.
  • the dispersion obtained comprises 10% of magnetic particles by dry weight.
  • Magnetic particles are barium ferrites which have a coercivity of 218.84 x 10 3 A / m (2750 Oe). The largest particle size is less than about 1 ⁇ m.
  • the dispersion of magnetic particles is mixed and granules of a random copolymer of ethylene and propylene to form a mixture master.
  • This mixture is brought to 210 ° C.
  • the mixture master obtained is cooled and dried. Passing through a granulator makes it possible to obtain rods (granules) of constant size.
  • this masterbatch is introduced with another masterbatch comprising an ethylene-propylene copolymer and an antistatic agent and this mixture is brought to 210 ° C.
  • a sheet of format 70 X 100 cm is obtained.
  • the sheets obtained are translucent and have a thickness of 300 ⁇ m.
  • For 100 parts by weight of the copolymer there is 0.15 part of antistatic agent and 0.05 part of magnetic particles by dry weight.
  • Packaging by cutting and creasing, the sheets obtained are transformed into a packaging box for a perfume bottle.
  • a pencil-type recording system with an inductive head, by an F / 2F type encoding, permanent identification data corresponding to the product to be packaged are recorded in zone 1 according to a fictitious track located for example in top of the package. It is then possible to record new information during the circulation of the product in another zone 2 located at another place of the packaging and so on depending on the life of the product.
  • the magnetic data is read on a pencil-type reader equipped with a magnetoresistive head. We can thus easily record the information allowing the traceability of the product. Reading the information correctly confirms the homogeneous distribution of the magnetic particles and without re-agglomeration in the substrate.
  • An acrylic adhesive in a solvent medium (mixture of ethyl acetate and heptane) which contains the magnetic particles is applied to a transparent poly (ethylene terephatalate) film, by raking coating. 0.19 parts of the magnetic particles were introduced in the form of the magnetic dispersion of Example 1 per 100 parts of the adhesive by dry weight. The amount of magnetic adhesive deposited is 23 g / m 2 dry. The support film has a thickness of 23 ⁇ m before depositing the adhesive. A transparent adhesive and magnetic label is obtained. This label is applied to a transparent plastic bottle. The aesthetic appearance of the bottle is not altered.
  • Identification information (static) and dynamic information relating to the traceability of the product are recorded for example by carrying out an encoding such that each series of information is separated by a long series of “0” bits.
  • the bottle thus labeled can be packaged in the packaging of Example 1, and thus record the same information both in the packaging and in the label. There is therefore a link between the product and its packaging. .
  • An aqueous dispersion of magnetic particles is produced as follows: The barium ferrite powder is added with stirring to an aqueous solution of a surfactant, both wetting and dispersing, such as an ammonium salt of poly (acrylic acid) and optionally a grinding resin having good compatibility with the environment in which it will be incorporated later.
  • a surfactant such as an ammonium salt of poly (acrylic acid) and optionally a grinding resin having good compatibility with the environment in which it will be incorporated later.
  • the paste obtained is then treated in a ball mill to destroy the agglomerates and individualize the particles.
  • the concentrate of individualized magnetic particles is then rediluted and stabilized against the sedimentation of the particles by adding a rheology-modifying agent, such as for example an aqueous gel of bentonites or of pyrogenic silicas.
  • the dispersion contains, by dry weight, 10 percent of magnetic particles.
  • the magnetic tests were carried out as follows on the samples: Recording of magnetic data: for each sample, we first carry out an encoding of a 2F type signal (series of "1") and we measure the average amplitude of the signal. We then proceed to an encoding with a low density F / 2F signal (10 bits per inch, or approximately 10 bits for 2.54 cm) of the “1-1-0-1-0” type.
  • This recording is done using a conventional double-head inductive recording device (one for materials with low coercivity and the other for materials with high coercivity) having a writing air gap of 100 ⁇ m. .
  • the writing width is 6.5mm and the recording speed is 200mm / s.
  • the write current was selected at 250 mA in order to obtain an optimum signal.
  • the pressure forces exerted between the recording head and the samples and the head-sample distance were selected so as to have the best possible recording and a maximum amplitude of the signal during playback.
  • Reading magnetic data the magnetic recording of the samples is read with a magnetoresistive read head.
  • This magnetoresistive read head has a sensitivity of around 10 mV per Gauss and the resolution of the sensor is 27 ⁇ G.
  • the width of the magnetoresistive head is 3 mm.
  • the head-sample distance is less than 200 ⁇ m.
  • the intensity of the current in the magnetoresistor is set to 10 mA. Thanks to an operating unit, an output signal is read in millivolts (voltage difference resulting from the variation of the resistivity of the head during the passage of the sample) which translates, in absolute value, the magnetic flux transitions recorded.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Credit Cards Or The Like (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
  • Paper (AREA)

Claims (31)

  1. Sicherheitsdatenträger zur Aufzeichnung und Speicherung von statischen und dynamischen Daten, dadurch gekennzeichnet, daß er ein Substrat aus einer Kunststoffolie und mindestens einer magnetische Teilchen, die die Aufzeichnung und Speicherung von bei Verwendung einer Magnetlupe unsichtbaren Daten ermöglichen, enthaltenden Zone enthält und derart beschaffen ist, daß:
    die magnetischen Teilchen in der Substratmasse oder einem Überzug auf der Substratoberfläche enthalten sind,
    die magnetischen Teilchen das Erscheinungsbild der Zone ohne jegliche unsichtbarmachende Abdeckung der Teilchen nicht beeinflussen und
    die magnetischen Teilchen in der Zone einheitlich verteilt sind und den folgenden Konzentrationseigenschaften einzeln oder kombiniert entsprechen:
    a) die magnetischen Teilchen sind in der Substratmasse oder dem auf die Substratoberfläche aufgebrachten Überzug in einer Konzentration kleiner gleich 1 Trockengewichtsprozent, bezogen auf das Substrat in der Zone, enthalten,
    b) die Teilchen sind in einem auf die Substratoberfläche aufgebrachten Überzug enthalten und liegen in dem Überzug (in der Zone) in einer Menge kleiner gleich 250 mg/m2 vor.
  2. Datenträger nach Anspruch 1, dadurch gekennzeichnet, daß es sich um eine Kunststoffolie mit einer Dicke zwischen 1 und 2000 µm handelt.
  3. Datenträger nach Anspruch 2, dadurch gekennzeichnet, daß es sich um eine Kunststoffolie mit einer Dicke zwischen 1 und 800 µm, vorzugsweise zwischen 10 und 600 µm, handelt.
  4. Datenträger nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die magnetischen Teilchen in dem Überzug auf der Substratoberfläche enthalten sind, wobei der Überzug aus einem Klebstoff besteht.
  5. Datenträger nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Teilchen in dem Überzug auf der Substratoberfläche enthalten sind, wobei der Überzug aus einer Beschichtungszusammensetzung besteht.
  6. Träger nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Teilchen in dem Überzug auf der Substratoberfläche enthalten sind, wobei der Überzug aus einem Lack oder einer Tinte oder Druckfarbe, der bzw. die mittels Drucktechniken, wie Tiefdruck, Offsetdruck oder Siebdruck, aufgebracht werden kann, besteht.
  7. Datenträger nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die magnetischen Teilchen in einem auf die Substratoberfläche aufgebrachten Heißsiegellack enthalten sind.
  8. Datenträger nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß es sich dabei um eine Kunststoffolie für die Herstellung eines Etiketts handelt und die magnetischen Teilchen in der Substratmasse oder einem auf die Substratoberfläche aufgebrachten Überzug und/oder einem auf die Substratoberfläche aufgebrachten Klebstoff enthalten sind.
  9. Datenträger nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß es sich dabei um eine Verpackungsfolie oder eine Kunststoffolie zur Herstellung einer Verpackungsfolie handelt und die magnetischen Teilchen in der Substratmasse oder einem auf die Substratoberfläche aufgebrachten Überzug enthalten sind.
  10. Datenträger nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß es sich dabei um einen integralen Bestandteil des die statischen und dynamischen Daten betreffenden Gegenstands handelt.
  11. Datenträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die magnetischen Teilchen in einem auf ein Hologramm aufgebrachten Überzug oder einer Aufbauschicht eines Hologramms enthalten sind.
  12. Träger nach Anspruch 11, dadurch gekennzeichnet, daß es sich bei dem Hologramm um ein transparentes oder teilweise entmetallisiertes Hologramm handelt.
  13. Datenträger nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die magnetischen Teilchen in einer Beschriftungen oder Motive im Positiv oder Negativ enthaltenden Zone enthalten sind.
  14. Datenträger nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Zone das gesamte Substrat bedeckt.
  15. Datenträger nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß er eine Aufeinanderfolge der in einem Überzug auf der Substratoberfläche enthaltene magnetische Teilchen enthaltenden Zonen enthält, wobei die Zonen durch Bereiche ohne magnetische Teilchen getrennt sind und die Aufeinanderfolge der Zonen eine magnetische Codierung bildet.
  16. Datenträger nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Zone Teilchen mit einer Koerzivität von mehr als 32 x 103 A/m, vorzugsweise 135 x 103 A/m, enthält und groß genug ist, um als Träger zur magnetischen Registrierung eines Codes zu dienen.
  17. Datenträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die magnetischen Teilchen in der Substratmasse oder einem auf die Substratoberfläche aufgebrachten Überzug in einer Konzentration kleiner gleich 0,1 Trockengewichtsprozent, bezogen auf das Substrat in der Zone, enthalten sind.
  18. Datenträger nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Konzentration an magnetischen Teilchen 0,001 bis 0,1%, vorzugsweise 0,02 bis 0,07%, beträgt.
  19. Datenträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Teilchen in einem auf die Substratoberfläche aufgebrachten Überzug enthalten sind und die Menge an magnetischen Teilchen in dem Überzug (in der Zone) 1 bis 100 mg/m2 beträgt.
  20. Datenträger nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Menge an magnetischen Teilchen in dem Überzug 5 bis 50 mg/m2 beträgt.
  21. Datenträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Größe der magnetischen Teilchen unter 2 µm, vorzugsweise unter 1 µm, liegt.
  22. Datenträger nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, daß die Größe der magnetischen Teilchen 0,1 bis 1 µm, vorzugsweise 0,1 bis 0,5 µm, beträgt.
  23. Datenträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Substrat bzw. der Überzug auf der Substratoberfläche transparent oder durchscheinend ist.
  24. Datenträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Substrat eine helle Farbe, insbesondere weiß, cremefarben oder hellgelb, aufweist.
  25. Datenträger nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Zone des Substrats oder des Überzugs mit den Teilchen eine Helligkeit L* gemäß CIELAB-System von mehr als 70 und vorzugsweise mehr als 80 aufweist.
  26. Datenträger nach Anspruch 24 oder 25, dadurch gekennzeichnet, daß die Zone des Substrats oder des Überzugs mit den Teilchen einen ISO-Weißgrad gemäß ISO-Norm 2471 größer gleich 60% unter Lichtart D65 ohne UV unter einem Beobachtungswinkel von 10° aufweist.
  27. Datenträger nach einem der Ansprüche 24 bis 26, dadurch gekennzeichnet, daß die Zone des Substrats mit den Teilchen einen CIE-Weißgrad des Substrats gemäß CIELAB-Formel größer gleich 20% unter Lichtart D65 ohne UV unter einem Beobachtungswinkel von 10° aufweist.
  28. Verfahren zum Lesen von in einem Dokument nach einem der Ansprüche 1 bis 27 registrierten und gespeicherten Daten, dadurch gekennzeichnet, daß man sich zum Lesen eines mit magnetoresistiven Sensoren versehenen Lesegeräts bedient.
  29. Verfahren zur Herstellung eines Sicherheitsdatenträgers nach einem der Ansprüche 1 bis 28, dadurch gekennzeichnet, daß man die magnetischen Teilchen in die Substratmasse oder einen auf die Substratoberfläche aufgebrachten Überzug in der Zone einarbeitet.
  30. Verfahren zur Herstellung eines Sicherheitsdatenträgers nach einem der Ansprüche 1 bis 29, dadurch gekennzeichnet, daß man eine Dispersion der magnetischen Teilchen mit dem Medium zur Herstellung des Substrats oder des Überzugs auf der Substratoberfläche vermischt.
  31. Verfahren zur Herstellung eines Sicherheitsdatenträgers nach Anspruch 30, dadurch gekennzeichnet, daß die Dispersion von magnetischen Teilchen 1 bis 40 Trockengewichtsprozent, vorzugsweise 5 bis 15 Trockengewichtsprozent, Teilchen enthält.
EP98955704A 1997-11-20 1998-11-20 Sicherheitsinformationsträger Expired - Lifetime EP1034536B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9714609 1997-11-20
FR9714609A FR2771111B1 (fr) 1997-11-20 1997-11-20 Document de securite comportant des particules magnetiques
PCT/FR1998/002481 WO1999027531A1 (fr) 1997-11-20 1998-11-20 Support d'informations

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US12358317B2 (en) 2019-01-30 2025-07-15 Koenig & Bauer Banknote Solutions Sa Process for preparing polymeric security articles

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US12358317B2 (en) 2019-01-30 2025-07-15 Koenig & Bauer Banknote Solutions Sa Process for preparing polymeric security articles

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ZA9810576B (en) 1999-05-20
ES2185229T3 (es) 2003-04-16
ATE219598T1 (de) 2002-07-15
FR2771111A1 (fr) 1999-05-21
WO1999027185A1 (fr) 1999-06-03
AU1245399A (en) 1999-06-15
AR013768A1 (es) 2001-01-10
DE69806181T2 (de) 2003-02-13
DE69808331D1 (de) 2002-10-31
FR2771111B1 (fr) 1999-12-17
WO1999027531A1 (fr) 1999-06-03
AU1245299A (en) 1999-06-15
EP1034536A1 (de) 2000-09-13
EP1034330B1 (de) 2002-09-25
ATE224978T1 (de) 2002-10-15
DE69808331T2 (de) 2003-08-07
EP1034330A1 (de) 2000-09-13
ES2178281T3 (es) 2002-12-16
DE69806181D1 (de) 2002-07-25

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