WO2005035272A2 - Wertdokument - Google Patents
Wertdokument Download PDFInfo
- Publication number
- WO2005035272A2 WO2005035272A2 PCT/EP2004/011135 EP2004011135W WO2005035272A2 WO 2005035272 A2 WO2005035272 A2 WO 2005035272A2 EP 2004011135 W EP2004011135 W EP 2004011135W WO 2005035272 A2 WO2005035272 A2 WO 2005035272A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- value
- feature substance
- value document
- substance
- document
- Prior art date
Links
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Classifications
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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
- 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
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
- B42D25/382—Special inks absorbing or reflecting infrared light
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S283/00—Printed matter
- Y10S283/901—Concealed data
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S283/00—Printed matter
- Y10S283/904—Credit card
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/916—Fraud or tamper detecting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24934—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including paper layer
Definitions
- the invention relates to a value document, in particular a banknote, with a value document substrate and different feature substances for checking the value document.
- a document of value is known from the publication WO 97/39428, the substrate of which in one area has various machine-authenticated authenticity features for different security levels.
- the value document contains a machine-authenticated low security feature that is formed from a single material. When queried, the low security feature provides a yes / no response indicating the presence or absence of the queried property.
- the low security feature is used for authenticity checking in applications in which a simple detector is used, for example in retail outlets.
- Another high-security feature which can also be machine-authenticated, has properties that are difficult to prove and enables a more in-depth query of the value document and authentication at a much higher level.
- Checking the high security feature is complex and takes place, for example, in central banks.
- This high security feature is a homogeneous mixture of two substances with different physical properties, such as the excitation wavelength for luminescence emission or coercivity etc.
- the object of the invention is to propose a generic document of value which, in addition to increased security against forgery, also includes a possibility of recognizing the value.
- value recognition is understood to mean the evaluation of coded information for a specific group of users.
- the coded information can represent, for example, the denomination, the currency, the series, the country of issue or other features of the banknote.
- the document of value according to the invention has a first feature substance, which is introduced into the volume of the substrate of the value document, and a second and third feature substance, which are applied to the value document substrate together and in the form of a coding in a printing ink.
- the second feature substance is formed by a luminescent substance and the third feature substance by a material that absorbs in a special spectral range.
- this combination creates a complex system of features that is very difficult for a counterfeiter to reproduce.
- the feature system allows users from different user groups to have both a real and a value recognition on the document.
- the feature substances used by the various user groups and their characteristic properties are completely separated from one another.
- users of a user group can use a characteristic property of the first feature substance for authenticity testing and the absorbent material applied in coded form for value recognition.
- Users of another group of users can use a characteristic property, in particular the luminescence, of the second feature substance for the authenticity check and use the coding formed by the luminescence substance for value recognition.
- users from both user groups can carry out an authenticity check on the document without great additional effort, in addition to an authenticity check.
- the exact execution of the authenticity check and the value recognition is described in detail below.
- These user groups can be central banks, commercial banks, any trading companies, such as local transport companies, department stores or vending machine operators, etc.
- the first feature substance is essentially evenly distributed in the volume of the value document substrate, so that sufficiently large volume elements of the same size each contain essentially the same amount of the first feature substance.
- the distribution of the first feature substance can be regular, for example done in a given pattern.
- the first feature substance is preferably introduced into the substrate volume with a random distribution.
- the marking substance can also be introduced into the near-surface volume area of the paper substrate.
- the methods described in EP-A-0 659935 and DE 101 20 818, for example, are suitable for this purpose, in which the particles of the first marking substance are mixed with a gas stream or a liquid stream and introduced into a wet paper web. To this extent, the disclosures of the cited documents are included in the present application.
- a feature substance that absorbs in the infrared spectral range is preferably selected as the third feature substance.
- “infrared spectral range” is understood to mean the wavelength range from 750 nm and larger, preferably 800 nm and larger.
- the third feature substance is preferably essentially colorless in the visible spectral range or has only a weak intrinsic color. The third feature substance is then less common Illumination conditions are not recognizable or appear only slightly conspicuous.
- the infrared absorbing feature substance does not provide an active signal that would facilitate an analysis of the substance used.
- the third feature substance advantageously does not yet have any significant absorption even at a wavelength of about 800 nm, so that it cannot be detected even with commercially available infrared detectors based on silicon.
- the third feature substance preferably exhibits significant absorption only in the spectral range above approximately 1.2 ⁇ m, preferably in the spectral range between approximately 1.5 ⁇ m and approximately 2.2 ⁇ m. The infrared absorption of the third feature substance can then only be detected with complex and little-used detectors, which gives the coding formed a high level of security against forgery.
- a substance based on doped semiconductor material is used, for example, as the infrared absorbing feature substance.
- Substances that contain a metal oxide are also suitable and are characterized in particular by their resistance to aging.
- the third feature substance is preferably in particle form with an average particle size of less than 50 nm.
- Examples of the infrared absorbers used as the third feature substance in the invention which have no appreciable absorption either in the visible or at about 800 nm, are about 2,5-cyclo-hexadiene-l, 4-diylidene-bis [N, N-bis ( 4-dibutylaminophenyl) ammonium jbis (hexafluoro-antimonate) with the formula C62H92N 6 F ⁇ 2 Sb, the dyes ADS 990 MC with the formula C 32 H3oN2S 4 Ni, or ADS 1120P with the formula C52H4 CI2O6 from Siber daregner GmbH, Hamburg, Hamburg According to an advantageous further development of the invention, a fourth feature substance is applied, preferably printed, to the value document substrate.
- the fourth feature substance can additionally or alternatively the first feature substance can be used to check the authenticity of the value document.
- the series or the respective up-grade e.g. a banknote issue.
- the first feature substance is present in a currency that was originally issued and the first and fourth feature substance in the currency up grade. After a certain transition period, it is conceivable to use only the fourth feature substance.
- the first feature substance and / or the fourth feature substance can also be formed by a luminescent substance or a mixture of luminescent substances.
- luminescent substances or mixtures are preferably used which emit in the infrared spectral range and which in particular have a complex, difficult-to-adjust spectral emission characteristic. This emission characteristic can be used in particular to distinguish the luminescent substances from similar luminescent substances. However, it can also be used to generate a coding by the shape of the emission or / and excitation spectra of the luminescent substances.
- the third feature substance is an infrared absorbent
- the excitation of the first feature substance is advantageously carried out in the infrared spectral range, preferably in the spectral range from approximately 0.8 ⁇ m to approximately 1.0 ⁇ m.
- At least one of the luminescent feature substances is preferably a luminescent substance based on a host lattice doped with rare earth elements.
- a host lattice doped with rare earth elements Several or all of the luminescent substances based on such a doped host lattice can also be formed. These luminescent substances can e.g. are excited by the fact that radiation is radiated directly into the absorption bands of the rare earth ions.
- absorbing host lattices or so-called “sensitizers” can also be used, which absorb the excitation radiation and transmit it to the rare earth, which then emits with luminescence. It is understood that the host lattice and / or the dopants are different for the different feature substances can to get different excitation and / or emission ranges.
- the host lattice absorbs up to about 1.1 ⁇ m in the visible spectral range and optionally, in particular in the case of the first or fourth feature substance, in the near infrared range.
- the excitation can then take place with high effectiveness via light sources such as halogen lamps, LEDs, lasers, flash lamps or xenon arc lamps, so that only small amounts of the luminescent substance are required. This makes it possible, on the one hand, to apply the luminescent substance using customary printing processes, and on the other hand, the small amount of substance makes it difficult for potential counterfeiters to detect the substance used.
- the host lattice also absorbs up to about 1.1 ⁇ m in the near infrared, easily detectable emission lines of the rare earth ions can be suppressed so that only the more complex to detect emission remains at longer wavelengths.
- lurninescent substances are used which absorb even in the visible spectral range, preferably over the largest part of the visible spectral range, particularly preferably into the near infrared range. Even then, emissions in these more accessible spectral ranges are suppressed.
- the host lattice can have, for example, a perovskite structure or a garnet structure and can be doped with a rare earth element emitting in the infrared spectral range, such as praseodymium, neodymium, dysprosium, holmium, erbium, thulium or ytterbium. Further possible configurations of the host lattice and of the dopant are listed in EP-B-0052624 or EP-B-0 053124, the disclosures of which are included in the present application.
- the coding extends over a predominant part of a surface of the document of value, in particular over the substantially entire surface of the document of value. This further increases the security against forgery of the value document, since gaps or inserted parts of other documents, including other real documents, become noticeable as a coding error.
- the coding or part of the coding can be provided with a certain offset from document to document. If the documents are produced in endless format, this can be the case can be achieved by using a printing roller, the scope of which is a non-integer multiple of the document size. A series of successive documents can then contain a coding of the same content or the same form, the individual documents being distinguishable from one another at the same time due to the different offset. The same result can be achieved in sheetfed printing if several printing plates with mutually offset codes or coding parts are used in accordance with the desired repetition rate.
- the coding formed by the second and third feature substance can represent any type of characters or patterns, such as an alphanumeric character string. In the context of the invention, however, it is preferred that the coding represents a bar code.
- the barcode is understood to be any one- or two-dimensional pattern that consists of stripes or areas with the feature substances (“bars”) and strips or areas between the bars or areas without feature substances (“gaps”).
- the bar / gap sequence represents a binary sequence of numbers that represents any information, including encrypted information, about the value document.
- the barcode can be invisible to the naked eye in particular and can only be detected in a special spectral range by its emission or absorption after irradiation with a suitable light source. Barcodes are particularly suitable for machine reading and, especially in conjunction with check digits, deliver an almost error-free reading result. For example, common formats such as code 2/5, code 2/5 interleaved, code 128 or code 39, but also special formats used only for the value documents according to the invention are possible as bar codes. Even two-dimensional barcodes, which are particularly condensed drawing and increased redundancy, which makes them insensitive to production tolerances, can be used.
- the value document substrate is preferably a printed or unprinted cotton fiber paper, cotton / synthetic fiber paper, a cellulose-containing paper or a coated, printed or unprinted plastic film.
- a laminated multilayer substrate can also be used.
- the material of the substrate is not essential for the invention insofar as it only allows the introduction or application of the required characteristic substances. It goes without saying that the value document can be provided with further feature substances or further printing layers in addition to the substances mentioned.
- the documents of value according to the invention are preferably banknotes, shares, credit cards, identity or identity cards, passports of any kind, visas, vouchers etc.
- the second and third feature substances are applied to the document substrate using a printing method.
- a printing method for example, a gravure, screen, high pressure, flexographic, inkjet, digital, transfer or offset printing process can be used.
- the printing inks used for this can be transparent or contain additional color pigments which must not impair the detection of the feature substances.
- the luminescent substances they preferably have transparent regions in the excitation and in the considered emission region of the luminescent substances.
- a fourth feature substance it can in principle be applied to the value document in any form and distribution. However, it is preferred to also print the fourth feature substance in the form of a coding on the value document substrate. According to an advantageous embodiment, the fourth feature substance can be added to a printing ink, in particular a visible printing ink, and can be printed together with this printing ink on the value document substrate. The fourth feature substance is generally applied separately from the second and third feature substance, but can also be printed together with these in a common printing ink.
- the codes formed by the second and third or fourth feature substance can be of the same or of a different type.
- the second and third feature substance can be applied in the form of a barcode and the fourth feature substance in the form of an alphanumeric character string.
- the document of value has a further printing layer which partially or completely covers the areas of the document of value provided with the second and third feature substance.
- the print layer can be opaque in the visible spectral range and transparent or translucent in the emission range of the second feature substance and / or in the absorption range of the third feature substance.
- the print layer then hides the presence of the second and third feature substance in the visible spectral range, but allows, however, the detection of the luminescence of the second feature substance or the absorption of the third feature substance at the corresponding wavelengths. If the print layer completely covers the areas of the value document provided with the second and third feature substance, it must be in the emission area of the second feature substance as well as in the absorption area. rich of the third feature substance to be transparent or translucent in order to allow a recording of the respective feature properties.
- the authenticity of the value document is checked and a value recognition of the document is carried out by at least one characteristic property of the first and / or second feature substance for checking the authenticity of the value document and by the second and / or third feature substance formed coding is used to recognize the value of the value document.
- the authenticity and the value recognition of the value document are preferably determined by different user groups on the basis of different feature substances. This means that if the user belongs to a first user group, the authenticity of the value document is determined on the basis of at least one characteristic property of the first feature substance and the value recognition is carried out by means of the coding represented by the third feature substance.
- the user belongs to a second user group, at least one characteristic property of the second feature substance is available for authenticity detection and the coding formed by the second feature substance is available for value detection.
- the test systems of the different user groups are thus completely decoupled because different feature substances are evaluated. This means that if there are counterfeits in a user group, this security gap does not affect any other user groups.
- the value document is provided with a fourth feature substance, the checking or processing by a user of the first user group can be carried out by using at least one characteristic property of the first and / or fourth feature substance to check the authenticity of the value document.
- the coding formed by the third feature substance is also used here to recognize the value of the value document. For example, some of the users from the first user group can use the first feature substance for the authenticity check, another part the fourth feature substance.
- the checking or processing by users of the second user group remains unchanged.
- the value recognition by a user of the first user group is preferably carried out by irradiating the coding with radiation from the absorption area of the third feature substance, determining the absorption of the coding at a wavelength from the radiation area and the value recognition on the basis of the measured Absorption is carried out.
- the coding is advantageously irradiated in the infrared spectral range and the absorption is expediently determined by a spatially resolved measurement of the transmitted and / or remitted infrared radiation.
- the value can be recognized by a user of the first user group by irradiating at least a partial area of the value document with radiation from the excitation area of the luminescent first feature substance, the emission of the first feature substance at a wavelength from the absorption area of the third feature substance. is determined and the value recognition is carried out on the basis of the measured emission.
- This alternative variant is based on an interaction between the properties of the first and third feature substances. It assumes that the first feature substance is a luminescent substance that emits in the absorption area of the third feature substance.
- the absorption of the third feature substance is not determined by a remission or transmission measurement as in the previously described method, but by the luminescence emission of the first which is locally suppressed in the area of the coding
- the third feature substance does not absorb at a certain emission wavelength of the first feature substance, while it absorbs at least part of the emission radiation at a certain emission wavelength of the fourth feature substance.
- the emission of the first feature substance at a certain wavelength is thus the expected 100%, while the emission of the fourth feature substance at another certain wavelength is e.g. 50%, based on the expected 100%.
- a certain absorber can be easily detected. In counterfeiting it is therefore not sufficient to use any absorbent substance, but the absorber must also have a very specific spectrum which interacts with the spectrum of the first and / or fourth feature substance.
- the radiation is preferably carried out in the infrared spectral range, for example at 0.8 ⁇ m to 1.0 ⁇ m, and the emission is measured in a spatially resolved manner to demonstrate the local absorption.
- the described method additionally allows the measured emission curve to be standardized. If the absorbing coding imprint is located on the front side of the value document, in addition to the front-side luminescence emission modulated by absorption, the rear-side luminescence emission is also measured. The back of the document of value is irradiated with excitation light and the essentially constant backside emission of the first marking substance is recorded as a reference value. The front-side emission can then be related to this reference value and thereby normalized. Alternatively, it is also possible to standardize the modulated front-side lurninescences ission to the emission of the unprinted areas.
- users of the second user group irradiate the coding advantageously with radiation from the excitation area of the second feature substance.
- the emission of the coding is determined at at least one wavelength from the emission range of the second feature substance and the authenticity check and / or the value determination is carried out on the basis of the determined emission.
- the second feature substance is preferably irradiated with visible and / or infrared radiation and the emission of the second feature substance is determined in the infrared spectral range.
- the irradiation is advantageously carried out using a light-emitting diode or laser diode.
- the use of the infrared-absorbing third feature substance for the first user group is more secure than the luminescence coding formed by the second feature substance.
- the automatic readability of the IR Coding only slightly disturbed by an underlying background print.
- contamination in the infrared spectral range is considerably less disturbing than in the visible and in the ultraviolet spectral range.
- the signal-to-noise ratio of a measuring head is also significantly better for remission measurements than for luminescence measurements, so that a higher resolution can be achieved.
- FIG. 1 shows a schematic illustration of a banknote according to an exemplary embodiment of the invention
- FIG. 2 shows a section through the banknote of FIG. 1 along the line II-II,
- FIG. 3 shows the course of the infrared absorption of the banknotes of FIGS. 1 and 5, in each case along the line 111-111,
- Fig. 5 is a schematic representation of a banknote according to another embodiment of the invention.
- the invention will now be explained using the example of a banknote. 1 and 2 show a schematic illustration of a bank note 10 which is equipped with different feature substances for testing by different user groups.
- 1 shows a top view of the banknote 10
- FIG. 2 shows a cross section along the line II-II of FIG. 1.
- a first feature substance 14 in the form of particles is uniformly distributed in the volume of the paper substrate 12 of the bank note 10.
- the particles of the first feature substance 14 can be added to the paper or fiber mass before the sheet formation or can be introduced into the fiber matrix only after the layer formation.
- the first feature substance 14 is a mixture of different luminescent substances which, after excitation, emits radiation with a complex and difficult to reproduce spectral distribution in the infrared spectral range.
- a second feature substance 16 and a third feature substance 18 are printed together in a printing ink 20 and in strip form on the front of the bank note 10.
- the width of the individual strips 22 and the width of the respective spaces 24 represent a bar code in which the denomination and the currency of the bank note 10 are stored in encrypted form.
- the bar code 22, 24 extends essentially over the entire area of the bank note 10.
- the second feature substance 16 is formed by a luminescent substance and the third feature substance 18 by an infrared absorbing material.
- the second feature substance 16 specifically selected so that its luminescence can be easily excited and detected using commercially available detectors.
- the infrared-absorbing third feature substance 18 is transparent in the visible spectral range up to wavelengths of approximately 0.8 ⁇ m, so that its presence in the bar code 22, 24 is neither recognizable with the naked eye nor can it be detected using commercially available infrared detectors.
- the authenticity check and the value recognition can now be carried out by two different user groups using different combinations of the feature substances 14, 16 and 18, or their arrangement.
- the banknote 10 of the exemplary embodiment is designed for a first user group with high security requirements and a second user group with comparatively low security requirements.
- the second user group can be, for example, simple machines accepting banknotes in parking lots or vending machines. Inexpensive detection devices for authenticity testing and value recognition are particularly useful for this application.
- a user of the second user group checks the authenticity of a bank note 10 by irradiating the bank note with light from the excitation area of the second feature substance 16 and detecting the corresponding luminescence signal. If a correct luminescence signal is received, the banknote is rated as genuine by the user. Because of the choice of the luminescent substance 16, this detection can be carried out using commercially available, inexpensive detectors. If the banknote is recognized as genuine, its value can, if required, be coded by the luminescent substance 16. tion 22, 24 are removed. The authenticity check and the value recognition can of course also be carried out in one step.
- the first feature substance 14 with its complex spectral emission serves as an authenticity indicator.
- the first user group can include banks, for example, in which the authenticity of the banknotes is checked using high-quality and complex detectors.
- a bank note is examined for testing with light from the excitation area of the first feature substance 14 and the correct spectral response of the feature substance is evaluated.
- the authenticity check is preferably based not only on the determination of the correct luminescence emission, but also on a more in-depth analysis of the emission spectrum, half-widths and / or luminescence peak distances and / or decay times etc. being assessed.
- the value recognition of the banknote is carried out by a user of the first user group using the infrared-absorbing third feature substance 18.
- the feature substance 18 is transparent in the near infrared, but absorbs at longer wavelengths, in the exemplary embodiment in the range around 1.5 ⁇ m.
- the information content of the bar code 22, 24 can thus be read out with a complex infrared detector at a wavelength of 1.55 ⁇ m by a reflectance measurement.
- 3 schematically shows the course of the infrared absorption 26 measured at 1.55 ⁇ m along the line III-III of FIG. 1. From the sequence of the absorption maxima 28 and absorption minima 30, the pattern in the line pattern 22, 24 coded information can be read.
- the complex evaluation of the coding 22, 24 with the aid of the infrared-absorbing third feature substance simultaneously carries out an additional authenticity check of the bank note 10 for the first user group. If no or an invalid coding is recognized during the value recognition in the infrared absorption 26, the banknote can be classified as not authentic, even if the checking of the first feature substance did not produce any abnormalities. Even a replication of the coding with the luminescent second feature substance, for example based on an analysis of a detection device of the second user group, is not sufficient to deceive the value recognition of the first user group.
- the two user groups use non-overlapping feature substance systems for authenticity checking and value recognition. This results in a significant advantage that an analysis of a comparatively easily accessible device for verifying the authenticity of the second user group does not give any indication of the procedure and the basics of the authenticity check or the value recognition of the first user group.
- the system has the advantage that both groups of users check the identical information, since the two value recognition substances are printed in a common mixture in coded form, and yet the value recognition is completely decoupled by checking different physical properties.
- a fourth feature substance 32 can be printed on the bank note 10 in the form of a further coding 34.
- the further coding can also be designed as a bar code or as an alphanumeric character string, as indicated in FIG. 1.
- the fourth feature substance is a further luminescent substance 32, which is admixed with a visible printing ink 36.
- the Printing ink 36 and the luminescent substance 32 is a printed image, for example the denomination and the currency of the note, or a graphic motif printed on the banknote substrate 12.
- the fourth feature substance 32 is a luminescent substance based on a host crystal doped with a rare earth element, which, upon excitation in the visible spectral range, shows a luminescence in the infrared spectral range at approximately 2.0 ⁇ m and does not emit in the visible and near infrared.
- the luminescence of the fourth feature substance 32 cannot be detected with common detectors that are sensitive to a maximum of 1.1 ⁇ m.
- the fourth feature substance 32 can therefore be used by the users of the first user group as an alternative or in addition to the first feature substance 14 for a high-quality authenticity check.
- the first feature substance 14 chosen is a luminescent substance which emits above 1.2 ⁇ m, in particular at the test wavelength of 1.55 ⁇ m used subsequently.
- luminescent substances based on rare earth-doped host lattices have such an IR emission.
- FIG. 4 (a) shows the course 40 of the luminescence emission measured on the back of the bank note along the line III-III at the test wavelength of 1.55 ⁇ m after excitation of the first feature substance 14. Since the first feature substance 14 is evenly distributed in the substrate 12 and the back of the banknote contains no absorbent structures, there is a constant Emission signal 40, the size of which can serve as a reference value for the subsequent front measurement.
- the course 42 shown in FIG. 4 (b) results.
- the luminescence emission of the first feature substance 14 is absorbed by the third feature substance 18, so that a minimum 44 arises in the luminescence curve 42.
- the emitted radiation passes through the gaps 24 of the coding, possibly with a certain weakening through further printed layers of the bank note, and leads to areas 46 with a large luminescence signal in the luminescence measurement.
- the encoded information can be read out again via the width of the luminescence maxima and minima.
- the last-described readout method for the coding 22, 24 is based on an interaction of the material properties of the luminescent substance 14 and the infrared-absorbing feature substance 18, which is extremely difficult for a counterfeiter to reproduce and therefore offers a very high level of protection against counterfeiting.
- the first strip 22 of the coding is arranged at a certain distance 48 from the left edge of the bank note 10. If this spacing 48 is varied for different baricnotes of the same series, for example by using different printing plates with a different spacing 48, additional protection against forgery is obtained since gaps or inserted parts of other banknotes are a disturbance in the coding 22, 24 for both user groups to make noticable. For example, it can be provided that only certain combinations of stripe widths 22 and gap widths 24 form permissible codes. Strips that are too wide or too narrow, as can easily occur when attempting to manipulate the banknote, are recognized as inadmissible when the banknotes are checked and the banknote is rejected as manipulated.
- FIG. 5 A further exemplary embodiment of a bank note 50 according to the invention is shown in FIG. 5.
- the bank coding 50 has the strip coding 52, 54 tilted by a certain angle ⁇ against the vertical.
- the first strip 52 is at the lower edge of the bank note 50 a certain distance 56 from the left edge of the note, which is varied within the bank notes of a series.
- Manipulation attempts on the banknote 50 are thus easily recognizable for both user groups, since gaps or inserted parts of other notes immediately lead to a sensitive disturbance of the tilted stripe pattern.
Landscapes
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Inspection Of Paper Currency And Valuable Securities (AREA)
- Credit Cards Or The Like (AREA)
- Braking Elements And Transmission Devices (AREA)
- Valve Device For Special Equipments (AREA)
- Holo Graphy (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04790136A EP1675731B1 (de) | 2003-10-08 | 2004-10-05 | Wertdokument |
DE502004009862T DE502004009862D1 (de) | 2003-10-08 | 2004-10-05 | Wertdokument |
MXPA06003761A MXPA06003761A (es) | 2003-10-08 | 2004-10-05 | Documento de valor. |
US10/575,080 US7906201B2 (en) | 2003-10-08 | 2004-10-05 | Value document |
AT04790136T ATE438517T1 (de) | 2003-10-08 | 2004-10-05 | Wertdokument |
TNP2006000101A TNSN06101A1 (en) | 2003-10-08 | 2006-04-04 | Value document |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10346631.2 | 2003-10-08 | ||
DE10346631A DE10346631A1 (de) | 2003-10-08 | 2003-10-08 | Wertdokument |
Publications (2)
Publication Number | Publication Date |
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WO2005035272A2 true WO2005035272A2 (de) | 2005-04-21 |
WO2005035272A3 WO2005035272A3 (de) | 2006-02-23 |
Family
ID=34428219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/011135 WO2005035272A2 (de) | 2003-10-08 | 2004-10-05 | Wertdokument |
Country Status (8)
Country | Link |
---|---|
US (1) | US7906201B2 (de) |
EP (1) | EP1675731B1 (de) |
AT (1) | ATE438517T1 (de) |
DE (2) | DE10346631A1 (de) |
MX (1) | MXPA06003761A (de) |
RU (1) | RU2365511C2 (de) |
TN (1) | TNSN06101A1 (de) |
WO (1) | WO2005035272A2 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1826728A2 (de) * | 2006-02-22 | 2007-08-29 | Giesecke & Devrient GmbH | Lasermerkierbares Sicherheitselement |
WO2008028477A2 (de) * | 2006-09-08 | 2008-03-13 | Bundesdruckerei Gmbh | Sicherheits- und/oder wertdokument mit einem typ ii halbleiterkontakt system |
RU2507076C2 (ru) * | 2008-04-23 | 2014-02-20 | Хайдельбергер Друкмашинен Акциенгезельшафт | Способ изготовления защитного признака на плоской основе |
EP2004419B2 (de) † | 2006-04-12 | 2018-08-22 | Bundesdruckerei GmbH | Verfahren zur aulesung eines sicherheitsmerkmals eines sicherheits- und/oder wertdokument und verfahren zu prüfung des sicherheits- und/oder wertdokuments |
EP2946139B1 (de) | 2013-01-17 | 2020-07-08 | Spectra Systems Corporation | Verdeckte beschichtung zur authentifizierung von materialien |
WO2024042213A1 (fr) | 2022-08-25 | 2024-02-29 | Oberthur Fiduciaire Sas | Procédé d'authentification ou d'identification d'un document de sécurité |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005055682A1 (de) * | 2005-11-22 | 2007-05-24 | Giesecke & Devrient Gmbh | Vorrichtung für die Überprüfung der Echtheit von Banknoten |
DE102010014912A1 (de) * | 2010-04-14 | 2011-10-20 | Giesecke & Devrient Gmbh | Sensor zur Prüfung von Wertdokumenten |
CN102968927B (zh) * | 2012-11-02 | 2015-11-18 | 吴建辉 | 防伪标签、防伪标签的识别装置及方法 |
DE102013206130B4 (de) * | 2013-04-08 | 2018-06-21 | Bundesdruckerei Gmbh | Multilumineszentes Sicherheitselement und dieses enthaltendes Wert- oder Sicherheitsdokument |
DE102017008863A1 (de) | 2017-09-21 | 2018-05-30 | Daimler Ag | Verfahren zum Betrieb eines autonom fahrenden Fahrzeugs mit einer an den Verkehr angepassten Fahrweise |
US11275979B2 (en) * | 2018-08-17 | 2022-03-15 | Olof Kyros Gustafsson | Note backed by cryptocurrency |
DE102018129365A1 (de) * | 2018-11-21 | 2020-05-28 | Bundesdruckerei Gmbh | Codierungssystem zum Ausbilden eines Sicherheitsmerkmals in oder an einem Sicherheits- oder Wertdokument oder einer Mehrzahl von Sicherheits- oder Wertdokumenten |
DE102021002495A1 (de) | 2021-05-11 | 2022-11-17 | Giesecke+Devrient Currency Technology Gmbh | Sicherheitselement mit Lumineszenzmerkmal und Datenträger mit einem solchen Sicherheitselement |
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-
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- 2004-10-05 MX MXPA06003761A patent/MXPA06003761A/es active IP Right Grant
- 2004-10-05 AT AT04790136T patent/ATE438517T1/de not_active IP Right Cessation
- 2004-10-05 RU RU2006115178/12A patent/RU2365511C2/ru active
- 2004-10-05 EP EP04790136A patent/EP1675731B1/de not_active Expired - Lifetime
- 2004-10-05 DE DE502004009862T patent/DE502004009862D1/de not_active Expired - Lifetime
- 2004-10-05 US US10/575,080 patent/US7906201B2/en active Active
- 2004-10-05 WO PCT/EP2004/011135 patent/WO2005035272A2/de active Application Filing
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EP1826728A2 (de) * | 2006-02-22 | 2007-08-29 | Giesecke & Devrient GmbH | Lasermerkierbares Sicherheitselement |
EP2004419B2 (de) † | 2006-04-12 | 2018-08-22 | Bundesdruckerei GmbH | Verfahren zur aulesung eines sicherheitsmerkmals eines sicherheits- und/oder wertdokument und verfahren zu prüfung des sicherheits- und/oder wertdokuments |
WO2008028477A2 (de) * | 2006-09-08 | 2008-03-13 | Bundesdruckerei Gmbh | Sicherheits- und/oder wertdokument mit einem typ ii halbleiterkontakt system |
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EP2946139B1 (de) | 2013-01-17 | 2020-07-08 | Spectra Systems Corporation | Verdeckte beschichtung zur authentifizierung von materialien |
WO2024042213A1 (fr) | 2022-08-25 | 2024-02-29 | Oberthur Fiduciaire Sas | Procédé d'authentification ou d'identification d'un document de sécurité |
FR3139029A1 (fr) | 2022-08-25 | 2024-03-01 | Oberthur Fiduciaire Sas | Procédé d’authentification ou d’identification d’un document de sécurité |
Also Published As
Publication number | Publication date |
---|---|
EP1675731A2 (de) | 2006-07-05 |
US7906201B2 (en) | 2011-03-15 |
TNSN06101A1 (en) | 2007-11-15 |
MXPA06003761A (es) | 2006-06-14 |
EP1675731B1 (de) | 2009-08-05 |
DE10346631A1 (de) | 2005-05-19 |
RU2006115178A (ru) | 2008-01-10 |
WO2005035272A3 (de) | 2006-02-23 |
US20070257482A1 (en) | 2007-11-08 |
ATE438517T1 (de) | 2009-08-15 |
RU2365511C2 (ru) | 2009-08-27 |
DE502004009862D1 (de) | 2009-09-17 |
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