EP2050046A2 - Document de sécurité et/ou de valeur avec un motif de composants modifiés par rayonnement - Google Patents

Document de sécurité et/ou de valeur avec un motif de composants modifiés par rayonnement

Info

Publication number
EP2050046A2
EP2050046A2 EP07801222A EP07801222A EP2050046A2 EP 2050046 A2 EP2050046 A2 EP 2050046A2 EP 07801222 A EP07801222 A EP 07801222A EP 07801222 A EP07801222 A EP 07801222A EP 2050046 A2 EP2050046 A2 EP 2050046A2
Authority
EP
European Patent Office
Prior art keywords
radiation
security
document
modified component
value document
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.)
Granted
Application number
EP07801222A
Other languages
German (de)
English (en)
Other versions
EP2050046B1 (fr
Inventor
Malte Pflughoefft
Andreas Hoppe
Oliver Muth
Edward Springmann
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.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Publication of EP2050046A2 publication Critical patent/EP2050046A2/fr
Application granted granted Critical
Publication of EP2050046B1 publication Critical patent/EP2050046B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • 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
    • G07D7/0043—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 using barcodes
    • 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
    • G07D7/0047—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 using checkcodes, e.g. coded numbers derived from serial number and denomination
    • 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
    • G07D7/005—Testing security markings invisible to the naked eye, e.g. verifying thickened lines or unobtrusive markings or alterations
    • 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
    • G07D7/06—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 wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser
    • B42D2035/34—

Definitions

  • the invention relates to a security and / or value document with a substrate and with a printing layer arranged on the substrate, a method for producing such a security and / or
  • Value document and a method for verifying such a security and / or value document.
  • security and / or value documents of the type mentioned are known. They typically carry information, be it about a value, be it about an owner or bearer of the security and / or value document.
  • a classic verification of a security and / or value document includes the reading of machine-readable security features and their comparison with a
  • a constant problem of security and / or value documents is the provision of security and / or value documents with security features that further complicate or prevent counterfeiting. In this case, security features that are exclusively machine-readable play a special role, since they can not be perceived by a human observer and thus their existence and nature are hidden from unauthorized persons.
  • tags are known.
  • a marking substance is applied to the document whose individual structure must be stored either on the document or in a central database. Both are complex in terms of the required infrastructure for the production and / or verification of the document and the security feature is not verifiable by itself.
  • the invention is based on the technical problem of specifying a security and / or value document which carries a security feature which is not recognizable to the human eye and which, moreover, is improved against counterfeiting. Furthermore, the invention is based on the technical problem of providing such a security feature which additionally allows a higher data density of the pattern.
  • holographic structures or objects with diffractive properties which are produced by imprinting into a photopolymer are known. Such structures may not be visible to the human eye, but may use wavelength ranges outside of visible light for detection.
  • the invention teaches that the first portions of the document have a non-radiation-modified component or 'a small radiation-modified component, and in that second sections of the document contain a radiation-modified component, or more radiation-modified component, the radiation-modified component is non-radiation modified by the Component only distinguished by radiation-induced structural differences, and wherein the first partial areas with the human eye from the second partial areas not, however, the first partial areas are distinguishable by means of apparatus measuring means of the second partial areas.
  • the subregions may be arranged in and / or on the printing layer and / or in and / or on the substrate (also between substrate and printing layer).
  • Preferably excluded from the invention are not for the human eye without technical aids visible holographic patterns or diffractive structures.
  • the first and second subareas may be arranged in the substrate or in the printing layer. But it is also possible that they are arranged in a cover layer.
  • the invention provides a security and / or value document which, on the one hand, carries personal and / or machine-readable information and at the same time, on the other hand, contains a security feature not visible to the human eye, by means of which the authenticity can be verified by comparison with a reference security feature and / or the information of the security and / or value document can be verified.
  • a very high data density can be achieved since, due to the visibility that is not given to the human eye, large areas of the document, up to the entire surface of the document, are available for the security feature according to the invention. A disturbance of the visual impression for the human eye does not take place.
  • Parts of an existing pattern or a string by exposure to radiation can run a variety of chemical and / or physical processes.
  • the radiation modification can cause a color to fade, with various chemical and / or physical processes can be responsible for this.
  • These include photochemical radical formation, degradation due to thermal effects or other aging processes.
  • it may also be a photochemical cleavage, for example analogous to the classical silver deposition.
  • photoinduced reactions free-radical or ionic, are possible.
  • photophysical processes such as light-induced rearrangement of the molecular geometry, for example, as in rhodopsin or stilbenes with a changing absorption spectrum, are possible.
  • polarization-dependent properties of the component for example the excitation probability in the case of radiation exposure or the absorption in the detection with the measuring means, can be used.
  • the first subareas may form a defined pattern and preferably encode information or represent such information, for example as a string.
  • the coded or represented information may correspond to the information which is independently of the security feature according to the invention in the document, typically in the print layer, attached and possibly (even) person readable or with information stored in a central memory and correlated with the document , but not on the document (otherwise) are appropriate.
  • the radiation-modified component as well as the non-radiation-modified component can be a colorant, for example, a dye or pigment.
  • Suitable colorants are described in "Ullmann's Encyclopedia of Industrial Chemistry” (Wiley-VCH Verlag, electronic release 2006) under the heading “Dyes and Pigments”. They may, for example, be selected from the group consisting of "anthraquinone, azine, azo, benzoquinone, naphthoquinone, cationic, disperse, fluorescence, indigo, laser, leuco, luminescent, naphthalimide, nitro , Nitroso, reactive, sulfur, triarylamine, diarylamine dyes and / or pigments, and metallic
  • the component does not necessarily have to be a visible color light colorant It is preferred if the component is neither radiation modified nor radiation modified visible to the human eye, for example a (colorless) component whose fluorescence intensity Depending on radiation exposure (eg chelate complexes of rare earths), a pattern or a string is introduced into the document exclusively by such a fluorescent component, so that it is virtually impossible to examine the human eye without auxiliary means a component which has a particularly high sensitivity for the radiation modification with the radiation used.
  • the pattern may be a similar pattern for different security and / or value documents. Then, the pattern is suitable for verification of one type of security and / or valuable document.
  • Document type-specific lateral patterns are: seals, coats of arms, regular or irregular surface patterns such as line coulters or guilloches, ID and 2D barcodes. These may be visible or invisible patterns, with the invisible patterns being different from the visible patterns in that the human eye, unlike a suitable detector, is unable to resolve the pattern and / or the invisible patterns Pattern first by means of technical aids, such as UV source in the case of
  • Fluorescence become visible.
  • the verification can be achieved by optical detection of the document, for example by means of a commercially available scanner, which detects color differences which are indistinguishable with the human eye, for example with 24 bits
  • the scanned pattern is analyzed, for example, by means of a correlation function, to which reference is additionally made to the document DE 103 37 877 Al.
  • the pattern can also be an individual pattern for different security and / or value documents (of the same document type), which pattern is coded in particular for identity information of the security and / or value document.
  • the following (pattern coded) data may be used: alphanumeric strings, such as personal records, parts of personal records, such as names, first names, address, date of birth, place of birth, and / or document data, pieces of document data, such as serial number, issuing office, Date of issue, expiry date, and other data, in particular digital data, public key (in the case of a document with a read-out chip or for access to centralized or decentralized databases) and / or checksums, and biometric data such as a photo, fingerprint,
  • Vein pattern of, for example, the hand or a finger, iris and / or retina is preferably a character string that uniquely identifies the document and / or the document carrier.
  • this string can also be a string not otherwise shown in the document.
  • the document is first personalized, for example, by attaching an identification number or personal data, or by an assignment of a string that is not shown on the document, and then creates a pattern that is encoded for this personalization. Subsequently, this pattern is introduced into the document (preferably near the surface, in the printing layer and / or in the substrate) the printing layer of this document.
  • a pattern can be recalculated from the personalization or related data and correlated with the pattern being read (if the pattern was generated based on the data presented on the document). Readout and correlation can be done as described above.
  • the pattern can be decoded, for example by means of the Fourier transformation, and so the data can be reconstructed instead of a correlation.
  • verification may be made by comparing the data removable from the document and that from the pattern calculated string.
  • a comparison is made using a database in which the string is correlated with the document in question. In this case, a particularly high level of security is achieved since the character sequence can not be deduced directly from other data of the document prior to decoding.
  • a transparent cover layer is arranged on the print layer of a security and / or value document according to the invention.
  • the printing layer and the substrate and thus also the pattern according to the invention are protected against environmental influences, mechanically, thermally, chemically or by radiation, in particular UV-B and / or UV-C radiation.
  • a security and / or value document according to the invention is obtainable with the following process stages:
  • a printing layer is applied to a substrate, wherein a non-radiation-modified component is contained in the printing layer and / or the substrate, both in first subregions and in second subregions of the printing layer and / or the substrate,
  • the print layer and / or the substrate is then exposed in second subregions of a radiation modification of the non-radiation-modified component-inducing radiation from a radiation source, wherein the first sub-areas are not exposed or only with lower absorbed dose rate of radiation, whereby in the second sub-areas, the radiation-modified component or the more radiation-modified component is formed,
  • the print layer is covered before or after step b) with a transparent cover layer.
  • the radiation may be selected from the group consisting of "electromagnetic radiation, such as microwave radiation, IR, visible light, UV-A, UV-B, UV-C, X-ray radiation, synchrotron radiation, and gamma radiation, and particle radiation, such as electron radiation, proton radiation "Neutron radiation, and ion radiation.” It is preferable to use IR, visible light, and / or UV, whereby filters, diffractive or reflective optics can be used during the exposure, so that individual wavelengths,
  • Wavelength ranges or continuous spectra of a radiation source can be used for radiation modification of the component.
  • the generation of the pattern can be done in different ways. What is essential is a spatially resolved modulation of the absorbed dose rate for the different subareas. This can be done by modulating the intensity and / or by modulating the duration with which a mass element of a subarea is irradiated.
  • a modulation unit may be integrated with or inherent in the radiation source, such as diodes, such as LED (Light Emitting Diode) Array or OLED (Organic Light Emitting Diode) display, and CRT (Cathode Ray Tube).
  • diodes such as LED (Light Emitting Diode) Array or OLED (Organic Light Emitting Diode) display, and CRT (Cathode Ray Tube).
  • Other modulation techniques include scan optics, Digital Micromirror Device (DMD), Liquid Crystal Display (LCD), Liquid Crystal on Silocon (LCoS), or masks.
  • DMD Digital Micromirror Device
  • LCD Liquid Crystal Display
  • LCDoS Liquid Crystal on Silocon
  • masks In the case of a mask, it may in the simplest case be a pinhole or an impermeable portion printed transparent material, such as glass or foil act.
  • the modulation can be set up continuously or in discrete steps variably (location-dependent and
  • a pulsed scanning laser a radiation source deflected via a reflective display, for example a DMD, or a radiation source modulated via a transmissive display, for example LCD, i.e.
  • a radiation source deflected via a reflective display for example a DMD
  • a radiation source modulated via a transmissive display for example LCD
  • a mask may be disposed between the radiation source and the document, which includes first mask areas that are opaque or slightly transmissive to the radiation, and which includes second mask areas that are transmissive or highly transmissive to the radiation the radiation falls exclusively or with a higher absorbed dose rate onto the second partial regions due to the second mask regions.
  • a mask may be disposed between the radiation source and the document, which includes first mask areas that are opaque or slightly transmissive to the radiation, and which includes second mask areas that are transmissive or highly transmissive to the radiation the radiation falls exclusively or with a higher absorbed dose rate onto the second partial regions due to the second mask regions.
  • an array of beam emitting beam sources may be disposed over the document, with a first sub-array being driven to emit lower dose rate radiation beams than a second subarray, thereby exposing the second portion to higher absorbed dose rate radiation than the first portion.
  • the radiation source may be selected from the group consisting of "sunlight, focused sunlight,
  • Halogen lamps UV lamps, arc lamps, mercury lamps, high-pressure lamps, gas discharge lamps, barrier discharge lamps, plasma emitters, thermal radiators, electron beam source, if necessary with converter layer, neutron beam source,
  • Proton beam source, ion beam source, laser and LED " preferably from the group consisting of" pulsable UV LEDs, pulsable UV laser diodes, frequency-multiplied Nd: YAG lasers, gamma emitters, X-ray sources, for example, Sychrotron (Bremsstrahlung), and positron emitter ", in particular one Multiple radiation source with different spectral emission wavelength ranges, for example, an RGB (red / green / blue) laser system is. With such multiple radiation sources can simultaneously
  • Exposure can be done with multiple wavelength ranges, which in turn allows the simultaneous generation of different patterns in the respective wavelength ranges. Furthermore, an optimal adaptation to a detection system can take place. Preference is given to pulsable UV light sources, such as UV LEDs or UV laser diodes, since they can be operated with a high pulse rate and a high locally concentrated intensity distribution.
  • the wavelength of the electromagnetic radiation is preferably in the range from 100 to 600 nm, in particular from 100 to 380 nm.
  • UV-C wavelength range ie 100 to 280 nm, and in particular in the range of 254/255 to 280 nm the natural ambient light at the earth's surface due to the ozone layer absorption contains these wavelengths only to a small extent, and on the other hand these wavelengths are particularly well suited for a radiation modification of the component due to their high energy. Due to the high pulsability up to the MHz-range, the pointwise dose of the exposure of the component can be extremely fine, consistent and divided into intensity levels. Specifically, for example, UV LEDs from NTT Basic Research Laboratories, Japan, based on aluminum nitride (AIN) LEDs with wavelengths in the range 200 to 300 nm in question.
  • AIN aluminum nitride
  • UV LEDs are also available from Sensor Electronic Technology, Inc., which are based on Group III nitride semiconductor systems and have wavelengths in the range of 247 to 365. Due to the very small construction of such UV light sources, a multiple arrangement, including light-optical components, is possible and it can be carried out simultaneously or sequentially consistent or individually controlled exposure processes. Further preferred are Nd: YAG lasers having wavelengths of 532, 355, 266 and 213. The invention also relates to a method for producing a security and / or value document, wherein the above method steps are realized.
  • the invention also relates to a method for verifying a security and / or value document according to the invention, wherein an electronic image of the first partial areas and the second partial areas is generated and displayed by means of apparatus measuring devices, which are sensitive to radiation-induced structural differences of the component.
  • the electronic image can be compared with a reference pattern, where in agreement the
  • the electronic image may be processed as a pattern for information encoding the pattern, and the encoded information may be decoded and displayed.
  • the decoded information can then be compared with a visible and / or machine-readable and optionally decoded reference information, in particular an identification information, attached to the security and / or value document.
  • a readout of a pattern introduced according to the invention can take place, for example, by means of a commercially available scanner with high color resolution, 12 bits up to 24 bits and more. Also can be a high-resolution, also referred to Colors and / or grayscale, CCD or CMOS camera be used. Both systems can be used to distinguish differences in color between the first areas and the second areas, which are invisible to the human eye. It may be advisable to set up a defined illumination with white light and a given color rendering index (CRI).
  • CRI color rendering index
  • value and / or security document includes in particular identity cards, passports, ID cards, access control cards, visas, tax stamps, tickets, driving licenses, motor vehicle papers, banknotes, checks, postage stamps, credit cards and adhesive labels (for example for product security).
  • a substrate of a value and / or security document is a support structure to which a print layer with information, images and the like is applied. After that, the surface of the substrate can be provided with a usually transparent cover layer.
  • Suitable materials for a substrate are all customary materials based on paper and / or plastic in question.
  • the expression of the subregions of a document designates different surface areas of the surface of the substrate and / or the printing layer. Different surface areas typically do not overlap, but adjoin one another or are separated by intermediate areas separated. As a result, a lateral resolution is set up.
  • a component refers to a molecular species or a mixture of different molecular species that
  • Radiation-modifiable It may be an inorganic or an organic molecular species.
  • non-radiation modified refers to a structural state of the component that substantially corresponds to the structural state of the component in the manufacture of the document. It should additionally be noted that a uniform radiation modification under the influence of natural ambient radiation, for example ambient light, is not a radiation modification in the sense of the invention. For the radiation-modified regions according to the invention and non-radiation-modified region remain distinguishable.
  • Structural differences refers to a molecular change of the component, in particular a change in the chemical composition, intramolecular rearrangement, or intramolecular energy states as a result of the action of radiation. Consequently, a radiation-modified component differs from the non-radiation-modified component at the molecular level, with the radiation-modified component resulting directly from the non-radiation-modified component and exclusively as a consequence of
  • the printouts of the low or higher radiation-modified component serve to distinguish radiation-induced structural differences which can be distinguished qualitatively and / or quantitatively relative to one another, in particular by means of measuring means. Therefore, the terms "low” and “stronger” are to be understood only as a relative feature in the above sense and not as an independent quantitative or semi-quantitative indication of a size. In particular, a continuous course between stronger and smaller radiation-modified areas (or vice versa) can be set up. The same applies with regard to mask areas which have strong or weak transmission.
  • a radiation used according to the invention is chosen and applied with regard to the type of radiation, radiation power or absorbed dose rate, provided that the exposure of the component to the radiation-induced structural differences leads to the component which is not exposed.
  • Low radiation modification is achieved by exposure to lower absorbed dose rate versus greater radiation modification, which uses a higher absorbed dose rate.
  • the absorbed dose rate is in the case of the use of visible light preferably in the range of 0.1 J / m 2 to 1 GJ / m 2 .
  • absorbed dose rates of 0.1 to 100 J / m 2 are sufficient. Otherwise, the absorbed dose rate need only be sufficient to produce the structural differences. While a value smaller than 0.1 J / m 2 may produce the desired effect, the durability of the pattern in the document would be questionable since the document may also be exposed to sunlight.
  • Radiation modification of so-called lightfast pigments makes sense from a range of 100 J / m 2 to 1 GJ / m 2 , wherein visible material change up to removal of material starts when the upper limit is exceeded, unless the exposure takes place for an impractically short or long time.
  • machine readability means that a security feature is not or not clearly perceptible to the naked eye in order to recognize information represented by the security feature. Rather ' are required for the detection apparatus measuring. For the detection of the information represented or encoded by the security feature, apparatus may also be necessary.
  • the methods of deep, high, flat, and through printing which are well known to those skilled in the art, are suitable.
  • digital printing techniques such as thermal transfer, inkjet or sublimation printing are suitable.
  • a color or ink used according to the invention for the production of the printing layer typically contains the customary further components of paints or inks, such as binders, penetrating agents, setting agents, biocides, surfactants, buffer substances, solvents (water and / or organic Solvents), fillers, pigments, dyes, effect pigments, antifoams,
  • a beam designates a beam of the relevant type of radiation that is normally focused for the type of radiation used.
  • the beam may have a diameter in the range of 0.0001 to 5 mm, preferably 0.001 to 1 mm, but also 0.01 to 1 mm on the substrate. It is understood that a beam in the relevant to the manufacturing variants by scanning or by means of an array of radiation sources. When producing by means of a mask, on the other hand, it is expedient to work with a defocused radiation, unless an array of radiation sources is also used here as the radiation source.
  • An array denotes an array of multiple discrete radiation sources as a row or grid.
  • a grid by separate control of the individual radiation sources, a two-dimensional pattern can be projected onto the printing layer while the printing layer is stationary.
  • a two-dimensional pattern can be projected onto the printing layer by separately controlling the radiation sources and by moving the line and the printing layer relative to each other in a direction that is not parallel, for example orthogonal, to the longitudinal extent of the line ,
  • a cover layer is transparent in the sense of the invention, if it is transparent to visible light or at least a portion of the visible wavelengths.
  • a transparent cover layer can also be transparent to radiation outside the visible light (IR, UV), but is preferably not transparent for this purpose.
  • transparent refers to a wavelength of more than 0.005, preferably more than 0.01, most preferably more than 0.1, with respect to the respective wavelengths.
  • non-transparent refers to wavelengths of visible light having a transmittance of less than 0.1, preferably less than 0.01.
  • a pattern designates an ensemble of pattern units on a value and / or security document, namely in their areal distribution on the surface of the document or the substrate.
  • Pattern units are surface areas that preferably contain substantially uniformly radiation-modified component or non-radiation-modified component.
  • instrumental measuring means includes any devices which are capable of visualizing either structural differences of the component to the human eye or sensor means, or sensor means sensitive to the structural differences.
  • a string is a spatial and / or temporal sequence of individual characters with a given reading direction, for example, alphanumeric characters but also symbols and / or images.
  • the term of spatial resolution denotes that information about the arrangement of a Pattern element on the document is obtained. This does not necessarily have to be done with a spatially resolving detection system. Rather, a document can also be carried out in a defined manner under a non-spatially resolving detection system, in which case a chronological sequence of the measured values can easily be converted into a location information due to the defined movement.
  • two-dimensionally spatially resolving detectors or punctiform or one-dimensional spatially resolving detectors can be used as detection systems, in which case a defined translation of the document relative to the detector has to take place (translation of the document relative to stationary detector, translation of the detector relative to stationary document , or translation of detector and document, with detector and document being translated against each other) analogous to the above-described generation of a one-dimensional pattern with a point radiation source or a two-dimensional pattern with a line of radiation sources. It is otherwise understood that the document for unambiguous association with a detector in a defined, always the same way is aligned, or is moved in a defined, always the same way with respect to the detector.
  • Figure 1 a plan view (a) of an inventive
  • Figure 2 an apparatus for producing a security document according to the invention in
  • FIG. 3 shows a view of the mask shown in the subject matter of FIG.
  • FIG. 1a a security document 1 according to the invention can be seen in a top view. Comparing with FIG. 1b, it can be seen that the security document 1 has a substrate 2, two print layers 3a, 3b and two cover layers 4a, 4b.
  • the printing layers 3a, 3b may consist of a plurality of sub-layers of printing not shown for clarity and stacked on top of each other. Between a printing layer 3a and a cover layer 4a, a photo 5 may be arranged.
  • a printed document number 6 is arranged. This document number 6 is visible to the human eye (but also machine-readable). Furthermore, it can be seen that the printing layer 3a and / or the substrate 2 has a plurality of first Partial regions 7a-d and a plurality of second partial regions 8a-d has. For the sake of clarity, the number of first partial regions 7a-d and second partial regions 8a-d is low in practice, in practice their number is high, so that a high data density of one of the first partial regions 7a-d and second partial regions 8a d formed bar codes 9 is obtained.
  • the first partial regions 7a-d contain a non-radiation-modified fluorescent dye that is imperceptible to the human eye, and the second partial regions 8a-d likewise contain the same fluorescent dye but have been radiation-modified.
  • the radiation modification comprises a reduction of the fluorescence intensity, based on the same
  • the first partial regions 7a-d fluoresce more intensely than the second partial regions 8a-d upon irradiation with a fluorescence-exciting light source.
  • a barcode 9 is set up as a pattern whose existence can not be recognized by the human eye, as indicated by the thin boundary lines of the first partial areas 7a-d and the second partial areas 8a-d.
  • an illumination of the first partial areas 7a-d and of the second partial areas 8a-d is used with a light source used as measuring means and exciting the fluorescence, then the barcode becomes visible and can be recognized and evaluated by means of a bar code reader.
  • the barcode codes for the document number 6 and by means of a comparison of the Document number 6 with the bar code or the character string encoded thereby, the security document 1 can be verified. In the case of a forgery, either the barcode does not exist (for lack of radiation modification) or does not agree with the
  • Document number match due to a mechanical transfer of parts of the print layer 3a or the substrate 2).
  • subregions 7a-d and 8a-d of the barcode 9 do not necessarily have to be over the entire surface.
  • they can also be structured, for example in the context of a guilloche.
  • FIG. 2 shows a side view of a device for producing a security document according to the invention.
  • a security document 1 with printing layer 3a, but still without cover layer 4a, is deposited on a support 10 and arranged and aligned in a defined manner, namely with print layer 3a facing upwards.
  • a mask 11 is arranged over the printing layer 3a.
  • a radiation source 14 is arranged, which illuminates the mask evenly and homogeneously with visible light of high energy dose.
  • the mask 11 has first mask regions 12a-d which do not transmit the light, while second mask regions 13a-d the
  • the resulting pattern encodes 9
  • the mask 11 is a transmissive LCD display whose pixels are controllable by means of a control device 15 with the proviso that the first mask areas 12a-d and the second mask areas 13a-d are formed
  • the first mask areas 12a-d and the second mask areas 13a-d are projected onto the print layer 3a and the substrate 2, respectively, whereby the first portions 7a-d and second
  • Subareas 8a-d are formed in the printing layer or the substrate 2 by way of radiation modification and form the barcode 9.
  • the security document 1 is released from the carrier 10 and provided with a cover layer 4a.
  • the next security document 1 is then placed on the carrier 10 and the process is repeated, although the mask 11 is reprogrammed with the proviso that the first mask areas 12a-d and the second mask areas 13a-d are now next for the document number 6 of the next Code security document 1.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Computer Security & Cryptography (AREA)
  • Manufacturing & Machinery (AREA)
  • Finance (AREA)
  • Accounting & Taxation (AREA)
  • Business, Economics & Management (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electromagnetism (AREA)
  • Theoretical Computer Science (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Radiation Pyrometers (AREA)

Abstract

L'invention concerne un document (1) de sécurité et/ou de valeur, avec un substrat (2) et avec une couche imprimée (3a, 3b) disposée sur le substrat (2). Elle est caractérisée en ce que des premières zones partielles (7a-d) du document (1) comportent un composant non modifié par rayonnement ou peu modifié par rayonnement, et en ce que des secondes zones partielles (8a-d) du document comportent un composant modifié par rayonnement ou fortement modifié par rayonnement. Le composant modifié par rayonnement se différencie du composant non modifié par rayonnement uniquement par différenciation structurelle induite par le rayonnement. Les premières zones partielles (7a-d) ne sont pas différenciables des secondes zones partielles (8a-d), et les premières zones partielles peuvent être différenciées des secondes zones partielles au moyen d'un appareil de mesure.
EP07801222.6A 2006-08-10 2007-08-06 Document de sécurité et/ou de valeur avec un motif de composants modifiés par rayonnement et procédé de fabrication Active EP2050046B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006038270A DE102006038270A1 (de) 2006-08-10 2006-08-10 Sicherheits- und/oder Wertdokument mit einem Muster aus strahlungsmodifizierten Komponenten
PCT/DE2007/001413 WO2008017300A2 (fr) 2006-08-10 2007-08-06 Document de sécurité et/ou de valeur avec un motif de composants modifiés par rayonnement

Publications (2)

Publication Number Publication Date
EP2050046A2 true EP2050046A2 (fr) 2009-04-22
EP2050046B1 EP2050046B1 (fr) 2020-07-22

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EP (1) EP2050046B1 (fr)
DE (1) DE102006038270A1 (fr)
WO (1) WO2008017300A2 (fr)

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AU2016201659B2 (en) * 2008-04-30 2016-08-11 Xyleco, Inc. Marking paper products
AU2015200267B2 (en) * 2008-04-30 2016-02-18 Xyleco, Inc. Marking paper products
CN106218261B (zh) 2009-10-14 2018-10-16 希乐克公司 标记纸产品
DE102010022701B4 (de) 2010-06-04 2012-02-02 Innovent E.V. Verfahren zur Kennzeichung eines Substrates
DE102011087637A1 (de) * 2011-12-02 2013-06-06 Bundesdruckerei Gmbh Identifikationsdokument mit einer maschinenlesbaren Zone und Dokumentenlesegerät
ITMI20122131A1 (it) 2012-12-13 2014-06-14 Bancor Srl Lettore ottico per documenti con zone stampate e/o forate
DE102013113938A1 (de) * 2013-12-12 2015-06-18 Schreiner Group Gmbh & Co. Kg Gegenstand mit mindestens einer ein Sicherheitsmerkmal aufweisenden Oberfläche
EP3083260A1 (fr) * 2013-12-17 2016-10-26 Merck Patent GmbH Procédé de réalisation d'un marquage
ES2633025T3 (es) 2014-05-23 2017-09-18 Merck Patent Gmbh Procedimiento para el tratamiento con láser de recubrimientos
BR112017000278A2 (pt) * 2014-07-08 2017-10-31 Xyleco Inc marcação de produtos à base de plástico
EP3175385A4 (fr) 2014-07-29 2018-01-03 Hewlett-Packard Development Company, L.P. Transmission d'un repère d'authentification
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DE102015110143B4 (de) * 2015-06-24 2023-07-27 Pictiva Displays International Limited Organisches lichtemittierendes Bauelement und Verfahren zur Herstellung eines organischen lichtemittierenden Bauelements
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Also Published As

Publication number Publication date
WO2008017300A3 (fr) 2008-09-18
WO2008017300A2 (fr) 2008-02-14
DE102006038270A1 (de) 2008-02-14
EP2050046B1 (fr) 2020-07-22

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