WO2012175191A2 - Élément de sécurité et procédé de fabrication et utilisation dudit élément de sécurité - Google Patents

Élément de sécurité et procédé de fabrication et utilisation dudit élément de sécurité Download PDF

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Publication number
WO2012175191A2
WO2012175191A2 PCT/EP2012/002582 EP2012002582W WO2012175191A2 WO 2012175191 A2 WO2012175191 A2 WO 2012175191A2 EP 2012002582 W EP2012002582 W EP 2012002582W WO 2012175191 A2 WO2012175191 A2 WO 2012175191A2
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WO
WIPO (PCT)
Prior art keywords
layer
pigments
security element
absorption
infrared
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.)
Ceased
Application number
PCT/EP2012/002582
Other languages
German (de)
English (en)
Other versions
WO2012175191A3 (fr
Inventor
Jürgen ZERBES
Georg Depta
Christoph Mengel
Harald Reiner
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.)
Giesecke+Devrient GmbH
Original Assignee
Giesecke+Devrient 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 Giesecke+Devrient GmbH filed Critical Giesecke+Devrient GmbH
Priority to EP12730800.5A priority Critical patent/EP2723578B1/fr
Publication of WO2012175191A2 publication Critical patent/WO2012175191A2/fr
Publication of WO2012175191A3 publication Critical patent/WO2012175191A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—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
    • 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
    • B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • 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
    • 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
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles
    • B42D2033/20—
    • B42D2035/24—

Definitions

  • the invention relates to a security element for securing valuables with a covering ink layer and an introduced into the ink layer by the action of laser radiation marking in the form of patterns, characters or a coding.
  • Data carriers such as valuables or identity documents, but also other valuables, such as branded goods, are often provided with security elements for the purpose of security, which permit verification of the authenticity of the data carrier and at the same time serve as protection against unauthorized reproduction.
  • the security elements are provided, for example, with identifications produced by the action of laser radiation, which are known as laser inscription in personalized cards, for example. Even with banknotes or other value documents a visually recognizable individualization by laser exposure is known.
  • either the visible marking or the machine-readable marking usually stands in the foreground, while the respective other aspect is perceived as disturbing.
  • the machines- therefore, readable markers are often optically masked or hidden, while the visually detectable markers typically do not have machine-readable properties sufficient for secure capture.
  • the present invention seeks to provide a security element of the type mentioned above, on the one hand offers an attractive visual appearance and its identification on the other hand not only visually, but also mechanically detected safely.
  • a first aspect of the invention relates to a method for producing a security element for securing valuables with a covering ink layer, which comprises a marking region introduced in the form of patterns, characters or an encoding by the action of laser radiation, both visually and mechanically detectable
  • a background region comprising the step of applying a covering, multi-layered pigments containing color layer on a substrate, and the step of introducing a label in the form of
  • Patterns, characters or a coding in the color layer by the action of laser radiation wherein the nature of the multilayer pigments and the intensity of the laser radiation are chosen so that the marking in the visible spectral range brighter than the background area and thereby becomes visually detectable, and in the infrared spectral region receives a greater absorption than the background area and is thereby mechanically detectable.
  • the multilayer pigments preferably have a uniform color substantially independent of the viewing angle.
  • the multilayered pigments include, for example, a support and a support-coated layer containing a first component having a first infrared absorption and a second laser-ablatable component having a second infrared absorption, wherein the first infrared absorption is greater than the second infrared absorption is.
  • the first infrared absorption is preferably more than 1.25 times, more preferably more than 2 times, and most preferably more than 5 times the size of the second infrared absorption.
  • the multilayer pigments are advantageously magnetic pigments which have a support and a layer applied to the support, the support comprising Al 2 O 3, Al 2 O 3 with up to 5% by weight of TIO 2, SIO 2, SIO 2 with up to 20% by weight of silicon hydroxide, Glass or borosilicate is selected and the layer iron oxide, in particular gamma-iron oxide, which is doped with at least one alkaline earth metal oxide, preferably MgO, contains.
  • the magnetic pigments are magnetically aligned after the step of applying the color layer to the substrate in the form of a motif, in particular in the form of patterns, characters or a coding.
  • the ink layer may preferably contain 75% to 100% of a multilayer pigment having a uniform color substantially independent of the viewing angle, and 25% to 0% of optically variable pigments besides a binder.
  • the laser application is preferably carried out with a pulsed infrared laser in the wavelength range of 0.8 ⁇ to 3 ⁇ , more preferably with short pulse durations of 25 ns or less, more preferably from 8 to 18 ns.
  • a second aspect of the invention relates to a security element for securing valuables with a covering ink layer, which has a by laser exposure introduced, both visually and machine detectable marking area in the form of patterns, characters or a coding, and a background area, wherein the security element obtainable by the method according to the first aspect of the invention.
  • a third aspect of the invention relates to a use of the security element according to the second aspect of the invention for the authenticity verification of valuables by detecting the infrared absorption of the security element in the area of the marking.
  • a fourth aspect of the invention relates to a method for the authenticity verification of valuables equipped with the security element according to the second aspect of the invention, the method comprising a step of detecting the infrared absorption of the security element in the region of the marking.
  • a generic security element has a covering ink layer and an introduced into the ink layer by the action of laser radiation marking in the form of patterns, characters or a coding that is both visually and mechanically detectable.
  • the color layer in the background area located outside the marking contains multilayer pigments which, for example, may have a uniform color which is essentially independent of the viewing angle.
  • the multilayer pigments may include, for example, an inner layer having a first infrared absorption and at least one outer layer covering the outer layer having a second infrared absorption, wherein the first infrared absorption is greater than the second infrared absorption.
  • the outer layer of the multilayer pigments is at least partially ablated or removed.
  • the marking is brighter in the visible spectral range than the background range and thereby visually detectable, while the marking in the infrared spectral range has a greater absorption than the background area and is thus mechanically detectable.
  • the multilayer pigments described in the preceding paragraph can, for example, comprise a support, in particular a support of glimmer, Al 2 O 3, borosilicate or silicon dioxide, on which the at least one inner layer and the at least one outer layer are applied.
  • the support itself may also constitute the inner layer of high infrared absorption and be surrounded by an outer layer of lower infrared absorption.
  • the inner layer does not necessarily have to represent a complete envelope for the wearer.
  • the multilayer pigments can also be formed, for example, by a carrier which is coated in each case with the inner layer on its opposite major surfaces, without the inner layers being connected to one another at the edge of the carrier.
  • the inner layers of the opposed major surfaces may each be coated with the outer layer without interconnecting the opposing outer layers at the edge of the pigment.
  • the inner layer may, for example be magnetic and Fe3O 4, gamma-iron oxide or maghemite, with alkaline earth oxide, in particular MgO, doped gamma iron oxide, Co-containing gamma-iron oxide, Co-containing Fe 3 Ü4 or based on CRCH.
  • the carrier of the pigments themselves constitutes the inner layer of high infrared absorption, the carrier itself may be magnetic and be formed, for example, on Fe 2 O 3 -based.
  • the outer layer of the multi-layered pigment consists for example of MgO or T1O2, whereby in principle also other materials with high infrared remission come into question, as they are used, for example, for solar heat reflection.
  • the inner layer can advantageously also be formed on the basis of antimony-doped tin oxide.
  • T1O2 / carbon black mixtures or carbon black inclusion layers with high infrared absorption are also suitable for the inner layer.
  • the multilayer pigments used according to the invention may alternatively have a carrier with a coating applied above the carrier, wherein the coating has a first constituent with a first infrared absorption and a second component having second infrared absorption ablatable by the action of laser radiation, and the first infrared absorption is greater than the second infrared absorption.
  • the first constituent may, for example, be in the form of a matrix in which the second constituent is embedded, or vice versa.
  • first infrared absorption is suitably more than 1.25 times, preferably more than 2 times, more preferably more than 5 times, and particularly preferably more than 8 times the size of the above-mentioned “second infrared absorption”.
  • infrared absorption refers expediently to a wavelength range of 800 to 1400 nm, preferably 800 to 1200 nm and particularly preferably 800 to 1050 nm.
  • the multilayer pigments disclosed are the magnetic pigments disclosed in WO 2010/149266 A1
  • the magnetic pigments have, in particular, a support and a layer applied to the support, the support comprising Al 2 O 3, Al 2 O 3 with up to 5% by weight of TIO 2 , SIO 2 , SIO 2 with up to 20% by weight of silicon hydroxide, glass or Borosilicate is selected and the layer gamma-iron oxide, which is doped with at least one alkaline earth metal oxide, preferably MgO, contains .
  • the proportion of alkaline earth metal is for example 0.01 to 2 wt .-%, in particular 0.1 to 1 wt .-%
  • the layer applied on the support can exclusively be composed of the gamma-iron oxide doped with alkaline earth metal oxide, in particular MgO xid exist.
  • the gamma iron oxide may also contain other iron compounds, for example Fe 3 O 4 or alpha iron oxide.
  • the last two compounds are in the gamma-iron oxide layer, individually or in combination, preferably in a proportion of at most 25 wt .-% based on the gamma-iron oxide.
  • a dielectric layer may be arranged above the gamma-iron oxide-deposited layer on the carrier.
  • the dielectric layer may for example be based on metal oxides or metal oxide hydrates or mixtures thereof, in particular oxides or hydrates of Ti, Zr, Zn, Sn, Ce, Si and Al, such as titanium dioxide, zirconium oxide, zinc oxide, tin oxide, cerium oxide, silicon dioxide or hydrates thereof ,
  • the magnetic pigments described above may advantageously be aligned magnetically in the form of a motif, in particular in the form of patterns, characters or an encoding.
  • a motif resulting from a magnetic alignment may be independent of the laser-generated marking or interact with it.
  • the marking may form a static reference point for a dynamic motion effect of the magnetic motif.
  • multilayer magnetic pigments can also be used without magnetic alignment of the pigments.
  • the multilayer pigments used according to the invention are preferably not optically variable, i. they preferably show a uniform color substantially independent of the viewing angle.
  • the pigments can show shiny metallic colors, in particular gold, copper or bronze shades.
  • Such pigments are e.g. in the WO
  • the color layer in addition to the multilayer pigments and a binder, contains not too large a proportion of optically variable pigments.
  • the color layer preferably contains 75% to 100% of the written, non-optically variable, multi-layered pigments and from 25% to 0% optically variable pigments.
  • the laser application is advantageously carried out with a pulsed infrared laser in the wavelength range of 0.8 ⁇ to 3 ⁇ , preferably with short pulse durations of 25 ns or less, in particular from 8 to 18 ns.
  • FIG. 1 is a schematic representation of a banknote with a security element according to the invention
  • FIG. 2 shows the appearance of the security element of FIG. 1, in a) in the visible spectral range (VIS) and in b) in the infrared spectral range (IR), FIG.
  • FIG. 3 shows in the left half of the image the absorption of a relatively strongly absorbing color layer in the visible spectral range (VIS) and in the infrared spectral range (IR), in the right half the absorption of the color layer in the two spectral ranges after laser application, in the left half of the image the absorption of a weakly to moderately absorbing color layer in the visible spectral range (VIS) and in the infrared spectral range (IR), in the right half the absorption of the color layer in the two spectral ranges after laser exposure, in the left half of the absorption of a color layer according to the invention in the visible spectral range (VIS) and in the infrared spectral range (IR), in the right half the absorption of the dye layer in the two spectral ranges after laser exposure, a multilayer pigment of a security element according to the invention, schematically the dependence of the absorption A on the exposure intensity I in the visible spectral range and in the infrared spectral range in the laser application
  • FIG. 1 shows a schematic illustration of a banknote. te 10 with a printed directly on the banknote paper security element 12th
  • the design and visual impression of the security element 12 for a viewer 20 are shown in greater detail in FIG. 2 (a).
  • the security element 12 contains a covering ink layer 14, which in the exemplary embodiment has a uniform, glittering and gold-colored appearance in a background region 16.
  • a label 18 is introduced by the action of laser radiation, which may be formed, for example in the form of the denomination "10" of the bill.
  • the mark 18 appears brighter than the golden background 16 and is therefore visually easily recognizable to the viewer 20.
  • the peculiarity of the security element 12 is particularly evident in the infrared spectral range. As illustrated in Fig.
  • the marker 18 in the infrared spectral region has a significantly higher absorption than the background region 16 and is thereby readily and reliably detectable by machine, for example with an infrared sensor 22 sensitive at a wavelength of 850 nm.
  • the color layer is locally destroyed or desorbed by the laser radiation so that the substrate or an underlying printing layer becomes visible.
  • the absorption by the color layer generally decreases in the irradiated region both in the visible spectral range 34 and in the infrared spectral range 36, and a bright identification with reduced IR absorption results, as shown schematically in the right-hand half of FIG. The size of the absorption before the laser application is shown with dashed lines for easier orientation.
  • Some colors also show a virtually unchanged absorption in the visible spectral range and a reduced absorption only in the infrared spectral range. Such colors are described, for example, in the document WO 2007/110155 A1 in connection with FIG. They are well suited for generating machine-readable encodings whose existence is hidden in the visible spectral range.
  • the opposite effect typically occurs with color layers which absorb weakly to moderately in the visible and infrared spectral regions.
  • the absorption 40 of such a color layer in the visible spectral range (VIS) and its absorption 42 in the infrared spectral range (IR) are shown schematically. If such a little absorbing ink layer is irradiated with pulsed laser radiation of sufficient intensity, the ink layer is irradiated by the laser beam. locally decomposed and carbonized, so that there is a local blackening with significantly increased absorption.
  • the change in absorbance in the visible spectral region 44 and in the infrared spectral region 46 is generally the same and a visually black marking with high IR absorption results, as shown in the right half of FIG. 4 schematically illustrated.
  • a color layer 14 according to the invention is irradiated with pulsed laser radiation of suitable intensity, the result is a local lightening, ie a lower absorption 54 in the visible spectral range, while at the same time a high absorption 56 is produced in the infrared spectral range, as in the right-hand half of FIG. 5 shown.
  • the visually visible, bright mark 18 is set in this way a machine-readable mark with very clear and thus easily detectable infrared contrast. In this way, a multi-level authenticity feature is created, on the one hand due to its light color and the partial preservation of the starting color of the ink layer 14 a Visually attractive appearance and on the other hand, both for the layman easy to identify, as well as mechanically proven to prove.
  • the ink layer 14 contains multi-layered pigments 60 having a uniform color independent of the viewing angle.
  • the pigments 60 are gold-colored and include a carrier 62, for example of Al 2 O 3, which is coated with an inner layer 64, for example of gamma-iron oxide, and an outer layer 66, for example of MgO.
  • the inner layer 64 has a higher, for example by a factor of 4, higher infrared absorption than the outer layer 66.
  • the effect used for the invention may be due to the laser radiation partially or even completely ablating or removing the outer MgO layer 66.
  • the highly IR-absorbing inner layer 64 is exposed, which on the one hand increases the infrared absorption of the pigment 60 overall and, on the other hand, attenuates, for example, a gold luster-producing interference effects, which leads to brightening in the visible spectral range.
  • the inner layer 64 is destroyed in addition to the outer layer 66 and there is a reduced absorption both in the visible and in the infrared spectral range, as already described above in connection with FIG.
  • the inner and outer layers 64, 66 need not extend beyond the edge 68 of the pigment, the inner ones and outer layers may instead be deposited separately on the opposite major surfaces of the core 62.
  • the dependence of the absorption A on the exposure intensity I in the visible spectral range and in the infrared spectral range is shown schematically in FIG. While the absorption 70 in the visible spectral range decreases with increasing exposure intensity, the absorption 72 in the infrared spectral range according to the model described above initially increases due to the exposure of the inner layer 64, and then decreases with increasing destruction of the gamma-iron oxide layer until at an exposure intensity 74 reaches a reduced absorption in both spectral regions and thus a situation as shown in FIG. 3 is generated.
  • the intensity range preferred according to the invention in which simultaneously a reduced absorption in the visible spectral range and an increased absorption in the infrared spectral range are obtainable, is indicated in the figure by the reference numeral 76.
  • the absolute values of the preferred intensity range depend of course on the one hand on the pigment 60 used and on the other hand on the further laser parameters, in particular of the laser wavelength, the pulse duration, the repetition frequency and the speed at which the laser beam is passed over the color layer in the labeling. Suitable absolute values for the intensity to be used according to the invention can, however, be determined experimentally by the person skilled in the art for a specific parameter set and a specific pigment 60 in the known basic course of FIG. 7 by a few experiments.
  • the pulse durations are preferably below 25 ns, in particular in the range from 8 to 18 ns.
  • the multilayer pigments used according to the invention may in particular be magnetic pigments which, in addition to the described effect, may be aligned by an external magnetic field in the form of a desired motif.
  • the magnetic pigments are admixed, for example, with a UV-curing lacquer which is screen-printed with the contained magnetic pigments onto the target substrate. Then, the target substrate with the still-movable magnetic pigments is placed in a magnetic field of a desired field distribution and the pigments thereby aligned.
  • the aligned magnetic pigments are now permanently fixed in their orientation by curing the UV varnish.
  • FIG. 8 shows by way of illustration a two-layered pig ment 80 with a core 82 of gamma-Fe203 and a shell 84 of T1O2.
  • the core 82 in this case represents an inner layer which has a significantly higher, for example by a factor of 3, infrared absorption than the outer T1O2 shell 84.
  • the laser radiation in the intensity region 76 partially or even completely destroys the outer TiOY shell 84 and exposes the strongly IR-absorbing inner gamma-Fe 2+ 3 core 82. This increases the infrared absorption of the pigment 80, while at the same time attenuating the coloring interference effects and lightening the color impression in the visible spectral range.
  • the multilayer pigments disclosed in WO 2010/149266 A1 are also suitable. These include, for example, an AkCb support and a MgO-doped layer of gamma-iron oxide applied above the support.
  • FIG. 9 shows the measured VIS / IR remissions of three inventive laser-treated security elements.
  • security elements in each case so-called magnetic gold pigments ("magnetic gold", also referred to as "M-gold” in FIG. 9) with an AhCv support and an MgO-doped layer of gamma-iron oxide applied above the support. The proportion of alkaline earth metal is about 1 wt .-% based on the pigment.
  • the three security elements were each treated with a different laser energy.
  • the VIS / IR remissions of the three laser radiation-treated security elements shown in FIG.

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  • Electromagnetism (AREA)
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Abstract

L'invention concerne un procédé de fabrication d'un élément de sécurité (12) servant à protéger des objets de valeur au moyen d'une couche de revêtement de couleur (14) qui comporte une zone de marquage (18) apposée par l'action d'un rayonnement laser et pouvant être détectée à la fois par le regard (20) et par une machine (22) sous la forme de motifs, de signes ou d'un codage, et une zone de fond (16). Ledit procédé selon l'invention comprend les étapes qui consistent à appliquer sur un substrat une couche de revêtement de couleur (14) contenant des pigments multicouches (60), et à apposer un marquage (18) sous la forme de motifs, de signes ou d'un codage dans la couche de couleur (14) par l'action d'un rayonnement laser, la qualité des pigments multicouches (60) et l'intensité du rayonnement laser étant sélectionnées de telle manière que le marquage (18) est plus clair que la zone de fond (16) dans le domaine spectral du visible et peut de ce fait être détecté par le regard (20), et présente dans le domaine spectral de l'infrarouge une absorption supérieure à celle de la couche de fond (16) et peut de ce fait être détecté par une machine (22).
PCT/EP2012/002582 2011-06-22 2012-06-19 Élément de sécurité et procédé de fabrication et utilisation dudit élément de sécurité Ceased WO2012175191A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12730800.5A EP2723578B1 (fr) 2011-06-22 2012-06-19 Élément de sécurité, son procédé de fabrication et l' utilisation d'un tel élément de sécurité

Applications Claiming Priority (2)

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DE102011105399A DE102011105399A1 (de) 2011-06-22 2011-06-22 Sicherheitselement und Verfahren zum Herstellen desselben sowie Verwendung des Sicherheitselements
DE102011105399.2 2011-06-22

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WO2012175191A2 true WO2012175191A2 (fr) 2012-12-27
WO2012175191A3 WO2012175191A3 (fr) 2013-11-07

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DE (1) DE102011105399A1 (fr)
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CN107093259A (zh) * 2017-03-09 2017-08-25 深圳怡化电脑股份有限公司 一种纸币真伪的识别方法及其装置
CN107798770A (zh) * 2017-10-17 2018-03-13 深圳怡化电脑股份有限公司 图像传感器的参数调整方法、装置、atm及存储介质
US20200180347A1 (en) * 2017-04-26 2020-06-11 Muehlbauer GmbH & Co. KG Security inlay for an identity document and method for producing a security inlay for an identity document
US20220305837A1 (en) * 2019-06-13 2022-09-29 Giesecke+Devrient Currency Technology Gmbh Security element with printing inks that vary upon illumination with electromagnetic radiation in the infrared wavelength range

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WO2010149266A1 (fr) 2009-06-26 2010-12-29 Merck Patent Gmbh Pigments magnétiques constitués d'un substrat lamellaire et d'une couche de maghémite

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DE102004057918A1 (de) * 2004-11-30 2006-06-01 Merck Patent Gmbh Laserkennzeichnung von Wertdokumenten
DE102008033693A1 (de) * 2008-07-17 2010-01-21 Giesecke & Devrient Gmbh Datenträger mit einem gedruckten magnetischen Sicherheitsmerkmal

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WO2007110155A1 (fr) 2006-03-27 2007-10-04 Giesecke & Devrient Gmbh Support de donnees et son procede de fabrication
WO2010149266A1 (fr) 2009-06-26 2010-12-29 Merck Patent Gmbh Pigments magnétiques constitués d'un substrat lamellaire et d'une couche de maghémite

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107093259A (zh) * 2017-03-09 2017-08-25 深圳怡化电脑股份有限公司 一种纸币真伪的识别方法及其装置
US20200180347A1 (en) * 2017-04-26 2020-06-11 Muehlbauer GmbH & Co. KG Security inlay for an identity document and method for producing a security inlay for an identity document
US11124009B2 (en) * 2017-04-26 2021-09-21 Muehlbauer GmbH & Co. KG Security inlay for an identity document and method for producing a security inlay for an identity document
CN107798770A (zh) * 2017-10-17 2018-03-13 深圳怡化电脑股份有限公司 图像传感器的参数调整方法、装置、atm及存储介质
CN107798770B (zh) * 2017-10-17 2019-12-06 深圳怡化电脑股份有限公司 图像传感器的参数调整方法、装置、atm及存储介质
US20220305837A1 (en) * 2019-06-13 2022-09-29 Giesecke+Devrient Currency Technology Gmbh Security element with printing inks that vary upon illumination with electromagnetic radiation in the infrared wavelength range

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EP2723578B1 (fr) 2016-04-06
DE102011105399A1 (de) 2012-12-27
PL2723578T3 (pl) 2016-10-31
WO2012175191A3 (fr) 2013-11-07
EP2723578A2 (fr) 2014-04-30

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