EP2644406A2 - Procédé de fabrication d'un support de données et support de données ainsi obtenu - Google Patents

Procédé de fabrication d'un support de données et support de données ainsi obtenu Download PDF

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Publication number
EP2644406A2
EP2644406A2 EP13001582.9A EP13001582A EP2644406A2 EP 2644406 A2 EP2644406 A2 EP 2644406A2 EP 13001582 A EP13001582 A EP 13001582A EP 2644406 A2 EP2644406 A2 EP 2644406A2
Authority
EP
European Patent Office
Prior art keywords
laser
data carrier
front side
sensitive
security element
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.)
Withdrawn
Application number
EP13001582.9A
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German (de)
English (en)
Other versions
EP2644406A3 (fr
Inventor
Georg Depta
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 and Devrient Currency Technology GmbH
Original Assignee
Giesecke and 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 and Devrient GmbH filed Critical Giesecke and Devrient GmbH
Publication of EP2644406A2 publication Critical patent/EP2644406A2/fr
Publication of EP2644406A3 publication Critical patent/EP2644406A3/fr
Withdrawn legal-status Critical Current

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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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • 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
    • 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
    • B42D25/355—Security threads
    • 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
    • B42D2033/10—
    • B42D2033/16—
    • B42D2033/20—
    • B42D2033/26—
    • B42D2035/08—

Definitions

  • the invention relates to a data carrier, in particular a value document, such as a banknote, with a possibly individualizing identifier obtained on the front by the action of laser radiation.
  • the invention further relates to a method for producing the data carrier.
  • Identity cards such as credit cards or identity cards
  • the optical properties of the card material in the form of a desired marking are irreversibly changed by suitable guidance of a laser beam.
  • an identity card with applied information is described, which has on a surface of different colored and stacked layer areas, which are at least partially interrupted by visually recognizable personalization data.
  • the object of the invention is to provide a data carrier of the type mentioned above, which has a laser-generated individual identification of high counterfeit security.
  • the marking should be easy to integrate into existing designs or print images.
  • the security element can also be in printed form.
  • the possibly individualizing markings produced on the front have visually discernible differences in brightness when viewed from the front in transmitted light, in particular in the overlapping area of the individualizing mark and generated on the front side the mark produced on the back has a higher brightness.
  • the laser-sensitive identification area arranged on the front side and the laser-sensitive identification area arranged in the security element are each formed by a laser-sensitive recording layer.
  • the laser-sensitive recording layer on the front side can also be formed by the substrate itself.
  • the laser parameters are changed during the application in step b), so that both the laser-sensitive recording layer of the laser-sensitive identification area arranged on the front side and the laser-sensitive recording layer of the laser-sensitive identification area arranged in the security element are differently influenced in each case will be maintained, in part in part, and partially removed.
  • the laser-sensitive recording layer of the laser-sensitive identification area arranged on the front side is provided in partial areas with different laser absorption, so that in step b) the marking produced by the substrate laser radiation penetrating the rear side of the data carrier has visually recognizable differences in the line width and / or the color or contrast intensity.
  • the strip-shaped or patch-shaped security element of the data carrier provided in step a), in particular the laser-sensitive recording layer of the security element, is provided in partial areas with different laser absorption such that the marking produced in step b) on the rear side of the data carrier by the laser radiation penetrating the substrate has visually recognizable differences in the line width and / or the color or contrast intensity.
  • the data carrier is preferably a value document or a security paper.
  • a second aspect of the invention relates to a data carrier obtainable by the method according to the first aspect of the invention.
  • the laser marking introduced in a security element on the rear side of a data carrier leads in the course of laser application the front of the disk is created, a see-through effect that helps to secure the disk against tampering.
  • the see-through effect is visible to the viewer without aids, such as a magnifying glass or the like, visually recognizable and beyond machine.
  • the individualizing mark is e.g. a serial number.
  • the serial number may be in the form of letters and / or numbers, and optionally with extensions such as e.g. an additional check digit or a symbol.
  • graphic codes such as barcodes or matrix codes, or identifiers in the form of images are also suitable as individualizing characteristics.
  • the data carrier substrate may in particular be formed from paper, a film, a plastic body such as polycarbonate or PVC, or from a paper-foil laminate.
  • paper-film laminates come eg plastic / paper / plastic composites (see, eg WO 2004/028825 A2 ) or paper / plastic / paper composites in question.
  • Suitable laser sources are CO 2 lasers, Nd: YAG lasers, Nd: YVO 4 lasers or other types of lasers in the wavelength range from UV to far-infrared, where the lasers often also advantageously work with frequency doubling or tripling.
  • Laser sources in the near infrared are used with particular advantage, since this wavelength range fits well with the absorption properties of the substrates and printing inks used for value documents. For example, it is easy to specify for this range printing inks which are transparent to the laser radiation but opaque and colored in the visible spectral range for the human observer.
  • a Nd: YVO 4 laser can expediently be used with a pulse frequency between 50 kHz and continuous wave, a power between 10 and 100 W, for example 50 W, and a marking speed between 1 and 30 m / s, preferably between 3 and 15 m / s, operate.
  • the working distance between the lens and the substrate may be slightly less than that required for optimum focusing to achieve easy defocusing of the laser spot.
  • a vector marking mode is suitably used.
  • the Nd: YVO 4 laser can be operated, for example, with a pulse frequency between 20 kHz and 80 kHz, a power between 0.5 and 4 W and for a dot resolution of the grid between 250 and 4800 dpi. Again, the laser spot can be easily defocused.
  • the laser parameters are changed during the laser application.
  • the front side of the data carrier can be provided with a single laser-sensitive recording layer having a first and a second marking area, wherein in the first labeling area with comparatively high laser energy an individualizing mark is introduced and in the second marking area with comparatively low laser energy a background is generated.
  • the laser radiation penetrating the data carrier substrate leads in the area of the security element to a removal of the laser-sensitive elements formed in the security element Recording layer (eg a metallization).
  • the laser-sensitive recording layer formed in the security element can be removed, in particular demetallized, by the variation of the laser parameters to varying degrees.
  • the marking produced in this way in the security element has, for example, a high line width in a first marking area and a small line width in a second marking area.
  • the laser parameters may be varied so that the laser-sensitive recording layer formed in the security element is (partially) removed in a first identification area and remains (completely) in a second identification area.
  • the materials to be provided with a marking according to the invention must contain substances which are laser-markable.
  • the substances contained ie pigments, dyes and the like
  • Layers applied to the data carrier should be in the form of a metallization or in the form of an absorbing printing layer.
  • Laser-markable paper should contain sufficient absorber, eg TiO 2 , soot or interference pigments.
  • the laser-sensitive identification area arranged on the front side of the data carrier substrate is advantageously formed by a laser-sensitive recording layer applied to the data carrier.
  • This recording layer may, for example, a printing layer, in particular a
  • the laser-sensitive recording layer comprises a metal layer or a printing ink which contains laser radiation-absorbing additives, such as graphite or carbon black.
  • the laser-sensitive recording layer may, in particular, be an optically variable layer which has optically variable pigments, interference-layer pigments or pigments prepared on the basis of liquid-crystalline polymers (see, for example, US Pat WO 97/19818 A1 ).
  • the color mixture preferably contains optically variable color pigments, wherein as the mixture component transparent to the laser radiation, in particular optically variable liquid crystal pigments or a transparent or translucent intaglio and for the absorbent mixture component
  • optically variable interference layer pigments come into question.
  • Other color components which can be irreversibly changed in their optical properties such as an intaglio printing ink, a metallic effect ink or metallic pigments, a luminescent color or luminescent pigments, luster pigments or a thermochromic color, are also suitable for the absorbing mixture component.
  • the recording layer arranged on the front side of the data carrier in the form of a color layer with magnetic pigments which are optionally magnetically aligned (see eg the WO 2011/107271 A1 ).
  • the magnetic pigments may be, for example, non-spherical, in particular platelet-shaped, formed (see, for example, the EP 1 251152 B1 ).
  • the magnetic pigments may be colored and / or optically variable, in particular as color-shifting thin-film elements having an interference layer structure (see, for example, US Pat EP 1 366 380 A2 ).
  • an identification region in the form of a laser-sensitive recording region may be formed in the substrate itself.
  • a laser-sensitive recording area can be formed by introducing absorbing substances into the substrate. Examples of suitable absorbing substances are TiO 2 , soot particles, interference pigments or infrared absorbers.
  • the laser-sensitive recording layer of the laser-sensitive identification region disposed on the front side is provided in partial regions having different laser absorption.
  • the intensity of the laser radiation penetrating the substrate can be set differently.
  • the marking produced in the back of the data carrier numerous design options result in this way.
  • the front side of the data carrier can be provided with two different, adjacent laser-sensitive recording layers, which have a different laser absorption and each form a first and a second identification area. Both marking areas are exposed to laser radiation in order to introduce the individualizing characteristic in both areas.
  • the laser radiation penetrating the data carrier substrate in the region of the security element leads to a removal of the laser-sensitive recording layer formed in the security element (eg a metallization). Due to the different laser absorption of the recording layers applied on the front side of the data carrier, the laser-sensitive recording layer formed in the security element is removed to a varying extent, in particular demetallised.
  • the marking produced in this way in the security element has, for example, a high line width in a first marking area and a small line width in a second marking area.
  • the recording layers on the front side of the data carrier can be varied such that the laser-sensitive recording layer formed in the security element is (partially) removed in a first identification area and remains (completely) in a second identification area.
  • the recording layers provided on the front side of the data carrier with different laser absorption are not two different recording layers but a recording layer which has a different layer thickness in different areas.
  • the strip-shaped or patch-shaped security element which can be used according to the invention can be, for example, a security thread.
  • the security element When viewing the data carrier, the security element can be visually completely or only partially visible from the rear side.
  • An example of an only regionally Visually identifiable security element is a window security thread, which emerges in window areas on the surface of a banknote, while it is embedded in the intervening web areas inside the banknote (see, for example, US Pat Fig. 1 of the WO 2004/097112 A1 ).
  • the security element expediently has a (film) substrate and a laser-sensitive recording layer, in particular a metallization such as silver.
  • the laser-sensitive recording layer of the security element may be multi-layered and may include, for example, a metallization (such as silver) and a magnetic layer (particularly comprising iron oxide). It is preferred that the magnetic layer is formed above the metallization, the term "above” being understood to mean that the magnetic layer faces the viewer of the data carrier from the rear side. It is particularly preferred for the laser-sensitive recording layer of the security element to be based on a layer structure comprising the following three layers: metallic layer-magnetic layer-metallic layer (in particular on the side which is visible to the viewer, this layer may in particular be colored).
  • the magnetic layer does not necessarily have to be present over the entire surface, but instead can be provided with recesses. This procedure is useful to affect the laser energy absorption capacity (see the third preferred embodiment mentioned in the summary).
  • the laser energy is completely absorbed, a demetallization does not take place.
  • the laser absorption leads to demetalization.
  • the security element may in particular comprise a holographic device.
  • security elements come into question which contain a microoptical representation arrangement with microstructures and microimage elements for enlarged imaging of the microstructures, for example microlens or hollow microarray arrays.
  • security elements with reflective sawtooth gratings such as those made of, for example, are suitable WO 2011/066991 A2 .
  • WO 2011/066990 A2 and WO 2012/000669 A1 are known.
  • security elements in particular security threads, with a so-called "Colorshift / Colorfix" structure are suitable.
  • Such security elements are from the WO 2006/040069 A1 The disclosure of which is incorporated herein by reference.
  • the security element in this case has an optically variable layer which imparts different color impressions at different viewing angles, wherein a semitransparent color layer is arranged in a covering area over the optically variable layer, and the color impression of the optically variable layer when viewed under predetermined viewing conditions to the color impression of semitransparent Color layer is adjusted in the coverage area.
  • the semitransparent ink layer can in particular in the form of characters, patterns or codes.
  • the semitransparent color layer may have recesses in the form of characters, patterns or codes.
  • the color impression of the optically variable layer outside the coverage area essentially corresponds to the color impression of the semitransparent ink layer in the coverage area.
  • the optically variable layer may, in particular, be formed from a plurality of partial layers, for example a reflection layer, an absorber layer and a dielectric spacer layer arranged between the reflection layer and the absorber layer.
  • the dielectric spacer layer may, for example, be partially absorbent.
  • the reflection layer may be formed by an opaque or a semi-transparent metal layer.
  • the reflection layer can be present at least in regions as a magnetic layer.
  • recesses can be produced by the method according to the invention in the reflection layer, which form transparent or semitransparent regions in the security element.
  • the optically variable layer may preferably contain one or more layers of liquid-crystalline material, in particular of cholesteric liquid-crystalline material.
  • the liquid-crystalline material may in particular be in the form of a liquid-crystalline polymer material or in the form of pigments embedded in a binder matrix.
  • the optically variable layer may be formed by a diffractive diffraction structure.
  • Fig. 1a and Fig. 1b shown first embodiment and the in Fig. 2 shown second embodiment belongs to the above-mentioned first preferred embodiment of the invention.
  • the laser is applied to the front of the data carrier with different laser parameters.
  • Fig. 1a 1 shows the front side of a banknote 1 with a laser-sensitive recording layer 2 arranged on the front side.
  • a security thread 5 (shown dotted in the figure) is embedded on one side, ie the thread 5 is in viewing of the front side of the banknote 1 not visible.
  • the banknote substrate is made of paper.
  • the laser-sensitive recording layer 2 (shown in the figure in the form of hatching) is based on a magnetic, thin layer which has magnetic pigments and gives the viewer the impression of a colored color (such layers are known, for example, from US Pat WO 02/073250 A2 and the WO 2011/107271 A1 known).
  • an individualizing marking 3 namely the serial number "123456" was generated by applying laser radiation from the front in a first kerf marking area with the parameter set (b) given below.
  • the label 3 is in the form of removal of the magnetic pigment from the color mixture and was obtained with high laser intensity.
  • the marking area 4 the recording layer 2 was treated with laser radiation from the front side with the parameter set (a) given below. The lower laser intensity leads to a silver marking in the marking area 4.
  • Fig. 1b shows the back of the banknote 1.
  • the security thread 5 embedded in the paper on one side in the example a metallized foil strip, is completely recognizable when viewing the back of the banknote 1.
  • the metallization of the thread 5 has a matting, which is caused by the laser radiation penetrating the substrate with parameter set (a).
  • the laser radiation leads in the region 6 of the thread 5 to a slight demetallization.
  • the laser radiation penetrating the substrate with parameter set (b) led to a complete demetallization.
  • the area 7 represents a mark which forms a congruent section of the mark applied on the front side (in the present example, the right half of the figure "5").
  • FIG. 2 shown second embodiment is a variant of the in the Fig. 1a and Fig. 1b described first embodiment.
  • Fig. 2 shows the front of a banknote 8, with the above in connection with the Fig. 1a banknote 1 is identical.
  • the marking "12345" was generated in the laser-sensitive recording layer 2 with laser radiation with parameter set (b).
  • the exposure to laser radiation with parameter set (a) in the present case was carried out in dashed area 9, ie Both the magnetic pigments, laser-sensitive recording layer 2, and the paper substrate was applied in the areas 10 with laser. In areas 10, laser exposure led to blackening of the paper substrate.
  • the laser-sensitive recording layer 2 in the Fig. 1a and Fig. 2
  • printed layers with optically variable ink can be used.
  • the laser-sensitive recording layer 2 may be an optically variable layer which has pigments prepared on the basis of liquid-crystalline polymers (see, for example, US Pat WO 97/19818 A1 ).
  • Fig. 3a and Fig. 3b shown third embodiment belongs to the aforementioned second preferred embodiment of the invention.
  • the laser is applied to the front of the data carrier without varying the laser parameters.
  • the laser-sensitive recording layer on the front side of the banknote has two different recording layers with different laser absorption, so that the marking is produced in the thread on the back side of the banknote with different stroke width.
  • Fig. 3a shows the front side of a banknote 11 with a front mounted on the laser-sensitive recording layer 12 (shown hatched in the figure).
  • a security thread 13 (shown dotted in the figure) is embedded on one side, ie the thread 13 can not be seen when viewing the front side of the banknote 11.
  • the banknote substrate is made of paper.
  • the laser-sensitive recording layer 12 contains an optically variable layer which has pigments prepared on the basis of liquid-crystalline polymers (see, for example, US Pat WO 97/19818 A1 ).
  • the individualizing mark "123456" generated by the action of laser radiation when applied from the front extends over the area of banknote 11 printed with laser-sensitive recording layer 12 and over the unprinted area of banknote 11. In the unprinted area, the laser radiation produces a blackening in the paper.
  • Fig. 3b shows the back side of the banknote 11.
  • the security thread 13 embedded in the paper on one side, in the example a metallized film strip, is completely recognizable when viewing the back side of the banknote 11.
  • the thread 13 has a weak demetallization, ie a marking in the form of a small line width.
  • the laser radiation applied to the front surface was largely absorbed by the liquid crystal-based laser-sensitive recording layer 12, so that the metallization of the filament 13 at this point was only partially removed.
  • the thread 13 has been demetallized relatively strongly, ie the marking has a high line width.
  • the laser radiation applied to the front side was absorbed only by the paper substrate to a limited extent, so that the metallization of the filament 13 was almost completely removed at this point.

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Laser Beam Processing (AREA)
EP13001582.9A 2012-03-30 2013-03-27 Procédé de fabrication d'un support de données et support de données ainsi obtenu Withdrawn EP2644406A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012006623A DE102012006623A1 (de) 2012-03-30 2012-03-30 Verfahren zum Herstellen eines Datenträgers und daraus erhältlicher Datenträger

Publications (2)

Publication Number Publication Date
EP2644406A2 true EP2644406A2 (fr) 2013-10-02
EP2644406A3 EP2644406A3 (fr) 2017-11-08

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EP13001582.9A Withdrawn EP2644406A3 (fr) 2012-03-30 2013-03-27 Procédé de fabrication d'un support de données et support de données ainsi obtenu

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EP (1) EP2644406A3 (fr)
DE (1) DE102012006623A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886362A1 (fr) * 2013-12-19 2015-06-24 Giesecke & Devrient GmbH Document de valeur
CN107434113A (zh) * 2017-01-04 2017-12-05 信码互通（北京）科技有限公司 具有灰度标识的烟盒及制造方法

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WO2012000669A1 (fr) 2010-07-01 2012-01-05 Giesecke & Devrient Gmbh Élément de sécurité et document de valeur comportant un élément de sécurité

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DE102004061635A1 (de) * 2004-12-17 2006-07-06 Giesecke & Devrient Gmbh Kartenförmiger Datenträger
DE102009048145A1 (de) * 2009-10-02 2011-04-07 Giesecke & Devrient Gmbh Datenträger mit Fenster

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Publication number Priority date Publication date Assignee Title
DE3048733A1 (de) 1980-12-23 1982-07-08 GAO Gesellschaft für Automation und Organisation mbH, 8000 München "ausweiskarte und verfahren zur herstellung derselben"
WO1997019818A1 (fr) 1995-11-27 1997-06-05 Giesecke & Devrient Gmbh Support de donnees a couleur optiquement variable
WO2002073250A2 (fr) 2001-03-09 2002-09-19 Sicpa Holding S.A. Pigment ou dispositif d'interference en film mince magnetique et son procede de fabrication, encre d'impression ou composition de revetement, document de securite et utilisation d'un tel dispositif
EP1366380A2 (fr) 2001-03-09 2003-12-03 Sicpa Holding S.A. Pigment ou dispositif d'interference en film mince magnetique et son procede de fabrication, encre d'impression ou composition de revetement, document de securite et utilisation d'un tel dispositif
EP1251152B1 (fr) 2001-03-23 2005-09-28 Eckart GmbH & Co. KG Pigments métalliques à effet
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WO2004097112A1 (fr) 2003-04-28 2004-11-11 Giesecke & Devrient Gmbh Element de securite plan et son procede de fabrication
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WO2011066991A2 (fr) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Élément de sécurité, document de valeur présentant un tel élément de sécurité, et procédé de production d'un élément de sécurité
WO2011066990A2 (fr) 2009-12-04 2011-06-09 Giesecke & Devrient Gmbh Élément de sécurité, document de valeur présentant un tel élément de sécurité, et procédé de production d'un élément de sécurité
WO2011107271A1 (fr) 2010-03-03 2011-09-09 Giesecke & Devrient Gmbh Élément de sécurité avec pigments magnétiques alignés
WO2012000669A1 (fr) 2010-07-01 2012-01-05 Giesecke & Devrient Gmbh Élément de sécurité et document de valeur comportant un élément de sécurité

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2886362A1 (fr) * 2013-12-19 2015-06-24 Giesecke & Devrient GmbH Document de valeur
CN107434113A (zh) * 2017-01-04 2017-12-05 信码互通（北京）科技有限公司 具有灰度标识的烟盒及制造方法

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