EP3529416B1 - Sicherheitssubstrat - Google Patents

Sicherheitssubstrat Download PDF

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Publication number
EP3529416B1
EP3529416B1 EP17791021.3A EP17791021A EP3529416B1 EP 3529416 B1 EP3529416 B1 EP 3529416B1 EP 17791021 A EP17791021 A EP 17791021A EP 3529416 B1 EP3529416 B1 EP 3529416B1
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EP
European Patent Office
Prior art keywords
metal oxide
substrate according
substrate
doped
post
Prior art date
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Active
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EP17791021.3A
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English (en)
French (fr)
Other versions
EP3529416A1 (de
Inventor
Pierre Sarrazin
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.)
Oberthur Fiduciaire SAS
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Oberthur Fiduciaire SAS
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Publication of EP3529416A1 publication Critical patent/EP3529416A1/de
Application granted granted Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic materials
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/44—Latent security elements, i.e. detectable or becoming apparent only by use of special verification or tampering devices or methods
    • D21H21/48—Elements suited for physical verification, e.g. by irradiation

Definitions

  • the present invention relates to security substrates and their manufacturing methods.
  • a security substrate is a substrate used in the manufacture of secure documents, protected against counterfeiting by means that make it difficult for them to be reproduced or falsified by counterfeiters.
  • the invention applies to paper substrates, for example intended for the manufacture of banknotes, as well as to plastic substrates, used in particular in the manufacture of banknotes, of security elements such as security threads, films or foils.
  • the invention is more particularly interested in giving the substrate a specific signature in the infrared (IR), this signature making it possible to authenticate, or even identify, the substrate by comparison with a reference signature.
  • IR infrared
  • Requirement JP 2010084079 also discloses an IR-absorbent ink based on tin oxide doped with antimony and / or indium oxide doped with tin.
  • tin oxide doped with antimony and / or indium oxide doped with tin The use of these substantially colorless materials allows better compatibility with the colored pigments used elsewhere to give the ink the desired color.
  • the detection can be carried out by reflection.
  • Requirement KR10-1131145 discloses a security paper comprising an IR absorbent substance. This application aims to overcome the coloring problems encountered during the use of certain known substances which absorb in the IR, and proposes materials of white or opaline color based on alkali, alkaline earth or transition metals.
  • WO 2012/103578 discloses a security material comprising a transparent polymeric carrier medium having IR absorbing nanoparticles dispersed in the medium.
  • WO 2007/132214 discloses a composition comprising an ink and an IR absorbent material.
  • WO 00/32700 discloses a papermaking filler or coating derived from a hydrated clay having a metal oxide and / or a precursor of a metal oxide of a poor metal aggregated with the clay.
  • the invention aims to further improve the security of the substrates in order in particular to confer a signature, preferably unitary, in the IR detectable by machine in transmission, while preserving the optical properties of whiteness and opacity of the substrate when the latter is a paper maker, and intended for example for the manufacture of banknotes.
  • unitary signature should be understood to mean a signature associated in a one-to-one manner with a given substrate; for example the substrate used for the manufacture of all the banknotes corresponding to the same denomination has the same signature. In another example, all the banknotes issued by the same central bank have the same signature, regardless of the value of the denominations.
  • the invention achieves this objective by virtue of a paper security substrate according to claim 1.
  • the poor metal can be in the ionic (salt), molecular (oxide, in particular SnO 2 ) doped or not, or atomic (dopant, in particular Al or Ga) form.
  • the term “poor metal” denotes a metal chosen from the group consisting of aluminum, bismuth, tin, gallium, indium, lead, polonium and thallium, the latter two metals however not being. favorite.
  • Said oxide or metal oxide salt is preferably respectively an oxide or an oxide salt of a transition metal or of a metalloid.
  • the feed comprises SiO 2 or TiO 2 as metal oxide and Sn as poor metal.
  • the size of the particles of the filler is preferably between 0.2 and 5 ⁇ m, preferably being less than 1 ⁇ m and / or greater than 0.5 ⁇ m.
  • the shape of the filler particles can be spherical, platelet or needle-like.
  • the particles of the filler have a core made of TiO 2 or SiO 2 covered with tin oxide doped with antimony.
  • the invention makes it possible, depending on the particulate system used, to have a spectral signature in the unitary IR, readable in transmission over the entire substrate, due to the mass incorporation during its manufacture.
  • IR is meant the infrared in the spectral band 700nm - 1500nm.
  • the invention also offers the advantage, through detection in transmission, of avoiding jamming the responses of other security elements detected in reflection.
  • the detection can be carried out according to the invention in unprinted areas, which offers additional security compared to an ink absorbing in the IR and detected in reflection.
  • the invention also makes it possible, if desired, to dispense with the use of certain conventional paper fillers such as titanium dioxide, kaolin or calcium carbonate, or to reduce the content thereof, while at the same time achieving the optical properties of whiteness and opacity usually desired in the manufacture of paper for banknotes in particular.
  • the substrate can thus comprise less than 4% by dry weight of TiO 2 in the form of TiO 2 particles, relative to the total dry weight of the substrate, better still being completely devoid of TiO 2 in the form of TiO 2 particles.
  • the substrate may comprise less than 4% by dry weight of kaolin or of calcium carbonate relative to the total dry weight of the substrate.
  • Another advantage of the present invention is to provide electro-conductivity to the substrate, which can give it a specific electrical signature and help dissipate electrostatic charges in the event of the presence of large areas of plastic material, in particular during storage.
  • a paper substrate of at least one plastic element such as a wide security thread, a lamination strip, a foil or a film, in particular in the case of a paper / plastic hybrid ticket.
  • filler should be understood to mean a compound introduced in the particulate state into the rest of the substrate, and which remains in the particulate state.
  • the particulate system can comprise or consist of a mixture of at least one filler consisting of at least one metal oxide or metal oxide salt, in particular a mica, and at least one lean metal in ionic, molecular form. , or atomic.
  • the particulate system can also comprise or be constituted by a filler consisting of at least one metal oxide or metal oxide salt, in particular a mica, and at least one lean metal in ionic, molecular or atomic form.
  • a filler of the core-shell type comprising a core consisting of said metal oxide or metal oxide salt and a shell consisting of said poor metal in ionic, molecular or atomic form, preferably in molecular form.
  • it is a doped load, said metal oxide or metal oxide salt being doped with said lean metal in atomic form.
  • the metal oxide is chosen from TiO 2 , ZnO, ZrO 2 , CeO 2 , SiO 2 , Al 2 O 3 , mica, talc and their mixtures.
  • the metal oxide may in particular have a refractive index greater than 1.8 (TiO 2 , ZnO, etc.) or less than 1.8 (SiO 2 , Al 2 O 3 , etc.) allowing for example to have a colorless filler which does not modify the optical properties of a papermaking substrate.
  • the doped poor metal metal oxide is doped with metalloids or poor metals, in particular with antimony, aluminum or germanium. Depending on the poor metals and metalloids chosen, the infrared absorption can be modified and thus obtain a different spectral response, to make it specific to each substrate if desired.
  • the poor metal can be in the form of tin oxide.
  • the doped poor metal metal oxide, on the one hand, and the metal oxide or the metal oxide salt, in particular a mica, on the other hand, can respectively constitute the shell and the core of a pigment to core bark structure.
  • the heart can be hollow.
  • the particulate system may consist of particles with a maximum size less than or equal to 100 ⁇ m, preferably less than 60 ⁇ m.
  • the particulate system may consist of particles of number-average size D50 less than or equal to 10 ⁇ m, preferably 5 ⁇ m.
  • the particulate system may consist of particles of number-average size D50 less than or equal to 1 ⁇ m, preferably 0.5 ⁇ m.
  • the particulate system may consist of particles with a maximum size less than or equal to 5 ⁇ m, preferably less than 1 ⁇ m.
  • the particulate system may consist of particles with a minimum size greater than or equal to 0.2 ⁇ m, preferably 0.5 ⁇ m.
  • the particulate system can comprise and / or be made up of spherical particles.
  • the particulate system can comprise and / or be made up of needle-like and / or platelet particles, which offers the advantage of increasing the specific surface.
  • the particulate system may comprise a single doped metal oxide or, alternatively, several doped metal oxides.
  • the particulate system can be substantially white and opaque to visible light, or alternatively be transparent.
  • the substrate preferably comprises between 0.1 and 20% by mass, relative to the total mass of the finished dry substrate, of said particulate system, better between 0.2 and 5, even better between 0.5 and 2.5% .
  • the amount of said particulate system is adjusted so as not to darken the substrate unduly, giving it a grayish appearance.
  • the substrate can be paper.
  • the substrate may in particular be suitable for the manufacture of banknotes.
  • the substrate can be watermarked.
  • the substrate can also be non-fibrous.
  • the substrate when a papermaker, can comprise natural and / or synthetic fibers. In the case in particular of a substrate for banknotes, the latter may comprise flax fibers and / or cotton fibers, in particular cotton linters.
  • the substrate can be made of plastic, that is to say polymeric material, in particular of polyethylene terephthalate (PET), polycarbonate (PC), polypropylene (PP) or polyethylene (PE).
  • PET polyethylene terephthalate
  • PC polycarbonate
  • PP polypropylene
  • PE polyethylene
  • the plastic can be extruded or co-extruded with the particulate system.
  • a further subject of the invention is a security document comprising a substrate according to the invention, in particular a bank note.
  • a subject of the invention is also a thread, a film, a lamination strip or a security foil comprising a substrate according to the invention.
  • Paper samples are made using a paper machine from a fiber composition 100% cotton linters.
  • the particulate system for samples according to the invention is introduced into the fiber dispersion 100% cotton linters before papermaking.
  • IR absorption measurements (percentage absorption rate) are carried out in transmission between 400 nm and 1000 nm. The absorption spectra are then normalized (on the x-axis) at a wavelength of 500 nm to analyze the behavior of the pigment in IR.
  • the tests show that the pigment used during test 1 exhibits a discriminating absorption from 2% by mass of the pigment. Pigments other than that of test 1, for example of different shape and size, such as those of tests 2, 3 and 4, also exhibit a discriminating response in the IR from a mass content of 2% .
  • the pigments of tests 2 and 3 have a heart of titanium dioxide (TiO 2 ), covered with tin oxide doped with antimony.
  • the pigments of tests 1 and 4 show a more intense response in the IR because they have a particle size greater than that of tests 2 and 3, which facilitates their retention within the structure of the paper during the manufacture of the paper. -this.
  • the pigment of Test 4 exhibits a particle size which influences optical properties such as whiteness and opacity much more.
  • Tests A and B demonstrate that the increase in weight does not significantly modify the IR absorption.
  • the level of pigment used in test 7 makes it possible to have a very strong absorption in the IR but that this leads to marked modifications of the optical properties such as whiteness and opacity.
  • the IR response of the pigments of tests 5 and 6 has a different appearance from the other tests, which makes it possible to distinguish the IR signatures from one another.
  • the two pigments reduce the optical properties such as whiteness and opacity, which can be compensated for by adding conventional paper fillers.
  • the pigments of tests 8 and 9 make it possible to have a very strong absorption in the IR but this causes marked modifications of the optical properties such as whiteness and opacity.
  • the pigments of tests 10 and 11 have a low contribution to IR absorption because their small particle size ( ⁇ 0.2 ⁇ m) does not allow optimal retention within the paper during its manufacture.
  • TO 1 2 3 4 Whiteness % 88.5 81.1 80.61 85.03 77.03 Opacity % 86.30 88.68 89.32 87.29 87.94 TO B 5 6 7 Whiteness % 88.5 89.28 83.67 82.64 75.8 Opacity % 86.30 86.34 80.81 82.18 93.63 TO 1 8 9 10 11 Whiteness % 88.5 81.1 72.8 77.8 86 85.5 Opacity % 86.30 88.68 89.16 87.7 77.7 79.3
  • mixtures of fillers according to the invention can be used.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Paper (AREA)
  • Laminated Bodies (AREA)

Claims (15)

  1. Sicherheitssubstrat zur Papierherstellung, das in seiner Masse dispergiert bevorzugt zwischen 0,1 und 20 Masse-% bezogen auf die Gesamtmasse des Substrats, besser zwischen 0,2 und 5, noch besser zwischen 0,5 und 2,5 eines im IR absorbierenden Partikelsystems beinhaltet, wobei das Partikelsystem umfasst:
    - ein Gemisch aus mindestens einem Füllstoff, der aus mindestens einem Metalloxid oder Metalloxidsalz besteht, insbesondere einem Glimmer, und aus mindestens einem Füllstoff, der aus mindestens einem Metall in Ionen-, Molekül- oder Atomform besteht, und/oder
    - mindestens einen Füllstoff, der aus mindestens einem Metalloxid oder Metalloxidsalz, insbesondere einem Glimmer, und aus mindestens einem Metall in Ionen-, Molekül- oder Atomform besteht,
    wobei das Partikelsystem dem Substrat eine spezifische Transmissionsantwort im IR verleiht, bevorzugt mit mindestens einem Absorptionspeak im IR, insbesondere zwischen 700 und 1000 nm, besser mit mehreren Absorptionspeaks im IR, insbesondere zwischen 700 und 1000 nm,
    wobei das Partikelsystem bevorzugt kugelförmige Partikel beinhaltet und/oder daraus besteht oder wobei das Partikelsystem nadelförmige und/oder plättchenförmige Partikel beinhaltet oder daraus besteht,
    wobei das Metalloxid unter TiO2, ZnO, ZrO2, CeO2, SiO2, Al2O3, Glimmer, Talk und deren Gemischen gewählt ist, wobei das Metall in Form von Metalloxid eines Metalls vorliegt, das mit Halbmetallen oder Metallen dotiert ist.
  2. Substrat nach Anspruch 1, wobei das Metall in Ionenform (Salz), Molekülform (Oxid, insbesondere SnO2), dotiert oder nicht, oder Atomform (Dotierungsmittel, insbesondere Al oder Ga) vorliegt, wobei das Metalloxid oder -oxidsalz ein Oxid beziehungsweise ein Oxidsalz eines Übergangsmetalls oder eines Halbmetalls ist.
  3. Substrat nach einem der vorhergehenden Ansprüche, wobei das Metalloxid unter TiO2, SiO2, ZnO, Glimmer oder Talk, besser TiO2 oder SiO2 gewählt ist.
  4. Substrat nach einem der vorhergehenden Ansprüche, wobei das dotierte Metalloxid eines Metalls mit Antimon dotiert ist oder das dotierte Metalloxid eines Metalls mit Aluminium oder Germanium dotiert ist.
  5. Substrat nach einem der vorhergehenden Ansprüche, wobei das dotierte Metalloxid eines Metalls ein Zinnoder Indiumoxid ist, bevorzugt ein Zinnoxid.
  6. Substrat nach einem der vorhergehenden Ansprüche, wobei der Füllstoff aus Partikeln besteht, die einen Kern aus SiO2 oder TiO2 haben, der mit einem mit Antimon dotierten Zinnoxid überzogen ist.
  7. Substrat nach einem der vorhergehenden Ansprüche, wobei das Metall einerseits und das Metalloxid oder Metalloxidsalz, insbesondere ein Glimmer, anderseits die Schale, beziehungsweise den Kern eines Pigments mit Kern-Schale-Struktur bilden, wobei der Kern bevorzugt hohl ist.
  8. Substrat nach einem der vorhergehenden Ansprüche, das weniger als 4 % Trockengewicht TiO2 in Form von TiO2-Partikeln bezogen auf das Gesamttrockengewicht des Substrats beinhaltet, besser vollkommen frei von TiO2 in Form von TiO2-Partikeln ist.
  9. Substrat nach einem der vorhergehenden Ansprüche, das weniger als 4 % Trockengewicht Kaolin oder Calciumcarbonat bezogen auf das Gesamttrockengewicht des Substrats beinhaltet.
  10. Substrat nach einem der vorhergehenden Ansprüche, wobei das Partikelsystem aus Partikeln mit einer zahlenmittleren Größe D50 kleiner oder gleich 10 µm, bevorzugt kleiner als 5 µm besteht.
  11. Substrat nach einem der Ansprüche 1 bis 8, wobei das Partikelsystem aus Partikeln mit einer zahlenmittleren Größe D50 kleiner oder gleich 1 µm, bevorzugt kleiner als 0,5 µm besteht.
  12. Substrat nach einem der vorhergehenden Ansprüche, wobei das Partikelsystem ein einziges dotiertes Metalloxid beinhaltet oder wobei das Partikelsystem mehrere dotierte Metalloxide beinhaltet.
  13. Substrat nach einem der vorhergehenden Ansprüche, wobei das Partikelsystem im Wesentlichen weiß und für sichtbares Licht undurchlässig ist oder wobei das Partikelsystem transparent ist.
  14. Sicherheitsdokument mit einem Substrat nach einem der vorhergehenden Ansprüche, wobei das Substrat insbesondere ein Wasserzeichen aufweist.
  15. Sicherheitsfaden, -film oder -folie mit einem Substrat nach einem der Ansprüche 1 bis 13.
EP17791021.3A 2016-10-20 2017-10-18 Sicherheitssubstrat Active EP3529416B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1660177A FR3057881B1 (fr) 2016-10-20 2016-10-20 Substrat de securite
PCT/EP2017/076637 WO2018073320A1 (fr) 2016-10-20 2017-10-18 Substrat de sécurité

Publications (2)

Publication Number Publication Date
EP3529416A1 EP3529416A1 (de) 2019-08-28
EP3529416B1 true EP3529416B1 (de) 2021-08-04

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ID=57750207

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17791021.3A Active EP3529416B1 (de) 2016-10-20 2017-10-18 Sicherheitssubstrat

Country Status (3)

Country Link
EP (1) EP3529416B1 (de)
FR (1) FR3057881B1 (de)
WO (1) WO2018073320A1 (de)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000032700A1 (en) * 1998-12-02 2000-06-08 Engelhard Corporation High opacity kaolin hybrid pigments
PL1790701T5 (pl) 2005-11-25 2012-05-31 Sicpa Holding Sa Farba do wklęsłodruku absorbująca w zakresie podczerwieni
GB2438196B (en) * 2006-05-13 2008-05-28 Inovink Ltd Improvements in or relating to printing
JP5489031B2 (ja) 2008-10-01 2014-05-14 共同印刷株式会社 偽造防止用赤外線吸収インキ及び印刷物
KR101131145B1 (ko) 2010-02-02 2012-04-03 한국조폐공사 적외선 흡수 특성을 가지는 위조방지용 용지
EP2670801B1 (de) * 2011-02-01 2020-06-17 Reserve Bank of Australia Transparente infrarotabsorbierende materialien

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2018073320A1 (fr) 2018-04-26
FR3057881B1 (fr) 2020-06-12
EP3529416A1 (de) 2019-08-28
FR3057881A1 (fr) 2018-04-27

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