EP1647945A1 - Document de valeur à propriétés luminescentes - Google Patents
Document de valeur à propriétés luminescentes Download PDFInfo
- Publication number
- EP1647945A1 EP1647945A1 EP04024533A EP04024533A EP1647945A1 EP 1647945 A1 EP1647945 A1 EP 1647945A1 EP 04024533 A EP04024533 A EP 04024533A EP 04024533 A EP04024533 A EP 04024533A EP 1647945 A1 EP1647945 A1 EP 1647945A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- feature
- luminescent
- stands
- group
- elements selected
- 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- Withdrawn
Links
- 238000004020 luminiscence type Methods 0.000 title claims description 63
- 230000004044 response Effects 0.000 claims abstract description 87
- 230000005284 excitation Effects 0.000 claims abstract description 68
- 230000005855 radiation Effects 0.000 claims abstract description 45
- 239000000758 substrate Substances 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims description 160
- 230000003595 spectral effect Effects 0.000 claims description 140
- 239000011159 matrix material Substances 0.000 claims description 33
- 239000000203 mixture Substances 0.000 claims description 20
- 229910052710 silicon Inorganic materials 0.000 claims description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 239000000049 pigment Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229910052729 chemical element Inorganic materials 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 239000008240 homogeneous mixture Substances 0.000 claims 2
- 238000001228 spectrum Methods 0.000 description 73
- 229910052688 Gadolinium Inorganic materials 0.000 description 47
- 229910052691 Erbium Inorganic materials 0.000 description 34
- 238000000295 emission spectrum Methods 0.000 description 33
- 229910052684 Cerium Inorganic materials 0.000 description 30
- 229910052791 calcium Inorganic materials 0.000 description 30
- 229910052712 strontium Inorganic materials 0.000 description 28
- 229910052693 Europium Inorganic materials 0.000 description 25
- 229910052746 lanthanum Inorganic materials 0.000 description 25
- 229910052749 magnesium Inorganic materials 0.000 description 25
- 229910052692 Dysprosium Inorganic materials 0.000 description 24
- 229910052689 Holmium Inorganic materials 0.000 description 24
- 229910052779 Neodymium Inorganic materials 0.000 description 24
- 229910052777 Praseodymium Inorganic materials 0.000 description 24
- 229910052772 Samarium Inorganic materials 0.000 description 24
- 229910052771 Terbium Inorganic materials 0.000 description 24
- 229910052775 Thulium Inorganic materials 0.000 description 24
- 229910052769 Ytterbium Inorganic materials 0.000 description 24
- 229910052788 barium Inorganic materials 0.000 description 24
- 229910052727 yttrium Inorganic materials 0.000 description 24
- 229910052765 Lutetium Inorganic materials 0.000 description 21
- 229910052698 phosphorus Inorganic materials 0.000 description 18
- 238000000695 excitation spectrum Methods 0.000 description 17
- 239000000843 powder Substances 0.000 description 17
- 229910052787 antimony Inorganic materials 0.000 description 16
- 229910052758 niobium Inorganic materials 0.000 description 14
- 229910052715 tantalum Inorganic materials 0.000 description 13
- 229910009372 YVO4 Inorganic materials 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 12
- 229910052745 lead Inorganic materials 0.000 description 12
- 229910052761 rare earth metal Inorganic materials 0.000 description 12
- 239000000123 paper Substances 0.000 description 11
- 229910000164 yttrium(III) phosphate Inorganic materials 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 10
- 239000005371 ZBLAN Substances 0.000 description 9
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 229910052732 germanium Inorganic materials 0.000 description 9
- 229910052718 tin Inorganic materials 0.000 description 9
- 229910052882 wollastonite Inorganic materials 0.000 description 9
- -1 carbocyanin-iodide Chemical compound 0.000 description 8
- 229910052804 chromium Inorganic materials 0.000 description 8
- 229910052725 zinc Inorganic materials 0.000 description 8
- RCUAPGYXYWSYKO-UHFFFAOYSA-J barium(2+);phosphonato phosphate Chemical compound [Ba+2].[Ba+2].[O-]P([O-])(=O)OP([O-])([O-])=O RCUAPGYXYWSYKO-UHFFFAOYSA-J 0.000 description 7
- 230000008901 benefit Effects 0.000 description 7
- 238000007639 printing Methods 0.000 description 7
- 229910052844 willemite Inorganic materials 0.000 description 7
- 229910016064 BaSi2 Inorganic materials 0.000 description 6
- 239000011521 glass Substances 0.000 description 6
- 229910052706 scandium Inorganic materials 0.000 description 6
- OMOVVBIIQSXZSZ-UHFFFAOYSA-N [6-(4-acetyloxy-5,9a-dimethyl-2,7-dioxo-4,5a,6,9-tetrahydro-3h-pyrano[3,4-b]oxepin-5-yl)-5-formyloxy-3-(furan-3-yl)-3a-methyl-7-methylidene-1a,2,3,4,5,6-hexahydroindeno[1,7a-b]oxiren-4-yl] 2-hydroxy-3-methylpentanoate Chemical compound CC12C(OC(=O)C(O)C(C)CC)C(OC=O)C(C3(C)C(CC(=O)OC4(C)COC(=O)CC43)OC(C)=O)C(=C)C32OC3CC1C=1C=COC=1 OMOVVBIIQSXZSZ-UHFFFAOYSA-N 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 229910052733 gallium Inorganic materials 0.000 description 5
- 229910052716 thallium Inorganic materials 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 229920001131 Pulp (paper) Polymers 0.000 description 4
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 230000004069 differentiation Effects 0.000 description 4
- 238000001748 luminescence spectrum Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 229910002226 La2O2 Inorganic materials 0.000 description 3
- 238000007792 addition Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010348 incorporation Methods 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 229910052711 selenium Inorganic materials 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 229910052714 tellurium Inorganic materials 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- HJCUTNIGJHJGCF-UHFFFAOYSA-N 9,10-dihydroacridine Chemical compound C1=CC=C2CC3=CC=CC=C3NC2=C1 HJCUTNIGJHJGCF-UHFFFAOYSA-N 0.000 description 2
- 229910017848 MgGa2O4 Inorganic materials 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 229910002412 SrMoO4 Inorganic materials 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000013475 authorization Methods 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000013067 intermediate product Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229920000307 polymer substrate Polymers 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- QWVYNEUUYROOSZ-UHFFFAOYSA-N trioxido(oxo)vanadium;yttrium(3+) Chemical compound [Y+3].[O-][V]([O-])([O-])=O QWVYNEUUYROOSZ-UHFFFAOYSA-N 0.000 description 2
- 238000002211 ultraviolet spectrum Methods 0.000 description 2
- OOBOPFKBJZPFHL-UHFFFAOYSA-M 1',2',4',5'-tetramethyl-6',7-dioxospiro[acridine-9,3'-cyclohexa-1,4-diene]-2-olate Chemical compound CC1=C(C)C(=O)C(C)=C(C)C21C1=CC([O-])=CC=C1N=C1C=CC(=O)C=C12 OOBOPFKBJZPFHL-UHFFFAOYSA-M 0.000 description 1
- GCXNJAXHHFZVIM-UHFFFAOYSA-N 2-phenylfuran Chemical compound C1=COC(C=2C=CC=CC=2)=C1 GCXNJAXHHFZVIM-UHFFFAOYSA-N 0.000 description 1
- BCHZICNRHXRCHY-UHFFFAOYSA-N 2h-oxazine Chemical compound N1OC=CC=C1 BCHZICNRHXRCHY-UHFFFAOYSA-N 0.000 description 1
- 229910020197 CePO4 Inorganic materials 0.000 description 1
- 241000202567 Fatsia japonica Species 0.000 description 1
- 229910001477 LaPO4 Inorganic materials 0.000 description 1
- PJANXHGTPQOBST-VAWYXSNFSA-N Stilbene Natural products C=1C=CC=CC=1/C=C/C1=CC=CC=C1 PJANXHGTPQOBST-VAWYXSNFSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JNDMLEXHDPKVFC-UHFFFAOYSA-N aluminum;oxygen(2-);yttrium(3+) Chemical compound [O-2].[O-2].[O-2].[Al+3].[Y+3] JNDMLEXHDPKVFC-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- UHOVQNZJYSORNB-UHFFFAOYSA-N benzene Substances C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000005606 carbostyryl group Chemical group 0.000 description 1
- 229910019990 cerium-doped yttrium aluminum garnet Inorganic materials 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- VYXSBFYARXAAKO-WTKGSRSZSA-N chembl402140 Chemical compound Cl.C1=2C=C(C)C(NCC)=CC=2OC2=C\C(=N/CC)C(C)=CC2=C1C1=CC=CC=C1C(=O)OCC VYXSBFYARXAAKO-WTKGSRSZSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002284 excitation--emission spectrum Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- GNBHRKFJIUUOQI-UHFFFAOYSA-N fluorescein Chemical compound O1C(=O)C2=CC=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 GNBHRKFJIUUOQI-UHFFFAOYSA-N 0.000 description 1
- 239000005383 fluoride glass Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- HYLDLLCHFLSKAG-UHFFFAOYSA-M lissamine flavine FF Chemical compound [Na+].C1=CC(C)=CC=C1N(C1=O)C(=O)C2=C3C1=CC=CC3=C(N)C(S([O-])(=O)=O)=C2 HYLDLLCHFLSKAG-UHFFFAOYSA-M 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- LKKPNUDVOYAOBB-UHFFFAOYSA-N naphthalocyanine Chemical compound N1C(N=C2C3=CC4=CC=CC=C4C=C3C(N=C3C4=CC5=CC=CC=C5C=C4C(=N4)N3)=N2)=C(C=C2C(C=CC=C2)=C2)C2=C1N=C1C2=CC3=CC=CC=C3C=C2C4=N1 LKKPNUDVOYAOBB-UHFFFAOYSA-N 0.000 description 1
- 150000004866 oxadiazoles Chemical class 0.000 description 1
- 150000002916 oxazoles Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000005365 phosphate glass Substances 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- HTNRBNPBWAFIKA-UHFFFAOYSA-M rhodamine 700 perchlorate Chemical compound [O-]Cl(=O)(=O)=O.C1CCN2CCCC3=C2C1=C1OC2=C(CCC4)C5=[N+]4CCCC5=CC2=C(C(F)(F)F)C1=C3 HTNRBNPBWAFIKA-UHFFFAOYSA-M 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- PJANXHGTPQOBST-UHFFFAOYSA-N stilbene Chemical compound C=1C=CC=CC=1C=CC1=CC=CC=C1 PJANXHGTPQOBST-UHFFFAOYSA-N 0.000 description 1
- 235000021286 stilbenes Nutrition 0.000 description 1
- 125000005504 styryl group Chemical group 0.000 description 1
- 239000002203 sulfidic glass Substances 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 150000001911 terphenyls Chemical class 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 229910019901 yttrium aluminum garnet Inorganic materials 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
Definitions
- the substrate 10 can likewise be any other type, including substrates for intermediate products in the form of a supporting material, such as a film or a thread, which is connected to the end substrate to be secured.
- the substrate 10 comprises a luminescent security feature 100.
- rare earth elements as a luminophore are preferably combined with inorganic matrices, and organic luminophores combined with organic matrices.
- Fig. 6 shows the excitation spectra (dashed lines) as well as the emission spectra (whole line) of the three luminescent substances.
- the emission peak of Eu:Sr 2 P 2 O 7 is at approx. 450 nm, the emission peak of Mn:MgGa 2 O 4 at approx. 500 nm and the emission peak of YNBO 4 :Tb at approx. 545 nm.
- a central bank can for example resolve both the excitation and the emission spectra, while e.g. a commercial bank can resolve the excitation spectrum but not the emission spectrum and can thus measure only an envelope 30 (dot-dash line) in the range around 500 nm.
- a commercial bank can resolve the excitation spectrum but not the emission spectrum and can thus measure only an envelope 30 (dot-dash line) in the range around 500 nm.
- envelope 30 dot-dash line
- the luminescence feature 100 comprises e.g. at least two luminescent materials, which produce respective luminescence spectral bands as a response when excited by an excitation radiation E.
- One of the further modes e.g. is the following case, in which the central bank can ascertain the response signal as a completely highly-resolved spectrum across the whole measurable wavelength range.
- the commercial banks e.g. would only be able to resolve a first spectral partial area, while in a second spectral partial area they could measure the presence or absence of a signal, but they would not be able to resolve it.
- the producers of vending machines or tills would e.g. only be able to receive information about the second spectral partial area.
- the last-mentioned group may also only be able to measure the presence or absence of a signal but not to resolve it.
- the detector employed in this area reads the encoded spectrum or the encoded spectra (excitation spectrum and/or emission spectrum) and checks, whether it is a certain spectral signature, i.e. one of several codes possible with bank notes, whereas, however, it is not possible to ascertain which of the several possible encodings in fact is present.
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Luminescent Compositions (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04024533A EP1647945A1 (fr) | 2004-10-14 | 2004-10-14 | Document de valeur à propriétés luminescentes |
| ES05784193.4T ES2627416T3 (es) | 2004-09-02 | 2005-09-01 | Característica de seguridad luminiscente y procedimiento para fabricar la característica de seguridad luminiscente |
| KR1020077007220A KR101280751B1 (ko) | 2004-09-02 | 2005-09-01 | 발광 특성을 갖는 가치 증서 |
| EP05784193.4A EP1805727B1 (fr) | 2004-09-02 | 2005-09-01 | Élément de sécurite luminescent et procédé de production de l'élément de sécurite luminescent |
| CN2005800369566A CN101076835B (zh) | 2004-09-02 | 2005-09-01 | 具有发光特性的有价文件 |
| US11/660,809 US20080116272A1 (en) | 2004-09-02 | 2005-09-01 | Value Document with Luminescent Properties |
| AU2005279291A AU2005279291B2 (en) | 2004-09-02 | 2005-09-01 | Value document with luminescent properties |
| PCT/EP2005/009435 WO2006024530A1 (fr) | 2004-09-02 | 2005-09-01 | Document de valeur ayant des proprietes luminescentes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04024533A EP1647945A1 (fr) | 2004-10-14 | 2004-10-14 | Document de valeur à propriétés luminescentes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1647945A1 true EP1647945A1 (fr) | 2006-04-19 |
Family
ID=34926991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04024533A Withdrawn EP1647945A1 (fr) | 2004-09-02 | 2004-10-14 | Document de valeur à propriétés luminescentes |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP1647945A1 (fr) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4452843A (en) * | 1980-05-30 | 1984-06-05 | Gao Gesellschaft Fur Automation Und Organisation Mbh. | Security paper |
| US5666417A (en) * | 1993-09-27 | 1997-09-09 | Angstrom Technologies, Inc. | Fluorescence authentication reader with coaxial optics |
| US6223876B1 (en) * | 1996-06-04 | 2001-05-01 | Global Payment Technologies, Inc. | Bank note validator |
| EP1182048A1 (fr) * | 2000-08-21 | 2002-02-27 | Banque De France | Procédé d'authentification de documents sensibles |
-
2004
- 2004-10-14 EP EP04024533A patent/EP1647945A1/fr not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4452843A (en) * | 1980-05-30 | 1984-06-05 | Gao Gesellschaft Fur Automation Und Organisation Mbh. | Security paper |
| US5666417A (en) * | 1993-09-27 | 1997-09-09 | Angstrom Technologies, Inc. | Fluorescence authentication reader with coaxial optics |
| US6223876B1 (en) * | 1996-06-04 | 2001-05-01 | Global Payment Technologies, Inc. | Bank note validator |
| EP1182048A1 (fr) * | 2000-08-21 | 2002-02-27 | Banque De France | Procédé d'authentification de documents sensibles |
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