EP3983241A1 - Sicherheitselement mit bei beleuchtung mit elektromagnetischer strahlung im infraroten wellenlängenbereich unterschiedlichen druckfarben - Google Patents
Sicherheitselement mit bei beleuchtung mit elektromagnetischer strahlung im infraroten wellenlängenbereich unterschiedlichen druckfarbenInfo
- Publication number
- EP3983241A1 EP3983241A1 EP20733192.7A EP20733192A EP3983241A1 EP 3983241 A1 EP3983241 A1 EP 3983241A1 EP 20733192 A EP20733192 A EP 20733192A EP 3983241 A1 EP3983241 A1 EP 3983241A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- printing ink
- printing
- security element
- electromagnetic radiation
- transparent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007639 printing Methods 0.000 title claims abstract description 115
- 230000005670 electromagnetic radiation Effects 0.000 title claims abstract description 44
- 239000000976 ink Substances 0.000 title description 76
- 238000005286 illumination Methods 0.000 title description 2
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 239000002985 plastic film Substances 0.000 claims description 7
- 229920006255 plastic film Polymers 0.000 claims description 7
- 238000007645 offset printing Methods 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000007646 gravure printing Methods 0.000 claims description 2
- 238000007641 inkjet printing Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000007650 screen-printing Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004033 plastic Substances 0.000 abstract description 3
- 229920003023 plastic Polymers 0.000 abstract description 3
- 230000002745 absorbent Effects 0.000 abstract 1
- 239000002250 absorbent Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000003086 colorant Substances 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
- B42D25/24—Passports
-
- 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
Definitions
- the invention relates to a security element for application to a surface of a document of value or at least partial embedding in a substrate of the document of value, for example a bank note or a passport, the security element consisting of a plastic film.
- Security elements such as security threads for passport papers, are produced in the prior art as so-called country code threads with a flag and a negative or positive text in gravure, UV offset or digital printing on a plastic substrate.
- these security threads can be equipped with a fluorescence. The same printing color with the same properties is used for the text (negative or positive text).
- security films are known that are applied to the surface of the substrate of a bank note.
- these security films extend from the upper edge to the lower edge of the banknotes and cover a hole in the banknotes.
- DE 102008049595 A1 discloses a printing ink which absorbs electromagnetic radiation in the infrared wavelength range and has at least one boron which absorbs radiation in the wavelength range from 800 nm to 2500 nm. This IR absorbing printing ink appears invisible to the naked eye under daylight and is visible under IR light.
- the invention is therefore based on the object of developing a generic security element in such a way that the disadvantages of the prior art Technology are eliminated and the protection against counterfeiting is further increased.
- At least one printing ink transparent in the infrared wavelength range of electromagnetic radiation (hereinafter referred to as IR-transparent printing ink) with a first reflectance value and at least one printing ink that absorbs electromagnetic radiation in the infrared wavelength range (hereinafter referred to as IR-absorbing) is applied to the plastic film of the security element Referred to as printing ink) with a second reflectance value, the distance between the first and the second reflectance value being at least 40%.
- the wavelength of the electromagnetic radiation in the infrared wavelength range for the IR-transparent and IR-absorbing printing inks to be tested is particularly preferably in the range from 700 nm to 1000 nm.
- the at least one IR-transparent printing ink particularly preferably has a first reflectance value of> 90% and the at least one IR-absorbing printing ink has a second reflectance value of ⁇ 50%.
- the distance of "at least 40%" between the first and the second reflectance value or the reflectance values of the IR-transparent and the IR-absorbing printing inks is only present during the printing process or in the case of a security feature that is freshly printed.
- the distance between the reflectance values of the two printing inks is decreasing and it is more and more difficult to distinguish them when illuminated with electromagnetic radiation in the infrared wavelength range.
- the distance between the reflectance values of the two printing inks should not be less than 20% during the entire circulation of a value document. In the case of passport papers in which a security thread is completely embedded in the passport paper, however, soiling and thus a decrease in the distance between the two remission values is not to be expected.
- the plastic film which has the security element according to the invention as a substrate, consists for example of polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- the IR-transparent printing ink when illuminated with electromagnetic radiation in the infrared wavelength range, the radiation is reflected by over 90%.
- the IR transparency is usually checked with a filter of 850 nm and 940 nm wavelength.
- the text (negative or positive text) or patterns, characters, etc. are printed with two different printing inks, which differ visibly with regard to the IR transparency.
- the printing of an IR-transparent and an IR-absorbing printing ink is particularly preferably carried out in UV offset printing.
- the IR transparency is checked using an IR camera.
- a particular advantage of the invention is an additional detection of the authenticity of a value document, for example a passport paper, by checking the printing inks under IR lighting.
- the security element according to the invention can also have other printing features, such as fluorescence (full-surface, strip-like, monochrome, multicolored).
- fluorescence full-surface, strip-like, monochrome, multicolored.
- the printing inks used according to the invention which have, for example, poor resistance to solvents, acids, alkalis and / or bleaching agents, increase the manipulation security as a supplement to the chemical protection of the substrate or paper.
- the at least one IR-transparent printing ink and the at least one IR-absorbing printing ink is particularly preferably a solvent-based, water-based or UV-curable printing ink or toner that is used in gravure printing, digital printing, UV offset printing, screen printing, inkjet printing or flexographic printing is printed on the plastic film of the security element.
- Printing inks which appear transparent when illuminated with electromagnetic radiation in the infrared wavelength range are mostly colors With dyes, IR-absorbing printing inks, however, are mostly pigmented printing inks. Both complete transparency and visibility when illuminated with electromagnetic radiation in the infrared wavelength range are possible, but also gray levels of reduced transparency, which can be controlled by the amount of absorbing pigment in the printing ink.
- the authenticity of the security element can be checked with the aid of IR sensors or IR test devices (such as an IR camera) in that, when illuminated with electromagnetic radiation in the infrared wavelength range, the IR-transparent printing elements cannot be seen, but only the IR-absorbing elements Printing elements.
- IR sensors or IR test devices such as an IR camera
- all printing elements of the IR-transparent and IR-absorbing printing ink (s) are visible.
- the IR transparency thus functions as a hidden feature, whereby information that is continuously legible in visible light disappears when illuminated with electromagnetic radiation in the infrared wavelength range.
- the IR-transparent and IR-absorbing printing inks can be printed next to one another or also on top of one another or can be arranged on opposite sides of the substrate of the security element.
- the IR-transparent and IR-absorbing printing inks having a different hue or contrast when illuminated with electromagnetic radiation in the infrared wavelength range should preferably have the same hue when illuminated with visible electromagnetic radiation. If several printing inks are used on the security element, either only one IR-absorbing ink can be used Have properties and several printing inks appear IR-transparent or vice versa.
- positive texts can be printed from two different printing inks with different IR transparency, one text block being recognizable when illuminated with electromagnetic radiation in the infrared wavelength range and another text block being transparent, i.e. not visible.
- a positive text consists of the two printing inks that differ under IR transparency and only individual letters are IR-transparent, so that a new text is visible which consists only of the IR-absorbing printing ink.
- Patterns, characters or other elements can also consist of an IR-transparent and IR-absorbing printing ink which, when arranged next to one another, result in a different pattern when illuminated with electromagnetic radiation in the infrared wavelength range. If the IR-transparent printing ink (s) and IR-absorbing printing are printed one on top of the other, the IR-transparent printing ink (s) should have a darker shade (preferably black) if possible, so that when illuminated with electromagnetic radiation in the infrared wavelength the pattern, characters, text of the IR-absorbing printing ink (s) can be recognized.
- the IR-absorbing printing ink can have different patterns and characters than the IR-transparent printing ink.
- the print colors are printed on top of each other and if they have the same color tone, the superimposed areas can be seen when viewed in incident light and in transmitted light. In the case of illumination with electromagnetic radiation in the infrared wavelength range, only the IR-absorbing pressure elements can again be seen.
- the IR-transparent printing ink (s) can also have fluorescent properties. When illuminated with visible electromagnetic radiation, the printing elements are visible, while when illuminated with electromagnetic radiation in the infrared wavelength range, the printing elements cannot be recognized and when illuminated with electromagnetic radiation in the ultraviolet wavelength range, the printing elements fluoresce.
- the IR-transparent and IR-absorbing printing inks can also have a different hue under UV light, so that when illuminated with visible electromagnetic radiation a pattern can be recognized, for example a star, which when illuminated with electromagnetic radiation in the infrared wavelength range results in a circle (IR-absorbing printing ink) and a pattern of two or more fluorescent colors can be seen under UV light.
- the IR-transparent and IR-absorbing printing inks with different Fluoreszenzei properties are arranged next to each other, but can also be printed on top of each other.
- the arrangement of the IR-transparent and IR-absorbing printing ink (s) is an arrangement of bits which can be read as a code by machine or optically. When illuminated with visible electromagnetic radiation, both printing colors can be recognized and the overall code can thus be checked. When illuminated with electromagnetic radiation in the infrared wavelength range, only the bits of the IR-absorbing printing ink are recognizable and result in a new code. Only when both codes are correctly recognized when illuminated with visible electromagnetic radiation and in the infrared wavelength range can the value document be recognized as genuine.
- the individual bits can also contain patterns, characters, such as negative texts, which result in certain information when illuminated with visible electromagnetic radiation and different information when illuminated with electromagnetic radiation in the infrared wavelength range.
- the security element according to the invention can also consist of a multitude of an IR-transparent and an IR-absorbing printing elements, the IR-absorbing printing elements containing patterns or characters, for example as negative texts, which color with an IR-transparent printing, preferably in the same shade , are overprinted.
- the patterns or characters of the IR-absorbing printing ink cannot be recognized by the overprint of the IR-transparent printing ink.
- the IR-transparent printing ink is not visible and the IR-absorbing printing elements can be recognized with the corresponding patterns or characters.
- Documents of value for which a security element according to the invention can be used are in particular banknotes, shares, bonds, deeds den, vouchers, checks, high-quality admission tickets, but also other papers prone to forgery, such as passports and other identification documents, such as cards such as credit or debit cards, the card body of which has at least one layer of security paper, and also product security elements such as labels, Seals, packaging, folding boxes, package inserts and the like.
- the simplified designation of value document includes all of the above materials, documents and product security means.
- Information within the meaning of this invention is a visually perceptible representation designed in the form of a pattern. This can, for example, form an alphanumeric string of digits and / or letters, a graphic illustration, an image, a text or other characters.
- the information particularly preferably consists of positive and / or negative motifs.
- a motif element itself is applied to the substrate, whereas in the case of a negative motif, the area surrounding the motif element is applied to the substrate.
- a positive motif is, for example, a letter printed in dark color on the light substrate.
- a negative motif is, for example, an area applied in dark color to the light-colored substrate, which has an unprinted area in the form of a letter within the area.
- FIG. 1 shows a side view of a security element according to the invention according to a first exemplary embodiment
- FIG. 2 shows a side view of a security element according to the invention in accordance with a second exemplary embodiment
- FIG. 3 shows a side view of a security element according to the invention in accordance with a third exemplary embodiment
- FIG. 4 shows a side view of a security element according to the invention in accordance with a fourth exemplary embodiment
- 5 shows a side view of a security element according to the invention according to a fifth exemplary embodiment
- 6 shows a side view of a security element according to the invention according to a sixth exemplary embodiment
- FIG. 7 shows a side view of a security element according to the invention in accordance with a seventh exemplary embodiment
- FIG. 8 shows a top view of a security element according to the invention in accordance with an eighth exemplary embodiment
- FIG. 9 shows a top view of a security element according to the invention in accordance with a ninth exemplary embodiment
- FIG. 10 shows a top view of a security element according to the invention according to a tenth exemplary embodiment.
- Fig. 1 shows a schematic side view of an inventive security element according to a third embodiment.
- a substrate 1 for example a PET film
- two infrared transparent printing inks 2 and 3 and two infrared-absorbing printing colors 4 and 5 are printed on one side.
- the printing inks 2, 3, 4 and 5 are printed at a certain distance from one another.
- the printing inks 2, 3, 4 and 5 can be printed directly adjacent to one another and thus also without any spacing from one another, as is shown in FIG.
- the infrared-absorbing printing inks 4 and 5 can also be printed onto the opposite side of the substrate 1.
- 4 shows a schematic side view of a security element according to the invention according to a fourth exemplary embodiment, in which an infrared-transparent printing ink 2 is printed completely over an infrared-absorbing printing ink 4 on one side of the substrate 1.
- the printing inks 2 and 4 can also be printed congruently on the opposite side of the substrate 1.
- only a partial overlap of the printing inks 2 and 4 is possible in the exemplary embodiments mentioned above and below.
- Fig. 6 shows schematically in side view a security selement according to the invention according to a sixth embodiment, in which an infrared-transparent printing ink 2 is printed completely over two infrared-absorbing inks 4 and 5 on one side of the substrate 1.
- the printing inks 2 and 4 and 5 can also be printed congruently on the opposite side of the substrate 1.
- FIG. 8 shows a plan view of a security element according to the invention in accordance with an eighth exemplary embodiment, in which an infrared-absorbing printing ink 4 is printed completely over an infrared-transparent printing ink 2 on one side of a substrate (not provided).
- the infrared transparent printing ink 2 here forms the information of a five-pointed star
- the infrared-absorbing printing ink 4 the information of a Krei ses, which is arranged centrally within the five-pointed star.
- FIG. 8 show a top view of a security element according to the invention according to a ninth and tenth exemplary embodiment, in which the words "ID” and PASS "with an infrared-absorbing printing ink and the word” PORT "and the separators or spacers with an infrared transparent printing ink are printed on one side of a substrate (not shown)
- the individual letters are printed as negative motifs with light font against a dark background
- Fig. 10 as positive motifs with dark font against a light background with visible electromagnetic radiation
- an observer recognizes the entire "ID PASSPORT" lettering, in each case top image.
- the observer only recognizes the words "ID PASS", in each case the lower figure.
Landscapes
- Printing Methods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019004229.8A DE102019004229A1 (de) | 2019-06-13 | 2019-06-13 | Sicherheitselement mit bei Beleuchtung mit elektromagnetischer Strahlung im infraroten Wellenlängenbereich unterschiedlichen Druckfarben |
PCT/EP2020/025269 WO2020249259A1 (de) | 2019-06-13 | 2020-06-09 | Sicherheitselement mit bei beleuchtung mit elektromagnetischer strahlung im infraroten wellenlängenbereich unterschiedlichen druckfarben |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3983241A1 true EP3983241A1 (de) | 2022-04-20 |
EP3983241B1 EP3983241B1 (de) | 2024-08-07 |
Family
ID=71096657
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20733192.7A Active EP3983241B1 (de) | 2019-06-13 | 2020-06-09 | Sicherheitselement mit bei beleuchtung mit elektromagnetischer strahlung im infraroten wellenlängenbereich unterschiedlichen druckfarben |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220305837A1 (de) |
EP (1) | EP3983241B1 (de) |
CN (1) | CN113993713B (de) |
DE (1) | DE102019004229A1 (de) |
WO (1) | WO2020249259A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021002759A1 (de) | 2021-05-27 | 2022-12-01 | Giesecke+Devrient Currency Technology Gmbh | Verfahren zur Erzeugung einer lumineszenten Sicherheitsmarkierung und lumineszente Sicherheitsmarkierung |
DE102022002398A1 (de) | 2022-07-01 | 2024-01-04 | Giesecke+Devrient Currency Technology Gmbh | Sicherheitselement mit zwei unterschiedlichen Druckfarben |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2542472B1 (fr) * | 1983-03-11 | 1985-06-21 | Thomson Brandt | Carte a lecture optique portant des informations numeriques et systeme de controle d'acces a des informations diffusees utilisant une telle carte |
US4869532A (en) * | 1986-10-07 | 1989-09-26 | Dainichiseika Color & Chemicals Mfg. Co., Ltd. | Prints and production method thereof |
JP4235968B2 (ja) * | 2000-12-26 | 2009-03-11 | 独立行政法人 国立印刷局 | 真偽判別印刷物及び真偽判別方法 |
EP1308485A1 (de) * | 2001-10-31 | 2003-05-07 | Sicpa Holding S.A. | Tintenset mit IR-Marker |
DE10260124A1 (de) * | 2002-12-19 | 2004-07-01 | Giesecke & Devrient Gmbh | Sicherheitselement für Wertdokumente |
DE10326983A1 (de) * | 2003-06-12 | 2004-12-30 | Giesecke & Devrient Gmbh | Wertdokument mit einem maschinenlesbaren Echtheitskennzeichen |
US8323780B1 (en) * | 2004-10-08 | 2012-12-04 | Hewlett-Packard Development Company, L.P. | Ink coatings for identifying objects |
EP1957268A2 (de) * | 2005-12-05 | 2008-08-20 | 3M Innovative Properties Company | Hochabsorbierende nanopartikel-zusammensetzungen |
GB2438196B (en) * | 2006-05-13 | 2008-05-28 | Inovink Ltd | Improvements in or relating to printing |
JP2009113447A (ja) * | 2007-11-09 | 2009-05-28 | Toppan Printing Co Ltd | 番号印刷媒体 |
DE102008049595A1 (de) | 2008-09-30 | 2010-04-01 | Merck Patent Gmbh | Infrarotabsorbierende Druckfarben |
DE102011105399A1 (de) * | 2011-06-22 | 2012-12-27 | Giesecke & Devrient Gmbh | Sicherheitselement und Verfahren zum Herstellen desselben sowie Verwendung des Sicherheitselements |
US8699089B2 (en) * | 2012-07-19 | 2014-04-15 | Xerox Corporation | Variable data image watermarking using infrared sequence structures in black separation |
DE102016201709A1 (de) * | 2016-02-04 | 2017-08-10 | Bundesdruckerei Gmbh | Wert- oder Sicherheitsprodukt, Verfahren zum Herstellen eines Vorproduktes und Verifikationsverfahren |
EP3229048A1 (de) * | 2016-04-05 | 2017-10-11 | 3M Innovative Properties Company | Infraroterkennbarer rückstrahlender gegenstand |
GB2562262B (en) * | 2017-05-10 | 2019-12-11 | De La Rue Int Ltd | Security devices and methods for their manufacture |
EP3660107A4 (de) * | 2017-07-24 | 2021-05-05 | Sumitomo Metal Mining Co., Ltd. | Dispersionspulver mit infrarotabsorbierenden feinpartikeln, dispersionsflüssigkeit mit dispersionspulver mit infrarotabsorbierenden feinpartikeln, tinte mit dispersionspulver mit infrarotabsorbierenden feinpartikeln, fälschungssichere tinte und bedrucktes material zur fälschungssicherung |
GB2569676B (en) * | 2018-09-21 | 2020-02-19 | Inovink Ltd | Article and security ink comprising near infra-red absorbing material |
-
2019
- 2019-06-13 DE DE102019004229.8A patent/DE102019004229A1/de not_active Withdrawn
-
2020
- 2020-06-09 WO PCT/EP2020/025269 patent/WO2020249259A1/de active Application Filing
- 2020-06-09 CN CN202080041777.6A patent/CN113993713B/zh active Active
- 2020-06-09 US US17/616,815 patent/US20220305837A1/en active Pending
- 2020-06-09 EP EP20733192.7A patent/EP3983241B1/de active Active
Also Published As
Publication number | Publication date |
---|---|
CN113993713B (zh) | 2023-04-07 |
WO2020249259A1 (de) | 2020-12-17 |
EP3983241B1 (de) | 2024-08-07 |
DE102019004229A1 (de) | 2020-12-17 |
US20220305837A1 (en) | 2022-09-29 |
CN113993713A (zh) | 2022-01-28 |
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