EP3342601B1 - Sicherheitsdokument - Google Patents

Sicherheitsdokument Download PDF

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Publication number
EP3342601B1
EP3342601B1 EP17210769.0A EP17210769A EP3342601B1 EP 3342601 B1 EP3342601 B1 EP 3342601B1 EP 17210769 A EP17210769 A EP 17210769A EP 3342601 B1 EP3342601 B1 EP 3342601B1
Authority
EP
European Patent Office
Prior art keywords
area
colour
visible
security
security document
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.)
Revoked
Application number
EP17210769.0A
Other languages
English (en)
French (fr)
Other versions
EP3342601A1 (de
Inventor
Joanna Gurtowska
Ariel Biernacki
Edyta Molga
Pawel Tomasz Wojcik
Agata WOJCIECHOWSKA
Ewa Leszczynska-Ambroziewicz
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.)
Polska Wytwornia Papierow Wartosciowych SA
Original Assignee
Polska Wytwornia Papierow Wartosciowych SA
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=57821903&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP3342601(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Polska Wytwornia Papierow Wartosciowych SA filed Critical Polska Wytwornia Papierow Wartosciowych SA
Priority to SI201730056T priority Critical patent/SI3342601T1/sl
Priority to RS20190658A priority patent/RS58978B1/sr
Priority to PL17210769T priority patent/PL3342601T3/pl
Publication of EP3342601A1 publication Critical patent/EP3342601A1/de
Application granted granted Critical
Publication of EP3342601B1 publication Critical patent/EP3342601B1/de
Priority to HRP20190984TT priority patent/HRP20190984T1/hr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/382—Special inks absorbing or reflecting infrared light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
    • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
    • G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
    • G07D7/12—Visible light, infrared or ultraviolet radiation
    • G07D7/1205—Testing spectral properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects

Definitions

  • the disclosure relates to security documents, in particular comprising a substrate layer with a printed security feature.
  • Security documents comprise various security features that make them difficult to be copied and falsified.
  • the security features may, for example, have a form of an imprint on a substrate of the document, comprising various digits, letters or other graphical symbols.
  • the security features may be permanent (i.e. the same for a group of documents) or personalized (i.e. individual for each document).
  • anti-stokes pigments which exhibit up-conversion luminescence - they are invisible for human eye in the visible light, but when excited by infrared light in the range of 900-1000nm they become visible in a specified colour, which depends on the pigment structure and its chemical composition.
  • the up-conversion luminescence occurs for up-conversion of luminescent pigments, when the excited electron in the pigment particle absorbs another energy quantum in the form of a photon, which results in additional excitation of the electron (it is transferred to an even higher energy band).
  • the excited electron subsequently returns to its base state, it emits a photon of energy which is the sum of the energy of both absorbed photons, decreased by the energy of the rotational-vibrational excitation of the pigment particle. Therefore, the energy emitted by the pigment particle results in radiation (electromagnetic wave) of a wavelength shorter than the wavelength of the absorbed radiation. Therefore, the emitted radiation is shifted towards higher frequencies.
  • the emitted radiation may be in the visible light spectrum.
  • the up-conversion luminescence is observed for some pigments having a crystal structure which are doped with ions of rare earth chemical elements: lanthanides, i.e. chemical elements with an atomic number between 59 and 71 (Ce - Lu).
  • a PCT patent application WO9513597A2 discloses a copy protection device that comprises a marking defined by a pair of inks which present a continuous, substantially plain coloured area when viewed and illuminated under visible light, but when the area is scanned at and/or illuminated under at least one wavelength outside the visible wavelength range, a pattern is generated which is detectable.
  • a US patent application US2011298204A1 discloses a a security mark with visible and hidden portions. Each first mark constituent is visible in a first lighting condition and is detectable in a second lighting condition; each second mark constituent is hidden in the first lighting condition and is detectable in the second lighting condition; each third mark constituent is visible in the first lighting condition and is hidden in the second lighting condition.
  • the first lighting condition is visible light and the second lighting condition is IR or UV light.
  • a PCT patent application WO2004050376A1 discloses a security device that comprises two or more regions, wherein each region contains a material or combination of materials wherein the two or more regions exhibit substantially the same visible appearance under first viewing conditions and different visible appearances under second viewing conditions.
  • the second viewing conditions comprise a combination of a) visible light and b) substantially any UV wavelength.
  • the different visibility of the areas in the IR region is due to different absorption spectrum of the inks used in the wavelength outside the visible wavelength range.
  • the prior art inks may have absorption spectra as shown in Fig. 4A .
  • a security document comprising a substrate with a printed security feature, which may take advantage of the up-conversion luminescence phenomenon, for securing the document against forgery and allowing an unequivocal and simple procedure for verification of the authenticity of the document.
  • the object of the invention is a security document comprising a substrate layer with a printed security feature comprising a first area and a second area, wherein in both areas the security feature is visible under visible light in a basic colour, characterized in that when excited with infrared light, the first area is visible in visible light in a first colour and the second area is visible in visible light in a second colour different than the first colour, wherein the security feature is a print layer made of a composition comprising, in the first area, a first additional up-conversion luminescence pigment excitable by the infrared light, and in the second area a second additional up-conversion luminescence pigment excitable by the infrared light, wherein the second additional pigment is different than the first additional pigment.
  • the security feature may be a print layer made of a composition comprising, in the first area and in the second area, a basic pigment visible in visible light.
  • the film-forming compositions of the first area and the second area may have substantially the same absorption spectra across the visible and infrared wavelengths.
  • the difference ⁇ E 1-2 between the first and the second colour in a CIELab space may be equal to at least 5.
  • the difference difference ⁇ E 1-B between the first colour and the basic colour, as well as the difference ⁇ E 2-B between the second colour and the basic colour may be equal to at least 5.
  • the first area may be located on the substrate layer in a distance from the second area.
  • the first area on the substrate layer may be adjacent to the second area.
  • the first area on the substrate layer may overlap, at least partially, the second area.
  • the security feature may be located between two layers of a substrate.
  • a security document 10 shown in a cross-section in the first embodiment in Fig. 1A , comprises a substrate layer 12 with a print layer 11 applied thereon.
  • the security document shown in a cross-section in the second embodiment in Fig. 1B differs from the first embodiment from Fig. 1A in that the print layer 11 is located between two layers of the substrate material 12, 13 - for example, it is printed on one of the layers 12 and subsequently covered with the second layer 13, wherein the two layers are subsequently laminated with each other.
  • the substrate layer 12, 13 may be made of various materials, including a single material or more than one type of material. It may have a form of a single layer, a laminate or a composite material.
  • the substrate layer 12, 13 may be made of paper or thermoplastics or thermosetting plastics such as: polycarbonate (PC), polyethylene (PE), polypropylene (PP), acrylonitrile-butadienestyrene (ABS), poly(methyl methacrylate) (PMMA), poly(styrene-co-acrylonitrile) (SAN), polyvinyl chloride (PVC) or various kinds of resins, for example, phenolic, or phenol-formaldehyde resins.
  • PC polycarbonate
  • PE polyethylene
  • PP polypropylene
  • ABS acrylonitrile-butadienestyrene
  • PMMA poly(methyl methacrylate)
  • SAN poly(styrene-co-acrylonitrile)
  • PVC polyvinyl chloride
  • resins
  • the print layer 11 forms a security feature for the document 10.
  • the print layer 11 is made of a film-forming composition, which may be applied to the substrate 12 by means of various techniques, such as: inkjet printing, offset printing, intaglio printing or screen printing.
  • the print layer comprises a first area 11a and a second area 11b.
  • the first area 11a may be applied on the substrate 12 in a distance from the second area 11b.
  • the first area 11a may be adjacent to the second area 11b.
  • the first area 11a may partially overlap with the second area 11b.
  • the areas 11a, 11b may form various shapes, such as graphical symbols, letters or digits.
  • the print layer 11 is made of a pigmented film-forming composition, such as a paint, lacquer, enamel or ink.
  • the composition includes pigments visible in a visible light and pigments excited by an infrared light.
  • Both areas 11a, 11b comprise a basic pigment visible in the visible light (VIS).
  • the first area 11a comprises a first additional up-conversion luminescence pigment excitable by infrared light (IR)
  • the second area 11b comprises a second additional up-conversion luminescence pigment excitable by infrared light (IR).
  • the first additional pigment is different than the second additional pigment.
  • the pigments are uniformly distributed in the areas 11a, 11b, such that the areas 11a, 11b are visible in the visible light (VIS) as surfaces having a uniform colour.
  • VIS visible light
  • the security print layer 11 when the security print layer 11 is observed in the visible light, the same basic colour B is visible in both areas 11a, 11b, wherein the colour shade depends on the basic pigment used.
  • the security print layer 11 when the security print layer 11 is excited by infrared light, the first area 11a is visible in the visible light in the first colour (1), depending on the first additional pigment used, different than the second colour (2) which is visible on the second area 11b, depending on the second additional pigment used. This is schematically shown in Fig. 3 .
  • the first and the second additional pigments are preferably selected such that the first and the second colour, in which these pigments are visible in visible light when excited by infrared light, are distinctly different from each other.
  • the difference ⁇ E 1-2 between the first and the second colour in a CIELab space is equal to at least 5, and more preferably to at least 10.
  • ⁇ E ⁇ L 2 + ⁇ a 2 + ⁇ b 2
  • L brightness (luminance)
  • a - colour from green to magenta b - colour from blue to yellow.
  • the CIELAB definition provided above is defined for example by CIE publication 15.2 (1986) and ISO 11664-4:2008.
  • the first and the second additional pigment are preferably selected such that the first and the second colour are distinctly different from the basic colour.
  • the difference ⁇ E 1-B between the first colour and the basic colour, as well as the difference ⁇ E 2-B between the second colour and the basic colour is equal to at least 5 and more preferably to at least 10.
  • the additional up-conversion luminescence pigments may be based on compounds having a matrix in a form of a crystalline lattice doped with trivalent rare earth elements including: Ho 3+ , Er 3+ , Gd 3+ , Yb 3+ , ions of alkaline earth elements: Ca 2+ , Sr 2+ , Ba 2+ or particular transition metals, such as Zr4+, Ti4+, whereas for creation of matrices of these pigments, particular halides may be used: NaYF 4 , YF 3 , LaF 3 , oxides for example Y 2 O 3 , ZrO 2 or sulfoxides Y 2 O 2 S, La 2 O 2 S.
  • the first and second areas preferably have substantially the same absorption spectra, preferably in the whole wavelength range. In particular, they have the same absorption spectra in the visible range and in the infrared range as shwon in Fig. 4B , which presents absorption spectra for 4 different film-forming compositions.
  • the term "substantially” is to be understood that the reflectance measured by the spectofotometer in one area is different from the reflectance in another area not more than 10%, and more preferably not more than 5% of the absolute value (for example, as shown in Fig. 4B , for 950 nm the lowest reflectance value is about 70% for one composition and the highest value is about 73% for another composition, therefore the difference is 3%).
  • the areas may be illuminated by a laser or a laser diode of a particular wavelength, such as 980 nm, which results in the excitation of the up-conversion luminescence pigments, such that they become visible in visible light at different colours.
  • a laser or a laser diode of a particular wavelength such as 980 nm
  • the areas when the areas are not illuminated by the particular wavelength that excites the up-conversion pigments, the areas have the same visibility across all wavelengths, according to the absorption spectra shown in Fig. 4B , therefore there is no change in colour visible, whether the areas are observed under visible or infrared light.
  • the film-forming compositions for the areas 11a, 11b comprise a color base (defining the basic colour) and an additive of the up-conversion component, which has the same basic colour for visible light as the color base and further comprises a particular up-conversion luminescence pigment.
  • the amount of the up-conversion component may be different, depending on the visibility of the component.
  • additional components may be used for the composition, such as diluents, to obtain compositions of uniform colour and structure.
  • compositions can be used:
  • the security document 10 may have a form of a banknote, an identity card, a driving license, a passport, a credit card, a diploma, a certificate, or any other known security document.
  • the utility of the security document results in that the security feature is visible for a naked human eye as a printed area having a first colour in the visible light, whereas when excited by the infrared light in the range of 900-1000nm it is visible as a two-colour or a multicolour area. This allows fast and convenient localization of the security feature on the document substrate, in the visible light and subsequently verification of the authenticity of the document by illumination of the security feature with infrared light.

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  • Toxicology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Printing Methods (AREA)
  • Credit Cards Or The Like (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Graft Or Block Polymers (AREA)

Claims (9)

  1. Sicherheitsdokument, umfassend eine Substratschicht (12) mit einem gedruckten Sicherheitsmerkmal (11) umfassend einen ersten Bereich (11a) und einen zweiten Bereich (11b), wobei in beiden Bereichen (11a, 11b) das Sicherheitsmerkmal (11) unter sichtbarem Licht in einer Grundfarbe (P) sichtbar ist, wobei bei Erregung mit Infrarotlicht der erste Bereich (11a) in sichtbarem Licht in einer ersten Farbe (1) sichtbar ist und der zweite Bereich (11b) in sichtbarem Licht in einer zweiten Farbe (2) sichtbar ist, die sich von der ersten Farbe (1) unterscheidet, dadurch gekennzeichnet, dass das Sicherheitsmerkmal (11) eine Druckschicht aus einer Zusammensetzung umfassend, im ersten Bereich (11a), ein erstes zusätzliches, durch das Infrarotlicht erregbares Aufwärtskonversions-Luminezenzpigment und, im zweiten Bereich (11b), ein zweites zusätzliches, durch das Infrarotlicht erregbares Aufwärtskonversions-Luminezenzpigment ist, wobei sich das zweite zusätzliche Pigment vom ersten zusätzlichen Pigment unterscheidet.
  2. Sicherheitsdokument nach Anspruch 1, wobei das Sicherheitsmerkmal (11) eine Druckschicht aus einer Zusammensetzung umfassend, im ersten Bereich (11a) und im zweiten Bereich (11b), ein in sichtbarem Licht sichtbares Grundpigment ist.
  3. Sicherheitsdokument nach einem der vorhergehenden Ansprüche, wobei die filmbildenden Zusammensetzungen des ersten Bereichs (11a) und des zweiten Bereichs (11b) im Wesentlichen die gleichen Absorptionsspektren über die sichtbaren und infraroten Wellenlängen aufweisen.
  4. Sicherheitsdokument nach einem der vorhergehenden Ansprüche, wobei die Differenz ΔE1-2 zwischen der ersten und zweiten Farbe in einem CIELab-Raum gleich mindestens 5 ist.
  5. Sicherheitsdokument nach einem der vorhergehenden Ansprüche, wobei die Differenz ΔE1-B zwischen der ersten Farbe und der Grundfarbe sowie die Differenz ΔE2-B zwischen der zweiten Farbe und der Grundfarbe gleich mindestens 5 ist.
  6. Sicherheitsdokument nach einem der vorhergehenden Ansprüche, wobei sich der erste Bereich (11a) auf der Substratschicht (12) in einem Abstand vom zweiten Bereich (11b) befindet.
  7. Sicherheitsdokument nach einem der vorhergehenden Ansprüche, wobei der erste Bereich (11a) auf der Substratschicht (12) an den zweiten Bereich (11b) angrenzt.
  8. Sicherheitsdokument nach einem der vorhergehenden Ansprüche, wobei sich der erste Bereich (11a) auf der Substratschicht (12) den zweiten Bereich (11b) zumindest teilweise überlappt.
  9. Sicherheitsdokument nach einem der vorhergehenden Ansprüche, wobei sich das Sicherheitsmerkmal (11) zwischen zwei Schichten eines Substrats (12, 13) befindet.
EP17210769.0A 2017-01-02 2017-12-28 Sicherheitsdokument Revoked EP3342601B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SI201730056T SI3342601T1 (sl) 2017-01-02 2017-12-28 Varnostni dokument
RS20190658A RS58978B1 (sr) 2017-01-02 2017-12-28 Zaštićeni dokument
PL17210769T PL3342601T3 (pl) 2017-01-02 2017-12-28 Dokument zabezpieczony
HRP20190984TT HRP20190984T1 (hr) 2017-01-02 2019-05-30 Zaštićeni dokument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17461501 2017-01-02

Publications (2)

Publication Number Publication Date
EP3342601A1 EP3342601A1 (de) 2018-07-04
EP3342601B1 true EP3342601B1 (de) 2019-03-27

Family

ID=57821903

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17210769.0A Revoked EP3342601B1 (de) 2017-01-02 2017-12-28 Sicherheitsdokument

Country Status (12)

Country Link
EP (1) EP3342601B1 (de)
CY (1) CY1121774T1 (de)
DK (1) DK3342601T3 (de)
ES (1) ES2731365T3 (de)
HR (1) HRP20190984T1 (de)
HU (1) HUE044906T2 (de)
LT (1) LT3342601T (de)
PL (1) PL3342601T3 (de)
PT (1) PT3342601T (de)
RS (1) RS58978B1 (de)
SI (1) SI3342601T1 (de)
TR (1) TR201907834T4 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019210762A1 (de) * 2019-07-19 2021-01-21 Bundesdruckerei Gmbh Verfahren zur Auswertung von flüchtigen nicht resistenten Anti-Stokes-Lumineszenzstoffen auf Wertdokumenten

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2258659A (en) 1991-08-14 1993-02-17 De La Rue Thomas & Co Ltd An anti-stokes luminescent material
EP0595583A1 (de) 1992-10-26 1994-05-04 Canon Kabushiki Kaisha Aufzeichnungsmedium für nicht sichtbare Informationen und Gerät zum Lesen derselben
WO1995013597A2 (en) 1993-11-12 1995-05-18 Thomas De La Rue Limited Preventing unauthorized copying of documents
WO1997010958A1 (en) 1995-09-20 1997-03-27 De La Rue International Limited Security document and method for its manufacture
DE19860093A1 (de) 1998-12-23 2000-07-06 Giesecke & Devrient Gmbh Echtheitsmerkmalskombination für Wertdokumente
DE10113266A1 (de) 2001-03-16 2002-09-19 Bundesdruckerei Gmbh Wert-und/oder Sicherheitsdokument
WO2003072682A1 (en) 2002-02-27 2003-09-04 Honeywell Speciality Chemicals Seelze Gmbh Anti-stokes fluorescent material composition
WO2004050376A1 (en) 2002-12-04 2004-06-17 De La Rue International Limited Security device and its production method
DE60302086T2 (de) 2002-03-19 2006-07-20 Dai Nippon Printing Co., Ltd. Sicherheitselemente, wärmeempfindliches Übertragungsblatt, Zwischenmedium für Übertragungsaufzeichnungsverfahren und Verfahren zur Herstellung eines Sicherheitselementes
DE60210378T2 (de) 2001-08-14 2006-10-19 Banque De France Sicherheitsmarkierungsmittel
US20070044679A1 (en) 2005-08-30 2007-03-01 Petrik Viktor I White-fluorescent anti-stokes compositions and methods
US20110298204A1 (en) 2010-06-07 2011-12-08 Xerox Corporation Document security by aligning visible and hidden marks
US20130221656A1 (en) 2010-08-09 2013-08-29 Dai Nippon Printing Co., Ltd. Light-emitting medium
US20160176224A1 (en) 2013-05-13 2016-06-23 Kba- Notasys Sa Printed security feature, object comprising such a printed security feature, and process of producing the same

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2258659A (en) 1991-08-14 1993-02-17 De La Rue Thomas & Co Ltd An anti-stokes luminescent material
EP0595583A1 (de) 1992-10-26 1994-05-04 Canon Kabushiki Kaisha Aufzeichnungsmedium für nicht sichtbare Informationen und Gerät zum Lesen derselben
WO1995013597A2 (en) 1993-11-12 1995-05-18 Thomas De La Rue Limited Preventing unauthorized copying of documents
WO1997010958A1 (en) 1995-09-20 1997-03-27 De La Rue International Limited Security document and method for its manufacture
DE19860093A1 (de) 1998-12-23 2000-07-06 Giesecke & Devrient Gmbh Echtheitsmerkmalskombination für Wertdokumente
DE10113266A1 (de) 2001-03-16 2002-09-19 Bundesdruckerei Gmbh Wert-und/oder Sicherheitsdokument
DE60210378T2 (de) 2001-08-14 2006-10-19 Banque De France Sicherheitsmarkierungsmittel
WO2003072682A1 (en) 2002-02-27 2003-09-04 Honeywell Speciality Chemicals Seelze Gmbh Anti-stokes fluorescent material composition
DE60302086T2 (de) 2002-03-19 2006-07-20 Dai Nippon Printing Co., Ltd. Sicherheitselemente, wärmeempfindliches Übertragungsblatt, Zwischenmedium für Übertragungsaufzeichnungsverfahren und Verfahren zur Herstellung eines Sicherheitselementes
WO2004050376A1 (en) 2002-12-04 2004-06-17 De La Rue International Limited Security device and its production method
US20070044679A1 (en) 2005-08-30 2007-03-01 Petrik Viktor I White-fluorescent anti-stokes compositions and methods
US20110298204A1 (en) 2010-06-07 2011-12-08 Xerox Corporation Document security by aligning visible and hidden marks
US20130221656A1 (en) 2010-08-09 2013-08-29 Dai Nippon Printing Co., Ltd. Light-emitting medium
US20160176224A1 (en) 2013-05-13 2016-06-23 Kba- Notasys Sa Printed security feature, object comprising such a printed security feature, and process of producing the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
RUDOLF L. VAN RENESSE, OPTICAL DOCUMENT SECURITY, pages 97 - 102, 126-127, XP055667691, ISBN: 1-58053-258-6

Also Published As

Publication number Publication date
SI3342601T1 (sl) 2019-08-30
HRP20190984T1 (hr) 2019-08-23
EP3342601A1 (de) 2018-07-04
TR201907834T4 (tr) 2019-06-21
RS58978B1 (sr) 2019-08-30
ES2731365T3 (es) 2019-11-15
HUE044906T2 (hu) 2019-11-28
LT3342601T (lt) 2019-07-10
CY1121774T1 (el) 2020-07-31
PT3342601T (pt) 2019-06-11
PL3342601T3 (pl) 2019-09-30
DK3342601T3 (da) 2019-06-11

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