PL2088003T3 - Colour switching - Google Patents

Colour switching

Info

Publication number
PL2088003T3
PL2088003T3 PL08101159T PL08101159T PL2088003T3 PL 2088003 T3 PL2088003 T3 PL 2088003T3 PL 08101159 T PL08101159 T PL 08101159T PL 08101159 T PL08101159 T PL 08101159T PL 2088003 T3 PL2088003 T3 PL 2088003T3
Authority
PL
Poland
Prior art keywords
indicia
pattern
printing
colours
transparent material
Prior art date
Application number
PL08101159T
Other languages
Polish (pl)
Inventor
Monique Golaire
Maryke Degryse
Nathalie Paquot
Braeckel Paul Van
Beni Haeyaert
Original Assignee
Nat Bank Of Belgium
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nat Bank Of Belgium filed Critical Nat Bank Of Belgium
Publication of PL2088003T3 publication Critical patent/PL2088003T3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/148—Transitory images, i.e. images only visible from certain viewing angles

Landscapes

  • Printing Methods (AREA)
  • Push-Button Switches (AREA)
  • Vehicle Body Suspensions (AREA)
  • Credit Cards Or The Like (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Luminescent Compositions (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

The invention relates to a method for printing one or more security items (10) on a substrate of which at least a part is made of a transparent material, wherein the method comprises the steps of - printing a first pattern of indicia (1) in at least two colours (Y, M, C) on one side of the said transparent material, this first pattern of indicia (1) being provided such that a partitive mixing of colours occurs between the colours (Y, M, C) of these indicia of the first pattern (1); - printing a second pattern of indicia (2) on the opposite side of the said transparent material, such that particular indicia of the first pattern (1) are at least partially overlapped by the indicia of the second pattern (2); - the overlapping indicia of the second pattern (2) having a filtering or masking function with relation to the overlapped indicia of the first pattern (1) such that, because of the parallax effect due to the thickness of the substrate, the partitive colour mixing of the indicia of the first pattern (1) changes with a changing angle of view resulting in a change of the overall colour of the indicia. The invention furthermore relates to a security item (10) printed on a security document according to such a method.
PL08101159T 2008-01-31 2008-01-31 Colour switching PL2088003T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08101159A EP2088003B1 (en) 2008-01-31 2008-01-31 Colour switching

Publications (1)

Publication Number Publication Date
PL2088003T3 true PL2088003T3 (en) 2011-06-30

Family

ID=39535817

Family Applications (1)

Application Number Title Priority Date Filing Date
PL08101159T PL2088003T3 (en) 2008-01-31 2008-01-31 Colour switching

Country Status (5)

Country Link
EP (1) EP2088003B1 (en)
AT (1) ATE500069T1 (en)
DE (1) DE602008005253D1 (en)
ES (1) ES2359536T3 (en)
PL (1) PL2088003T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201007042D0 (en) † 2010-04-28 2010-06-09 Rue De Int Ltd Printed security feature and method of manufacture
RU2605074C1 (en) * 2015-06-26 2016-12-20 Акционерное общество "Гознак" (АО "Гознак") Protective element for sheet printing product
CN107499013A (en) * 2017-09-26 2017-12-22 厦门汉盾光学科技有限公司 A kind of security article and preparation method thereof
JP7204131B2 (en) * 2019-11-06 2023-01-16 独立行政法人 国立印刷局 transparent print
JP7204130B2 (en) * 2019-11-06 2023-01-16 独立行政法人 国立印刷局 Transmission latent image print
US12561853B2 (en) 2023-08-28 2026-02-24 Xerox Corporation Digital (on screen) color change ink

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4226906A1 (en) * 1992-08-14 1994-02-17 Basf Magnetics Gmbh Anti-copy film or layer for documents
DE4236563A1 (en) * 1992-10-29 1994-05-05 Basf Magnetics Gmbh Anti-copy film or layer
GB9612496D0 (en) * 1996-06-14 1996-08-14 De La Rue Thomas & Co Ltd Security device
EP0967091A1 (en) * 1998-06-26 1999-12-29 Alusuisse Technology & Management AG Object with optical effect

Also Published As

Publication number Publication date
ES2359536T3 (en) 2011-05-24
ATE500069T1 (en) 2011-03-15
EP2088003A1 (en) 2009-08-12
EP2088003B1 (en) 2011-03-02
DE602008005253D1 (en) 2011-04-14

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