WO1995016574A1 - Element optique de securite visuellement identifiable pour papiers-valeurs - Google Patents

Element optique de securite visuellement identifiable pour papiers-valeurs Download PDF

Info

Publication number
WO1995016574A1
WO1995016574A1 PCT/DE1994/001426 DE9401426W WO9516574A1 WO 1995016574 A1 WO1995016574 A1 WO 1995016574A1 DE 9401426 W DE9401426 W DE 9401426W WO 9516574 A1 WO9516574 A1 WO 9516574A1
Authority
WO
WIPO (PCT)
Prior art keywords
security element
areas
element according
security
partial
Prior art date
Application number
PCT/DE1994/001426
Other languages
German (de)
English (en)
Inventor
Jürgen Herrmann
Werner Reinhart
Original Assignee
Leonhard Kurz Gmbh & Co.
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 Leonhard Kurz Gmbh & Co. filed Critical Leonhard Kurz Gmbh & Co.
Priority to AU11051/95A priority Critical patent/AU1105195A/en
Publication of WO1995016574A1 publication Critical patent/WO1995016574A1/fr

Links

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
    • B42D25/328—Diffraction gratings; Holograms

Definitions

  • the invention relates to visually identifiable, optical security elements for documents of value, e.g. Banknotes, official credit cards, ID cards or check documents, or other objects to be secured, which include at least two neighboring sub-areas that appear differently structured when illuminated and that can be identified by the unarmed eye.
  • documents of value e.g. Banknotes, official credit cards, ID cards or check documents, or other objects to be secured, which include at least two neighboring sub-areas that appear differently structured when illuminated and that can be identified by the unarmed eye.
  • optical security elements which change their appearance depending on the viewing angle or the lighting conditions, are known primarily for credit cards, but also for other areas of application. So far, the aim has been to use as many different optical effects as possible in a security element, e.g. Color changes, movement effects, holographic effects, three-dimensional manifestations etc., summarized in one motif to counterfeit the
  • OVDs overloaded with information are reproduced in a deceptive manner even under reproductions with color copiers or printing technology methods for the layperson under the aforementioned conditions.
  • the security effect actually achieved is therefore comparatively low despite the considerable effort involved in the production of the OVDs.
  • the invention is therefore based on the object of being visually identifiable, optical and in terms of
  • variable security element in such a way that it can be easily and in particular quickly and under unfavorable by a layperson
  • Lighting conditions can be checked for authenticity, with the use of special instruments or
  • the partial areas of the security element are structured in such a way that, for an observer, adjacent partial areas appear to be clearly contrasting with one another, or areas that appear homogeneous are reproduced in a counterfeit manner in the case of counterfeiting, whereby in addition, each sub-area is structured in a uniform manner.
  • the security element comprises only two correspondingly clearly distinguishable, in each case uniform partial areas, so that it would be sufficient for the user if he noted the optical effects occurring in two partial areas.
  • the invention is therefore based on the basic consideration that, for the purpose of the invention aimed for simple and rapid identification, even under unfavorable lighting conditions and without observing special test conditions, it is essential to be limited to a comparatively small number of different and clear optical effects, whereby the individual optical effects are each provided in certain sub-areas of the security element, which are sufficiently large and, if possible, have a certain shape so that the viewer can recognize and distinguish them quickly and easily. Identification is further facilitated by the fact that only one uniform structure is provided in each of the partial areas that clearly contrast with one another or contrast with reproduction.
  • At least a partial area of the security element has a light-diffractive and / or refractive structure (diffraction structure), e.g. a hologram,
  • Interference pattern diffraction grating or the like.
  • the diffraction structure can expediently be designed such that when the illumination or
  • Viewing angle a defined, as clear as possible color change is generated.
  • the diffraction structure causes movement effects, for example color changes or changes in geometric structures, when the illumination or viewing angle changes.
  • the diffraction structure it is also possible for the diffraction structure to be composed of such structural elements which, for example in a partial area, each have two or more different geometric figures, depending on a defined viewing angle, for example two different letters or a change between a letter or a number on the one hand and the Representation of a head etc. on the other hand. What is important in this Context, however, that the changes dependent on the illumination or viewing angle are such that, regardless of the actual viewing angle, there is always the contrast impression between adjacent partial areas.
  • At least one partial area has a matt structure, whereby both chromatic and achromatic matt structures can be provided.
  • a further design option for the partial areas is that at least one partial area is not visibly structured, the at least one partial area expediently being glossy, preferably highly reflective metallic. It is precisely the contrast between a highly reflective and thus apparently the same at different viewing or lighting angles on the one hand and an optically contrasting changing its appearance depending on the lighting or viewing angle is a characteristic feature that the user of the document of value can easily memorize .
  • a transparent colored lacquer which also serves as a protective lacquer, ie covers the structure in such a way that scratching or changing of the structure, whether intentionally or unintentionally, for example through use, is prevented, at least in some areas is provided with a diffraction or matt structure.
  • each partial area has a minimum diameter or minimum dimensions in each direction of at least 0.3 mm, preferably of at least 2 mm.
  • the recognizability or identification of a security element according to the invention is further facilitated if a first partial area surrounds at least one further partial area in a frame-like manner, advantageously the . frame-like first partial area surrounds at least two further partial areas spaced apart from one another.
  • the procedure is advantageously such that the frame-like first partial area is glossy and the further partial area (s) has (have) a diffraction or matt structure.
  • the reflective or glossy frame draws the viewer's attention particularly to the partial areas arranged within the frame.
  • At least one partial area is formed by a thin-film element, whereby thin-film element is to be understood to mean that a transparent, generally colorless layer is provided in this area, the thickness of which is so small that interference phenomena occur .
  • the layer must in any case be thinner than a quarter of the wavelength of the light used for viewing.
  • At least a partial area of the security element is transparent, there is also a special optical effect which is easily perceptible to the viewer.
  • one has the advantage that the area within the security element
  • the surface of the document of value to be secured for example a correspondingly printed paper, shines through, a design that is very difficult to achieve in an attempt to counterfeit.
  • At least one partial area is designed differently from the adjacent partial area (s) by removing a metallization covering several partial areas in certain areas. The path of demetalization will then be followed if either transparent partial areas are aimed for or a diffraction structure provided over the entire surface of the security element is divided into different partial areas and for this purpose the diffraction structure is to be made invisible in some areas.
  • the document of value can be further secured if the
  • Security element is provided with at least one additional security indicator.
  • an additional security identifier a print or a corresponding embossment that at least partially encompasses all partial areas can expediently be provided, this pressure usually after the application of the
  • special colors are advantageously used, for example mineral or metallic effect colors, liquid crystal colors or coatings, IR and / or UV-active colors, daylight fluorescent colors or iridescent colors.
  • Another possibility for generating an additional security identifier is to provide a special, difficult to falsify design of the diffraction structure of at least a partial area of the security element.
  • the aim of the security element according to the invention is to use essentially only a few, for example only two, selected effects with a high level of attention.
  • These effects which are as clear as possible with regard to their optical effect, are applied to the security elements according to the invention in such a way that at least individual elements even under unfavorable lighting conditions and with any
  • the security element in principle, it is possible to manufacture the security element according to the invention in a wide variety of ways and in particular to form it on a value document. With regard to handling and attachment to the document of value, however, it is particularly expedient if, according to the invention, the security element is part of an embossing or laminating film which has an adhesive layer for fixing the security element to the document of value or object. Manufacturing processes for such embossing or laminating films are generally known and are therefore not to be explained in more detail here. It is also readily clear to the person skilled in the art how, for example, hot stamping foils have to be constructed if certain optical effects are to be achieved highly reflective surfaces or surfaces with a diffraction structure should be present.
  • Figure 1 shows a part of a security with a first
  • Figure 2 shows a section along line II-II in Figure 1 and Figure 3 shows part of a security with a second
  • FIG. 1 shows a part of a document of value 1, for example a security such as a bank note etc., on which a security element, denoted overall by 2, is attached in accordance with the invention.
  • the visually identifiable, optical security element 2 essentially comprises three partial areas 2a, 2b and 2c, these partial areas being dimensioned such that they have minimum dimensions in each direction or a minimum diameter of at least 0.3 mm, but preferably of have at least 2 mm.
  • the frame-like partial area 2a has a frame width a of at least 0.3 mm, but expediently of at least 2 mm has.
  • the subregions 2b and 2c are correspondingly at least 0.3 mm, but preferably at least 2 mm wide and high.
  • the frame-like first partial region 2a in the exemplary embodiment in FIG. 1 is reflective, for example a high-gloss metallization.
  • the subregions 2b and 2c have different surfaces, each having a diffractive or refractive optical effect.
  • the surface of the sub-area 2b can be formed by a diffraction structure that produces a color change
  • the surface of the sub-area 2c can be structured in such a way that when the illumination or viewing angle changes, a color change occurs, for example in the sense of a beam rotation, as is particularly the case of decorative films has been known for a long time.
  • additional structures 2d and 2e in the form of the letters "A” and "X” are arranged within the partial areas 2b and 2c, these structures 2d and 2e differing in surface quality from the rest of the partial areas 2b and 2b, respectively. 2c differentiate.
  • the surfaces of the letters “X” and “A” can have a matt structure.
  • the attachment of letters or the like. is particularly useful if the document of value is a banknote. In this case, the respective short designation of the relevant currency can be used instead of the letters "A" and "X" are, for example for Deutsche Mark the letter combination "DM".
  • the frame-like partial area 2a surrounds the partial areas 2b and 2c such that there is a small distance 3 between the partial area 2a and the partial areas 2b and 2c.
  • the partial areas 2b and 2c are separated from one another by a small distance 4, the security element having no surface structure in the distance areas 3 and 4. Rather, in the exemplary embodiment shown, it is transparent in the partial areas 3 and 4, so that the surface 5 of the value document 1 shines through in the area of the distances 3 and 4 within the security element 2, a circumstance which helps to improve the security effect of the security element .
  • the security element 2 of the exemplary embodiment in FIGS. 1 and 2 is, as is particularly clear from FIG. 2, part of a hot stamping foil and is applied using a corresponding technique, i.e. transferred to the surface 5 of the document of value 1 by means of a stamp under the action of heat and pressure from a carrier 6 shown in broken lines in FIG.
  • the structure of the security element 2 can also be seen in greater detail from FIG.
  • this comprises a transparent, deformable protective lacquer layer 7, a lacquer layer 8 and an adhesive layer 9 for fixing on the surface 5 of the security 1.
  • the corresponding diffraction or matt structures are formed at the interface 10 between the transparent, deformable protective lacquer layer 7 and the lacquer layer 8, these structures being produced by appropriately embossing the protective lacquer layer 7 as long as it is still deformable.
  • FIG. 2 clearly shows that there are diffraction structures 11 in the region 2b in the form of essentially parallel lines of a certain line frequency and depth.
  • a matt structure 12 is produced, which ensures a diffuse reflection of light.
  • the surface 10 between the lacquer layers 7 and 8 is smooth.
  • a metallization 13 is provided between the two lacquer layers 7 and 8, the metallization where the distance 3 between the frame 2a and the partial areas 2b and 2c is to be generated.
  • FIG. 2 also indicates that the protective lacquer layer 7 can be colored in the section 14 corresponding to the partial area 2b, although the coloring must take place in such a way that the protective lacquer layer 7 remains transparent, in order to prevent the security element 2 applied to the document of value 1 to be able to recognize the individual partial areas 2a, 2b and 2c perfectly.
  • the transparent coloring of the protective lacquer layer 7 in the area 14 offers the possibility of the two partial areas 2b and 2c contrast in color to each other or to the frame 2a, but also to the surface 5 of the document of value 1.
  • the hot stamping foil which is used to produce the security element 2 on the value document 1 according to FIGS. 1 and 2, is produced in a manner known per se.
  • a transparent protective lacquer layer 7 is first applied to a suitable carrier 6 in a customary, preferably printing process, the
  • the metal layer 13 After the metal layer 13 has been applied, it is then removed in the region of the distances 3 and 4, for example by washing out the water-soluble lacquer layer and correspondingly detaching the metal layer in these regions. Now the additional lacquer layer 8 and, if necessary, the adhesive layer 9 is applied to complete the hot stamping foil.
  • the security element 20 consists of four substantially identical partial areas 20a, 20b, 20c and 20d, which each have only different surface structures, which is to be indicated by the different hatching.
  • "Surface structures” is not only to be understood as a spatial design as shown in FIG. 2.
  • the “surface structures” of the partial areas 20a to 20d can also be produced, for example, only by different coloring, by using correspondingly thin lacquer layers, by different reflectivities, etc. However, it is particularly favorable in the case of an arrangement according to FIG. 3 if the partial areas 20a to 20d show, for example, targeted color changes, for example in the sense of a color shift from left to right and in the opposite direction from right to left when the viewing angle changes.
  • an additional security identifier is now provided in the form of a pressure 21 that overlaps all sub-areas 20a to 20d of the security element 20, the expedient procedure being such that the pressure 21 is formed by self-contained and uninterrupted lines, which in turn is a Counterfeiting is difficult, since continuous printing makes it practically impossible to cut out parts of the document of value and replace them with others.
  • An additional security label cannot only be achieved by overprinting or overprinting.
  • the security element according to the invention was essentially explained above only for securities.
  • the security element according to the invention can also be applied to other substrates, in particular plastic cards, surfaces of objects, etc., the desired advantages also being obtained in these cases.

Landscapes

  • Credit Cards Or The Like (AREA)

Abstract

Des éléments optiques de sécurité (2, 20) visuellement identifiables pour papiers-valeurs ou autres objets à sécuriser comprennent au moins deux zones partielles (2a à 2e, 20a à 20d) qui semblent avoir des structures diverses sous la lumière et qui peuvent être identifiées à l'÷il nu. Dans au moins quelques zones partielles, la structure est telle que lorsque la direction d'éclairage ou d'observation change, l'apparence de l'image se modifie. Essentiellement, les zones partielles (2a à 2e, 20a à 20d) des éléments de sécurité (2, 20) ont une structure telle que des zones partielles adjacentes (2a à 2e, 20a à 20d) ont une apparence clairement contrastée indépendamment de l'angle d'observation, alors que chaque zone partielle est structurée en soi de manière uniforme.
PCT/DE1994/001426 1993-12-18 1994-12-02 Element optique de securite visuellement identifiable pour papiers-valeurs WO1995016574A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11051/95A AU1105195A (en) 1993-12-18 1994-12-02 Visually identifiable, optical security element for security papers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4343387.1 1993-12-18
DE4343387A DE4343387A1 (de) 1993-12-18 1993-12-18 Visuell identifizierbares, optisches Sicherheitselement für Wertdokumente

Publications (1)

Publication Number Publication Date
WO1995016574A1 true WO1995016574A1 (fr) 1995-06-22

Family

ID=6505470

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1994/001426 WO1995016574A1 (fr) 1993-12-18 1994-12-02 Element optique de securite visuellement identifiable pour papiers-valeurs

Country Status (4)

Country Link
AU (1) AU1105195A (fr)
DE (1) DE4343387A1 (fr)
TW (1) TW383108U (fr)
WO (1) WO1995016574A1 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
WO2001002192A1 (fr) * 1999-06-30 2001-01-11 Securency Pty Ltd. Article de securite comportant un filtre optique de diffracton
NL1025579C2 (nl) 2004-02-26 2005-08-29 Nl Bank Nv Meerkleurige folie.
WO2005080089A1 (fr) * 2004-02-20 2005-09-01 De La Rue International Limited Dispositif de securite

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EP0756945A1 (fr) * 1995-07-31 1997-02-05 National Bank Of Belgium Protection contre le tirage coloré des documents de sécurité
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DE19716968C1 (de) * 1997-04-16 1998-12-10 Bundesdruckerei Gmbh Datenträger
US7667895B2 (en) 1999-07-08 2010-02-23 Jds Uniphase Corporation Patterned structures with optically variable effects
US6761959B1 (en) 1999-07-08 2004-07-13 Flex Products, Inc. Diffractive surfaces with color shifting backgrounds
US7047883B2 (en) 2002-07-15 2006-05-23 Jds Uniphase Corporation Method and apparatus for orienting magnetic flakes
US6987590B2 (en) 2003-09-18 2006-01-17 Jds Uniphase Corporation Patterned reflective optical structures
CA2397806C (fr) * 2000-01-21 2009-05-05 Flex Products, Inc. Dispositifs de securite variables du point de vue optique
US11768321B2 (en) 2000-01-21 2023-09-26 Viavi Solutions Inc. Optically variable security devices
DE10124221A1 (de) * 2001-05-18 2002-11-21 Giesecke & Devrient Gmbh Wertpapier und Verfahren zu seiner Herstellung
US6841238B2 (en) 2002-04-05 2005-01-11 Flex Products, Inc. Chromatic diffractive pigments and foils
US6692830B2 (en) 2001-07-31 2004-02-17 Flex Products, Inc. Diffractive pigment flakes and compositions
DE10216563B4 (de) * 2002-04-05 2016-08-04 Ovd Kinegram Ag Sicherheitselement als Photokopierschutz
DE10226115A1 (de) * 2002-06-12 2003-12-24 Giesecke & Devrient Gmbh Verfahren zum Erzeugen eines Gitterbildes, Gitterbild und Sicherheitsdokument
US7934451B2 (en) 2002-07-15 2011-05-03 Jds Uniphase Corporation Apparatus for orienting magnetic flakes
US11230127B2 (en) 2002-07-15 2022-01-25 Viavi Solutions Inc. Method and apparatus for orienting magnetic flakes
US9458324B2 (en) 2002-09-13 2016-10-04 Viava Solutions Inc. Flakes with undulate borders and method of forming thereof
US7674501B2 (en) 2002-09-13 2010-03-09 Jds Uniphase Corporation Two-step method of coating an article for security printing by application of electric or magnetic field
US8025952B2 (en) 2002-09-13 2011-09-27 Jds Uniphase Corporation Printed magnetic ink overt security image
US9164575B2 (en) 2002-09-13 2015-10-20 Jds Uniphase Corporation Provision of frames or borders around pigment flakes for covert security applications
US7063924B2 (en) 2002-12-20 2006-06-20 Eastman Kodak Company Security device with patterned metallic reflection
DE10337331A1 (de) * 2003-08-12 2005-03-17 Giesecke & Devrient Gmbh Sicherheitselement mit Dünnschichtelement
GB0326079D0 (en) 2003-11-07 2003-12-10 Rue De Int Ltd Security device
DE102004017093B4 (de) 2004-04-07 2007-09-20 Leonhard Kurz Gmbh & Co. Kg Prägefolie zur Herstellung fälschungssicherer Kraftfahrzeug-Nummernschilder und fälschungssicheres Kraftfahrzeug-Nummernschild mit einer solchen Prägefolie sowie Verwendung
CA2541568C (fr) 2005-04-06 2014-05-13 Jds Uniphase Corporation Dispositifs optiques a changement dynamique d'apparence (dacod) imprimes dans un champ magnetique mis en forme comprenant des structures de fresnel imprimables
AU2006202315B2 (en) 2005-06-17 2011-01-27 Viavi Solutions Inc. Covert security coating
CA2564764C (fr) 2005-10-25 2014-05-13 Jds Uniphase Corporation Structures optiques a motif avec fonction de securite amelioree
CA2570965A1 (fr) 2005-12-15 2007-06-15 Jds Uniphase Corporation Dispositif de securite a caracteristiques metameriques utilisant des flocons de pigments diffractifs
CA2592667C (fr) 2006-07-12 2014-05-13 Jds Uniphase Corporation Etampage d'un revetement de paillettes durcies avec effets speciaux a alignement de champ et image resultante
GB2456500B (en) 2007-10-23 2011-12-28 Rue De Int Ltd Improvements in security elements
JP2009193069A (ja) 2008-02-13 2009-08-27 Jds Uniphase Corp 光学的な特殊効果フレークを含むレーザ印刷用の媒体
EP2802450B1 (fr) 2012-01-12 2018-12-19 Viavi Solutions Inc. Objet à cadre dynamique constitué de flocons de pigment alignés
US10657853B2 (en) 2016-10-31 2020-05-19 E Ink Holdings Inc. Identifiable element, display device, method of manufacturing the same, and method of forming a display pattern
TWI625582B (zh) * 2016-10-31 2018-06-01 元太科技工業股份有限公司 識別元件、顯示器、識別元件的製造方法以及形成顯示圖案的方法

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001002192A1 (fr) * 1999-06-30 2001-01-11 Securency Pty Ltd. Article de securite comportant un filtre optique de diffracton
WO2005080089A1 (fr) * 2004-02-20 2005-09-01 De La Rue International Limited Dispositif de securite
EA009706B1 (ru) * 2004-02-20 2008-02-28 Де Ля Рю Интернэшнл Лимитед Защитное средство
CN100453338C (zh) * 2004-02-20 2009-01-21 德拉鲁国际公司 防伪装置
NL1025579C2 (nl) 2004-02-26 2005-08-29 Nl Bank Nv Meerkleurige folie.
EP1568508A1 (fr) 2004-02-26 2005-08-31 De Nederlandsche Bank N.V. Pellicule polychrome
EP1902855A2 (fr) * 2004-02-26 2008-03-26 De Nederlandsche Bank N.V. Feuille multicolore
EP1902855A3 (fr) * 2004-02-26 2010-12-22 De Nederlandsche Bank N.V. Feuille multicolore

Also Published As

Publication number Publication date
DE4343387A1 (de) 1995-06-29
TW383108U (en) 2000-02-21
AU1105195A (en) 1995-07-03

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