EP1030786A1 - Element de securite destine a un document de valeur ou a un document de securite, comportant un systeme de lamelles fractales - Google Patents

Element de securite destine a un document de valeur ou a un document de securite, comportant un systeme de lamelles fractales

Info

Publication number
EP1030786A1
EP1030786A1 EP98965625A EP98965625A EP1030786A1 EP 1030786 A1 EP1030786 A1 EP 1030786A1 EP 98965625 A EP98965625 A EP 98965625A EP 98965625 A EP98965625 A EP 98965625A EP 1030786 A1 EP1030786 A1 EP 1030786A1
Authority
EP
European Patent Office
Prior art keywords
security feature
lamellae
security
angle
fractal
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
Application number
EP98965625A
Other languages
German (de)
English (en)
Other versions
EP1030786B1 (fr
Inventor
Ralf Paugstadt
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.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
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 Bundesdruckerei GmbH filed Critical Bundesdruckerei GmbH
Publication of EP1030786A1 publication Critical patent/EP1030786A1/fr
Application granted granted Critical
Publication of EP1030786B1 publication Critical patent/EP1030786B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B42D25/351—Translucent or partly translucent parts, e.g. windows
    • 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
    • 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
    • B42D25/40—Manufacture
    • B42D25/45—Associating two or more layers
    • 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
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing

Definitions

  • the invention relates to a security feature for value and security documents according to the preamble of claim 1 and a method for its production
  • multiplex holograms This is a hologram which generates different images for the viewer from different viewing directions.
  • interference layers in foils or generally in transparent bodies are also known Inference layers are thin optical layers that produce angle-dependent graphic or colored effects - depending on the viewing angle
  • variable displays are known. These are lens arrays, which can be arranged on a security document via printing or security features and, depending on the direction of view of this lens, produce a different image depending on the viewing angle
  • holograms and interference layers are difficult to display under a variety of lighting conditions.
  • holograms and interference layers are wavelength-dispersive, which means that when viewed, different color fringes occur in white light, depending on the viewing angle
  • the aforementioned lens arrays require complex manufacturing technologies and a certain, finite substrate thickness
  • the invention is characterized by the technical teaching of claim 1
  • An essential feature of the invention is that lamellae, which almost overlap one another, are arranged in a transparent body and fill the cross-section of the body in an approximately stepped manner. Fractal, rising lamellae are preferred.
  • the invention is therefore based on the knowledge that a transparent substrate is subdivided by a non-transparent lamella system, in such a way that the substrate appears transparent when viewed in a certain direction while the light-transparent lamella system is visible when the direction of view is changed is prevented and a look through the substrate.
  • the substrate If the substrate is rotated under the eye while the direction of view remains the same, the substrate appears transparent or black, depending on the rotation, because in the case of blackening, the non-transparent slat system with its non-transparent slats prevents a view through the substrate.
  • each lamella forms a straight line on its side edge, but that each lamella is divided into a plurality of partial lamellas rising in a step-like manner, so that fractal lamellae are created which fill the cross section of the substrate.
  • such a transparent substrate can be designed in such a way that it is at a certain observation angle of z. B. 90 ° appears completely transparent, and that then a sudden change occurs and from this angle of change, the substrate no longer appears transparent when it is rotated further.
  • lamella systems can be arranged side by side and / or one above the other. They can overlap or exist in separate areas.
  • the lamella system according to the invention is suitable for use in transmitted light and / or incident light.
  • Figure 1 schematically shows a substrate with a simple lamella arrangement with non-fractal division
  • FIG. 2 a substrate modified compared to FIG. 1 with a fractal division of lamellae
  • Figure 3a the representation of a continuous line segment, which forms the side edge of a lamella according to Figure 1;
  • Figure 3b the division of this line segment of the lamella according to Figure 3a at a first angle
  • Figure 3c the subdivision of the lines according to Figure 3b by doubling this angle
  • Figure 3d the subdivision of the line according to Figure 3c while tripling the angle
  • Figure 4 shows a schematic representation of the light-dark change when changing the direction of observation.
  • Figure 1 shows a substrate, i. H. thus a transparent body 2, which shows a total of three (roughly spaced apart) slats 6, 7, 8.
  • the body here has two longitudinal sides 3 spaced apart from one another and the narrow sides 26 are arranged at an angle of 90 ° therefrom.
  • the body is further defined by an upper cover surface 4 and a lower cover surface 5. It is therefore an approximately plate-shaped body 2, which should be transparent.
  • Each lamella is defined by a longitudinal edge 9 which runs approximately parallel to the longitudinal edge of the narrow sides 26, and for the rest the surface of each lamella 6-8 also runs parallel to the narrow sides 26 of this plate-shaped body.
  • the narrow sides of each lamella are each defined by a line segment 1 which runs approximately parallel to the narrow sides of the body.
  • the non-transparent lamellae 6, 7, 8 prevent a view through the body; the body appears black.
  • light-dark information can be conveyed, which depends on the position of the slats and their number, etc.
  • the lamella system from Figure 3d is almost opaque for all angles between 0 ° and + 90 ° and almost translucent for all angles between 0 ° and -90 ° (see Fig. 4).
  • a small angle ⁇ and a large N the deviations from "opaque” and "translucent” go to zero with increasing iteration.
  • Such fractal lamellae can be used to construct images that appear and disappear at sharply defined angles. It has been mathematically proven that fractal lamella systems can be constructed, the parallel projection of which gives a desired image for this solid angle from every solid angle.
  • the lamella systems can be exposed, written, embossed, extruded, mechanically produced (drilled) or implemented in a similar process in a substrate. They can be designed for viewing through or from above (back lighting or reflection).
  • the security feature can be colored by a suitable choice of the colors of the substrate and slats.
  • FIG. 2 now shows the application of the fractal lamellae 14, 15, 16, 17 shown in FIG. 3d in a substrate according to FIG. 2.
  • the lamellae 14 - 17 are lined up to form a gap 12, 13 in a dense and step-like manner and in a step-like manner, the spaces 12, 13 allowing a view through these fractal lamellae when the body 2 is in the area between the arrow directions 21 - 22 is viewed from above. In contrast, in the area between the arrow directions 11-22, the body 2 appears dark.
  • FIG. 4 shows schematically that, depending on the direction of observation 23, there is a bright area 24 in the angular range from + 90 ° to 0 ° and likewise a dark area 25 in the angular range from 0 ° to + 90 °.
  • Security features can be easily integrated into value and security documents.
  • a transparent body can be arranged in a window-like section of such a value and security document and can be viewed either in transmitted light or in reflected light.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Burglar Alarm Systems (AREA)
  • Holo Graphy (AREA)
  • Image Generation (AREA)
  • Laminated Bodies (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Facsimile Transmission Control (AREA)
  • Record Information Processing For Printing (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

Elément de sécurité destiné à un document de valeur ou à un document de sécurité, comportant un corps transparent (2) pourvu d'unités qui représentent une information graphique en fonction de l'angle (18, 19, 20) formé entre la direction d'illumination et la direction d'observation. Ces unités comprennent des lamelles (7, 8) qui se chevauchent pratiquement les unes les autres et sont placées sous forme de gradins dans ledit corps transparent (2). Les lamelles (7, 8) se présentent de préférence sous forme fractale et sont placées de façon ascendante dans ledit corps (2).
EP98965625A 1997-11-11 1998-10-10 Element de securite destine a un document de valeur ou a un document de securite, comportant un systeme de lamelles fractales Expired - Lifetime EP1030786B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19749789 1997-11-11
DE19749789A DE19749789A1 (de) 1997-11-11 1997-11-11 Sicherheitsmerkmal für ein Wert- oder Sicherheitsdokument mit fraktalem Lamellensystem
PCT/EP1998/006431 WO1999024265A1 (fr) 1997-11-11 1998-10-10 Element de securite destine a un document de valeur ou a un document de securite, comportant un systeme de lamelles fractales

Publications (2)

Publication Number Publication Date
EP1030786A1 true EP1030786A1 (fr) 2000-08-30
EP1030786B1 EP1030786B1 (fr) 2002-06-05

Family

ID=7848280

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98965625A Expired - Lifetime EP1030786B1 (fr) 1997-11-11 1998-10-10 Element de securite destine a un document de valeur ou a un document de securite, comportant un systeme de lamelles fractales

Country Status (11)

Country Link
EP (1) EP1030786B1 (fr)
JP (1) JP2002516766A (fr)
KR (1) KR20010031973A (fr)
CN (1) CN1283154A (fr)
AT (1) ATE218447T1 (fr)
CA (1) CA2309960A1 (fr)
DE (2) DE19749789A1 (fr)
HU (1) HUP0100158A2 (fr)
IL (1) IL136038A0 (fr)
PL (1) PL340404A1 (fr)
WO (1) WO1999024265A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10358784A1 (de) * 2003-12-12 2005-07-14 Giesecke & Devrient Gmbh Datenträger mit mittels Laserstrahl eingeschriebenen Kennzeichnungen und Verfahren zu seiner Herstellung
DE102006050047A1 (de) 2006-10-24 2008-04-30 Giesecke & Devrient Gmbh Durchsichtssicherheitselement mit Mikrostrukturen

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887742A (en) * 1972-04-13 1975-06-03 Richard E Reinnagel Copy resistant documents
DE2540846A1 (de) * 1975-09-13 1977-03-17 Pelikan Werke Wagner Guenther Schutzueberzug fuer dokumente gegen kopieren
DE4226907A1 (de) * 1992-08-14 1994-02-17 Basf Magnetics Gmbh Film oder Schicht aus transparentem Material, insbesondere Kunststoff
DE4226906A1 (de) * 1992-08-14 1994-02-17 Basf Magnetics Gmbh Anti-Kopier-Film oder -Schicht für Dokumente
DE4236563A1 (de) * 1992-10-29 1994-05-05 Basf Magnetics Gmbh Anti-Kopier-Film oder -Schicht
US5393099A (en) * 1993-05-21 1995-02-28 American Bank Note Holographics, Inc. Anti-counterfeiting laminated currency and method of making the same
DE4320219A1 (de) * 1993-06-18 1994-12-22 Basf Magnetics Gmbh Antikopierfilm
DE4321685A1 (de) * 1993-06-30 1995-03-23 Basf Magnetics Gmbh Antikopierfilm
DE4324087A1 (de) * 1993-07-17 1995-01-19 Basf Magnetics Gmbh Verfahren zur Herstellung eines Antikopierfilms
DE4328413A1 (de) * 1993-08-24 1995-03-02 Basf Magnetics Gmbh Antikopierfilm
DE4334848C1 (de) * 1993-10-13 1995-01-05 Kurz Leonhard Fa Wertpapier mit Fenster
DE4432062C1 (de) * 1994-09-09 1995-11-30 Kurz Leonhard Fa Visuell identifizierbares optisches Element
DE4436192C1 (de) * 1994-10-11 1996-03-21 Kurz Leonhard Fa Strukturanordnung, insbesondere für ein Sicherheitselement
DE4441198A1 (de) * 1994-11-18 1996-05-23 Giesecke & Devrient Gmbh Verfahren zur Herstellung eines Datenträgers
NL1001876C2 (nl) * 1995-12-12 1997-06-17 Ing Groep Nv Werkwijze voor het aanbrengen van een beveiligingskenteken op een voor- werp, zoals een bankpas, creditcard, identiteitsbewijs of onderdeel van een motor of machine.

Also Published As

Publication number Publication date
EP1030786B1 (fr) 2002-06-05
HUP0100158A2 (en) 2002-07-29
CA2309960A1 (fr) 1999-05-20
PL340404A1 (en) 2001-01-29
KR20010031973A (ko) 2001-04-16
JP2002516766A (ja) 2002-06-11
DE19749789A1 (de) 1999-05-12
IL136038A0 (en) 2001-05-20
DE59804359D1 (de) 2002-07-11
WO1999024265A1 (fr) 1999-05-20
CN1283154A (zh) 2001-02-07
ATE218447T1 (de) 2002-06-15

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