EP1590185B1 - Herstellungsverfahren eines optischen sicherheitsbauteils - Google Patents

Herstellungsverfahren eines optischen sicherheitsbauteils Download PDF

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Publication number
EP1590185B1
EP1590185B1 EP04707558A EP04707558A EP1590185B1 EP 1590185 B1 EP1590185 B1 EP 1590185B1 EP 04707558 A EP04707558 A EP 04707558A EP 04707558 A EP04707558 A EP 04707558A EP 1590185 B1 EP1590185 B1 EP 1590185B1
Authority
EP
European Patent Office
Prior art keywords
areas
type
surface condition
film
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.)
Revoked
Application number
EP04707558A
Other languages
English (en)
French (fr)
Other versions
EP1590185A2 (de
Inventor
Hugues Souparis
Thierry Sevegrand
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.)
Surys SA
Original Assignee
Hologram Industries SAS
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32696313&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1590185(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hologram Industries SAS filed Critical Hologram Industries SAS
Publication of EP1590185A2 publication Critical patent/EP1590185A2/de
Application granted granted Critical
Publication of EP1590185B1 publication Critical patent/EP1590185B1/de
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • B42D25/373—Metallic materials
    • 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
    • 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
    • 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
    • B42D25/465—Associating two or more layers using chemicals or adhesives
    • B42D25/47—Associating two or more layers using chemicals or adhesives using adhesives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]

Definitions

  • the present invention relates to the field of document authentication and more particularly that of optical identification components using diffractive elements.
  • Some components also include a recognizable color element, to increase security against counterfeiting (see for example US Patent 5492370 ).
  • the US patent US5513019 discloses a security sign comprising a phase hologram embossed in a "Mylar" film having a reflective layer of tungsten oxide, zinc sulfide, or a mixture.
  • the microtexture of relief produces a semi-transparent hologram, allowing the visualization of complementary information.
  • the patent application PCT W00136213 describes a component for authenticating a document or a product, having a transparent plastic film embossed to present at least one diffractive grating, the embossed surface being at least partially coated with a metallization layer, characterized in that the embossed film has a first zone producing a rainbow effect according to a first orientation of the component relative to a lighting direction, said rainbow effect disappearing when the component is oriented perpendicular to the first orientation, and a second zone coated with a dielectric material producing a colored effect of a first color for a first orientation of the component and a second color different for the orientation perpendicular to the first orientation.
  • the first zone is a metallized zone and the second zone is a zone having a deposit of a dielectric material.
  • the component is produced according to a method comprising a step of stamping a transparent film, a metallization step of the stamped film, a step of partial demetallization of the stamped film thus prepared and a step of depositing a dielectric material.
  • the invention relates, in its most general sense, to a method for producing a security optical component, comprising a step of stamping a transparent film ant, a step of vacuum deposition of a layer. of dielectric material of high optical index over the entire surface, a step of partially metallizing the film thus prepared and a sizing step, characterized in that the stamping step is carried out with a matrix having a first type of zones of which the surface state is matte, a second type of zones whose surface state has etches to form a diffractive grating, and in that the metallization step consists in depositing a layer of metal on only part of the zones of each type, the other part remaining transparent.
  • the stamping is performed with a matrix further having a third type of zones whose surface state is smooth.
  • the matrix also having a fourth type of zones whose surface state is semi-matte, with a granularity lower than the matte surface state.
  • some of said metallized portions have a smaller dimension of less than 0.5 mm.
  • some of said transparent portions have a smaller dimension smaller than 0.5 mm.
  • the invention also relates to a matrix for the implementation of this method, having a first type of zones whose surface state is matte, a second type of zones whose surface state has engravings for forming a diffractive grating and a third type of areas whose surface state is smooth, some of said areas have a smaller dimension less than 0.5 mm.
  • a security component characterized in that it has colored areas corresponding to a diffraction grating, areas having a matte metal appearance and areas having a reflective mirror appearance, some of said areas have a smaller dimension less than 0.5 mm.
  • the security component has transparent areas (1) having a matte appearance, metallized areas (2) having a mirror effect, and colored areas (3).
  • This component is realized by a succession of only four operations.
  • the first operation is a step of stamping a plastic film, for example a transparent polyester film.
  • the second operation consists of a vacuum deposition of a layer of dielectric material of high optical index, for example Zinc sulphide (ZnS), over the entire surface of the stamped film.
  • a layer of dielectric material of high optical index for example Zinc sulphide (ZnS)
  • the third operation is a step of partial metallization of the film surface, in register with the stamped areas to form a diffractive grating.
  • the metallization covers only part of the diffracting zones and only a portion of the matt zones, some elements of these overlapping zones having a great fineness, with a smaller dimension of less than 0.5 millimeters.
  • the last step is a sizing step by rolling or coating an adhesive layer.
  • the colored mark has a light gray color, to be visible on the metal parts. It has a matte metal aspect that strongly contrasts with the mirror aspect. It is however imperceptible on the transparent parts.
  • It can also be optically active by combination with other optical effects, to present a pastel color or a watermark effect.

Landscapes

  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Credit Cards Or The Like (AREA)
  • Eyeglasses (AREA)
  • Physical Vapour Deposition (AREA)
  • Glass Compositions (AREA)

Claims (8)

  1. Verfahren zur Herstellung eines optischen Sicherheitsbauteils, mit einem Prägeschritt einer transparenten Folie, einem Vakuumabscheidungsschritt einer Schicht aus dielektrischem Material mit einer hohen Optikzahl über die gesamte Oberfläche, einem Teilmetallisierungsschritt der so vorbereiteten Folie und einem Beleimungsschritt, dadurch gekennzeichnet, dass der Prägeschritt mit einer Matrize durchgeführt wird, die einen ersten Typ von Zonen aufweist, deren Oberflächenzustand matt ist, einen zweiten Typ von Zonen, deren Oberflächenzustand Gravuren aufweist, um ein brechendes Netzwerk zu bilden, und dass der Metallisierungsschritt darin besteht, eine Metallschicht (2) auf nur einem Teil der Zonen eines jedes Typs abzuscheiden, wobei der andere Teil transparent (1) bleibt.
  2. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass das Prägen mit einer Matrize durchgeführt wird, die ferner einen dritten Typ von Zonen aufweist, deren Oberflächenzustand glatt ist.
  3. Verfahren gemäß Anspruch 2, dadurch gekennzeichnet, dass das Prägen mit einer Matrize durchgeführt wird, die ferner einen vierten Typ von Zonen aufweist, deren Oberflächenzustand halbmatt ist, mit einer kleineren Korngröße als der matte Oberflächenzustand.
  4. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass einige der genannten metallisierten Teile eine kleinere Abmessung als 0,5 mm aufweisen.
  5. Verfahren gemäß Anspruch 1, dadurch gekennzeichnet, dass einige der genannten transparenten Teile eine kleinere Abmessung als 0,5 mm aufweisen.
  6. Matrize für die Durchführung des Verfahrens gemäß Anspruch 1, dadurch gekennzeichnet, dass sie einen ersten Typ von Zonen aufweist, deren Oberflächenzustand matt ist, einen zweiten Typ von Zonen, deren Oberflächenzustand Gravuren aufweist, um ein brechendes Netzwerk zu bilden, und einen dritten Typ von Zonen, deren Oberflächenzustand glatt ist, wobei einige der genannten Zonen eine kleinere Abmessung als 0,5 mm aufweisen.
  7. Matrize gemäß Anspruch 6, dadurch gekennzeichnet, dass sie ferner einen vierten Typ von Zonen aufweist, deren Oberflächenzustand halbmatt ist, mit einer kleineren Korngröße als der matte Oberflächenzustand.
  8. Sicherheitsbauteil, dadurch gekennzeichnet, dass es farbige Zonen aufweist, die einem Brechungsnetzwerk entsprechen, Zonen mit einem matten Metallaspekt und Zonen mit einem abstrahlenden Spiegelaspekt, wobei einige der genannten Zonen eine kleinere Abmessung als 0,5 mm aufweisen.
EP04707558A 2003-02-03 2004-02-03 Herstellungsverfahren eines optischen sicherheitsbauteils Revoked EP1590185B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0301221A FR2850609B1 (fr) 2003-02-03 2003-02-03 Procede pour la realisation d'un composant optique de securite
FR0301221 2003-02-03
PCT/FR2004/000251 WO2004069553A2 (fr) 2003-02-03 2004-02-03 Procede pour la realisation d’un composant optique de securite

Publications (2)

Publication Number Publication Date
EP1590185A2 EP1590185A2 (de) 2005-11-02
EP1590185B1 true EP1590185B1 (de) 2009-01-21

Family

ID=32696313

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04707558A Revoked EP1590185B1 (de) 2003-02-03 2004-02-03 Herstellungsverfahren eines optischen sicherheitsbauteils

Country Status (7)

Country Link
US (1) US20060035066A1 (de)
EP (1) EP1590185B1 (de)
AT (1) ATE421431T1 (de)
DE (1) DE602004019188D1 (de)
ES (1) ES2321513T3 (de)
FR (1) FR2850609B1 (de)
WO (1) WO2004069553A2 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100285398A1 (en) * 2007-05-18 2010-11-11 3M Innovative Properties Company Tamper indicating article
GB2456500B (en) 2007-10-23 2011-12-28 Rue De Int Ltd Improvements in security elements
US8663758B2 (en) 2008-09-09 2014-03-04 Frito-Lay North America, Inc. Partially metallized film having barrier properties
GB0902398D0 (en) 2009-02-13 2009-04-01 Conductive Inkjet Tech Ltd Diffractive optical elements

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9106128D0 (en) * 1991-03-22 1991-05-08 Amblehurst Ltd Article
US5513019A (en) * 1993-04-16 1996-04-30 Crown Roll Leaf, Inc. Semi-transparent reflective layer for a phase hologram
GB9917442D0 (en) * 1999-07-23 1999-09-29 Rue De Int Ltd Security device
FR2801246B1 (fr) * 1999-11-19 2002-01-25 Hologram Ind Securisation de documents ou de produits par apposition d'un composant optiquement actif pour la verification de l'authenticite
DE10232245B4 (de) * 2002-07-17 2008-06-12 Leonhard Kurz Gmbh & Co. Kg Optisch variables Element mit variierender Distanzschicht-Dicke

Also Published As

Publication number Publication date
EP1590185A2 (de) 2005-11-02
ES2321513T3 (es) 2009-06-08
WO2004069553A2 (fr) 2004-08-19
FR2850609A1 (fr) 2004-08-06
WO2004069553A3 (fr) 2004-10-21
DE602004019188D1 (de) 2009-03-12
US20060035066A1 (en) 2006-02-16
ATE421431T1 (de) 2009-02-15
FR2850609B1 (fr) 2005-03-25

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