EP3511176A1 - Élément de sécurité doté d'une structure optique variable dans une cavité - Google Patents

Élément de sécurité doté d'une structure optique variable dans une cavité Download PDF

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Publication number
EP3511176A1
EP3511176A1 EP19000024.0A EP19000024A EP3511176A1 EP 3511176 A1 EP3511176 A1 EP 3511176A1 EP 19000024 A EP19000024 A EP 19000024A EP 3511176 A1 EP3511176 A1 EP 3511176A1
Authority
EP
European Patent Office
Prior art keywords
embossing
microns
depth
security element
substrate
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
EP19000024.0A
Other languages
German (de)
English (en)
Other versions
EP3511176B1 (fr
Inventor
Peter Franz
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.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology 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 Giesecke and Devrient Currency Technology GmbH filed Critical Giesecke and Devrient Currency Technology GmbH
Publication of EP3511176A1 publication Critical patent/EP3511176A1/fr
Application granted granted Critical
Publication of EP3511176B1 publication Critical patent/EP3511176B1/fr
Active 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
    • B42D25/324—Reliefs
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing

Definitions

  • the invention relates to a security element with an optically variable structure, which has an embossed structure and a coating, wherein the embossed structure and the coating are combined so that at least parts of the coating are completely visible when viewed perpendicularly, but covered by oblique view, so that at Changing the viewing direction different information will be visible.
  • the invention further relates to a stamping tool for producing such a security element.
  • the invention further relates to a stamping tool for producing such a security element.
  • the incompletely crosslinked ink layer is brought into contact with a stamping tool within a second screen printing unit so as to provide the ink layer with a macroscopic embossed structure, wherein the recesses of the macroscopic embossing pattern have a depth in a range of 13 .mu.m to 30 .mu.m.
  • the ink layer is provided with a fine embossment pattern overlying the macroscopic embossment pattern, wherein the recesses of the fine embossed structure have a depth in a range of 0.1 ⁇ m to 10 ⁇ m.
  • the embossing structure consists of a first embossing element with an embossing depth of more than 30 microns and second embossing elements with an embossing depth of more than 10 microns, wherein the second embossing elements are disposed within the first embossing element and superimpose this, wherein the security element of a substrate made of paper or cardboard and the embossed structure is embossed in the substrate.
  • the embossing displaces the material of the substrate and thus produces a permanent deformation of the substrate.
  • the corresponding embossing tool has a first elevation or depression for producing a first embossing element with a depth of more than 30 microns, wherein within a first elevation or depression second elevations or depressions are arranged with a depth of more than 10 microns, so that first increase or depression and superimpose the second elevations or depressions.
  • the depth of the respective increase or depression in the embossing tool is known to be slightly larger than that of the corresponding embossing elements in the substrate of the security element, which were produced with this embossing tool.
  • This difference between the depth / height of the structures in the embossing tool and the height / depth of the embossed structures in the substrate is due to the fact that the substrate during Embossing process can not be completely pressed into the recesses or on the elevations of the embossing tool.
  • the first embossing element consists of a gutter-shaped or roof-shaped or dome-shaped depression or elevation. Accordingly, the first increase or depression of the embossing tool is channel-shaped or roof-shaped or dome-shaped.
  • calotte-shaped means that the depression or elevation is at least approximately in the form of a spherical or elliptical cap or shell. Instead of sphere or ellipse and similar dome-shaped or elongated shapes are possible, whose cross-section is at least approximately in the form of a circular or elliptical segment.
  • the depressions or elevations of the embossing tool at its edge merge softly into the surrounding surface of the embossing tool in order to prevent substrate damage during an embossing process.
  • the steepness of the flanks influences the tear behavior of the substrate.
  • the first embossing element or the first elevation or depression of the embossing tool preferably has a depth of from 30 ⁇ m to 1000 ⁇ m, more preferably from 30 ⁇ m to 400 ⁇ m and very particularly preferably from 50 ⁇ m to 200 ⁇ m.
  • the first embossing element or the first elevation or depression of the embossing tool preferably has a diameter of from 30 ⁇ m to 1500 ⁇ m, particularly preferably from 100 ⁇ m to 700 ⁇ m and very particularly preferably from 120 ⁇ m to 500 ⁇ m.
  • the first embossing element or the first increase or depression of the embossing tool is at least both in the lateral and vertical dimensions three times greater than the second embossing elements or second elevations or depressions of the embossing tool.
  • the distance between two adjacent second embossing elements or second elevations or depressions of the embossing tool is 0 ⁇ m to 100 ⁇ m, preferably 0 ⁇ m to 50 ⁇ m and particularly preferably 0 ⁇ m to 20 ⁇ m.
  • the outer contour of the second embossing elements or second elevations or depressions of the embossing tool is configured triangular, quadrangular, pentagonal, hexagonal or honeycomb-shaped or polygonal.
  • the dimensions of the first embossing element or the first increase or depression of the embossing tool is dependent on the material thickness and the embossing material property of the substrate to be embossed.
  • the first elevation or depression, as well as the second elevations or depressions, are preferably laser generated to provide a higher aspect, depth, or height-to-width ratio, greater geometry diversity, and steeper flanks.
  • the coating of the security element is a metallic or metallic-like surface, which is applied to the substrate, for example by screen printing, a silver-colored patch or a film or a laminated material, the or is applied to the substrate.
  • the material of the substrate itself may already be designed to be metallically reflective or reflective.
  • An optically variable element in the sense of this invention is an element whose visual appearance changes upon tilting or rotation of the element. For example, when the optically variable element is tilted or rotated, its color changes, a bar appears to move from one side of the element to another, tilting or rotating causes different characters to appear, or a so-called pumping effect of enlarging or reducing Outline of a picture motif.
  • the substrate is particularly preferably made of paper made of cotton fibers, as used for example for banknotes, or of other natural fibers or of synthetic fibers or of a mixture of natural and synthetic fibers, or of at least one plastic film. Further preferably, the substrate consists of a combination of at least two superimposed and interconnected different substrates, a so-called hybrid. In this case, the substrate consists, for example, of a combination of plastic film-paper-plastic film, i. a paper substrate is covered on either side by a plastic film, or a combination of paper plastic film paper, i. a substrate made of a plastic film is covered on each side by paper.
  • weight of the substrate of banknotes used are, for example, in the Scriptures DE 102 43 653 A9 specified.
  • the font DE 102 43 653 A9 in particular, that the paper layer usually has a weight of 50 g / m 2 to 100 g / m 2 , preferably of 80 g / m 2 to 90 g / m 2 .
  • any other suitable weight can be used.
  • the substrate consists of a cardboard or a paper having a basis weight of 120 g / m 2 or more.
  • Value documents for which such a substrate or security paper can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are subject to counterfeiting, such as passports and other identification documents, and also cards such as credit cards. or debit cards whose card body has at least one layer of security paper, and also product securing elements such as labels, seals, packages, folding boxes, leaflets, blisters, aluminum foils and the like.
  • the simplified term value document includes all the above materials, documents and product safeguards.
  • front side or back side of the substrate or value document or the embossing tool are relative terms which may also be referred to as "the one" and “the opposite” sides and which constitute the overwhelming portion of the overall surface of the substrate or value document or the embossing tool form. Specifically, these terms do not include the side surfaces of a substrate or value document or embossing tool that are at a thickness of a substrate or value document. For card bodies as small as about one millimeter in thickness, or banknotes as small as a fraction of a millimeter in thickness, the side surfaces are vanishingly small and are not usually provided with security elements or coatings.
  • Information within the meaning of this invention is a pattern-shaped and visually perceptible representation. This can for example form an alphanumeric string of numbers and / or letters, a graphic image, an image, a text or other characters. Particularly preferably, the information consists of positive or / and negative motives.
  • a motif element in this case a motif element is itself applied to the substrate, whereas in the case of a negative motif the area surrounding the motif element is applied to the substrate.
  • a positive subject is a letter printed in dark color on the light substrate.
  • a negative motif is, for example, a surface applied in a dark color on the light substrate, which has an unprinted area in the form of a letter within the area.
  • Fig. 1 shows in cross section in Fig. 1a an embossing tool in the form of a stamping plate 1 with a first elevation 2.
  • the first elevation 2 is in shape executed a dome-shaped elevation, wherein the upper edge of the first elevation 2 has a height d 1 from the upper edge of the embossing plate 1.
  • This first increase 2 is according to Fig. 1b provided with second elevations 3, wherein the second elevations 3 protrude with a height d 2 from the first elevation 2. This results in a superposition of the dome-shaped first elevation 2 with the smaller second elevations 3.
  • Fig. 1c shows a substrate 4, for example a paper or a cardboard, with the embossing tool Fig. 1b was coined.
  • the substrate 4 was in this case acted upon from its underside with the embossing tool and from the top with an impression cylinder, so that in its underside the dome-shaped first elevation 2 as dome-shaped first recess 5, indicated by the dashed line, and the second elevations 3 as the second Picture depressions 7.
  • the dome-shaped first depression 5 has a depth t 1 'with respect to the lower edge of the substrate 4 and the second elevations 7 have a depth t 2 '.
  • the depth t 1 'and the amount thereof is slightly smaller than the height d 1 or the amount thereof and the depth t 2 ' or the amount thereof is slightly smaller than the height d 2 or their amount.
  • the first elevation 2 forms as an elevation 6.
  • Fig. 2 shows in cross section in Fig. 2a an embossing tool in the form of an embossing plate 11 with a first recess 12.
  • the first recess 12 is designed in the form of a dome-shaped depression, wherein the upper edge of the first recess 12 has a depth t 1 of the upper edge of the embossing plate 11.
  • This first recess 12 is according to Fig. 2b provided with second recesses 13, wherein the second recesses 13 protrude with a depth t 2 from the first recess 12. This results in a superposition of the dome-shaped first recess 12 with the smaller second recesses 13th
  • Fig. 2c shows a substrate 14, such as a paper or a cardboard, with the embossing tool Fig. 2b was coined.
  • the substrate 4 was in this case acted upon from its underside with the embossing tool and from the top with an impression cylinder, so that in its underside the dome-shaped first recess 12 as a dome-shaped first elevation 15 and the second recesses 13 as a second recesses 17.
  • the dome-shaped first elevation 15 has a height d 1 'with respect to the lower edge of the substrate 14 and the second depressions 17 have a depth d 2 '.
  • the height d 1 'or its amount is slightly smaller than the depth t 1 or the amount thereof and the depth d 2 ' or its amount is slightly smaller than the depth t 2 or the amount thereof.
  • the first recess 12 is formed as a recess 16.
  • the shape of the elevation 6 or the recess 16 may differ greatly by different or varying material properties of the substrate, especially in strength, volume and texture as well as by different backpressure conditions.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Credit Cards Or The Like (AREA)
  • Paper (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
EP19000024.0A 2018-01-15 2019-01-11 Élément de sécurité doté d'une structure optique variable dans une cavité Active EP3511176B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018000243.9A DE102018000243A1 (de) 2018-01-15 2018-01-15 Sicherheitselement mit einer optisch variablen Struktur in einer Vertiefung

Publications (2)

Publication Number Publication Date
EP3511176A1 true EP3511176A1 (fr) 2019-07-17
EP3511176B1 EP3511176B1 (fr) 2020-09-30

Family

ID=65023692

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19000024.0A Active EP3511176B1 (fr) 2018-01-15 2019-01-11 Élément de sécurité doté d'une structure optique variable dans une cavité

Country Status (2)

Country Link
EP (1) EP3511176B1 (fr)
DE (1) DE102018000243A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243653A9 (de) 2002-09-19 2006-11-23 Giesecke & Devrient Gmbh Sicherheitspapier
WO2009013000A2 (fr) * 2007-07-25 2009-01-29 Giesecke & Devrient Gmbh Élément de sécurité présentant plusieurs structures optiquement variables
WO2013020687A1 (fr) * 2011-08-05 2013-02-14 Alltec Angewandte Laserlicht Technologie Gmbh Structure d'embossage
WO2013045055A1 (fr) * 2011-09-30 2013-04-04 Giesecke & Devrient Gmbh Élément de sécurité présentant plusieurs structures optiquement variables
EP2886356A2 (fr) 2013-11-21 2015-06-24 Giesecke & Devrient GmbH Procédé de fabrication d'un document de valeur et d'un élément de sécurité, document de valeur et élément de sécurité ainsi obtenus et dispositif d'exécution du procédé
EP3124284A1 (fr) * 2015-07-31 2017-02-01 Giesecke & Devrient GmbH Structures tactiles sur des objets de valeur

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10243653A9 (de) 2002-09-19 2006-11-23 Giesecke & Devrient Gmbh Sicherheitspapier
WO2009013000A2 (fr) * 2007-07-25 2009-01-29 Giesecke & Devrient Gmbh Élément de sécurité présentant plusieurs structures optiquement variables
WO2013020687A1 (fr) * 2011-08-05 2013-02-14 Alltec Angewandte Laserlicht Technologie Gmbh Structure d'embossage
WO2013045055A1 (fr) * 2011-09-30 2013-04-04 Giesecke & Devrient Gmbh Élément de sécurité présentant plusieurs structures optiquement variables
EP2886356A2 (fr) 2013-11-21 2015-06-24 Giesecke & Devrient GmbH Procédé de fabrication d'un document de valeur et d'un élément de sécurité, document de valeur et élément de sécurité ainsi obtenus et dispositif d'exécution du procédé
EP3124284A1 (fr) * 2015-07-31 2017-02-01 Giesecke & Devrient GmbH Structures tactiles sur des objets de valeur

Also Published As

Publication number Publication date
DE102018000243A1 (de) 2019-07-18
EP3511176B1 (fr) 2020-09-30

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