EP0628431B1 - Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement - Google Patents

Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement Download PDF

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Publication number
EP0628431B1
EP0628431B1 EP94108562A EP94108562A EP0628431B1 EP 0628431 B1 EP0628431 B1 EP 0628431B1 EP 94108562 A EP94108562 A EP 94108562A EP 94108562 A EP94108562 A EP 94108562A EP 0628431 B1 EP0628431 B1 EP 0628431B1
Authority
EP
European Patent Office
Prior art keywords
layer
laser beam
coloured layer
relief structure
record carrier
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.)
Expired - Lifetime
Application number
EP94108562A
Other languages
German (de)
English (en)
Other versions
EP0628431A1 (fr
Inventor
Hansjürgen Merkle
Joseph Lass
Wolfgang Killar
Alexander Hierweger
Erwin Lob
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.)
GAO Gesellschaft fuer Automation und Organisation mbH
Original Assignee
GAO Gesellschaft fuer Automation und Organisation mbH
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 GAO Gesellschaft fuer Automation und Organisation mbH filed Critical GAO Gesellschaft fuer Automation und Organisation mbH
Publication of EP0628431A1 publication Critical patent/EP0628431A1/fr
Application granted granted Critical
Publication of EP0628431B1 publication Critical patent/EP0628431B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B42D25/40—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
    • B42D25/43—Marking by removal of material
    • B42D25/435—Marking by removal of material using electromagnetic radiation, e.g. laser
    • 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
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
    • 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
    • B42D25/30—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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/43—Marking by removal of material
    • 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
    • B42D2033/04—
    • B42D2033/08—
    • B42D2033/20—
    • B42D2033/24—
    • B42D2035/08—
    • B42D2035/12—
    • B42D2035/20—
    • B42D2035/30—

Definitions

  • the invention relates to a record carrier according to the preamble of claim 1, in particular an identification card and method for labeling such a record carrier.
  • the record carriers in question here are identity cards, e.g. B. credit cards, credit cards, authorization cards or business cards and the like.
  • Identity cards of this type have a format prescribed by standards and generally have a multilayer structure.
  • On one side of the card are e.g. B. by printing or general photographic information, e.g. B. the name of a credit institution, an organization or the like, as well as possibly a security print image (guilloche pattern), which is placed on the card surface or inside the card.
  • the user-related information such as the name of the card holder, customer number, account number, card number or the like is introduced.
  • the upper first layer of a multi-layer recording medium reacts to the incident laser beam and is removed in order to expose the second layer underneath and to make its color visible from all viewing angles.
  • a surface is structured in such a way that information can be introduced with the aid of a laser beam in such a way that it shows different appearances, depending on the respective viewing angle.
  • such a data carrier In addition to the viewing angle-dependent effect, which in itself considerably increases the security against forgery of the data carrier, such a data carrier also has the advantage that the inscriptions introduced with the aid of a laser beam cannot be achieved with simple mechanical means, such as by mechanical engraving methods.
  • the relief structure is printed by e.g. B. arises from gravure printing or a relief structure is embossed, which continues over the layers above.
  • These relief-like surfaces can be labeled in the same way as smooth surfaces according to the inventive method.
  • the security against forgery of laser engraving (lettering) is particularly important here, since structures of this type cannot be labeled in this simple form using mechanical engraving, which is known per se.
  • the recorded information changes its appearance depending on the viewing angle and, in extreme cases, is only visible from the side from which the recording was made.
  • the marking of a record carrier with a laser beam is particularly effective if the record carrier has passed with an embossed structure in the form of, for example, a corrugated iron structure, half cylinders, hemispheres, lens elements or the like. This is because the laser beam can first be guided over the embossed structure in a certain direction at a certain angle with respect to the plane of the recording medium. Only the "slopes" of this embossed structure facing the laser beam are labeled.
  • the "slopes" of the embossed structure are labeled with the laser beam once from one side and once from the other side, correspondingly the label direction is a different picture when viewed from the corresponding direction if the different sides of the embossing structure are designed accordingly. It is thus possible to generate different images for different viewing directions on opaque surfaces, these images also being able to be viewed separately from one another depending on the viewing angle, or complementing one another with a vertical viewing angle.
  • Fig. 1 shows a part of a known ID card in cross-step (DE-OS 30 48 735), which is here z. B. can be a check card.
  • Two color layers B and C are applied to a base layer A.
  • the map layers are shown in this and in the following figures in a form that is not to scale.
  • These two layers of paint differ in their color and in their absorption properties and evaporation points. Since the layer thicknesses at different points are not always exactly uniform, but fluctuate within certain limits and the evaporation points are usually relatively close together, the dosage of the laser beam intensity is a problem for the exposure of the desired color layer.
  • the layers are therefore preferably removed step by step in a plurality of irradiation processes with a correspondingly low intensity in order to expose one layer in a targeted manner and not to cause an incomplete or complete removal together with further layers in an undesired manner.
  • a plurality of irradiation processes with a correspondingly low intensity in order to expose one layer in a targeted manner and not to cause an incomplete or complete removal together with further layers in an undesired manner.
  • further labeling steps (F, G) for removing a location of layer B are carried out. In this way, multi-colored representations are generated in several process steps.
  • FIG. 2 there are embossments 34 running into a base layer 31 into the plane of the drawing, on the outside there is a continuous first color layer 33 which hardly absorbs laser light, and below the first color layer 33 there is a second color layer 32 (this can also be transparent) ) that the laser light absorbs.
  • a second color layer 32 this can also be transparent
  • Individual areas of the color layers 32 and 33 are removed by scanning with a laser beam.
  • the second color layer 32 can also only be removed to a certain depth so that its color is visible or replaced by a transparent lacquer layer sensitized in the form described above by admixing pigments. In the latter case, the top of the base layer 31 or the embossments 34 is then visible in the labeled areas.
  • the laser beam strikes the identification card at an acute angle, as shown by the arrows P in Fig. 3.
  • the structure of the hardness according to FIG. 3 is similar in principle to the structure according to FIG. 2. However, due to the oblique irradiation with laser light, only the inclined surfaces 35 of the embossments 34 facing the light source are “labeled”, while the inclined surfaces 36 facing away from the light source are hardly or at all not be affected by laser light.
  • the acute angle between the incident laser beam and the identity card plane means that the outer color layer 33 is visible from one side (from the left in FIG. 3), while the other is visible Side (right in Fig. 3) mainly the areas exposed by the inscription with laser light are visible.
  • FIG. 4 shows another representation of a layer 41 provided with an embossed structure 42 (alternating field shape).
  • z. B a transparent, thermally degradable lacquer layer 45 and an outer color layer 46 thereon.
  • B line-shaped the substrate 41 is exposed on the inclined surfaces 35 of the embossed structure 42 shown in FIG. 3 and facing the laser.
  • With a z. B. line-shaped recording process only sections 44 a b, c are exposed in a scanning line 44 due to shadowing by the embossed structures. The result is a direction-dependent image that cannot be reproduced in this form in terms of copying technology or photography.
  • such optically varying images can be applied over a large area to an identification card 50 by providing the entire card with, for example, individual embossing lines 51 which run through the card and essentially follow a predetermined direction.
  • an embossed structure 52 the embossed structures, as shown in FIG. 4, directly against one another adjacent in continuous form.
  • This area can e.g. B. can be labeled from different directions with different image motifs, which in turn can only be seen separately from the respective recording direction and can complement one another when viewed vertically.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Electromagnetism (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Printing Methods (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Claims (2)

  1. Support d'enregistrement, en particulier carte d'identité pourvue d'une couche extérieure ou d'un revêtement qui sous l'effet d'un rayon laser modifie visiblement sa couleur ou son contraste par rapport à ses alentours, caractérisé en ce qu'au moins cette couche présente une structure en relief, de préférence sous la forme d'éléments demi-cylindriques, d'éléments hémisphériques, de structures semblables à des tôles ondulées ou similaires, et en ce que des informations sont enregistrées au moyen d'un rayon laser suivant un angle aigu par rapport au plan du support d'enregistrement dans la zone de cette structure en relief, les surfaces inclinées tournées vers la direction d'enregistrement étant écrites différemment par rapport aux surfaces inclinées détournées de cette direction de façon que les informations enregistrées - qui dépendent de l'angle d'observation respectif - présentent des formes apparentes différentes.
  2. Procédé d'écriture d'un support d'enregistrement, en particulier d'une carte d'identité, pourvu d'une couche extérieure ou d'un revêtement qui sous l'effet d'un rayon laser modifie visiblement sa couleur ou son contraste par rapport à ses alentours, caractérisé en ce qu'une structure en relief est formée au moins dans cette couche, de préférence sous la forme d'éléments demi-cylindriques, d'éléments hémisphériques, de structures semblables à des tôles ondulées et similaires, et en ce que des informations sont enregistrées au moyen d'un rayon laser suivant un angle aigu par rapport au plan de support d'enregistrement dans la zone de cette structure en relief, les surfaces inclinées tournées vers la direction d'enregistrement étant écrites différemment par rapport aux surfaces inclinées détournées de cette direction de façon que les informations enregistrées - qui dépendent de l'angle d'observation respectif - présentent des formes apparentes différentes.
EP94108562A 1988-12-02 1989-11-16 Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement Expired - Lifetime EP0628431B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3840729 1988-12-02
DE3840729A DE3840729C2 (de) 1988-12-02 1988-12-02 Mehrschichtiger Aufzeichnungsträger und Verfahren zum Beschriften eines mehrschichtigen Aufzeichnungsträgers
EP89121237A EP0372274B1 (fr) 1988-12-02 1989-11-16 Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP89121237A Division EP0372274B1 (fr) 1988-12-02 1989-11-16 Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement
EP89121237.5 Division 1989-11-16

Publications (2)

Publication Number Publication Date
EP0628431A1 EP0628431A1 (fr) 1994-12-14
EP0628431B1 true EP0628431B1 (fr) 1997-06-18

Family

ID=6368372

Family Applications (2)

Application Number Title Priority Date Filing Date
EP94108562A Expired - Lifetime EP0628431B1 (fr) 1988-12-02 1989-11-16 Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement
EP89121237A Expired - Lifetime EP0372274B1 (fr) 1988-12-02 1989-11-16 Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89121237A Expired - Lifetime EP0372274B1 (fr) 1988-12-02 1989-11-16 Support d'enregistrement fait de plusieurs couches et procédé d'écriture sur un support d'enregistrement

Country Status (6)

Country Link
US (1) US5298922A (fr)
EP (2) EP0628431B1 (fr)
JP (1) JP2885319B2 (fr)
AT (2) ATE118407T1 (fr)
DE (3) DE3840729C2 (fr)
ES (1) ES2069565T3 (fr)

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DE58909000D1 (de) 1995-03-23
EP0372274A3 (fr) 1991-04-10
DE3840729C2 (de) 1997-07-17
ES2069565T3 (es) 1995-05-16
ATE154548T1 (de) 1997-07-15
JPH02184497A (ja) 1990-07-18
JP2885319B2 (ja) 1999-04-19
US5298922A (en) 1994-03-29
ATE118407T1 (de) 1995-03-15
DE3840729A1 (de) 1990-06-13
EP0628431A1 (fr) 1994-12-14
EP0372274A2 (fr) 1990-06-13
DE58909804D1 (de) 1997-07-24
EP0372274B1 (fr) 1995-02-15

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