EP2407314B1 - Verfahren zur Aufbringung eines Motivs auf eine Unterlage mit Hilfe von Sicherheitstinte - Google Patents

Verfahren zur Aufbringung eines Motivs auf eine Unterlage mit Hilfe von Sicherheitstinte Download PDF

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Publication number
EP2407314B1
EP2407314B1 EP11172967.9A EP11172967A EP2407314B1 EP 2407314 B1 EP2407314 B1 EP 2407314B1 EP 11172967 A EP11172967 A EP 11172967A EP 2407314 B1 EP2407314 B1 EP 2407314B1
Authority
EP
European Patent Office
Prior art keywords
layer
security
support
pattern
sensitive layer
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
EP11172967.9A
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English (en)
French (fr)
Other versions
EP2407314A1 (de
Inventor
Julien Gillot
Xavier Borde
Florian Demaimay
Christophe Chantrel
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.)
Oberthur Fiduciaire SAS
Original Assignee
Oberthur Fiduciaire SAS
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Filing date
Publication date
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Application filed by Oberthur Fiduciaire SAS filed Critical Oberthur Fiduciaire SAS
Publication of EP2407314A1 publication Critical patent/EP2407314A1/de
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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
    • B42D25/40—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
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
    • 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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • 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
    • B42D25/41—Marking using electromagnetic radiation
    • B42D2033/20—
    • B42D2033/26—
    • B42D2035/20—
    • B42D2035/36—

Definitions

  • the present invention relates to the technical field of security documents, identification documents and / or securities documents.
  • the invention relates to documents which, because of their nature or rights they may confer, must be protected from counterfeiting or falsification.
  • the medium is in the form of a page of a booklet (passport, etc.) or a general form of card (identity card, etc.).
  • variable printed data also designated by variable mentions, related for example to the identity of its bearer (the portrait, the names, first names of the bearer) which therefore differ from one holder to another.
  • the document WO 2005/108110 refers to valuable documents (such as banknotes or checks), to which a laser-generated identifier is added which forms an optical effect that makes it difficult to imitate.
  • an outer ink layer comprising a laser radiation-absorbing component is used by transforming or vaporizing.
  • a laser absorbing layer 126 is introduced beneath the outer layer of ink, and between two layers of laser insensitive ink ( Fig. 7a, 7b ). This laser absorbing intermediate layer 126 and the laser insensitive ink bottom layer are patterned together by printing technology to represent a pattern.
  • the laser absorbing layer 126 is then laser etched and uniformly ablated onto a surface 136. A succession of zones with different optical impressions is thus created.
  • zones 140 and 144 two effects related to the pigments of the outer layer, respectively non-transformed and transformed by the laser, are observed. In an area 142, only a flat, clear surface is observed. Finally, in a zone 146, the color of the laser-insensitive lower layer is simply observed. It is the set of zones that forms the means of identification.
  • documents generally include a combination of security features that make it very difficult to reproduce or falsify.
  • a security element may consist for example of an insert (security thread, electronic chip) incorporated in the support, but also in a pattern (text, portrait, logo, etc.) printed on the support, etc.
  • Such a security element can be controllable without requiring equipment for example by simple observation with the naked eye (first-level security) but may also require an external device for its control (second-level security) or even very sharp analyzes only feasible in specific laboratories (third-level security).
  • security ink means an ink which produces a special effect, for example a variable optical effect as a function of an observation angle, a thermochromic effect, a metallic effect, etc.
  • Iridescent inks also known as "pearlescent” inks, ultraviolet luminescence inks, photochromic inks, phosphorescent inks, etc.
  • security inks may be especially mentioned as security ink.
  • these security inks comprise a matrix that incorporates substances that have specific physical properties (optical, thermal, etc.), for example liquid crystals.
  • the object of the invention is to propose a method for producing a security motif on a medium that overcomes this drawback.
  • the subject of the invention is in particular a method for producing a pattern with a security ink on a support, characterized in that the support comprising at least one layer sensitive to laser radiation and a layer of security ink arranged above the sensitive layer so that the sensitive layer is observable through the security layer at least a predefined wavelength, the method comprises a step of marking the sensitive layer with a laser beam by ablation of this layer at a plurality of beam impact points on the layer to form a predefined thickness profile of this layer. layer so that this thickness profile generates a modulation of light intensity reproducing the pattern, observable through the security layer at the predefined wavelength.
  • the layer of security ink thus acts as a protective layer preventing tampering (indeed, the ink layer can not be easily removed without creating irreversible damage to the support easily identifiable) while allowing to reveal the pattern.
  • the pattern, marked in the sensitive layer by the laser beam through the layer of security ink is in the form of a profile of varying thickness with strong ablation zones and zones. lower ablation thus creating a light intensity modulation observable through the ink layer.
  • the desired pattern can thus be reproduced in grayscale.
  • the thickness variation of the sensitive layer produces a modulation of the light intensity perceptible by an observer through the security layer.
  • the security layer is deposited in flat form, that is to say a layer of substantially uniform thickness.
  • the security layer defines itself another pattern, said external pattern as opposed to the observable pattern through this layer, said internal pattern. Both motifs are for example in locating with respect to one another to compose together an observable image at least at the predefined wavelength.
  • the laser beam is directed on the support, once the security layer has been deposited, and the sensitive layer is marked through the security layer on one of the faces of the security layer. the sensitive layer opposite the security layer.
  • the ablation zone is located opposite the ink layer which makes it possible to make the pattern directly visible in reflective observation.
  • a hollow surface profile, and thus ablation by the laser beam of the sensitive layer can be made from the opposite side of the face opposite the security layer.
  • the pattern may be revealed in observation by translucency of at least the sensitive layer.
  • the laser beam being emitted by a source of pulses of adjustable intensity and duration, to form the pattern according to the predefined depth profile, the intensity, the number and / or the duration of the pulses of the source of the laser beam to vary the ablation depth.
  • the pattern being decomposed into a matrix of pixels, each pixel being associated with a gray level of a predefined gray scale, to vary the gray level from one pixel to another, the number of impact points per pixel of the laser beam on the sensitive layer and / or the ablation depth of each of the impact points of the pixel is varied.
  • the security layer is applied to the support by screen printing, flexography, offset, intaglio, letterpress, pad printing, thermal transfer and / or gravure printing.
  • the sensitive layer is also an ink layer which incorporates security tracers, such as fluorescent particles, reaction-type particles at a predefined wavelength, photochromic particles, and / or thermochromic particles.
  • security tracers such as fluorescent particles, reaction-type particles at a predefined wavelength, photochromic particles, and / or thermochromic particles.
  • the sensitive layer has optical properties that differ in a vertical direction of the support.
  • the sensitive layer comprises at least two sublayers superimposed on each other and made of materials having distinct optical properties.
  • the security layer is made of a material comprising an ink with a variable optical effect of the liquid crystal type, for example the ink of the OASIS® brand sold by SICPA, a variable optical effect ink, such as, for example, OVI® ink, sold by SICPA, or an iridescent ink, etc.
  • the support comprises at least one other layer, called the carrier layer, forming a substrate of the support and being flexible or rigid.
  • the support incorporating at least one security element at least partially reveals this element by ablation of the sensitive layer to the right of the element.
  • the invention also relates to a security document comprising a support and a security element carried by the support, characterized in that the support comprises at least one layer sensitive to laser radiation and at least one layer of security ink, said security layer, the security element comprising a pattern made according to a method according to the invention.
  • the pattern can in particular be reproduced in gray level.
  • the document is selected from a bank note, a passport and a microcircuit card.
  • the security document is designated by the general reference 10.
  • the security document 10 is an identity document, such as an identity card.
  • the security document 10 may be for example a document-value such as a bank note, a bank card or an identity document such as a passport, etc.
  • the document 10 includes a support 12.
  • the support 12 form a body 14 of the card 10 and defines a first 12A and second 12B opposite faces, one of the faces 12A carrying data.
  • the card 10 is an identity card in standardized format ID-2, that is to say of dimensions 105 x 74 mm or in ID-1 format, that is to say of dimensions 85.6 x 53.98 mm.
  • ID-2 identity card
  • ID-1 ID-1 format
  • the document may be a page of this passport format standardized ID-3, that is to say, dimensions 125 x 88 mm.
  • the identity document 10 comprises, for example, variable data related to the bearer of the document such as a portrait 16 representing the wearer, personal data such as the date of birth, the address, the surname and given names of the wearer, etc. .
  • these variable data may also consist of an identification number of the document 10, here the number "123456789".
  • the document also comprises at least one security element 22.
  • the document 10 comprises several security elements 22.
  • the document 10 comprises security elements 22 embedded in the support 12 such as a near-field communication circuit including an antenna and a microcircuit connected to the antenna (not shown), a safety wire, a hologram (not shown), etc.
  • one of the security elements 22 comprises a pattern 24 made on the support 12 with a security ink.
  • the pattern 24 comprises for example a variable datum such as the photograph 16 of the wearer.
  • the pattern 24 may represent other data of the document 10.
  • the support 12 comprises a sensitive layer 26 to laser radiation.
  • the laser radiation comes from an Nd: YAG laser source (yttrium garnet laser and doped with neodymium). Such a source emits radiation in the near infrared spectrum, generally around the wavelength of 1 micron (accurately at 1064 nm).
  • a sensitive layer 26 made of a material substantially opaque to visible light will preferably be chosen.
  • the sensitive layer 26 is made with a white ink (for example, the Phoenix 940 ® ink sold by the company INX or the ink referenced 94911 sold by the company SIEGWERK).
  • the sensitive layer 26 is deposited in gravure printing.
  • other printing techniques may be suitable, such as screen printing, flexography, etc.
  • the sensitive layer 26 preferably incorporates security tracers, such as fluorescent particles, photochromic particles and / or thermochromic particles, this to further increase the reproduction complexity and therefore the level of security.
  • security tracers such as fluorescent particles, photochromic particles and / or thermochromic particles
  • the support 12 comprises a layer of security ink, called the security layer 28.
  • this security layer 28 is deposited in the form of a solid surface on the support 12, for example in a predefined area of the support 12.
  • the term "solid area" is intended to mean a layer having a substantially uniform overlap on the support 12.
  • This security layer 28 may optionally comprise at least two distinct color zones.
  • the security layer 28 uniformly covers a limited area of the support 12. In a variant illustrated for example by the figure 4 , the security layer 28 may extend over the entire surface of the support 12.
  • the security layer 28 and the sensitive layer 26 are arranged on the support 12 so that the sensitive layer 26 is observable at least one predefined wavelength of observation through the insensitive layer 28.
  • This observation is preferably also carried out under a predefined observation angle.
  • a shiny appearance appears.
  • the predefined wavelength is a wavelength of the visible spectrum.
  • the security layer 28 may possibly allow only wavelengths outside the visible spectrum to pass, the observation of the sensitive layer 26 through the security layer 28 then being made possible in this case than by means of an external optical device.
  • the security layer 28 is deposited on the support 12 for example by screen printing, flexography, offset, pad printing, intaglio printing, typography and / or gravure printing. This list is of course not limiting.
  • the security layer 28 is deposited directly on the sensitive layer 26.
  • a transparent layer at the predefined wavelength can be inserted between the sensitive layer 26 and the security layer 28.
  • the pattern 24 is marked by means of a laser beam 30 in the sensitive layer 26 by ablation of the latter at a plurality of impact points of the beam 30 on the layer 26 to form a profile.
  • predefined thickness 27 a sectional view is shown on the figure 2 . More particularly, the thickness profile 27 is formed in order to generate a light intensity modulation reproducing the pattern 24, this modulation being observable through the security layer 28 at the predefined wavelength.
  • the ablation of the sensitive layer 26 is carried out for example by total or partial vaporization of this layer 26 at the point of impact.
  • the hue observed through the security layer 28 thus depends on the amount of vaporized material of the sensitive layer 26 and / or the density of the impact points. In the example described, the greater the amount of vaporized material, the darker the hue observed.
  • the pattern 24 is then formed by means of a laser beam by modulation of the thickness of the sensitive layer 26, this modulation producing a light intensity modulation observable through the security layer 28.
  • the pattern 24 is decomposed into a matrix 31 of pixels 33, that is to say the pattern 24 is sampled, which makes it possible to choose the fineness of printing as a function of the number of sampling pixels of the pattern 24.
  • each pixel of the matrix is associated with a gray level of a predefined gray scale.
  • the number of points of impact per pixel of the laser beam on the sensitive layer 26 is varied and / or the ablation depth of each of the pixel impact points. This sampling is illustrated schematically for example on the figure 9 .
  • the support 12 also comprises a carrier layer 32, forming a substrate of the support 32, distinct from the other two layers 26 and 28.
  • the substrate 32 is made of a plastic material chosen from polycarbonate, polypropylene, polyester and PVC, or a mixture of these products.
  • Substrate 32 may further comprise, for example, several layers laminated together in which security elements 22 are incorporated.
  • the carrier layer 32 can be made of paper (especially for banknotes) based on natural and / or synthetic fibers or in any other material suitable for forming a document substrate.
  • the substrate 32 is substantially rigid. However, and particularly in the case of the passport, the substrate 32 may be relatively flexible to facilitate its insertion into a booklet.
  • the sensitive layer 26 can also form the carrier layer of the support 12.
  • the security ink forming the layer 28 is a liquid crystal ink, for example of semi-transparent nematic or cholesteric type.
  • a security ink has the advantage of changing color depending on the angle of observation and to change color by observation by means of a polarizing filter.
  • liquid crystal ink of the OASIS® brand marketed by SICPA or the Securalic LC® brand marketed by MERCK By way of example, mention may be made of liquid crystal ink of the OASIS® brand marketed by SICPA or the Securalic LC® brand marketed by MERCK.
  • the security layer 28 and the carrier layer 32 are insensitive to laser radiation.
  • laser-insensitive means a layer through which a laser beam passes substantially without damage, as opposed to “sensitive to laser radiation”, which means that the crossing of the layer causes a marking the layer as ablation, carbonization, etc.
  • the marking of the sensitive layer 26 is performed through the security layer 28 to form a hollow surface profile on the face 26A of the layer 26 located opposite of the security layer 28. This has the advantage of producing a well-marked modulation of light intensity.
  • the security layer 28 is also sensitive to laser radiation and the carrier layer 32, on the other hand, is insensitive. In this case, the laser marking is then carried out through the carrier layer 32.
  • the sensitive layer 26 is at least translucent at the predefined wavelength of observation so that the variable depth profile of the sensitive layer 26 is observable by translucency through this layer. 26 and the security layer 28.
  • the sensitive layer 26 has optical properties that differ in a vertical direction of the support 12.
  • the sensitive layer 26 comprises at least two sub-layers 40A, 40B superimposed on each other and made of materials having distinct optical properties.
  • the sensitive layer 26 comprises at least two sub-layers 40A, 40B superimposed on each other and made of materials having distinct optical properties.
  • the first sublayer 40A is formed by a first ink layer producing a first variable optical effect and the second sublayer 40B is formed by a second ink layer producing a second variable optical effect.
  • the first or second optical effect appears.
  • the sun 42 thus comprises a core 44 and spokes 46, the core 44 having concentric rings having a second optical effect bonded to the second sublayer 40B and the spokes 46 have a first optical effect related to the first sublayer 40A .
  • the core 44 has a tonal gradient corresponding to a variable depth profile of the sublayer 40B.
  • the first upper sublayer 40A is formed by depositing a layer of a first ink sensitive to iridescent laser radiation or to a variable optical effect, or else to a metallic effect (effect silver, gold or copper). The presence of this upper sub-layer makes it possible to accentuate the intensity modulation obtained.
  • This upper sublayer is deposited by any desired printing technique, chosen for example from screen printing, pad printing, flexography, offset, intaglio, letterpress and / or gravure printing.
  • the lower sublayer 40B is formed by a substantially opaque white ink layer.
  • the support 12 incorporates a security element 22 embedded in the support 12 and which is revealed by ablation of the sensitive layer 26 to the right of this security element 22.
  • the security element 22 embedded in the support comprises an impression 48 on a face 32A of the carrier layer 32 facing the sensitive layer 26.
  • the printed element 48 comprises for example a discovery portion visible in reflected light and possibly a portion hidden by the non-vaporized sensitive layer 26, possibly visible in transmitted light (if the sensitive layer 26 is substantially translucent at the predefined wavelength) .
  • the hidden portion 50 and the uncovered portion 52 of the printed element 48 may for example complement each other in transmitted light to reveal information, etc.
  • the carrier layer 32 is preferably translucent.
  • a location of a substrate in the format of the desired document is predefined in a larger support, for example in a sheet of a plastics material essentially based on a polyolefin.
  • This sensitive layer 26 is preferably deposited by gravure printing.
  • the security ink layer 28 is deposited, preferably on a surface of the support in the form of a solid surface, this surface delimiting a predefined zone. to customize.
  • the substrate is cut for example according to the predefined location. At the end of this step, the substrate is ready for the customization step.
  • the desired pattern 24, for example photograph 16 is sampled to form a matrix of pixels ( figure 9 ).
  • a gray level is associated, this level of gray being itself associated with a depth of ablation of the layer 26 or density of points.
  • the predefined area of the support is scanned to mark the sensitive layer 26 by ablation ( figure 10 ).
  • the laser beam 30 is directed on the area and passes through the security layer 28 by the transparency of this layer 28 to the laser radiation to reach and mark the sensitive layer 26.
  • the power, number, and duration of pulses of the beam-emitting laser source 30 are adjusted to form a predefined thickness profile, each desired gray level corresponding to a depth of ablation or dot density.
  • the number of points of impact per pixel of the laser beam on the sensitive layer 26 is varied and / or the ablation depth of each of the points of impact of the pixel is varied.
  • the sensitive layer 26 is marked only from a face 26A.
  • the support 32 is chosen not sensitive to laser radiation.
  • the pattern 24 is observable through the security layer 28.
  • the resulting variable thickness profile produces a modulation of the observable light intensity in reflection on the sensitive layer 26, or even in transmission, when the sensitive layer 26 is translucent.
  • the invention it is possible to form a pattern 24 with a relatively great fineness of detail, such as a photograph, providing an additional level of security of the document against forgery. Indeed, to falsify such a document, it is necessary to remove the layer of security ink which is difficult or impossible to operate without creating irreversible damage to the document.

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  • Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Finance (AREA)
  • Accounting & Taxation (AREA)
  • Optics & Photonics (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Claims (14)

  1. Verfahren zum Aufbringen eines Motivs (24) mit einer Sicherheitstinte auf einer Unterlage (12), dadurch gekennzeichnet, dass, wobei die Unterlage (12) mindestens eine für eine Laserbestrahlung sensible Schicht (26) und eine Sicherheitstintenschicht (28) umfasst, die auf der sensiblen Schicht derart ausgebildet ist, dass die sensible Schicht (26) durch die Sicherheitsschicht mindestens in einer vorbestimmten Wellenlänge sichtbar ist, das Verfahren einen Markierungsschritt der sensiblen Schicht (26) mit einem Laserstrahl (30) durch Abtragen dieser Schicht (26) an einer Vielzahl von Auftreffpunkten des Strahls (30) auf die Schicht (26) umfasst, um ein vorbestimmtes Dickenprofil dieser Schicht (26) derart zu bilden, dass dieses Dickenprofil eine Modulierung der Lichtintensität erzeugt, die das Motiv, das durch die Sicherheitsschicht in der vorbestimmten Wellenlänge sichtbar ist, reproduziert.
  2. Verfahren nach vorangehendem Anspruch, wobei, wobei die Sicherheitsschicht (28) gegenüber der Strahlung unsensibel ist, der Laserstrahl (30) auf die Unterlage (12) gerichtet wird, sobald die Sicherheitsschicht (28) aufgebracht ist, und die Markierung der sensiblen Schicht (26) durch die Sicherheitsschicht (28) erfolgt.
  3. Verfahren nach dem einen oder dem anderen der vorangehenden Ansprüche, wobei der Laserstrahl (30) von einer Quelle gesendet wird, deren Impulse hinsichtlich Intensität und Dauer einstellbar sind, um das Motiv (24) gemäß dem vorbestimmten Dickenprofil auszubilden, wobei die Intensität, die Anzahl und/oder die Dauer der Impulse der Quelle des Laserstrahls geändert werden.
  4. Verfahren nach einem der vorangehenden Ansprüche, wobei, wobei das Motiv (24) in eine Pixelmatrix zerlegt ist, wobei jedes Pixel einem Graustufenniveau einer vorbestimmten Graustufenniveauskala zugeordnet ist, die Anzahl der Auftreffpunkte je Pixel des Laserstrahls auf der sensiblen Schicht (26) variiert werden und/oder die Abtragtiefe jedes Auftreffpunkts des Pixels variiert wird, um das Graustufenniveau von einem Pixel zum anderen zu variieren.
  5. Verfahren nach einem der vorangehenden Ansprüche, wobei die Sicherheitsschicht (28) auf die Unterlage (12) in Form einer Volltonfläche aufgebracht wird, beispielsweise durch Siebdruck, Flexodruck, Offset, Tiefdruck, Tampondruck, Typographie und/oder Heliogravüre.
  6. Verfahren nach einem der vorangehenden Ansprüche, wobei die sensible Schicht (26) von einer Tintenschicht gebildet ist, die Sicherheitstracer wie fluoreszierende Partikel, Partikel mit einer Reaktion in einer vorbestimmten Wellenlänge und/oder thermochrome Partikel einschließt.
  7. Verfahren nach einem der vorangehenden Ansprüche, wobei die sensible Schicht (26) optische Eigenschaften hat, die gemäß einer vertikalen Richtung der Unterlage (12) unterschiedlich sind.
  8. Verfahren nach vorangehendem Anspruch, wobei die sensible Schicht (26) mindestens zwei übereinanderliegende Unterschichten (26A, 26B) umfasst, die in Materialien mit speziellen optischen Eigenschaften ausgebildet sind.
  9. Verfahren nach einem der vorangehenden Ansprüche, wobei die Sicherheitsschicht (28) in einem Material ausgebildet ist, das eine Tinte mit variablem optischem Effekt vom Typ mit Flüssigkeitskristallen umfasst.
  10. Verfahren nach einem der vorangehenden Ansprüche, wobei die Unterlage (12) mindestens eine andere sogenannte Trägerschicht aufweist, die ein Substrat der Unterlage (12) bildet und elastisch oder starr ist.
  11. Verfahren nach vorangehendem Anspruch, wobei, wobei die Unterlage (12) mindestens ein Sicherheitselement (22) einschließt, dieses Element mindestens zum Teil durch Abtragen der sensiblen Schicht (26) an dem Element (22) freigelegt wird.
  12. Sicherheitsdokument (10), das eine Unterlage (12) und ein von der Unterlage (12) getragenes Sicherheitselement (22) umfasst, dadurch gekennzeichnet, dass die Unterlage (12) mindestens eine gegenüber Laserstrahlung sensiblen Schicht (26) und mindestens eine als Sicherheitsschicht bezeichnete Sicherheitstintenschicht (28) umfasst, wobei das Sicherheitselement (22) ein Motiv (24) nach einem Verfahren nach einem der vorangehenden Ansprüche umfasst.
  13. Dokument (10) nach vorangehendem Anspruch, wobei das Motiv (24) in Graustufenniveau wiedergegeben ist.
  14. Dokument (10) nach Anspruch 12 oder Anspruch 13, das aus einer Banknote, einem Pass oder einer Karte mit Mikroschaltung ausgewählt ist.
EP11172967.9A 2010-07-13 2011-07-07 Verfahren zur Aufbringung eines Motivs auf eine Unterlage mit Hilfe von Sicherheitstinte Revoked EP2407314B1 (de)

Applications Claiming Priority (1)

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FR1055712A FR2962684B1 (fr) 2010-07-13 2010-07-13 Procede de realisation d'un motif sur un support avec une encre de securite

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FR3022183B1 (fr) 2014-06-13 2016-07-29 Fasver Procede de fabrication d'un support de donnees multicouche a marquage de securite et pouvant etre marque par laser
FR3043940B1 (fr) * 2015-11-19 2018-01-05 Oberthur Technologies Dispositif de securite
CN108436276B (zh) * 2018-06-25 2020-11-13 广东工业大学 一种激光冲击压印方法及装置
CN114473225A (zh) * 2022-02-15 2022-05-13 南京先进激光技术研究院 一种无损式激光冲击打标装置及打标方法

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DE3840729A1 (de) 1988-12-02 1990-06-13 Gao Ges Automation Org Mehrschichtiger aufzeichnungstraeger und verfahren zum beschriften eines mehrschichtigen aufzeichnungstraegers
US5744168A (en) 1995-12-07 1998-04-28 The Procter & Gamble Company Methods and compositions for the prevention and treatment of gastrointestinal disorders
DE10329381A1 (de) 2003-06-30 2005-02-03 Kühne, Marco Verfahren und Vorrichtung zum Erzeugen eines dreidimensional wirkenden Bildes auf einem dünnen Substrat
WO2005108110A1 (de) 2004-05-05 2005-11-17 Giesecke & Devrient Gmbh Schichtartiges wertdokument mit farbgemisch in einer schicht
EP1918123A1 (de) 2006-10-31 2008-05-07 Maurer Electronics Gmbh Kartenförmiger Datenträger und Verfahren zu seiner Herstellung

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DE4447428C2 (de) * 1994-05-18 1997-09-11 Orga Kartensysteme Gmbh Verfahren zur Herstellung eines in eine Ausweiskarte einzubringenden Bildes
DE10006377A1 (de) * 2000-02-12 2001-08-23 Schreiner Etiketten Mit einem Laser beschriftetes Etikett sowie Verfahren und Vorrichtung zu seiner Herstellung
DE102005051416A1 (de) * 2005-10-27 2007-05-03 Mühlbauer Ag Identifikationskarte mit Bild und Herstellungsverfahren hierfür
DE602006018792D1 (de) * 2006-03-17 2011-01-20 Datacard Corp Ausweisdokument mit überlagerten bildern und verfahren zu dessen herstellung
US10112434B2 (en) * 2008-05-16 2018-10-30 Entrust Datacard Corporation Shadow image security feature

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Publication number Priority date Publication date Assignee Title
DE3840729A1 (de) 1988-12-02 1990-06-13 Gao Ges Automation Org Mehrschichtiger aufzeichnungstraeger und verfahren zum beschriften eines mehrschichtigen aufzeichnungstraegers
US5744168A (en) 1995-12-07 1998-04-28 The Procter & Gamble Company Methods and compositions for the prevention and treatment of gastrointestinal disorders
DE10329381A1 (de) 2003-06-30 2005-02-03 Kühne, Marco Verfahren und Vorrichtung zum Erzeugen eines dreidimensional wirkenden Bildes auf einem dünnen Substrat
WO2005108110A1 (de) 2004-05-05 2005-11-17 Giesecke & Devrient Gmbh Schichtartiges wertdokument mit farbgemisch in einer schicht
EP1918123A1 (de) 2006-10-31 2008-05-07 Maurer Electronics Gmbh Kartenförmiger Datenträger und Verfahren zu seiner Herstellung

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EP2407314A1 (de) 2012-01-18
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