EP2580065B1 - Verfahren zur personalisierung von latenten eingbetteten bildern und damit hergestelltes dokument - Google Patents

Verfahren zur personalisierung von latenten eingbetteten bildern und damit hergestelltes dokument Download PDF

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Publication number
EP2580065B1
EP2580065B1 EP11714352.9A EP11714352A EP2580065B1 EP 2580065 B1 EP2580065 B1 EP 2580065B1 EP 11714352 A EP11714352 A EP 11714352A EP 2580065 B1 EP2580065 B1 EP 2580065B1
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Prior art keywords
image
latent image
subpixels
pixels
sub
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EP11714352.9A
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English (en)
French (fr)
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EP2580065A1 (de
Inventor
Jean-Pierre Lazzari
Jean Marc Lazzari
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    • 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
    • B42D25/415—Marking using chemicals
    • B42D25/42—Marking using chemicals by photographic processes
    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/267—Marking of plastic artifacts, e.g. with laser
    • 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
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/34—Multicolour thermography
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/41—Marking using electromagnetic radiation

Definitions

  • the present invention relates to a method of personalizing embedded latent images. It finds applications especially in credit cards or other official documents (identity, subscription, etc.).
  • the invention relates more particularly to the personalization of latent images protected by a transparent mechanical protection.
  • some devices provide a latent image consisting of an organic layer, monochrome or a metal layer. These layers are coated with a transparent protective layer.
  • the personalization that is to say the formation of the final image, is performed by a laser beam that burns the organic layer or engraves the metal layer, showing a certain contrast between the parts treated by the laser beam, and untreated parts. If these devices are very simple, they prohibit color, which greatly limits their application.
  • the patent FR 2451081 proposes the personalization of a latent image coated under a protective layer, by the use of micro capsules which by mechanical pressure, show different colors. If this device seems interesting in some aspects, it does not allow to show a quality image. Moreover, the application of the mechanical force necessary for the change of color, is incompatible with shapes or patterns of small size, essential to obtain a sufficient resolution of the desired image.
  • US-A-5,364,829 discloses an information recording and erasing medium of the recorded information reversibly by applying heat or light radiation onto a recording medium.
  • the recording medium comprises on a substrate (1): an optical reflection layer (2), a recording optical absorption layer (3 or 4) and a protective layer (6).
  • the absorption layer (3, 4) contains segments (41 R, 41 V, 41 B, 41 BK) colored according to the primary colors (R, G, B) and black (41 BK). By supplying heat, the crystallo-organic particles of the colored segments change their crystalline state. The light transmission of the recording layer is then modified.
  • the object of the present invention is to overcome these disadvantages by proposing a method of personalizing a recessed latent image, with a view to obtaining a final high quality and low cost color image by laser treatment on a latent image. of particular structure.
  • the subject of the invention is a method of personalizing a latent image embedded in a transparent protective mechanical layer.
  • the method consists in forming a latent image consisting of sub-pixels printed with primary colors uniformly distributed, these colors being reflective, then to reveal gray levels of a final image by a modulated emission of a laser beam on the sub-pixels for producing dark non-reflecting surfaces covering part or all of the surface of each sub-pixel.
  • the invention also relates to the document comprising an image produced according to the method above.
  • the image being arranged under a mechanical protection layer
  • the embedded image is formed of sub-pixels which have printed surfaces with primary reflective colors and are regularly distributed on a support, these surfaces being covered with non-reflective surfaces. dark.
  • the invention thus proposes to make, during the mass production of the image support object, which may be a credit card, a latent image, deposited on this support and mechanically protected by a transparent layer, this image latent being printed according to the same manufacturing processes as those used for the standard manufacture of credit cards. At this stage of production, all latent images are identical and appear as white. Then in a second step, a laser beam, through the transparent protective layer, transforms the latent image into a personalized final color image.
  • the image support object which may be a credit card
  • the latent image consists of small surfaces with primary colors (RGB): Red, Green and Blue, surfaces that will be called "sub pixels", each set (triplet) sub pixels (RGB) forms a pixel of the image.
  • RGB primary colors
  • These sub-pixels are printed by inkjet, or any other technique known to those skilled in the art during the mass production of the carrier object, which may be a credit card or other identity document.
  • This latent image, formed of regularly distributed sub pixels, is identical for all the objects of the same series. The latent image is then mechanically protected by a transparent coating.
  • the customization of the latent image is effected by a laser beam which, by thermal effect or photosensitive effect, reveals a dark color, preferably black, covering partially or totally the sub pixels surface.
  • the dark coloration being formed between the surface of the sub-pixels and the field of view, the recovery of the sub-pixels by this coloration appears in the field of view by reflection of the light on the sub-pixels.
  • the subject of the invention is a method of personalizing a latent image embedded in a transparent mechanical protection layer.
  • the latent image consists of a regular set of small primary-color printed surfaces, essentially including red, green, and blue colors.
  • the invention advantageously provides for regularly adding small white areas. Each small surface constitutes a sub-pixel of the image, and a set (quadruplet) of sub-pixel red, green, blue and white constitutes a pixel of the image.
  • Each image can contain several million pixels, depending on the definition.
  • the sub-pixels are arranged regularly to form the latent image. They are printed by any technique known to those skilled in the art, such as inkjet, for example.
  • the support surface of the latent image may be flat or curved.
  • the colors of the sub pixels are reflective, in order to give the final image, once personalized, the maximum brightness in ambient light.
  • the latent image consisting of all the pixels described above, appears as a white surface to the observer.
  • the latent image is then coated with a transparent protective layer. All of these manufacturing steps, are common to all objects in the same series.
  • the customization is carried out by a laser beam which through the protective transparent layer, reveals non-reflecting surfaces, dark colors, preferably black, which more or less cover the surface of the sub-pixels thus forming the gray levels of the final custom color image.
  • the non-reflective surfaces made by the laser beam are obtained by thermal or photochromic effect.
  • the colored surface of each sub-pixel is carbonized in part or in whole by the laser beam.
  • the ink used to color the sub-pixels has thermochromic properties or photochromic properties, known to those skilled in the art who, under the influence of either a thermal effect or a radiation effect of the laser beam causes a non-reflecting, preferably black, coloration on the treated parts.
  • the figure 1 shows a credit card (11) on which, during its mass production, the latent image (12) has been printed. Any printing technique known to those skilled in the art can be used, including techniques commonly used to print the color patterns of credit cards.
  • the latent image (12) may be located on a flat portion of the credit card, or on a curved surface, or in relief, such as, for example, the raised portions of the credit card numbers.
  • the credit card is coated with a transparent protective layer like the current credit cards. At this level, standard credit card manufacturing processes are not modified.
  • the figure 2 shows the same credit card, including the latent image (11) of the figure 1 , has been customized, showing the final color image (21). If this image is a photo ID, it can preferably have the standardized dimensions of photo ID, 35mm by 45mm.
  • the figure 3 shows a detailed view of the latent image (12). It consists of small areas that we call “sub-pixels", regularly arranged. Each quadruplet of "sub-pixels" (31) of red color, (32) of green color, (33) of blue color, and (34) of white color form a pixel which may have a square shape according to the example of the figure 3 .
  • the "subpixels” can also be aligned forming monochrome bands in the previously described colors.
  • the ink used to print the "sub-pixels” is preferably reflective.
  • the "sub pixels” are squares of 16 ⁇ m side.
  • the pixel comprising the four "sub-pixels” according to this example has a square shape of 32 ⁇ m on the side.
  • the figure 4 shows the section of a credit card (11) comprising the latent image (12), the assembly being coated with the transparent protective layer (41).
  • the figure 5 shows a credit card (11) comprising the latent image (12) coated with the protective layer (41).
  • a laser beam (51) scans the entire surface of the latent image (12) to customize it through the protective layer (41), showing the gray levels of the final image, by performing dark, preferably black, non-reflective surfaces that partially or wholly cover the surface of each "sub-pixel".
  • the gray levels are obtained by carbonization of the color of the subpixels.
  • other methods known to those skilled in the art, use photochromic or thermochromic colors, which under the influence of the wavelength of the laser beam, or under the thermal influence of the laser beam, make it possible to reveal a color dark, which reflects very little light.
  • the reproduction of an image for example a digital image, according to the invention, consists in producing by laser beam (51) the gray level of each pixel of the digitized image by partial or total darkening, in particular by darkening, of one or several sub pixels of each pixel of the reproduced image corresponding to a pixel of the digital image to be reproduced.
  • the surface area to be blackened above each subpixel corresponds to that of the image to reproduce in order to reconstruct the same level of gray as that of this image for each of its sub-pixels.
  • the figure 6 shows examples of gray levels on the four "sub pixels" (31), (32), (33), and (34) of a pixel.
  • the laser beam (51) of the figure 5 scan the latent image from left to right.
  • the impact of the laser beam on the surface of the "sub-pixel” (31) has generated a black surface (61) of 1 ⁇ m ⁇ 1 ⁇ m. Sweeping the "sub-pixels" from left to right for example, the laser beam, when the surface to be treated is larger, can leave a rectilinear trace (62) of 1 ⁇ m wide, and of length proportionate to the non-reflective surface required.
  • the non-reflecting surface has a dimension of 1 ⁇ m ⁇ 12 ⁇ m.
  • Other non-reflective surfaces (63) and (64) are shown on the "sub pixels” (33), and (34) respectively.
  • some "sub pixels” can be completely covered with non-reflective surface, or conversely not be covered at all.
  • each "sub-pixel” can be covered with 16 x 16 laser impacts, thus forming 256 gray levels per sub-pixel.
  • the identity photo of 35mm X 45mm will then consist of more than 6 million pixels.
  • the intensity of the laser beam is programmed according to the gray levels of the image to be reproduced. These gray levels are recorded with their address in a memory of a digital processing unit.
  • the predetermined scans are also recorded according to the image to be embedded on the document medium (global dimension, size of the sub-pixels, type of organization of the sub-pixels).
  • the unit controls the emission and displacement of the laser beam through suitable equipment, known to those skilled in the art, in order to reproduce the gray levels stored in a given image .

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Credit Cards Or The Like (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Claims (7)

  1. Verfahren zur Personalisierung eines eingebetteten latenten Bildes (12) unter einer transparenten mechanischen Schutzschicht (41), dadurch gekennzeichnet, dass es darin besteht, ein latentes Bild (12), das aus gedruckten Unterpixeln (31 bis 33) in den Primärfarben, welche gleichmäßig verteilt sind, besteht, auszubilden, wobei diese Farben reflektierend sind, anschließend Graustufen eines endgültigen Bildes (21) durch ein moduliertes Aussenden eines Laserstrahls (51) auf die Unterpixel (31 bis 33) zum Vorschein zu bringen, um nicht reflektierende dunkle Flächen (61 bis 64) herzustellen, welche die Fläche eines jeden Unterpixels (31 bis 34) teilweise oder ganz bedecken.
  2. Verfahren zur Personalisierung eines eingebetteten latenten Bildes unter einer transparenten mechanischen Schutzschicht, nach Anspruch 1, dadurch gekennzeichnet, dass zusätzlich zu den Unterpixeln in den Primärfarben (31 bis 33) Unterpixel mit weißer Farbe (34), die ebenfalls gleichmäßig verteilt sind, zugefügt werden, um die Pixel des latenten Bildes zu bilden.
  3. Verfahren zur Personalisierung eines eingebetteten latenten Bildes unter einer transparenten mechanischen Schutzschicht, nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die nicht reflektierenden Flächen mit dunkler Farbe (61 bis 64), welche die Fläche der Unterpixel teilweise oder ganz bedecken, durch Verkohlen der Unterpixel mittels des Laserstrahls (51) durch die transparente Schutzschicht (41) erhalten werden.
  4. Verfahren zur Personalisierung eines eingebetteten latenten Bildes unter einer transparenten mechanischen Schutzschicht (41), nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die nicht reflektierenden Flächen mit dunkler Farbe (61 bis 64), welche die Fläche der Unterpixel teilweise oder ganz bedecken, durch thermochromen Effekt oder durch photochromen Effekt, unter dem Einfluss des Laserstrahls (51) durch die transparente Schutzschicht (41) erhalten werden.
  5. Dokument, in das ein endgültiges Bild (21), das durch das Verfahren nach einem der vorhergehenden Ansprüche erhalten wird, eingebettet ist, wobei das endgültige Bild (21) unter einer mechanischen Schutzschicht (41) angeordnet ist, dadurch gekennzeichnet, dass das eingebettete endgültige Bild (21) von gedruckten Unterpixeln, welche Flächen in den reflektierenden Primärfarben (31 bis 33) haben und auf einem Träger (11) gleichmäßig verteilt sind, gebildet ist, wobei diese Flächen von nicht reflektierenden dunklen Flächen (61 bis 63) bedeckt sind.
  6. Dokument nach dem vorhergehenden Anspruch, bei dem die nicht reflektierenden dunklen Flächen von schwarzer Farbe (61 bis 64) sind und die Unterpixel in den Primärfarben (31 bis 33) und auch weißer Farbe (34) sind, welche gleichmäßig verteilt sind.
  7. Dokument nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass die Oberfläche des latenten Bildes gekrümmt ist.
EP11714352.9A 2010-04-07 2011-03-10 Verfahren zur personalisierung von latenten eingbetteten bildern und damit hergestelltes dokument Active EP2580065B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1001415A FR2958777A1 (fr) 2010-04-07 2010-04-07 Dispositif de personnalisation d'images latentes encastrees
PCT/FR2011/000126 WO2011124774A1 (fr) 2010-04-07 2011-03-10 Procede de personnalisation d'images latentes encastrees et document realise

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Publication Number Publication Date
EP2580065A1 EP2580065A1 (de) 2013-04-17
EP2580065B1 true EP2580065B1 (de) 2014-08-06

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DE102019113431A1 (de) 2018-06-28 2020-01-02 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur Kennzeichnung einer Datenseite, insbesondere für ein Wert- und/oder Sicherheitsdokument
WO2020174153A1 (fr) 2019-02-28 2020-09-03 Idemia France Image couleur formee a partir d'un hologramme
EP3828000A1 (de) 2019-11-29 2021-06-02 IDEMIA France Sicherheitsdokument und dessen herstellungsverfahren, die ein individuell gestaltes bild auf der basis eines metallhologramm betreffen
WO2022112708A1 (fr) 2020-11-30 2022-06-02 Idemia France Image personnalisee formee a partir d'une couche metallique et d'un reseau lenticulaire
FR3122608A1 (fr) 2021-05-10 2022-11-11 Idemia France Fabrication d’une image à partir d’une structure holographique
FR3124000A1 (fr) 2021-06-15 2022-12-16 Idemia France Formation d’une image 3D à partir d’une structure lenticulaire
EP4389442A1 (de) 2022-12-22 2024-06-26 IDEMIA France Verfahren zur registrierung einer in einem sicherheitsdokument angeordneten subpixelmatrix

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FR2971972B1 (fr) * 2011-02-28 2013-03-08 Jean Pierre Lazzari Procede de formation d'une image laser couleur a haut rendement reflectif et document sur lequel une image laser couleur est ainsi realisee
FR2984217B1 (fr) 2011-12-19 2014-06-06 Jean Pierre Lazzari Procede de formation d'images laser couleur et document ainsi realise
FR2987156B1 (fr) * 2012-02-22 2015-01-30 Jean Pierre Lazzari Procede de formation d'une image laser couleur observable selon des couleurs variables, et document sur lequel une telle image laser couleur est ainsi realisee
FR2989627B1 (fr) 2012-04-24 2014-06-27 Jean Pierre Lazzari Procede de formation d'images laser couleur securisee et document ainsi realise
FR2989626B1 (fr) 2012-04-24 2014-06-27 Jean Pierre Lazzari Procede de formation d'image laser couleur aux couleurs degradees sur sa peripherie et document ainsi realise
DE102012211767B4 (de) * 2012-07-05 2014-03-13 Bundesdruckerei Gmbh Sicherheitsdokumentenrohling für eine farbige Laserpersonalisierung, Verfahren zur Herstellung eines Sicherheitsdokuments mittels farbiger Laserpersonalisierung eines Sicherheitsdokumentenrohlings und Sicherheitsdokument.
FR3006238B1 (fr) * 2013-05-28 2015-06-19 Oberthur Technologies Arrangement pour et procede de realisation d'une image en couleur
FR3013256B1 (fr) 2013-11-15 2016-01-15 Oberthur Technologies Procede de personnalisation visuelle d'un document d'identite comportant une image latente
FR3019495B1 (fr) * 2014-04-02 2021-07-09 Oberthur Technologies Dispositif de securite apte a eclaircir un motif a luminosite reduite
FR3027846B1 (fr) 2014-10-31 2019-04-19 Idemia France Document identitaire comportant un guillochis et un arrangement de pixels
FR3046112B1 (fr) 2015-12-23 2019-06-14 Idemia France Procede de realisation d'images selectivement visibles en variant l'angle d'observation par gravure au travers d'un reseau lenticulaire
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DE102018118473A1 (de) 2018-07-31 2020-02-06 Bundesdruckerei Gmbh Lichtsteuerfolie, Dokument mit einer Lichtsteuerfolie und Verfahren zur Herstellung eines Dokumentes mit einer Lichtsteuerfolie
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DE102019122586B4 (de) * 2019-08-22 2021-04-08 Bundesdruckerei Gmbh Mikrostrukturiertes transparentes Sicherheitselement
LU101475B1 (de) * 2019-10-21 2021-04-21 Phoenix Contact Gmbh & Co Informationsträger und Verfahren zur Herstellung eines Informationsträgers
EP3838610A1 (de) 2019-12-17 2021-06-23 Agfa Nv Lasermarkierbare artikel
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DE102019113431A1 (de) 2018-06-28 2020-01-02 Bundesdruckerei Gmbh Verfahren und Vorrichtung zur Kennzeichnung einer Datenseite, insbesondere für ein Wert- und/oder Sicherheitsdokument
WO2020174153A1 (fr) 2019-02-28 2020-09-03 Idemia France Image couleur formee a partir d'un hologramme
EP3828000A1 (de) 2019-11-29 2021-06-02 IDEMIA France Sicherheitsdokument und dessen herstellungsverfahren, die ein individuell gestaltes bild auf der basis eines metallhologramm betreffen
WO2021105582A1 (fr) 2019-11-29 2021-06-03 Idemia France Un document sécurisé avec une image personnalisee formee a partir d'un hologramme metallique et son procede de fabrication
FR3103736A1 (fr) 2019-11-29 2021-06-04 Idemia France Image personnalisée formée à partir d’un hologramme métallique
WO2022112708A1 (fr) 2020-11-30 2022-06-02 Idemia France Image personnalisee formee a partir d'une couche metallique et d'un reseau lenticulaire
FR3116761A1 (fr) 2020-11-30 2022-06-03 Idemia France Image personnalisée formée à partir d’une couche métallique et d’un réseau lenticulaire
FR3122608A1 (fr) 2021-05-10 2022-11-11 Idemia France Fabrication d’une image à partir d’une structure holographique
EP4088946A1 (de) 2021-05-10 2022-11-16 IDEMIA France Herstellung eines bilds aus einer holografischen struktur
FR3124000A1 (fr) 2021-06-15 2022-12-16 Idemia France Formation d’une image 3D à partir d’une structure lenticulaire
WO2022263772A1 (fr) 2021-06-15 2022-12-22 Idemia France Formation d'une image 3d a partir d'une structure lenticulaire
EP4389442A1 (de) 2022-12-22 2024-06-26 IDEMIA France Verfahren zur registrierung einer in einem sicherheitsdokument angeordneten subpixelmatrix
FR3144353A1 (fr) 2022-12-22 2024-06-28 Idemia France Procédé de recalage d’une matrice de sous-pixels agencée au sein d’un document de sécurité

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FR2958777A1 (fr) 2011-10-14
WO2011124774A1 (fr) 2011-10-13
EP2580065A1 (de) 2013-04-17

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