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EP3715141B1 - Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique - Google Patents

Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique Download PDF

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Publication number
EP3715141B1
EP3715141B1 EP20170202.4A EP20170202A EP3715141B1 EP 3715141 B1 EP3715141 B1 EP 3715141B1 EP 20170202 A EP20170202 A EP 20170202A EP 3715141 B1 EP3715141 B1 EP 3715141B1
Authority
EP
European Patent Office
Prior art keywords
graphic
brightness
document
photosensitive layer
partial
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.)
Active
Application number
EP20170202.4A
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German (de)
English (en)
Other versions
EP3715141A1 (fr
Inventor
Thomas Kramer
Werner Richter
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.)
Bundesdruckerei GmbH
Original Assignee
Bundesdruckerei GmbH
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Publication of EP3715141A1 publication Critical patent/EP3715141A1/fr
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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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • 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
    • B42D25/305—Associated digital information
    • 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
    • B42D25/309—Photographs
    • 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
    • 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

Definitions

  • the invention relates to a method for personalizing a document blank with a graphic for producing a document by means of an irradiation device and a device for personalizing a document blank.
  • a graphic such as a portrait of the document owner can be applied to the document for this purpose.
  • a graphic For applying a graphic
  • Color pigments are generated in the document blank by bombarding a photosensitive material with laser light. A material conversion takes place in the photosensitive material, whereby individual pixels can be generated at the point of impact of the laser.
  • a graphic can first be rasterized, the individual pixels of the graphic then being transferred to the document by individual laser pulses.
  • a polycarbonate layer or a polyvinyl chloride can be applied to the documents, to which an additive, which essentially consists of carbon chains, is mixed.
  • this layer is bombarded with a laser pulse, individual molecular chains can break open and carbon can be released. This manifests itself in a blackening of the layer in the area of the region hit by the laser pulse.
  • the gray level generated depends on the pulse energy.
  • Graphics are usually applied to a document line by line or column by column by means of laser engraving. This can lead to strong fluctuations in brightness between neighboring pixels within a row or column. For a laser that generates the pixels, this means that the pulse energy emitted must be varied greatly from pixel to pixel. In the case of inexpensive fiber lasers, for example, this can lead to the contours of the generated graphics being smeared, since the laser system cannot follow the rapid jumps in the required pulse energy while a line is being engraved.
  • Examples of the known methods and devices for personalizing a document blank are from DE102005032997-A1 known.
  • a "document” can be a value or security document.
  • a document is understood to mean paper-based and / or plastic-based documents, such as identity documents, in particular passports, ID cards, VISA and driver's licenses, vehicle registration documents, vehicle documents, company ID cards, health cards or other ID documents as well as chip cards, means of payment, in particular banknotes, bank cards and Credit cards, bills of lading or other proof of authorization.
  • a data memory for storing at least one attribute can be integrated into this.
  • a “document” is also understood here to mean, in particular, a portable electronic device which has at least one data memory for storing an attribute and a communication interface for reading out the attribute.
  • the document preferably has a secure memory area for storing the at least one attribute in order to prevent the attribute stored in the memory area from being changed in an unauthorized manner or from being read out without the authorization required for this.
  • the invention relates to a method, according to claim 1, for personalizing a document blank with a graphic for producing a document by means of an irradiation device.
  • the document blank has a photosensitive layer which is designed in such a way that at least one optically detectable parameter of the photosensitive layer changes when the photosensitive layer is exposed to electromagnetic radiation.
  • This can, for example, be a blackening or lightening of the photosensitive layer when exposed to laser light.
  • the change in the parameter for example the lightening or blackening, is scaled here with the energy introduced into the photosensitive layer by the electromagnetic radiation.
  • the electromagnetic radiation is provided by an irradiation device, the intensity of the radiation provided by the irradiation device being adjustable.
  • the irradiation intensity can be set continuously or in clearly defined steps.
  • a monochrome output graphic is provided.
  • the output graphic can be, for example, a portrait of the later document owner, or a logo or some other identification feature.
  • the term “monochrome” in this case can mean that the monochrome output graphic only has gray values or else different brightness values of a defined color.
  • an output graphic can also consist of a large number of brightness values of one shade of blue.
  • An information content of one byte can be assigned to a single pixel, which corresponds to 255 different brightness values.
  • the brightness values of the monochrome output graphic are now reduced to at least two brightness levels.
  • this process is known as grayscale reduction.
  • a uniform brightness value is assigned to all brightness values within a defined interval.
  • the result of this process step is a reduced output graphic which only contains pixels whose brightness value corresponds to one of the uniform brightness values of the brightness levels.
  • this reduced output graphic is divided into partial graphics, each of the partial graphics only having pixels of the same brightness. If, for example, five brightness levels were selected in the previous process step, then five partial graphics are obtained accordingly.
  • each partial graphic is then each completely mapped onto the document blank by applying electromagnetic radiation to the photosensitive layer of the document blank.
  • Each brightness level is assigned an energy to be introduced into the photosensitive layer by the electromagnetic radiation. Since each partial graphic only contains pixels of the same brightness, i.e. pixels of a single brightness level, when a partial graphic is displayed, the photosensitive layer of the document blank is only exposed to the energy to be introduced which is assigned to the brightness level of the partial graphic.
  • the brightness levels are selected so that each brightness level contains the same number of brightness values.
  • the method described above has the advantage that the output power of the irradiation device does not have to be changed while an individual partial graphic is being applied. This eliminates the waiting times that are usually necessary, which arise as a result of the change in the energy of the electromagnetic radiation emitted by the irradiation device.
  • irradiation devices can also be used to implement the method according to the invention, which react only very slowly to a necessary change in the emitted energy, since such a changeover is only necessary once, namely only before the start of the display of a partial graphic. The entire partial graphic can then be applied to the document blank with one and the same setting of the irradiation device.
  • the method according to the invention can prevent a smearing effect from occurring when the brightness level jumps from one pixel to an adjacent pixel due to the irradiation device reacting too slowly to a necessary change in the output power.
  • a sharper image could be generated when using an inexpensive irradiation device.
  • a partial graphic does not necessarily have to be all pixels of a brightness level that are present in the entire reduced output graphic.
  • a partial graphic can, for example, also consist of all image points of a brightness level in a line of the reduced output graphic.
  • the irradiation device runs through an image line several times in succession when imaging the partial graphics, with only image points of a partial graphic, that is to say a brightness level, being applied during a pass through the image line.
  • the irradiation device can be a laser source.
  • the laser source is preferably configured in such a way that it can emit laser pulses of defined energy.
  • a laser pulse can be a light pulse with a pulse energy between 0.01 mJ and 1 mJ and a pulse width of approximately 3 ns to 250 ns. Such a pulse has peak powers of approx. 10 kW to 50 kW.
  • the wavelength of the light emitted here must be adapted to the requirements of the photosensitive layer. In laser engraving processes, wavelengths in the near infrared, around 1064 nm, are common.
  • each pixel of an applied graphic can then be generated by applying a laser pulse of defined energy to the photosensitive layer.
  • a single laser pulse would be required to generate a pixel of the first brightness level, while three laser pulses would be required to generate a pixel of the desired brightness level for a pixel of the third brightness level.
  • the output power of the laser can remain constant with each pulse, regardless of the brightness level to be generated.
  • the laser source can be a fiber laser which, for example, consists of a pulse source and a downstream fiber amplifier.
  • a fiber laser which, for example, consists of a pulse source and a downstream fiber amplifier.
  • MOPA Master Oscillator Power Amplifier
  • the pump power with which the fiber amplifier is pumped can be kept constant during the complete imaging of a partial graphic.
  • the pulse source only has to be made to emit a single laser pulse. This is then amplified to the power level defined by the pump power, which is kept constant, and generates a pixel of defined brightness when it hits the photosensitive layer.
  • the at least two brightness levels of the reduced output graphic are individually defined for each graphic to be applied or are selected to be the same for each graphic.
  • the decision whether to adapt the brightness levels to the graphics to be applied or to keep them constant over a large number of graphics depends on the graphics to be applied. If, for example, it is a graphic in which the various brightness values of the individual pixels are evenly distributed over the entire spectrum of possible brightness values, the brightness levels can be selected in such a way that the number of pixels in the applied graphic is evenly distributed over the brightness level. If, for example, it is a graphic of 1000 pixels and four brightness levels were selected, then in this embodiment the limits of the brightness levels would have to be selected such that 250 pixels fall into each brightness level.
  • the brightness levels are selected such that each brightness level contains the same number of brightness values.
  • a pixel can assume, for example, 255 different brightness values (1 byte). If, following this embodiment, one were to define four brightness levels, these would have to be selected such that 64 or 63 brightness values are contained within each brightness level.
  • the two aforementioned options for defining the brightness levels would be particularly suitable if a number of brightness levels are to be retained for several graphics. This could reduce the process time for generating a graphic, since the brightness levels do not have to be defined individually for each graphic.
  • the brightness values of the pixels of a graphic are not evenly distributed over all available brightness values, but that, for example, certain brightness values of the individual pixels are accumulated.
  • it can according to an embodiment of the invention It may be advantageous to first create a brightness spectrum of the graphic, the number of pixels present in the output graphic per brightness value being mapped in the brightness spectrum.
  • a clustering method can then be applied to this brightness spectrum in order to determine clusters in the brightness spectrum.
  • the later used brightness levels can be adapted to precisely these ascertained clusters of brightness values, for example by centering the interval of the brightness values which are assigned to a brightness level around an cluster and selecting the brightness value which is assigned to the brightness level according to the maximum of the clustering will.
  • the selection of the limits of a brightness level, as well as the selection of the brightness value assigned to the brightness level, can also be otherwise adapted to the shape of the accumulations of the image points. This could be necessary, for example, if clusters do not follow a symmetrical distribution (Gaussian distribution), but are designed to be highly asymmetrical.
  • the reduced output graphic can be prepared by dithering and / or posterization before it is divided into partial graphics.
  • edges of the graphic between the partial images of the brightness levels can be smoothed, so that an improvement in the image quality is achieved compared with the original on which the graphic is based.
  • the applied graphic is the negative of the underlying output graphic.
  • a photosensitive layer can be used which, when exposed to electromagnetic radiation, does not become darker but rather lighter. This could have the advantage that after the graphic has been generated, no further changes can be made to the graphic by blackening individual pixels. For example, a darker pixel can always be added to a graphic with a positive, but it is not possible to blacken an already faded pixel with a negative.
  • a further embodiment provides that those areas of the photosensitive layer which are outside the edges of the applied graphic are exposed to electromagnetic radiation so that they are bleached. In this way it can be prevented that changes can be made subsequently in these edge areas.
  • a positive of the graphic in addition to the negative of the graphic, can also be applied to the document blank. This could further increase the security of the document against forgery, since it can be checked at any time whether the negative matches the positive shown or whether discrepancies between the two graphics can be determined.
  • the document blank has a multilayer document body, it being possible for the layers to be plastic and / or paper and / or metal and / or polymer layers.
  • the document blank has a chip with a memory area and an interface in one of the layers, the interface enabling access to the memory area of the chip.
  • the output graphic applied to the document can be stored in this memory area of the chip as part of the method, with the stored output graphic being able to be read out via the interface, for example, when the document is checked. In this way, the security of the document against forgery can be further increased, since the negative, the positive and the original of the graphic can be compared with one another when the authenticity of the document is checked.
  • the storage means contain an assignment of the brightness levels to an energy to be introduced into the photosensitive layer.
  • the processor means access the storage means in order to determine the energy to be introduced assigned to the brightness level of a partial graphic and then to control the control device of the irradiation device in such a way that the photosensitive layer is supplied with the energy to be introduced assigned to the brightness level, the brightness levels as follows are selected so that each brightness level contains the same number of brightness values.
  • the device further includes a feeding device and a stacking device, wherein the feeding device contains a plurality of document blanks and is designed to feed the document blanks to the irradiation device for exposure to electromagnetic radiation and wherein the stacking device is designed to receive personalized document blanks.
  • the stacking device is also designed to receive faulty documents separately from the personalized document blanks.
  • FIG. 3 shows a block diagram of a device 100 for personalizing a blank document 102 with a graphic.
  • the device 100 consists essentially of an irradiation device 104 and a conveying device 106.
  • the irradiation device 104 contains a laser source 108, the laser source 108 being operatively connected to a laser control 110. Furthermore, the irradiation device 104 contains processor means 112 as well as storage means 114 and an interface 116.
  • the laser control 110 furthermore contains a program module 118 which contains machine-readable code, through the execution of which the laser control 110 controls the laser source 108.
  • the laser source 108 is connected to a processing head 122 via coupling means, such as, for example, a fiber coupling 120.
  • the processing head 122 is designed to decouple the laser radiation generated by the laser source 108 and fed to the processing head 122 via the fiber coupling 120, so that a targeted beam 124 can be emitted onto the card blank 102.
  • the beam 124 can be aligned, for example, by an arrangement of deflecting mirrors, the alignment of which is controlled by piezoelectric or electro-actuator elements.
  • the light deflection system used in the processing head 122 can be a galvanometer scanner.
  • the document blank 102 can also be displaced relative to the processing head 122.
  • the processor means 112, the storage means 114 and the interface 116 do not necessarily have to be part of the irradiation device 104. It is also possible to outsource these elements as long as they are operatively connected to the irradiation device 104.
  • the processor means 112, the storage means 114 and the interface 116 can be part of a separate computer system which is connected to the irradiation device in a wired or wireless manner.
  • the initial graphic is first displayed via the interface 116 read in.
  • the output graphic can be both a monochrome output graphic and an initially polychrome output graphic, which is then monochromatized.
  • FIG. 2a such an output graphic 202 is shown as an example.
  • the output graphic 202 read in via the interface 116 is initially stored in the storage means 114.
  • the output graphic 202 is then prepared by the processor 212 by executing a corresponding program so that it can be applied to the blank card 102. For this purpose, at least two brightness levels of the monochrome output graphic 202 are first defined.
  • all pixels of the output graphic 202 are then assigned to one of the brightness levels on the basis of their brightness value, and a fixed new brightness value is assigned to all pixels of a brightness level.
  • This process is known as grayscale reduction in the context of a grayscale image.
  • the result of this process is a graphic in which only pixels of a defined number of brightness values are present.
  • An example is in Figure 2b a graph 204 reduced in gray level is shown.
  • the graphic 204 was also subjected to an image improvement after the gray level reduction had been carried out by means of dithering.
  • the reduced gray level graphic 204 is converted into partial graphics by the processor 112, which are shown in FIG Figure 2c are exemplarily shown, disassembled.
  • Each of the partial graphics 206, 208, 210 and 212 only contains Pixels of one and the same brightness level.
  • partial graphic 206 contains only pixels with a very light gray tone
  • partial graphic 208 only pixels with a medium gray tone
  • partial graphic 210 only pixels with a dark gray tone
  • partial graphic 212 only contains pixels that are black.
  • the partial graphic which only contains white pixels is not shown here.
  • the partial graphics 206, 208, 210 and 212 generated in this way are then stored in the memory 114.
  • the program module 118 By executing the program module 118, the partial graphics 206, 208, 210 and 212 are successively transferred to the card blank 102 in that the laser control 110 controls the laser source 108 accordingly.
  • the processing head 122 aligns the beam 124 one after the other with the positions of the pixels to be generated on the card blank 102 and a laser pulse is emitted at the targeted image point on the card blank 102 by controlling the laser source 108 via the fiber coupling 120 and the processing head 122.
  • a laser pulse is emitted at the targeted image point on the card blank 102 by controlling the laser source 108 via the fiber coupling 120 and the processing head 122.
  • an image point of the desired gray level is generated at the point of impact of the laser pulse on the photosensitive layer. This is carried out one after the other for all image points of the partial graphic to be mapped. Only when the partial graphic is completely mapped on the card blank 102 is the next partial graphic loaded and mapped analogously on the card blank.
  • the output power of the laser source is first adapted to the gray level of the pixels to be generated. If, for example, a partial graphic with darker pixels is to be generated after the previously applied partial graphic, the output power of the laser must be increased accordingly will.
  • the reduced graphic 204 can be transferred to the blank card 102 in this way.
  • the generated document can be removed from the processing area by the conveyor device 106. Subsequently, a new document blank 102 can be positioned under the processing head 122 of the irradiation device 100 by the conveying device 106, so that the personalization process can be run through again.
  • the conveying device 106 can feed the documents that have already been processed to a stacking device (not shown).
  • the conveying device 106 can be designed in such a way that, in the event of an incorrect mapping of the output graphic, it feeds the processed document blank 102 to a different tray than the document blank 102 on which the mapping of the output graphics was correctly carried out.
  • FIG. 3a two possible brightness spectra of a graphic to be displayed are shown as an example.
  • a brightness spectrum 302 of a graphic is shown in which the number of pixels which have a certain brightness value is evenly distributed over all brightness values.
  • the brightness values of the individual pixels are shown in the brightness spectrum 302 on the x-axis, while the number of pixels per brightness value is plotted on the y-axis. Since this is an exemplary representation, no further axis labeling has been used.
  • brightness levels must first be defined. As has already been explained above, this can be done, for example, by dividing the brightness spectrum into subregions of equal size.
  • Fig. 3a four intervals are shown as examples, each corresponding to a brightness level.
  • the brightness value assigned to the corresponding interval is assigned to each pixel whose brightness value falls within one of the intervals assigned.
  • the brightness value H1 is assigned to all pixels whose brightness values lie in interval A, while all pixels whose brightness values lie in interval C receive the brightness value H3:
  • the choice of brightness values H1, H2, H3 and H4 can be adjusted so that an optimized contrast of the generated image results. Is like in Fig. 3a If the number of pixels is shown evenly distributed over the brightness values, the brightness value H1 of the interval A can be selected centered within the interval A, for example.
  • the number of pixels is very inhomogeneously distributed over the various brightness values.
  • the brightness spectrum 304 in Figure 3b be the spectrum of a three-color flag.
  • it can make sense not to select the brightness levels or the intervals for the brightness values to be equidistant, but to adapt them to accumulations in the brightness spectra.
  • it can be useful to choose the intervals E, F, and G so that each of the intervals contains one of the accumulation areas, which are represented by the strong increase in the number of pixels per brightness value.
  • the individual intervals differ greatly in their width and that the brightness value assigned to an interval is also not centered within the interval.
  • the selection of the intervals on which the brightness levels are based can always be adapted to the underlying output graphic in such a way that the contrast and the image quality of the graphic generated on the document blank is optimized.
  • the Fig. 4 shows a block diagram of a document 400 generated by the method according to the invention.
  • the document 400 includes a negative 402 as well as a Positive 404 of an initial graphic to be applied to the document.
  • the graphic can be a portrait of the document owner.
  • the document 400 also contains a chip 406 with a memory area 408 and an interface 410. Via the interface 410, for example, the image on which the positive 402 and negative 404 are based can be stored in the memory area 408 of the chip 406 or read from it.
  • the negative 402 can be compared with the positive 404 and the original of the graphic stored in the memory area 408.

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  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Electromagnetism (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Credit Cards Or The Like (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Electronic Switches (AREA)
  • Laser Beam Printer (AREA)

Claims (15)

  1. Procédé de personnalisation d'une ébauche de document munie d'un graphisme pour la production d'un document au moyen d'un dispositif d'irradiation, dans lequel l'ébauche de document présente une couche photosensible, dans lequel, lors de la soumission à un rayonnement électromagnétique, au moins un paramètre détectable de manière optique de la couche photosensible se modifie, dans lequel la modification du paramètre est rendue proportionnelle à l'énergie apportée dans la couche photosensible, dans lequel le dispositif d'irradiation fournit un rayonnement électromagnétique, dans lequel l'énergie du rayonnement fourni par le dispositif d'irradiation est réglable, avec les étapes suivantes :
    • la fourniture d'un graphisme de départ monochrome,
    • la réduction des valeurs de luminosité du graphisme de départ monochrome jusqu'à au moins deux échelons de luminosité afin d'obtenir un graphisme de départ réduit,
    • la subdivision du graphisme de départ réduit en graphismes partiels, où chacun des graphismes partiels ne présente que des points d'image de même luminosité,
    • respectivement, la représentation totale des graphismes partiels individuels sur l'ébauche de document par la soumission de la couche photosensible au rayonnement électromagnétique,
    dans lequel une énergie à apporter dans la couche photosensible est associée à chaque échelon de luminosité, et dans lequel la couche photosensible est soumise à l'énergie à apporter associée à l'échelon de luminosité du graphisme partiel lors de la représentation d'un graphisme partiel,
    dans lequel les échelons de luminosité sont sélectionnés de telle manière que chaque échelon de luminosité contienne le même nombre de valeurs de luminosité.
  2. Procédé selon la revendication 1, dans lequel, dans le cas du dispositif d'irradiation, il s'agit d'une source laser, dans lequel la source laser fournit des impulsions laser d'énergie définie.
  3. Procédé selon la revendication 2, dans lequel chaque point d'image du graphisme appliqué est créé par la soumission de la couche photosensible à une impulsion laser d'énergie définie.
  4. Procédé selon la revendication 2 ou la revendication 3, dans lequel, dans le cas de la source laser, il s'agit d'un laser de type fibre et dans lequel la puissance de pompage, avec laquelle le laser de type fibre est pompé, reste constante pendant la représentation totale d'un graphisme partiel.
  5. Procédé selon l'une des revendications précédentes, dans lequel les au moins deux échelons de luminosité du graphisme de départ monochrome réduit sont définis pour chaque graphisme appliqué de manière individuelle et dans lequel les au moins deux échelons de luminosité du graphisme de départ monochrome sont identiques pour chaque graphisme.
  6. Procédé selon l'une des revendications précédentes, dans lequel le graphisme de départ réduit est préparé par un tramage et/ou une postérisation avant la subdivision du graphisme de départ réduit en graphismes partiels.
  7. Procédé selon l'une des revendications précédentes, dans lequel, dans le cas du graphisme appliqué, il s'agit du négatif du graphisme de départ.
  8. Procédé selon la revendication 7, dans lequel la couche photosensible s'étend sur une surface de l'ébauche de document plus importante que le graphisme appliqué, où le procédé contient en outre la soumission de zones de la couche photosensible, lesquelles se situent en dehors des bords du graphisme appliqué, au rayonnement électromagnétique.
  9. Procédé selon l'une des revendications précédentes, dans lequel la modification de paramètres détectables de manière optique de la couche photosensible n'est pas proportionnelle de manière linéaire avec l'énergie apportée.
  10. Procédé selon l'une des revendications précédentes 7 à 9, dans lequel, outre le négatif du graphisme, également un positif du graphisme est appliqué sur l'ébauche de document.
  11. Procédé selon l'une des revendications précédentes, dans lequel l'ébauche de document présente un corps de document à plusieurs couches, dans lequel, dans le cas des couches, il s'agit de couches en matière plastique, et/ou en papier, et/ou en métal, et/ou en polymère.
  12. Procédé selon l'une des revendications précédentes, dans lequel l'ébauche de document présente une puce avec une zone de mémoire, ainsi qu'une interface, dans lequel l'interface permet un accès à la zone de mémoire de la puce, où le procédé contient en outre l'enregistrement du graphisme de départ dans la zone de mémoire de la puce.
  13. Dispositif de personnalisation d'une ébauche de document munie d'un graphisme pour la production d'un document au moyen d'un dispositif d'irradiation permettant la fourniture d'un rayonnement électromagnétique, avec un dispositif de commande pour le dispositif d'irradiation, dans lequel l'intensité du rayonnement fourni par le dispositif d'irradiation est réglable par le dispositif de commande, dans lequel le dispositif d'irradiation est conçu pour la soumission d'une ébauche de document munie d'une couche photosensible à un rayonnement électromagnétique , dans lequel, lors de la soumission au rayonnement électromagnétique, au moins un paramètre détectable de manière optique de la couche photosensible se modifie, dans lequel la modification du paramètre est rendue proportionnelle à l'énergie apportée dans la couche photosensible, dans lequel le dispositif comprend en outre un dispositif de traitement de données avec des moyens processeurs, des moyens mémoires et une interface, dans lequel l'interface est conçue pour lire un graphisme de départ monochrome, dans lequel les moyens processeurs sont conçus pour :
    • la réduction des valeurs de luminosité du graphisme de départ monochrome jusqu'à au moins deux échelons de luminosité afin d'obtenir un graphisme de départ réduit,
    • la subdivision du graphisme de départ réduit en graphismes partiels, où chacun des graphismes partiels ne présente que des points d'image de même luminosité,
    • la commande du dispositif de commande du dispositif d'irradiation de telle manière que les graphismes partiels individuels sont respectivement représentés totalement sur l'ébauche de document par la soumission de la couche photosensible au rayonnement électromagnétique,
    dans lequel les moyens mémoires contiennent une association des échelons de luminosité à une énergie à apporter dans la couche photosensible, et dans lequel, avant la représentation d'un graphisme partiel, les moyens processeurs déterminent l'énergie à apporter associée à l'échelon de luminosité du graphisme partiel par un accès aux moyens mémoires et pour commander le dispositif de commande du dispositif d'irradiation de telle manière que la couche photosensible soit soumise à l'énergie à apporter associée à l'échelon de luminosité,
    dans lequel les échelons de luminosité sont sélectionnés de telle manière que chaque échelon de luminosité contienne le même nombre de valeurs de luminosité.
  14. Dispositif selon la revendication 13, muni d'un dispositif d'approvisionnement et d'un dispositif d'empilement, dans lequel le dispositif d'approvisionnement contient une multiplicité d'ébauches de documents et est conçu pour amener les ébauches de documents du dispositif d'irradiation à être soumises au rayonnement électromagnétique et dans lequel le dispositif d'empilement est conçu pour réceptionner les ébauches de documents personnalisées.
  15. Dispositif selon la revendication 14, dans lequel le dispositif d'empilement est conçu en outre pour réceptionner des documents défectueux de manière séparée par rapport aux ébauches de documents personnalisées.
EP20170202.4A 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique Active EP3715141B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014211513.2A DE102014211513B4 (de) 2014-06-16 2014-06-16 Verfahren und Vorrichtung zur Personalisierung eines Dokumentenrohlings mit einer Grafik
EP15722106.0A EP3154793B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document comprenant un graphisme
PCT/EP2015/059194 WO2015193013A1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document comprenant un graphisme

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EP15722106.0A Division-Into EP3154793B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document comprenant un graphisme
EP15722106.0A Division EP3154793B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document comprenant un graphisme

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EP20170202.4A Active EP3715141B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique
EP15722106.0A Active EP3154793B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document comprenant un graphisme
EP21154723.7A Active EP3875284B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique
EP21154722.9A Active EP3875283B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique

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EP21154723.7A Active EP3875284B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique
EP21154722.9A Active EP3875283B1 (fr) 2014-06-16 2015-04-28 Procédé et dispositif de personnalisation d'une ébauche de document à l'aide d'un graphique

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CN (1) CN106457876B (fr)
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EP3613602A1 (fr) * 2018-08-23 2020-02-26 Covestro Deutschland AG Procédé amélioré pour la coloration partielle de pièces en matière plastique

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WO2003088144A2 (fr) * 2002-04-09 2003-10-23 Digimarc Id Systems, Llc Techniques de traitement d'images pour imprimer des cartes et des documents d'identification
DE102005032997A1 (de) 2005-07-14 2007-01-18 Giesecke & Devrient Gmbh Gitterbild und Verfahren zu seiner Herstellung
DE102006029797A1 (de) * 2005-07-28 2007-02-08 Mühlbauer Ag Personalisierungsverfahren zur Erzeugung eines Bildes auf einem Kunststoffsubstrat und personalisiertes Sicherheitsdokument
EP2100747B1 (fr) * 2008-03-10 2015-02-25 Maurer Electronics Gmbh Procédé destiné à l'application d'une image dotée d'une information supplémentaire incorporée sur un support de données
US8354611B2 (en) 2008-10-29 2013-01-15 Coherent, Inc. Laser engraving apparatus
EP2181858A1 (fr) * 2008-11-04 2010-05-05 Agfa-Gevaert N.V. Document de sécurité et son procédé de production
EP2322355B1 (fr) 2009-11-13 2015-02-11 Polska Wytwornia Papierow Wartosciowych S.A. Procédé de fabrication d'une image latente sur un substrat de document et substrat de document comportant une image latente
DE102010053604A1 (de) * 2010-12-06 2012-06-06 Bundesdruckerei Gmbh Modulare Laserindividualisierungsvorrichtung und Laserindividualisierungssystem

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EP3715142A1 (fr) 2020-09-30
WO2015193013A1 (fr) 2015-12-23
CN106457876B (zh) 2018-06-01
EP3715142B1 (fr) 2021-12-01
EP3875284A1 (fr) 2021-09-08
DE102014211513B4 (de) 2018-11-22
EP3875284B1 (fr) 2024-07-17
EP3154793A1 (fr) 2017-04-19
EP3154793B1 (fr) 2021-02-24
CN106457876A (zh) 2017-02-22
EP3875283A1 (fr) 2021-09-08
EP3715141A1 (fr) 2020-09-30
EP3875283B1 (fr) 2024-07-17
DE102014211513A1 (de) 2015-12-17

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