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
  • B42D25/21—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose for multiple purposes
• • 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
  • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
• • 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

Definitions

• Security device for a matrix adapted to be personalized by means of a laser to produce an image
• the present invention relates to a safety device.
• This security device is more particularly adapted to a matrix adapted to be personalized by means of a laser to produce a color image.
• a security device secures such a matrix and / or a color image obtained from such a matrix.
• a matrix that can be customized by means of a laser to produce a color image comprises a color layer comprising elements, each of a single basic color, superimposed with at least one occulting layer sensitive to the laser.
• a method of (re) producing a color image spatially corresponds point-to-point to said image to (re) produce to a matrix.
• Each point of the matrix comprises at least a portion of at least one element of each of the basic colors.
• Each corresponding point in the image defines a hue.
• the colorimetric decomposition of this hue on the n base colors of the color base of the matrix provides a component for each base color.
• An element of the matrix is obscured, by laser firing, according to said component.
• Such a color image produced by personalization is advantageously used for an identity document, for example to make a passport identity photo.
• a security device is a difficult means to reproduce in order to make the task of a forger more difficult, advantageously controllable so that it can be verified and advantageously linked to the component, here the matrix and / or the image, in order to make detectable a possible counterfeiting.
• the invention proposes a security device linked to the matrix and a personalization method making it possible to link such a security device to the image and, where appropriate, to the carrier.
• the subject of the invention is a security device comprising a matrix adapted to be personalized by means of a laser for producing a color image, comprising a color layer comprising elements, each of a single basic color, and at least one laser-sensitive blackout layer, wherein the shape of at least one element is changed.
• the modified element overlaps, at least partially, with at least one element of another color, the color of the modified element being applied in the zone of encroachment.
• the modified element encroaches on at most two elements.
• the modified element is the one whose color is least present on average in the color image.
• the modified element is the one whose color is most present on average in the color image.
• the extent of a modification is less than 12 pixels of the matrix, preferably less than 5 pixels.
• the modification draws at least one alphanumeric symbol.
• the modification draws an identifier of the transmitter, preferably a monogram.
• the modification is periodically repeated in the matrix.
• the modification saves an area of the matrix, preferably a central zone.
• the elements are lines preferably having a width of two pixels of the matrix.
• the invention further relates to a method of customizing a matrix according to any one of the preceding claims, wherein at least one pixel of the matrix is customized according to the hue of the corresponding pixel of the image and the effective color of the pixel of the matrix.
• At least one pixel of at least one modification is personalized according to the hue of the corresponding pixel of the image and the predictable color of the pixel.
• a modification is selectively personalized by considering the effective color of the pixels or the predictable color of the pixels so as to encode at least one datum.
• said at least one datum comprises an attribute of a carrier.
• FIG. 1 illustrates a matrix and its correspondence with an image
• FIG. 2 illustrates a first arrangement of the color elements of a matrix
• FIG. 3 illustrates another arrangement of the color elements of a matrix
• FIG. 4 illustrates a first characteristic of the invention
• FIG. 5 illustrates a use of the invention to form a symbol
• FIG. 6 illustrates a use of the invention to form a monogram
• FIG. 7 illustrates a periodic use of the invention
• FIG. 8 illustrates a saving on a part of the matrix
• FIGS 9 and 10 illustrate two embodiments of the personalization laser shot.
• a matrix 1 adapted to be personalized by means of a laser for producing a color image comprises a color layer 2, superimposed with a blackout layer 3 sensitive to the laser.
• the color layer 2 comprises a arrangement, typically periodic, of elements 4, 4c, 4m, 4y, 4w, each of a single basic color, organized in sets or points 7 of the matrix 1.
• Each point 7 comprises at least a part of an element 4 of each basic color.
• a point 7 comprises at least once each of the n colors.
• the n colors form a color base.
• n is at least 3.
• a point 7 of the matrix 1 comprises four square elements, each of one of the four colors: a cyan element 4c, a magenta element 4m, a yellow element 4y and a white element (in white English) 4w.
• a point 7 of the matrix 1 comprises four elements, always one of four colors: cyan 4c, magenta 4m, yellow 4y and white 4w, arranged in line.
• Such an arrangement is advantageous in that it simplifies the production of the color layer 2, typically by offset printing.
• An occulting layer 3 is an initially transparent layer becoming dark as it receives a laser shot. At least one such occulting layer is disposed above and / or below the color layer 2, to allow the realization of a direct and / or reflected concealment.
• An image 5 to be reproduced is spatially divided into dots or pixels 6 according to the same arrangement (same number of rows and columns) as the points 7 of the matrix 1.
• a dot or pixel 6 of the image 5 is associated with a point 7 of the matrix 1.
• a pixel 6 of the image 5 is a point 6 of the image 5.
• a pixel 8 of the matrix 1 is substantially smaller.
• a pixel 8 of the image layer 2 is advantageously of the smallest achievable size, and is about 30 ⁇ .
• Figure 3 illustrates linear elements of two pixels 8 of width. This pixel size 8 is still compatible with the resolution of the laser firing process which is also of the order of 30 ⁇ .
• a method of (re) producing a color image spatially spatially associates said image 5 with (re) producing at a matrix 1, so that each point 7 of the matrix 1 is spatially associated with a point / pixel 6 of the image 5.
• a dot 6 of the image 5 defines a hue.
• a colorimetric decomposition of this hue on the n base colors of the colorimetric base of matrix 1 provides a component for each base color.
• a pixel 8 of the matrix 1, of this basic color can then be obscured, by laser firing, according to said component.
• the occultation is inversely proportional to said component, in order to express the residual base color according to this component.
• a pixel 8 of the matrix 1 is obscured at 70%.
• the matrix 1 has an arrangement, preferably periodic, for example here according to elements 4c, 4m, 4y, 4w continuous linear of each of the n base colors, for example here arranged horizontally relative to the picture 5
• the shape of at least one element 4c, 4m, 4y, 4w is modified. This is illustrated in FIG. 4.
• a modification 9a modifies the element 4m, normally magenta, with a pixel of the basic color of element 4c, ie cyan.
• modifications 9b, 9c modify the element 4w, normally white, with cyan pixels.
• a modification 9d modifies the element 4y, normally yellow, with a cyan pixel.
• a 9th modification affects the element 4c, normally cyan, with a white pixel.
• an element 4c, 4m, 4y, 4w is superimposed, at least partially, and encroaches on an element of another color and imposes its color in the superposition / encroachment zone. It follows that at least one pixel 8 of the matrix 1 is not of the predictable basic color.
• This first characteristic produces a variation forming a detectable pattern, preferably with the naked eye, or otherwise by means of a magnifying glass.
• This detectable pattern acts as a characteristic signature of the producer or emitter of the matrix 1 and thus makes it possible to guarantee the origin of the origin of said matrix 1.
• this characteristic produces a security device that links matrix 1 to its producer / transmitter.
• This characteristic buried in the color layer 2, is relatively difficult to modify a posteriori, once the integrated color layer 3, with the occulting layer 3 and other possible layers in a matrix 1, typically by lamination.
• a modification 9 advantageously relates to a single color, here cyan, which encroaches on the other colors as illustrated by the modifications 9a-d or alternatively which disappears and is replaced by white as illustrated by the amendment 9e.
• a modification 9 relates to an element 4 in that it overlaps and is superimposed with at least one other element 4, ie an element of another color.
• a modification 9e can only concern an absence of a color, however such a modification 9e is then little visible. Also a modification 9 advantageously encroaches on at least one element 4.
• the modified element 4 is superimposed with at most two other elements. These encroached elements are advantageously neighbors and contiguous with the modified element 4.
• the modified element 4 is chosen so as to be the most visible.
• the modified element 4 is chosen such that its color is the least present on average in the image 5.
• the cyan is advantageous, in that it is generally absent or very little present, and this for all types of skin color and / or hair. It follows, according to the embodiment of the customization, as described above, a modification 9 of this color, substantially absent from the image 5, is then lasérisée black.
• the modified element 4 is chosen so as to be the least visible.
• the modified element 4 is chosen such that its color is the most present on average in the image 5.
• the magenta is advantageous, in that it is generally very present, mainly in the skin and this for all types of skin color. It follows, according to the embodiment of the customization, as described above, that a modification 9 of this color is not lasérisée.
• the extent of the modification 9 is advantageously less than 12 pixels of the matrix 1, preferably less than 5 pixels.
• a modification 9 is such that it draws a symbol.
• such a symbol may advantageously be an alphanumeric symbol.
• a height of 4 pixels 8 of the matrix 1 makes it possible to draw certain alphanumeric characters.
• a height of 5 pixels 8 of the matrix 1 makes it possible to draw substantially all the alphanumeric characters.
• the modification 9 draws an identifier of the transmitter, preferably a monogram.
• a monogram comprising a sequence of 3 letters can be used to indicate the country issuing a travel document or identity.
• a sequence of 3 letters can typically be drawn over an area less than or equal to 12 pixels 8.
• the modification 9 is periodically repeated on the surface of the matrix 1.
• a repetition on the entire surface of the matrix 1 may be it is preferable for a good "reading" of the image 5.
• no modification 9 is arranged in at least one spared zone 10.
• Said spared zone 10 may be for example a central zone .
• the spared zone 10 is advantageously an oval covering more or less the face, to leave intact the details (eyes, nose, mouth, etc.) useful for a facial identification.
• the invention further relates to a method of personalizing such a matrix 1.
• a pixel 8 of the matrix 1 is customized according to the hue of the corresponding pixel 6 of the image 5.
• a pixel 8 of the matrix 1 is thus laserized according to the component of said hue and the base color of the pixel 8.
• the base color of a pixel 8 is the predictable base color of this pixel 8, the color it is said to have depending on its position.
• a pixel 8 is deemed to have the color of the element 4c, 4m, 4y, 4w in which it is located.
• the first characteristic of the invention is advantageously to modify this.
• the pixel of modification 9a has, after modification, an effective cyan color, while its predictable color is magenta, since it is located in an area belonging to a 4m magenta element.
• a personalization method according to the invention obscures a pixel 8 as a function of its effective color.
• the actual color of a modification 9 is different from the predictable color.
• This mode of personalization is advantageous in that the customization requires a knowledge of the exact mapping of the matrix 1 including the modifications 9 applied. This knowledge can be obtained by reusing the cartography used during the realization of the matrix 1. This mapping is not normally accessible to a counterfeiter. This mapping can still be obtained by re-reading the effective color of the color layer 2 of the matrix 1. Such a replay requires a pointed technology that is not necessarily accessible to a counterfeiter.
• FIGS. 9 and 10 illustrate comparatively the two personalization methods applied respectively to the same pattern, here the matrix detail 1 of FIG. 7.
• Said pattern occupies two pixels 6 of the image 5. It is assumed that the hue of these two pixels 6 is identical and decomposes with the following components: cyan 0%, magenta 50% and yellow 100%. Thus a pixel 8 of the matrix 1 of yellow color is not obscured, a magenta 8 pixel is obscured at 50% which is represented by a gray 50% and a pixel 8 cyan is completely obscured what is represented by black .
• FIG. 9 illustrates the result by considering the predictable colors of the pixels 8 of the matrix 1. While FIG. 10 illustrates the result by considering the effective colors of the pixels 8. It appears that a customization according to the predictable color tends to mask the modifications 9, whereas a customization according to the actual color has, on the contrary, tend to underline the modifications 9. This makes it possible to make visible the personalization process used and to detect a counterfeit.
• a personalization according to the invention in that it takes into account the actual color of a modification 9 and the hue of the image 5 for the corresponding point 6, advantageously makes it possible to create a link between the matrix 1 and the image 5 reproduced by the customization.
• a modification 9 of an element 4 makes it possible to bind a matrix 1 to its issuing authority and thus guarantee its origin.
• the personalization process further allows matrix 1 to be linked to image 5.
• a personalization method combining the two previous customization modes is advantageous in that it allows, considering the predictable color, to hide the modifications 9 in certain areas of the image, and on the contrary, considering the actual color, d highlight the changes 9 in other areas of the image.
• Such a datum may be a code thus advantageously concealed in the reproduced image in order to constitute a hidden signature.
• the absence of such a signature can detect a counterfeit.
• a matrix 1 comprises a plurality of modifications 9.
• a scheduling of these modifications 9 makes it possible to define a sequence of succession / reading.
• the customization mode allows for binary coding.
• a modification 9 customized according to the effective color codes a 1, respectively a 0, while a modification 9 customized according to the predictable color defines a 0, respectively a 1.
• a matrix 1 comprises N, for example 31, modifications 9.
• One of these modifications 9 is customized according to the color effective, respectively predictable, and designates the coded number, while the other modifications 9 are customized according to the predictable color, respectively effective.
• Such coded data may also advantageously comprise an attribute of a carrier of the document containing the security device.
• An example of attribute is the date of birth of the wearer, which can be encoded by any of the previously described methods. This advantageously makes it possible to bond the matrix 1 with the wearer, thus further reinforcing the safety of the device.

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

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• 2015
  • 2015-10-23 FR FR1560172A patent/FR3042735B1/fr not_active Expired - Fee Related
• 2016
  • 2016-10-21 EP EP16798245.3A patent/EP3365183B1/de active Active
  • 2016-10-21 WO PCT/FR2016/052747 patent/WO2017068304A1/fr not_active Ceased

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