Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/40—Manufacture
  • B42D25/405—Marking
  • B42D25/41—Marking using electromagnetic radiation
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/337—Guilloche patterns

Definitions

• the present invention relates to a method for securing the personalized area of a secure document. It also relates to a secure device comprising such a personalized area.
• the invention has applications in the field of securing documents, to secure documents to justify the identity of its holder, such as identity cards, driving licenses, passports, etc..
• security documents such as identity documents
• identity documents generally include a personalized image of its holder, for example an identity photograph, as well as alphanumeric data such as, for example, the name of the holder. , his date of birth, his address, the document number, the date of issue of the document and / or the identity of the authority issuing the document.
• This secure document 10 comprises a card body 1 1 made of a PVC (polyvinyl chloride) or PC (polycarbonate) material or any other material adapted to receive alphanumeric image and data prints.
• Secure document 10 includes a custom area 12 constructed through several layers of materials stacked between a substrate and a protective layer.
• the personalized zone 12 includes personal data to the holder of the secured document, such as, for example, a personalized image 13, alphanumeric data 14 and / or so-called identification guilloches.
• guilloches 15 in color or gray scale, form a network of wavy lines superimposed on the image 13 and visible to the naked eye.
• the guilloches 15 are intended to make discernable, during an identity check, any Fraudulent modification of the image 13. They make it possible in particular to guard against changes in the color of the image, for example when adding a beard or hair.
• alphanumeric data protection means mentioned on the identity documents in order to guard against alterations of these data such as, for example, changes to these alphanumeric mentions.
• One of the means of protection consists in inserting so-called standard guilloches on all or part of the surface of the document and inserting the personalized image and the alphanumeric data relating to the holder on these guilloches.
• This protection means makes it possible to detect a falsification of the alphanumeric data because any modification of said data causes a deterioration of the guilloches.
• this means of protection does not make it possible to detect a counterfeit of the document made with a powerful material.
• variable guilloches encoding all or part of the alphanumeric data. Examples of document securing methods using such variable guilloches are described in particular in the patent applications EP 2 325 022 A1 and US 2010/0260372 filed in the name of the applicant.
• the applicant proposes to insert, above the guilloches and the personalized image of the holder, a laser marking in colors whose colors are directly dependent on the pigments used in the guilloches and the personalized image.
• the invention relates to a method for securing a personalized area of a secure document, comprising the following operations:
• This security method allows a controller to see with the naked eye whether the marking, inserted on the personalized area containing the personal data of the holder, is consistent with the expected marking for a valid document.
• color marking or "laser marking” is defined as a set of points resulting from laser impacts, forming lines of variable colors on the personalized area of the secure document.
• An insertion method is any method of inserting an alphanumeric character, a line, an image, or any other visual pattern or structure within the card body, by an ink printing technique (eg an offset ink) or a laser marking technique.
• the security method further comprises an insertion of additional security elements, the color marking at least partially crossing said security elements.
• the color marking comprises a plurality of color laser points, each generated by a specific reaction between the wavelength of one of the laser beams and at least one colored pigment of the guilloche pattern and / or the personalized image and / or security elements.
• the reaction may be of the chemical, thermal and / or photonic type.
• the color marking comprises laser spots of a black color obtained by carbonization of the materials of the personalized zone of the secured document.
• the laser beams emit one in the infrared, the other in a visible color or in the ultraviolet.
• the insertion of the color marking is carried out by means of four laser beams each emitting, respectively, at a wavelength in the infrared, in the red, in the blue or in the green.
• the color marking extends along at least one curved or rectilinear line in a direction substantially transverse to the guilloche patterns.
• the color marking overlaps the personalized image and a zone contiguous to said personalized image so as to form a continuous pattern, of variable color, connecting the personalized image to its environment.
• the color marking comprises secondary guilloche patterns extending in a direction substantially transverse to the guilloche patterns.
• the first insertion method is a laser-reactive material printing process.
• the second insertion method is an offset printing method.
• the guilloche pattern is a color change pattern comprising a mixture of several colored pigments.
• the invention relates to a secure document comprising a personalized area made by means of the security method as defined above.
• the personalized area comprises a personalized image in colors and guilloche patterns in colors overlapping at least partially, said personalized area being partially modified by the laser marking colors.
• FIG. 1, already described, represents a view from above of an example of a secure document in a known manner
• FIG. 2 represents a view from above of an example of a secure document according to the method of the invention
• FIG. 3 represents a sectional view of a portion of the secure document of FIG. 2;
• FIG. 4 represents an example of laser marking overlapping guilloche patterns
• FIG. 5 represents another example of colored markings according to the invention.
• FIG. 6 shows a sectional view of a card body in which the laser marking passes through a personalized image, guilloches and additional security elements.
• FIG. 2 represents a view from above of a secure document 100 in which the personalized area 120 is secured according to the method of the invention by a color marking.
• This secure document 100 for example an identity card, comprises a card body 1 10 and, within this card body, a personalized area 120.
• the personalized area 120 of the secure document 100 is formed through several layers of materials 122-126, stacked on top of one another between a substrate 121 and a protective layer 127. Each layer of material 122-126, just like the substrate 121, constitutes a surface the card body likely to receive an impression.
• the custom area 120 includes a custom image 122, for example a photograph of the holder, printed on a surface of the card body 1 10, for example the substrate 121 or the transparent layer 123, and personal data relating to said holder.
• This personal data can be alphanumeric data 140 written on the substrate 121 or in the transparent layer 123, next to the personalized image 122.
• the personalized zone 120 also comprises guilloche patterns, also called guilloches, inserted above and / or below the custom image 122 so that the custom image and the guilloche are superimposed at least in part.
• the guilloches may be standard guilloche 126 formed of Offset ink patterns made on the substrate 121 or on a transparent layer, such as the layer 125 of Figure 3, and covering all or part of the card body.
• the standard guilloches 126 may be positioned below the custom image 122.
• the standard guilloches 126 may also be inserted in a transparent layer above the custom image 122, as shown in FIG.
• the guilloches can also be identification guards 124 whose patterns encode personal data relating to the holder to allow an identification of the keeper.
• These identification guilloches 124 made for example by means of a laser and / or a specific ink, can be inserted on the substrate 121 or in a transparent layer 123, and extending over or under a part or the all of the personalized image 122 and / or in the vicinity of said image, as shown in FIG. 3.
• the personalized image 122 is generally a color photograph, printed or reproduced in the card body. This image therefore comprises a plurality of colors obtained by means of chemical or natural substances called pigments.
• the guilloche patterns are color patterns containing pigments.
• a guilloche pattern may contain a single pigment or several pigments, particularly when it comes to guilloche patterns with color change (called "rainbow" in English terms).
• the secure document comprises, according to the invention, a laser marking 1 60, in color, covering both at least in part, the personalized image 122 and the guilloche patterns 124, 126.
• This laser marking 1 60 can cover in in addition to other security elements 130 inserted in the custom area 120, as shown in Fig. 6.
• a protective layer 127 covers all the layers and prints 122-126 and 130 so that the custom area 120 is sandwiched. between the substrate 121 and said protective layer 127.
• the laser marking 1 60 is made in a transparent layer covering the personalized zone 120.
• the laser marking 1 60 is made in the thickness of the different layers and printing 121 -126, before the protective layer is deposited on the card body 1 10.
• the laser marking 1 60 is made in the thickness of the various layers and printing 121 -126, through the protective layer deposited on the card body 1 10.
• the method of the invention therefore proposes to carry out a laser marking 1 60 on all the layers and prints of the personalized zone 120.
• This laser marking 1 60 is made during an operation that takes place after the insertion operations. of the custom image 122 and the standard guilloche patterns 126 and identification 124 and the deposition operations of the transparent layers 123, 125.
• This laser marking operation is performed through the various layers and prints forming the custom area 120 of the card body 1 10.
• This laser marking 1 60 is produced by means of lasers emitting pulses directed towards the personalized zone, at predetermined wavelengths. Each pulse generates, on the personalized zone, an impact point crossing the different layers of said personalized zone.
• at least two laser beams having different wavelengths are used, each wavelength generating a different chemical reaction with the pigments of the personalized image and the pigments of the guilloche patterns.
• one laser may emit beams in the infrared, while the other emits beams in a visible color or in the ultraviolet.
• more than two different wavelengths are used, providing a greater variety of possible marking colors.
• four laser beams can be used for marking: a first laser beam emits at a wavelength of infrared (around 1064nm), a second laser beam emits at the wavelength of the red color ( around 650nm), a third laser beam emits at the wavelength of the blue color (around 450nm) and a fourth laser beam emits at the wavelength of the green color (around 532nm).
• these wavelengths are only examples and that other wavelengths of the visible or the invisible can be chosen as long as said wavelengths make it possible to generate colors obtained. by chemical reaction with the pigments of the personalized image and guilloche.
• a laser marking according to the invention comprises a plurality of laser points each corresponding to an impact of a laser beam on one or more layers of the card body 1.
• the laser points more or less thick depending on the dimensions of the laser beam and the chemical reaction with the pigments, can be arranged in the form of a straight line or a curved line.
• a laser marking 160 thus comprises one or more curved or rectilinear lines, continuous or discontinuous, referenced 1 60a, 1 60b, 1 60c, 1 60d and 1 60e in FIG. 4, of a single color or of several colors varying from a laser point to another, gradually or not, as explained in more detail later.
• the laser marking 1 60 extends from preferably in a direction transverse to the direction of the identification guilloches 124 and / or standard guilloches 126. Thus, each line of the laser marking 1 60 overlaps several guilloches, which allows to generate several laser points of different colors.
• the color of each laser dot of the marking varies as a function of the wavelength of the laser beam impacting the card body 1 10, the possible security elements 130 and the pigments of the guilloches 124 and 126 and the personalized image 122. at the location of the impact. Indeed, the chemical reaction that occurs between a color pigment and a laser wavelength generates a color other than that of the original pigment if the wavelength of the laser has been chosen appropriately.
• Different colors can therefore be generated by the reaction between the different pigments of the personalized image and the guilloches and a specific laser wavelength.
• the reactions associated with the other security elements 130 such as the Dovid or Kinégrame 130c, the UV ink 130b, the iridescent ink 130a and the embossed guilloches 130d, to mention only those represented in FIG. 6, are specific to the wavelengths of the lasers considered in this application.
• each laser dot of the marking may vary according to the wavelength of the laser beam impacting the card body, the energy of the laser pulses, their duration, but also the pigments of the laser. guilloche, personalized image, various security elements at the location of the impact.
• FIG. 4 shows an example of five laser marking lines 1 60a-160e traversing transversally five identification guards 126a-126e of different colors, respectively violet, red, blue, green and yellow, stretching on the same color of custom image 122.
• the marking line 160a is obtained with an infrared laser beam at a wavelength of about 1064 nm; the marking line 160b is obtained with a red laser beam at a wavelength of about 650 nm; the marking line 160c is obtained with a green laser beam at a wavelength of about 532 nm; the marking line 160d is obtained with a blue laser beam at a wavelength of about 450 nm; and the marking line 1 60e is obtained with this same laser beam at higher power (energy).
• the color of the points of impact 1 60a of the laser beam Infrared with image 122 and / or guilloches is black.
• the color of the points of impact of the red, green, blue, low-power and high-power laser beams blouo on the image 122 and on the guilloches 126 (which are of variable color in this example) changes according to the initial color in particular .
• an impact on the plastic material of the card body (polycarbonate, PVC or other) generates a black or gray point if no colored pigment or other security element 130 is encountered during the impact.
• FIG. 5 shows another example of laser marking in which the marking lines 1 60 are secondary guilloche patterns.
• the secondary guilloche patterns referenced 260a-260d are made by laser pulses on the layer of material used to generate the personalized image 122 and the guilloches 124, 126.
• These secondary guilloche patterns 260a-260d can encode data - for example holder data - or simply lines with sinusoidal curvatures.
• the guilloche pattern 260a may be, for example, a marking line at least partly yellow, obtained from a laser beam of green wavelength on a portion of the image having red tones.
• the secondary guilloche patterns 260b and 260d may be, for example, totally or partially light blue and red.
• the secondary guilloche patterns 260c may be, for example, wholly or partially black, with a thickness depending on the color density level of the area of the custom image.
• the cyan color will become white under the effect of a laser impact of red color, or black under the effect of an infrared color laser impact; it will remain cyan under the effect of a green or blue laser impact.
• the green color of the image will become black under the effect of a laser impact infrared, yellow under the effect of a red and cyan laser impact under the effect of a blue laser impact; it will remain green under the effect of a green laser impact.
• the color, and the thickness, of the laser markings varies according to the colored pigments present in the guilloches and the personalized image. These pigments vary according to the insertion color but also the printing technique. Indeed, each printing technique has specific pigments, in size and in color. An image and guilloches inserted with an inkjet printing technique have different pigments than those inserted with a dye sublimation printing technique (known as D2T2) or an offset printing technique or laser printing. Indeed, each printing technique has colors and pigments of its own. The chemical reaction caused by a laser beam on a pigment from a printing technique will therefore generate a color and / or thickness different from that generated by the same laser beam on a pigment from another printing technique.
• the color and / or the thickness obtained by the reaction of the laser impact on a pigment varying according to the pigment and the wavelength of the laser beam the person skilled in the art will understand that a plurality of colors can be generated, especially when the laser impact reacts with both the identification guilloche 4-24 pigment 124 and / or the standard guilloches 126 and / or the other security elements 130 and / or with the pigment of the personalized image 122.
• the plurality of laser impacts form a laser marking which can extend over all or part of the personalized area of the document.
• the marking lines follow a path that overlaps the custom image 122 and a contiguous area 128 to said image, thereby forming a continuous, variable color pattern that connects the customized image and its environment. that is, the contiguous zone.
• the variation of the colors of the laser marking makes it possible to determine, during a control, if the guilloches and the personalized image are indeed the elements of origin of the secured document. Indeed, as the colors differ according to the printing technique, it is possible to check if the guilloches and the personalized image have well been inserted with the initial insertion techniques. Counterfeiting or falsification with another insertion technique would be easily detected. For example, if the securing process plans to insert the custom image with laser printing and the guilloche with offset printing, then the colors generated by the laser impacts will be known. Any falsification or counterfeiting will cause a change in colors, so that the falsification or counterfeit can be detected with the naked eye. In addition, in embodiments where the marking lines overlap the custom image and the contiguous area, any cut in one or more of these lines means that there has been an attempt to falsify the custom area.
• the method of securing a personalized area of a document according to the invention comprises various variants, modifications and improvements which will appear in a manner obvious to the user. those skilled in the art, it being understood that these variants, modifications and improvements fall within the scope of the invention, as defined by the following claims.

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• 2017
  • 2017-10-31 EP EP17306495.7A patent/EP3476618A1/de not_active Withdrawn
• 2018
  • 2018-10-29 WO PCT/EP2018/079577 patent/WO2019086380A1/fr unknown
  • 2018-10-29 EP EP18795553.9A patent/EP3703955B1/de active Active

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