EP2974877B1 - Procede de fabrication d'un document de valeur ayant un effet de transmission/réflexion visuelle - Google Patents

Procede de fabrication d'un document de valeur ayant un effet de transmission/réflexion visuelle Download PDF

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Publication number
EP2974877B1
EP2974877B1 EP15002086.5A EP15002086A EP2974877B1 EP 2974877 B1 EP2974877 B1 EP 2974877B1 EP 15002086 A EP15002086 A EP 15002086A EP 2974877 B1 EP2974877 B1 EP 2974877B1
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EP
European Patent Office
Prior art keywords
information
item
substrate
printing
register
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
EP15002086.5A
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German (de)
English (en)
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EP2974877A1 (fr
Inventor
Peter Schiffmann
Christine Traub-Mayer
Jana Kisselova
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.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
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Publication of EP2974877A1 publication Critical patent/EP2974877A1/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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • 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
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/29—Securities; Bank notes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/351—Translucent or partly translucent parts, e.g. windows

Definitions

  • the invention relates to a method for producing a document of value which has a translucent substrate with a front and a back, first information being arranged on the front and second information being arranged on the back, the second information being arranged in register with the first information .
  • the surface tension of paints, varnishes and coatings can be influenced by additives.
  • the hydrophobization of existing paints and varnishes is used in practice to improve wetting on substrates or preprints.
  • silicone oils or waxes are suitable for hydrophobing.
  • dirt repellency by making paints hydrophobic.
  • UV-drying lacquers UV-crosslinking silicone resins are sometimes used for this purpose.
  • Iriodin pigments are interference pigments from Merck, which mainly consist of mica-based pearlescent pigments.
  • effect colors Printing inks that contain effect pigments are also referred to as effect colors. These effect pigments are usually printed on the substrate using a separate printing machine, usually using gravure, flexographic or screen printing, in order to achieve an optimal optical effect. This is due, for example, to the particular size of the effect pigments, the shape (for example platelet-shaped) and the need for a plane-parallel orientation of the pigments in relation to the surface of the substrate. Printing with a separate printing machine, however, has the disadvantage that a new installation of the substrate and possible further mechanical transfers inevitably lead to register fluctuations between the imprints produced with different printing processes.
  • the register fluctuations can amount to a few millimeters, depending on the quality of the printing machine and the substrate (flatness, dimensional stability), the substrate size, the active drying of the ink (UV dryer, hot air / IR dryer), etc. and are therefore also noticeable to laypeople.
  • effect colors are printed on both the front and the back of a substrate, the effect colors are usually applied in different printing steps, which leads to a further increase in register fluctuations. This registration problem also arises when film elements and printed images are applied to the substrate using different methods and different machines.
  • a data carrier with a security element which has a print image and a laser marking which at least partially overlaps the print image.
  • the security element furthermore has a laser modification area which at least partially overlaps the print image, is in register with the laser marking and in whose area of overlap with the print image the visual appearance of the print image is modified by the action of a laser beam.
  • a security element for a value document with a transparent substrate is known, on the first surface of which at least one first security feature and on the second opposite one Surface is arranged at least a second security feature.
  • the first security feature has opaque basic pattern elements that are spaced apart from one another and are arranged in the form of a grid.
  • first information elements are arranged which contrast in color with the basic pattern elements.
  • the second security feature has second information elements which are arranged so as to overlap the basic pattern elements and protrude over at least one side of the respective basic pattern element, the second information elements also contrasting in color with the basic pattern elements.
  • the basic pattern elements, the first information elements and the second information elements can be removed, for example, by a laser, the removed areas resulting in a letter for a viewer, for example.
  • the invention is therefore based on the object of developing a method of the generic type for producing a document of value in such a way that the disadvantages of the prior art are eliminated and the protection against forgery is further increased.
  • a translucent substrate is first made available, which has a front side and a rear side. First information is then applied to the front side of the substrate and second information is applied to the rear side of the substrate, the second information being arranged in register with the first information. At least one third item of information is then applied to the front side and / or rear side of the substrate, the at least one third information is arranged at least partially over the first information and / or second information. In the last method step according to the invention, a register is produced between the at least one third piece of information and the first piece of information and / or second piece of information.
  • At least one third piece of information is thus arranged on the front and / or back of the substrate, which is arranged at least partially overlapping the first piece of information and / or second piece of information, the at least one third piece of information in the register the first information and / or second information is arranged.
  • One of the basic ideas of the invention is that coatings that cannot be applied in register are brought together in register.
  • register the positional accuracy of printed images or other elements with respect to one another on the front and / or back of a substrate.
  • register For example, in the case of parts of printed images which, when viewed through, complement one another to form an overall printed image, even slight deviations of less than 0.1 mm between the respective printed images significantly disturb the visual impression when viewed through.
  • DIN 16500-2: 1987-01 defines register as the accuracy in printing technology with which the intended reproduction quality of the details to be reproduced is achieved or maintained.
  • See-through is present when the substrate is illuminated from one side and viewed from the other side.
  • Supervision exists if the illumination and viewing are from the same side of the substrate.
  • Translucency in the context of this invention means that an object, such as the substrate, allows incident light to pass through only to a certain extent. If light hits one side of the object, a certain proportion of the light is let through to the other side of the object and exits there again. The greater the percentage of the light passing through in relation to the incident light, the more translucent the object.
  • a translucent object is neither transparent nor opaque.
  • An object is referred to as transparent if the percentage of the light passing through the object in relation to the light hitting the object is at least 90%, i.e. the object allows the light to pass through almost without being weakened like a window or an opening .
  • an object that allows less than 10% and preferably about 0% of the incident light to pass through, i.e. in which the proportion of the light passing through is low, close to or equal to zero in relation to the incident light is referred to as opaque or non-translucent.
  • the substrate can be designed as a single-ply or multi-ply security paper.
  • Multi-ply security paper contains at least one ply of paper.
  • the further layers can also be made of paper, but also of other materials, for example plastic films.
  • the security paper is particularly preferably made of cotton fibers, such as is used for bank notes, for example.
  • the substrate can preferably also consist of paper made from other natural fibers, also preferably from synthetic fibers or a mixture of natural and synthetic fibers. Furthermore, the substrate preferably consists of a combination of at least two superposed and interconnected different substrates, a so-called hybrid, for example a combination of plastic film-paper-plastic film, ie a substrate made of paper is covered on each of its two sides by a plastic film, or paper -Plastic film paper, ie a substrate made of a plastic film is covered on each of its two sides by a substrate made of paper.
  • a so-called hybrid for example a combination of plastic film-paper-plastic film, ie a substrate made of paper is covered on each of its two sides by a plastic film, or paper -Plastic film paper, ie a substrate made of a plastic film is covered on each of its two sides by a substrate made of paper.
  • the font DE 102 43 653 A9 states in particular that the paper layer usually has a weight of 50 g / m 2 to 100 g / m 2 , preferably 80 g / m 2 to 95 g / m 2 .
  • any suitable weight can be used depending on the application.
  • Documents of value in which such a substrate or security paper can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other forgery-prone papers, such as passports and other identification documents, as well as cards, such as credit cards. or debit cards, the card body of which has at least one layer of security paper, and also product security elements such as labels, seals, packaging and the like.
  • the simplified designation of value document includes all of the above materials, documents and product security means.
  • front side or back side of the substrate or value document are relative terms which can also be referred to as “one” and “the opposite” side and which form the predominant part of the total surface of the substrate or value document. These terms expressly do not include the side surfaces of a substrate or document of value which, with a thickness of a substrate or document of value that is only about one millimeter for card bodies or only fractions of a millimeter for banknotes, are negligible and are usually not provided with security elements or coatings will or can become. In particular, no see-through effects can be achieved with the side surfaces.
  • Information within the meaning of this invention is a visually perceptible coating designed in the form of a pattern.
  • This can, for example, form a graphic image, an image, a number, a letter, a text or other characters.
  • the information particularly preferably consists of positive and / or negative motifs.
  • a motif element itself is applied to the substrate, whereas in the case of a negative motif, the area surrounding the motif element is applied to the substrate.
  • a positive motif is, for example, a letter printed in dark color on the light-colored substrate.
  • a negative motif is, for example, an area applied to the substrate in a dark color, which has an unprinted area in the form of a letter within the area.
  • a document of value results particularly advantageously, which in plan view has a first motif on the front, which is formed from the first and third information, and on the back, a second motif, which is formed from the second and optionally third information as well as showing a third motif in transparency, the third motif resulting from the superimposition of the first and second motif.
  • the coating consists of a printing ink which is printed onto the substrate by means of a printing method known from the prior art.
  • the third information is at least partially repelled by the first information and / or second information and is at least partially deposited outside of the first information and / or second information.
  • the third information is at least partially repelled from the area outside the first information and / or second information and is at least partially deposited within the first information and / or second information.
  • Such repulsion and attachment processes are, for example, from the publications WO 03/029019 A1 , WO 2009/083146 A2 and WO 2010/057995 A1 known.
  • the first information or second information is at least partially removed by a laser beam in the areas in which it is covered by the third information.
  • the area of the first information item or the second information item removed by the laser beam also removes the third information item arranged above it.
  • the first or second information item can be laser ablated and the third item of information is transparent to the laser beam and cannot be laser ablated.
  • the laser beam thus passes through the third information item and removes the first or second information item located below it.
  • the particles of the first or second information item ablated and accelerated by the laser beam break open the particles of the third item of information arranged above and drag them with them, while the particles of the third item of information located next to it are not ablated and remain on the substrate.
  • An imprint on the substrate containing the first information and the second information is carried out according to the invention using super-simultaneous printing, in which the front and back are printed simultaneously.
  • the front and back of the substrate are simultaneously printed in one printing process, whereby a register is achieved between the applied print images.
  • the registration is revealed to a viewer in see-through.
  • the registration can be recognized as two or more complementary, complementary and / or overlapping pieces of information from front to back.
  • the information on the front and the back preferably complement each other to form further information.
  • At least one of the items of information on the value document can be detected by means of a sensor of a processing machine.
  • This sensor is particularly preferably used to check the registration of the front and back information.
  • the information can contain additional features, such as luminescent (fluorescence, phosphorescence, upconversion or antistokes), both for the visual and for the machine checking of the document of value. Contain IR or UV absorbing or emitting, magnetic, thermochromic and / or photochromic additives.
  • luminescent fluorescence, phosphorescence, upconversion or antistokes
  • Case A requires in particular an application process based on a cleavage process.
  • the color is transferred to the substrate either directly from a flat or cylindrical printing form or indirectly, for example by means of a transfer roller from the printing form.
  • a partial layer is transferred to the substrate and a second partial layer remains on the transfer roller or the printing form.
  • no color splitting takes place and the color remains completely or partially on the transfer roller or the printing form.
  • the adhesion on the partial area of the ink-repellent coating must be less than the cohesive forces of the ink or the coating agent.
  • Printing processes in which the color transfer is based on splitting processes are offset printing, letterpress printing, indirect letterpress printing, and waterless Offset printing (also called Toray process), flexographic printing and gravure printing.
  • the surface tension of the ink-repellent coating is below 20 mN / m.
  • the paint itself is usually highly viscous and medium-adhesive. The process works at high printing speeds and a layer thickness range (based on the color transferred to the substrate) of up to 2 ⁇ m. If the layer is thicker, it can lead to toning.
  • Case B applies to all application methods that are not based on a cleavage process. These include ink-jet printing and screen printing. In both cases, the color is always completely transferred to the substrate, regardless of the substrate quality.
  • the surface tension of the substrate Depending on the surface tension of the substrate, the surface tension of the transferred color or the coating agent, the rheology, the physical drying, the absorbency of the substrate, the smoothness of the substrates (the smoother the better) and the drying time, there is a more or less obvious visible dewetting of the transferred ink or of the coating agent from the substrate in the area of the ink-repellent coating.
  • the color contracts to form a large number of drops and / or forms network-like structures. For example, when the screen printing ink dries, there are few imperfections within a few seconds after application, for example approx. 13% non-wetted or drained imperfections. A drying of the screen printing ink after 4 minutes after application leads to the formation of network-like structures of the screen printing ink with few defects. A drying of the screen printing ink after 10 minutes after application leads to Formation of drop-like structures with approx. 75% drained voids.
  • Case B can also occur in printing processes which are based on a split process and in which low-viscosity inks are used. This is the case, for example, with screen printing, flexographic printing and gravure printing. In these cases, a combination of case A and B can also occur.
  • ink-repellent coating in small structures, for example dots or lines arranged in a grid, since the dewetting works in a controlled, motif-related manner.
  • the difference between the surface tension of the ink-repellent hydrophobic and the hydrophilic ink is particularly preferably as great as possible.
  • An existing, oxidatively drying offset ink can be made hydrophobic, for example, with an additive of a 1% to 3% emulsion of a high molecular weight polydimethylsiloxane or a solution of an amino-functional polysiloxane.
  • Tego Glide 482 and Phobe 1500N from Evonik are examples of commercially available water repellant additives that are suitable for admixture in an offset ink.
  • an ink consisting of a UV-crosslinking silicone or a UV-crosslinking silicone and / or a UV-crosslinking fluoropolymer can be used.
  • a UV-crosslinking fluoropolymer allows a further significant reduction in surface tension.
  • a combination of the ink-repellent layer with a digit printing ink and / or phosphor block optimized thereon is also possible. Both prints are usually carried out as the final printing step, so that a perfect registration results. When printing numbers, for example, a line background print is suitable so that the number is not segmented too much and thus the legibility is not restricted too much.
  • the ink-repellent layer contains substances which, after activation, for example by means of hot air, migrate through the printing ink to the surface and / or evaporate and thus impair the wetting or ink acceptance of a second layer.
  • a leaking liquid is preferably a hydrophobic liquid such as a mineral oil.
  • the boiling range of this mineral oil is preferably between 180 ° C and 350 ° C.
  • Fig. 1 shows in Fig. 1a a side view of a value document 1, for example a bank note, with a substrate 2 with a front side 3 and a back side 4.
  • a first information item 5 is applied to the front side 3
  • a second item of information 6 is applied to the rear side 4.
  • the two pieces of information 5 and 6 each consist of a printed offset ink which is not or only slightly recognizable visually and which makes the substrate 2 highly hydrophobic at this point.
  • the offset colors of the two items of information 5 and 6 are each applied to the substrate 2 in the geometric shape of two rectangles 5.1 and 5.2 or 6.1 and 6.2, as shown in plan view in FIG Figure 1b from the front and in Figure 1c are shown from the rear with white dashed lines.
  • the third information item 7 is applied to the front side 3 and, in a third method step, the third information item 8 is applied to the rear side 4.
  • the two third pieces of information 7 and 8 are each applied to the substrate 2 in the geometric shape of a rectangle and each at least partially cover the two pieces of information 5 and 6, as in plan view in FIG Figure 1b from the front and in Figure 1c shown from the back.
  • the two third information 7 and 8 each consist of an opaque effect color, which is repelled by the hydrophobic surface of the information 5 and 6, so that the parts of the opaque effect color, the In the first step of the process, the information 5 and 6 were also printed on by these and are deposited outside the first 5 and second information 6.
  • the originally rectangular pattern of the two third pieces of information 7 and 8 thus changes to that in FIG Figure 1b or. Figure 1c illustrated pattern.
  • the effect colors in areas 5 and 6 are repelled in such a way that there is only one area with an irregular number of droplet formation in this area.
  • the second information 6 is applied in register with the first information 5, the two rectangles 5.1 and 6.1 being arranged in such a way that, when viewed through, they complement each other to form a continuous rectangle and overlap at the adjacent ends.
  • the two rectangles 5.2 and 6.2 are arranged in such a way that, when viewed through, they complement one another to form an interrupted rectangle, their inner ends having a certain overlap with one another.
  • the third information 7 and 8 printed in the second and third process step are not in register with one another and also not with register with the first and second information 5 and 6, so their position with one another and with the first and second information 5 and 6 can differ from banknote to banknote .
  • the areas in which they are repelled by the rectangles 5.1, 5.2, 6.1 and 6.2 are, however, arranged quasi "automatically" in the register, since the rectangles 5.1, 5.2, 6.1 and 6.2 are arranged in relation to one another in the register.
  • the image shown consists of a dark or black rectangle, which is created by the superimposition of the two opaque effect colors on the front and back which are overall opaque and through which light can hardly or not pass through.
  • the dark rectangle is interrupted in the upper area by a gray, a light and a gray rectangular area, which are formed by the superposition of the two rectangles 5.1 and 6.1, and in the lower area by two adjacent gray rectangular areas, which are defined by the rectangles 5.2 and 6.2 are formed.
  • the light area results from the overlap of the two rectangles 5.1 and 6.1, since there is no coating by the information 7 and 8 on either the front or the rear. In this area, the surface of the substrate can be seen on the front and back and the value document 1 thus has the same or almost the same translucency as the substrate 2.
  • the coating by the information 7 or the information 8 is only located on the front or back.
  • the opaque effect colors can be seen here in transmitted light, so that a certain proportion of the light penetrates through the value document 1 can.
  • FIG. 2 The embodiment shown corresponds to that in Fig. 1 embodiment shown, wherein the first information 9 is not printed on the front side 3 of the substrate 2 as a hydrophobic coating, but as an ink that can be removed by means of a laser.
  • the first information 9 is in this case printed in register with the second information 6 and in the form of two rectangles on the substrate 2, the form and position of which correspond to the rectangles 5.1 and 5.2 Fig. 1 correspond.
  • the third information 7 is then in the form of a rectangle, which is made up of the rectangle Fig. 1 is printed over the first information 9 as shown in FIG Figure 2b shown.
  • the effect color of the third information 7 is transparent for the wavelength of the laser radiation to which the first information 9 is sensitive.
  • the first information is removed.
  • the laser beam passes through the third information 7 without initially influencing it, then hits the first information 9 and removes it.
  • the removed material of the first information 9 tears away the parts of the third information 7 lying above it, so that the third information 7 corresponds to the in Figure 2c shown geometric shape assumes.
  • FIG. 3 The embodiment shown corresponds only to the structure on the rear side 4 of the substrate 2 from the structure Fig. 1 .
  • a first piece of information 10 is printed on the front side in register with the second piece of information, which consists of a visually recognizable offset color.
  • the information 10 already has the geometric shape shown in FIG Figure 3b is shown and that of those from Figure 1b corresponds to.

Claims (3)

  1. Procédé de production d'un document de valeur (1), ledit procédé comprenant les étapes suivantes :
    (1.1) fournir un substrat translucide (2) qui comporte une face avant (3) et une face arrière (4),
    (1.2) appliquer une première information (5) sur la face avant (3) du substrat (2),
    (1.3) appliquer une deuxième information (6) sur la face arrière (4) du substrat (2) en impression super-simultanée et en concordance avec la première information (5),
    (1.4) appliquer au moins une troisième information (7, 8) sur la face avant (3) et/ ou la face arrière (4) du substrat (2), l'au moins une troisième information (7, 8) étant disposée au moins partiellement au-dessus de la première information (5) et/ ou de la deuxième information (6),
    (1.5) établir une concordance entre l'au moins une troisième information (7, 8) et la première information (5) et/ou la deuxième information (6),
    caractérisé en ce que la première et/ou la deuxième information comprend une couleur hydrophobe et la troisième information comprend une couleur hydrophile et pour l'étape de procédé [1.5] la troisième information (7, 8) est au moins partiellement refoulée par la première information (5) et/ou la deuxième information (6) et s'accumule au moins partiellement à l'extérieur de la première information (5) et/ou de la deuxième information (6).
  2. Procédé de production d'un document de valeur (1), le procédé comprenant les étapes suivantes :
    (1.1) fournir un substrat translucide (2) qui comporte une face avant (3) et une face arrière (4),
    (1.2) appliquer une première information (5) sur la face avant (3) du substrat (2),
    (1.3) appliquer une deuxième information (6) sur la face arrière (4) du substrat (2) en impression super-simultanée et en concordance avec la première information (5),
    (1.4) appliquer au moins une troisième information (7, 8) sur la face avant (3) et/ ou la face arrière (4) du substrat (2), l'au moins une troisième information (7, 8) étant disposé au moins partiellement au-dessus de la première information (5) et/ ou de la deuxième information (6),
    (1.5) établir une concordance entre l'au moins une troisième information (7, 8) et la première information (5) et/ ou la deuxième information (6),
    caractérisé en ce que la région située à l'extérieur de la première et/ou de la deuxième information comprend une couleur hydrophobe et la troisième information comprend une couleur hydrophile et pour l'étape de procédé [1.5] la troisième information (7, 8) de la région située à l'extérieur de la première information (5) et/ ou la deuxième information (6) est au moins partiellement refoulée et s'accumule au moins partiellement dans la première information (5) et/ ou la deuxième information (6).
  3. Procédé de production d'un document de valeur (1), le procédé comprenant les étapes suivantes :
    (1.1) fournir un substrat translucide (2) qui comporte une face avant (3) et une face arrière (4),
    (1.2) appliquer une première information (5) sur la face avant (3) du substrat (2),
    (1.3) appliquer une deuxième information (6) sur la face arrière (4) du substrat (2) en impression super-simultanée et en concordance avec la première information (5),
    (1.4) appliquer au moins une troisième information (7, 8) sur la face avant (3) et/ ou la face arrière (4) du substrat (2), l'au moins une troisième information (7, 8) étant disposée au moins partiellement au-dessus de la première information (5) et/ ou de la deuxième information (6),
    (1.5) établir une concordance entre l'au moins une troisième information (7, 8) et la première information (5) et/ou la deuxième information (6),
    dans lequel pour l'étape de procédé [1.5] la première information (5) ou la deuxième information (6) est au moins partiellement supprimée par un faisceau laser dans les régions dans lesquelles elle est recouverte par la troisième information (7, 8) et la région, supprimée par le faisceau laser, de la première information (5) ou de la deuxième information (6) supprime également la troisième information (7, 8) disposée au-dessus d'elle, la première ou la deuxième information pouvant être supprimée par laser et la troisième information étant transparente au faisceau laser et ne pouvant pas être supprimée par laser.
EP15002086.5A 2014-07-16 2015-07-14 Procede de fabrication d'un document de valeur ayant un effet de transmission/réflexion visuelle Active EP2974877B1 (fr)

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DE102014010574.1A DE102014010574A1 (de) 2014-07-16 2014-07-16 Wertdokument mit Auf-/Durchsichtseffekt

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EP2974877B1 true EP2974877B1 (fr) 2021-07-07

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