EP1703885B1 - Element de securite pour papiers de securite et documents de valeur - Google Patents

Element de securite pour papiers de securite et documents de valeur Download PDF

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Publication number
EP1703885B1
EP1703885B1 EP04803864.0A EP04803864A EP1703885B1 EP 1703885 B1 EP1703885 B1 EP 1703885B1 EP 04803864 A EP04803864 A EP 04803864A EP 1703885 B1 EP1703885 B1 EP 1703885B1
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EP
European Patent Office
Prior art keywords
printed
grid
color
security element
security
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.)
Expired - Lifetime
Application number
EP04803864.0A
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German (de)
English (en)
Other versions
EP1703885A2 (fr
Inventor
Michael Bauer
Johann Müller
Peter Schiffmann
Monika Brigitte Schmid
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+Devrient GmbH
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Giesecke+Devrient GmbH
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Publication of EP1703885A2 publication Critical patent/EP1703885A2/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
    • B42D25/23—Identity cards
    • 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
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/14—Security printing
    • B41M3/144—Security printing using fluorescent, luminescent or iridescent effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/369—Magnetised or magnetisable 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D2035/06—
    • B42D2035/50—
    • 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
    • B42D25/378—Special inks
    • B42D25/382—Special inks absorbing or reflecting infrared light
    • 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
    • B42D25/378—Special inks
    • B42D25/387—Special inks absorbing or reflecting ultraviolet light

Definitions

  • the invention relates to a security element for security papers and documents of value, such as banknotes, passports, cards, identity documents or the like, having at least one color-coded latent image, the color-coded latent image having different image components.
  • the invention further relates to a security paper and a value document with such a security element.
  • security paper By security paper is meant hereinafter paper which is e.g. already equipped with security features, such as watermarks, security thread, hologram patch, etc., but is still fit to run and is an intermediate in the production of the value document.
  • value document is meant the product that can be run, that is, e.g. the printed banknote.
  • Security documents such as banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers that are prone to counterfeiting, such as passports, cards or other identity documents, are equipped with various security features to increase their security against counterfeiting.
  • watermark used as a security feature. Watermarks have the special feature that they only become visible in transmitted light, while they are visually difficult to perceive in incident light.
  • a series of passports can e.g. B. be equipped with a single, ie everywhere identical image motif, but at the same time be individualized.
  • the term "individualization" of the passports means the equipment of each passport with an individual picture, z. B. a portrait of the owner.
  • Printing on security paper is basically based on both additive color mixing and subtractive color mixing based printing processes or prints. Offset, gravure, or thermal transfer produces color halftone prints in which color shades are reproduced using dot patterns.
  • the color impression results from a subtractive and additive color mixture of three primary colors, namely cyan, magenta and yellow.
  • the pigments of the printing inks absorb from the incident white light the respective complementary component of their own color. The unabsorbed portion of the white light is reflected, reaches the eye of the observer and causes there a color impression, which is perceived as the intrinsic color of the respective printing ink.
  • Each of the primary colors thus reflects only part of the incident light. Because the 100% blend of cyan, magenta, and yellow inks is not black, but dark brown, almost all printers use black as an additional color (four-color printing).
  • a screen such as.
  • images are generated exclusively by additive color mixing.
  • each point on the television tube represents a small source of light that shines in a special color.
  • three regions of the visible spectrum are selected as colored light sources that cover the entire region of the visible light Spectrum are distributed and the corresponding color receptors in the eye are able to stimulate (eg, red, green, blue violet), so it is possible to produce by additive color mixing images with realistic color representation.
  • a colored halftone image having at least two types of grid-like pixels of different colors. These different colors also contain fluorescent pigments.
  • three different printing inks are used, the pigments of the different printing inks each fluorescing in one of three primary colors (eg red, green, blue-violet) and thus producing additive color mixing.
  • a personnel document can z. For example, by providing a portrait of the document holder printed as a halftone image with normal inks while providing a second portrait produced by additive color mixing from UV-fluorescent, pigmented ink. These two images can be placed side by side on the document.
  • DE 3 906 695 discloses a security element and method, and is considered to be the closest prior art.
  • the invention is therefore based on the object to provide a security element that avoids the disadvantages of the prior art.
  • the security against counterfeiting of security papers and documents of value should be improved.
  • a security paper, a value document, the use of security elements for the production of security paper and a method for the production of printed areas are the subject matter of the independent claims.
  • Advantageous developments of the invention are the subject of the dependent claims.
  • the invention is based on the finding that the security against forgery of security papers and documents of value can be improved by security elements having a color-coded latent image with different image proportions.
  • the present invention therefore relates to a security element for security paper and value documents, such as banknotes, passports, cards, identity documents or the like, the security element having a color-coded latent image with different image proportions.
  • latent image is understood to mean an image that is not visually or at least only very badly perceived by conventional lighting, while using special technical aids, such as eg. B. Lighting with a UV or IR light source is visually visible.
  • a latent image can therefore only be observed in the desired color if it is irradiated with electromagnetic radiation of suitable wavelength. This has the consequence that the color of the latent image changes when an irradiation with light of different wavelengths, for example on the one hand with visible light, on the other hand with ultraviolet light takes place. In this way, different structures can be displayed on a security paper, which are alternately visible depending on the wavelength of the electromagnetic radiation used for the illumination.
  • An "image” is generally understood to mean visually and / or machine-readable information. These include both photorealistic representation as well as line motifs, abstract representations. Photorealistic representations are, for example, portraits (eg of a head of state), landscape motifs, animal motifs and buildings. Due to the increased image information, a photorealistic representation leads to a significantly improved identification or recognizability for the viewer. For abstract representations is z. As to coats of arms, buildings, flags, patterns, characters and codes, all of which can be provided both in perspective and in area representation.
  • a luminescent substance is understood as meaning a chemical compound which is capable of emitting luminescent light upon excitation with light.
  • Luminescent substances can absorb light in a wavelength range from the ultraviolet (UV) over the visible (VIS) to the infrared (IR) region. The emission can follow Stoke's or Anti-Stoke's law.
  • IR absorber is understood as meaning a chemical compound which has at least one absorption with a high absorption coefficient in the infrared spectral range between 800 nm and several ⁇ m, such as, for example, ADS 880 MC (C 32 H 28 S 4 Ni) from Siber Hegner, Absorption maximum at 880 nm.
  • the luminescence is usually divided into fluorescence and phosphorescence, the underlying physical process being the same, namely the emission of electromagnetic radiation upon the return of a molecule from an electronically excited state to the electronic ground state.
  • the difference between fluorescence and phosphorescence lies only in the lifetime of the excited states and thus in the duration of the luminescence after completion of the excitation the luminescent compound.
  • Fluorescence is characterized by an excited state lifetime in the range of picoseconds to microseconds, while phosphorescence is said to span milliseconds and longer.
  • the aim is that the color of the motifs under UV light largely corresponds to the color of a color photograph of the imaged object.
  • the portraits of the respective owners applied to passport documents should reflect the color information of the usual passport photograph as accurately as possible.
  • Abstract motifs are shown as line motifs striking multicolored luminescent.
  • the luminescent colors of the individual elements should correspond to the basic color of the original. The multi-color enhances the identification and recognition of the viewer.
  • a text or individual letters or figures may be mentioned, some of which are printed with luminescent compounds and partly with normal printing inks. With usual lighting are then only fragments of the text; the letters or figures, which are then fully visible under UV illumination.
  • a color-coded latent image with different image proportions can be produced by using luminescent substances and / or IR absorbers. Both luminescent and IR absorbers have the property that they are visually not or at least only very badly perceived under normal lighting; while providing a visually perceptible image when illuminated with a UV light source or illuminated with an IR light source.
  • the different image components of the color-coded latent image can be formed by different luminescent compounds, by different IR absorbers or by mixing luminescent compounds and IR absorbers.
  • a personal document in two ways with the portrait of the document owner, wherein the first portrait is represented by IR absorber, while the second portrait is produced by luminescent compounds.
  • the security of a personal document can be significantly increased and you get at the same time a simple method for checking the authenticity. It merely has to be checked whether the portrait of the document owner produced by IR absorption agrees with the portrait resulting from additive color mixing of luminescent colors.
  • the absorption maxima of the IR absorbers advantageously differ by at least 20 nm.
  • the information encoded by the various substances is disclosed, for example, in US Pat. B. read by means of scanner or CCD camera with different edge filters and evaluated with a downstream image processing program. This complements the information into an easily interpretable, multi-color image or two complementary images.
  • the individual colors can match those of the state of the art known control instruments, such. B. UV hand lamp and IR converter camera to be tested.
  • the different image portions of the security element are formed by at least three fluorescent substances, wherein the fluorescent substances can be excited to fluoresce either at a wavelength of 254 nm or at a wavelength of 254 nm and at a wavelength of 366 nm can be excited to fluorescence.
  • the various image portions of the security element are formed by at least three fluorescent substances, wherein at least one of the fluorescent substances are excited to fluoresce at a wavelength of 366 nm and 254 nm and in addition at least one of the fluorescent substances can be excited to fluorescence only at a wavelength of 254 nm.
  • a combination of three fluorescent substances can be mentioned, wherein the blue emitting substance is excitable both at 254 nm and at 366 nm, while the yellow or red emitting substances are excitable only at 254 nm.
  • the commonly used excitation sources that emit UV radiation of a wavelength of 366 nm, then only a blue emission is generated.
  • a UV source that can be switched to 254 nm is used, then the security element can be recognized as a colored motif that consists of the emission of the colors red, yellow and blue. As a result, the security against counterfeiting is significantly increased.
  • luminescent compounds used in printing inks to produce the color-coded latent images of the invention are:
  • Luminescent or fluorescent substances from Honeywell / Seelze
  • the security element is formed by three fluorescent substances and an IR absorber.
  • the fluorescence of the visually invisible substances can be detected using a UV hand lamp or a UV / IR scanner, while the IR absorption z. B. can be determined by an IR converter camera.
  • a comparison of the image data from the fluorescence and the IR measurement represents an excellent test of the authenticity of the value document.
  • the different image components of the color-coded latent image are formed by phosphorescent substances or in the security element one or more fluorescent substances are replaced by phosphorescent substances or in addition one or more phosphorescent substances are present.
  • image parts that fluoresce on the one hand and on the other phosphoresce so there are parts of the image that linger for different lengths of time. Seen with the naked eye, the different afterglow is not recognizable, but using a sensor very well. A readjustment exclusively with fluorescent substances is thus readily distinguishable from the original.
  • the combination of fluorescence and phosphorescence thus integrates another detectable security feature that can not be detected with a simple UV lamp and visual control with the naked eye, but only by using an appropriate sensor.
  • the different image components of the color-coded latent image are formed by bi-fluorescing substances or if at least one bi-fluorescent substance is additionally used in the security element. These compounds fluoresce when exposed to radiation of different wavelengths in different colors. Depending on the radiation used to illuminate the color-coded latent image, a different image is obtained, depending on the color in which the bi-fluorescent substance illuminates. Depending on the wavelength used for the irradiation, color changes and also changes in the motif can be achieved.
  • By using one or more bi-fluorescent substances in short-wave UV light, e.g. more image information can be detected.
  • a portrait image is printed with three different fluorescent substances. When irradiated with long-wave UV light, substance 1 and substance 2 emit yellow light, substance 3 yellow-greenish light. Upon irradiation with short-wave light, substance 1 emits red light, substance 2 blue light and substance 3 yellow-greenish light.
  • the portrait image When irradiated with long-wave UV light, which is usually emitted by simple UV hand lamps, the portrait image appears monochrome to the viewer, while when excited with short-wave light, the multi-colored, ideally similar to a color photograph image is visible. It can also be used substances in which the reverse effect is visible, so when irradiated with long-wave UV light is a multicolor luminescence image and short-wave UV light, a monochrome luminescence visible.
  • the image components of the security element are formed by at least three IR absorbers, wherein the IR absorbers Have absorption maxima that differ by at least 20 nm.
  • the difference is preferably at least 50 nm, particularly preferably at least 100 nm.
  • the combination of a substance having an absorption maximum at 800 nm, a substance having an absorption maximum at 900 nm and a substance having an absorption maximum at 1000 nm may be mentioned.
  • the amount of each substance present and thus their absorption intensity corresponds to the intensity of one of the basic colors blue, red and green. So z. B. the substance with absorption maximum at 800 nm, the image data for the blue extract, the substance with absorption maximum at 900 nm, the image data for the red extract and the substance with absorption maximum at 1000 nm, the image data for the green extract.
  • the security element additionally contains at least one visually visible color under usual illumination.
  • one or more fluorescent substances can be combined with one or more visually visible substances.
  • z. B a substance in the visible light appears red and at the same time fluoresces red under UV light.
  • Another substance fluoresces yellow under UV light and appears white in visible light, while the third substance fluoresces blue under UV light and also appears white in visible light.
  • a further example of a combination of one or more fluorescent substances with one or more visually visible substances is an embodiment in which a visually visible color as a contour (eg as a line drawing) for the visually invisible fluorescent substance (s) serves.
  • the visually visible colors and the fluorescent substances are printed in registration with each other.
  • black eg, for a portrait
  • the portion printed with visual visible color is converted by software technology into the color component necessary for a true color representation in the luminescence image, and then a corresponding true color image is generated by calculation.
  • Another example of the combination of one or more fluorescent substances with one or more substances that are visually visible under conventional illumination is a greyscale image printed in registration with one or more fluorescents invisible under conventional illumination.
  • the grayscale image corresponds to the information "paper white” or the negative extract of one or more fluorescent substances.
  • latent images the different parts of which consist of visible under normal lighting visually invisible colors and fluorescent substances, by UV hand lamp, scanner or CCD camera.
  • security elements which additionally contain magnetic substances and / or electrically conductive substances.
  • additional feature substances on the one hand, the security against counterfeiting is increased and, on the other hand, a further possibility for coding information is provided.
  • the security element is imprinted by an inkjet, the magnetic substances and the electrically conductive substances consist of particles which have an average size in the nanometer range.
  • one or more fluorescent compounds can be replaced by a visually visible under normal illumination color and printed in register with the image information of the fluorescent substances.
  • the visualization in this case by means of scanner / CCD camera, the proof is made using a downstream image processing software.
  • the respective image portion of the security element is prepared by software processing of the corresponding image information for printing.
  • the shares of luminescent substances to be used are determined by means of a color management system and printed in a grid, according to the invention a bar and honeycomb grid, optionally with negative contour lines. Particularly in the case of striking picture elements, it is possible to achieve increased contrast and thus improved and faster picture or scene recognition by means of negative contour lines.
  • the image or the image information can be verified after printing by means of IR converter cameras or scanners.
  • various value documents such as passport documents
  • a security feature identical to a whole series of documents are additionally provided with an individual security feature.
  • a series of passports can e.g. B. be provided with an identical image and at the same time with the portrait of the respective owner.
  • the security elements according to the invention are suitable for both types of security features, ie both for the elements identical in a series of documents and for individual images in the personalization of documents.
  • fluorescent substances can be pre-printed in offset printing or other non-impact processes in a particular area of the security paper or value document.
  • Passer-accurate personalization eg by means of an inkjet printer
  • the individual security element ie z. B. a single or multi-colored portrait, visible.
  • the combination of the different printing processes results in increased counterfeit protection.
  • adjacent thin strips may be printed in the fluorescent colors red, green and blue and then partially overprinted with a black and white portrait of the passport holder.
  • the black color of the portrait has the property of absorbing the fluorescent radiation emitted by the strips under UV illumination. Under normal lighting conditions, therefore, only the black and white portrait is visible; when exposed to UV light, the fluorescent stripes are then only visible in the areas in which no black color is printed.
  • a UV-absorbing, invisible color could also be used with the black color. In this case, no information would be visible in normal light. When illuminated with UV radiation, in turn, only fluorescent stripes would be recognizable only in those areas where the UV-absorbing ink is not printed.
  • the information printed with UV-absorbing ink would be recognizable as a negative in the fluorescent stripe pattern.
  • the red, green and blue fluorescent stripes are configured so narrow that the eye no longer dissolves the individual stripes, but perceives a monochrome, preferably white, surface due to additive color mixing.
  • a substance absorbing in the spectral range of the fluorescent dyes is printed in raster technology.
  • the grid element size can now be used to control which fluorescent color fraction is absorbed and which penetrates the eye.
  • a raster element which appears white under UV illumination is thus completely absorber-free, while an element appearing black in the image is completely overprinted. Accordingly, depending on which strips are covered with the absorber or not, the corresponding mixing colors for the eye result.
  • the viewer sees a fluorescent true color image, the black portion of which was generated by printing an absorber in suitable raster elements.
  • an area with luminescent substances is completely printed.
  • This surface is then overprinted, for example, with a portrait of the passport holder with ink which absorbs in the region of the emission of the luminescent substance.
  • UV light for example, a yellow fluorescence is seen in the non-overprinted border area, while in the portrait area again only fluorescence is perceptible where no printing ink is is used. Under UV light you can see a negative, fluorescent portrait.
  • the invention also includes a value document, such as a banknote, a stock, a check, a passport, a document of identification, a visa, an ID card, in particular paper-based, or the like, which has a security element of the type described.
  • a value document such as a banknote, a stock, a check, a passport, a document of identification, a visa, an ID card, in particular paper-based, or the like, which has a security element of the type described.
  • the invention also encompasses the use of security elements for producing security paper, the security elements having a color-coded latent image with different image proportions.
  • the invention also encompasses a security paper, wherein the security paper has at least one security element with a color-coded latent image with different image proportions.
  • the present invention also encompasses a process for producing surfaces printed with luminescent substances and / or IR absorbers, in particular for the production of printed security papers and value documents, by a screen printing method, the screen printing method being a bar screen printing method or a honeycomb screen printing method.
  • the type and intensity of the visually perceived mixed color are controlled by the luminous areas of the individual colors.
  • the mixed color changes depending on the intensity of the individual colors.
  • a square grid structure is particularly preferred, wherein the square is divided into three equal strip-shaped sections. The intensity of the individual colors and thus the visually visible color impression, ie the mixed color, results from the "fill level" of the individual fields.
  • the type and intensity of the visually perceived mixed color are controlled by the luminous surfaces of the individual colors.
  • the mixed color perceived by the viewer also changes here depending on the intensity of the individual colors.
  • the intensity of the individual colors and thus the visually visible color impression, ie the mixed color results from the different area coverage of the individual colors in the honeycomb.
  • ⁇ Preferably, screen rulings of 20.36 or 60 lines per cm are used.
  • the width and height of a raster cell is preferably 0.5 mm and less, preferably 0.2 mm and less.
  • the beam and honeycomb printing method according to the invention may advantageously additionally be used to print at least one color which is visually visible under normal illumination, additionally at least one magnetic substance and / or additionally at least one electrically conductive substance.
  • Fig.1 shows a schematic representation of a passport document 10 according to an embodiment of the invention when illuminated with natural light.
  • the front side of the passport 10 contains a passport photograph 12 of the holder printed with normal inks, as well as in machine-readable form further personalized indications 14a to 14f, which inter alia include the name 14a of the holder, an identification number 14b, the issuing location 14c, the date of birth of the holder 14d, the issue date of the passport document 14e and the validity period of the passport document 14f.
  • Fig. 2 shows that in Fig.1 Passport document shown with additional illumination with a UV light source.
  • a further portrait 22 of the passport holder is printed, which is printed with fluorescent substances on the passport document.
  • three luminescent substances each of which emits in one of three primary colors (eg red, green, blue-violet)
  • a largely lifelike image of the holder's passport photo 12 can be generated.
  • the match of passport photograph 12 and fluorescent portrait 22 is an easily verifiable feature for the authenticity of the document and significantly increases the security against counterfeiting.
  • Fig. 3a shows a grid cell of the bar grid, wherein the cell preferably has a rectangular shape, most preferably a square shape.
  • the cell is subdivided into three strip-shaped sections (22, 23, 24) of equal size, to which three differently luminescent color areas are assigned and which preferably fluoresce red / blue or yellow.
  • the in Fig. 3a shown cell with full-surface printing the color impression white.
  • Fig. 3b also shows a grid cell of a bar grid, in which case the strip-shaped sections 22, 23 and 24 are only partially printed. Depending on the area fraction and intensity of the luminescent substance, a corresponding mixed color results for the eye in question.
  • Fig. 3c shows a beam grid cell in which the sections 22, 23 and 24 are not printed and so provide the eye the color impression black.
  • a grid cell of the honeycomb grid is shown.
  • a cell preferably appears as the two-dimensional image of a cuboid, most preferably as the two-dimensional image of a cube, each of which three sides are visible.
  • These three sides 32, 33, 34 are analogous to the strip-shaped sections 22, 23 and 24 in the FIGS. 3a to 3c to see.
  • the surfaces 32, 33 and 34 are in turn completely filled with three different luminescent substances, so that there is the impression of a white cell under UV light for the human eye with additive color mixing.
  • Fig. 4b shows the same cell, wherein the surface portions which occupy the different luminescent substances, turn out differently sized and thus produce a mixed color under UV light.
  • Fig. 4c the honeycomb grid cell is not printed so that it produces the color impression black under UV light for the human eye.

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Claims (15)

  1. Elément de sécurité pour papiers de sécurité et documents de valeur, tels que des billets de banque, des passeports, des documents d'identité ou analogues, comportant une image latente à code-couleur comportant différentes composantes d'image, caractérisé en ce que l'image latente à code-couleur est formée par une image imprimante constituée d'éléments de trame individuels, la trame étant une trame en nid d'abeille ou une trame de barres.
  2. Elément de sécurité selon la revendication 1, caractérisé en ce que la trame est une trame de barres comportant une cellule de trame rectangulaire, de préférence carrée.
  3. Elément de sécurité selon la revendication 2, caractérisé en ce que chaque cellule de trame est subdivisée en trois segments de même aire, en forme de bande, qui en fonction de l'impression colorée visuellement visible souhaitée, sont non imprimés, partiellement imprimés ou complètement imprimés avec des encres individuelles.
  4. Elément de sécurité selon la revendication 1, caractérisé en ce que la trame est une trame en nid d'abeille, comportant une cellule de trame ayant la forme d'une projection bidimensionnelle d'un parallélépipède, de préférence d'un cube, dont dans chaque cas trois faces sont visibles.
  5. Elément de sécurité selon la revendication 4, caractérisé en ce que les trois faces visibles du parallélépipède ou du cube forment chacune des segments d'une cellule de trame, qui, en fonction de l'impression colorée visuellement visible souhaitée, sont non imprimés, partiellement imprimés ou entièrement imprimés avec des encres individuelles.
  6. Elément de sécurité selon la revendication 3 ou 5, caractérisé en ce que les segments sont imprimés par différentes encres luminescentes, en particulier par des encres fluorescentes, phosphorescentes ou bi-fluorescentes, et/ou par des absorbants IR.
  7. Papier de sécurité pour la fabrication de documents de valeur tels que des billets de banque, des passeports, des documents d'identité ou analogues, caractérisé en ce que le papier de sécurité comprend au moins un élément de sécurité selon au moins l'une des revendications 1 à 6.
  8. Document de valeur, tel qu'un billet de banque, un passeport, un document d'identité ou analogues, caractérisé en ce que le document de valeur comprend au moins un élément de sécurité selon au moins l'une des revendications 1 à 6.
  9. Procédé de fabrication d'un élément de sécurité comportant des surfaces imprimées avec des substances luminescentes et/ou des absorbants IR, et qui forment une image latente à code couleur comportant différentes composantes d'image, caractérisé en ce que, dans le procédé, les surfaces sont imprimées par un procédé de similigravure, plus précisément un procédé de similigravure à trame de barres ou un procédé de similigravure à trame en nid d'abeille.
  10. Procédé selon la revendication 9, caractérisé en ce que le procédé de similigravure à trame de barres permet de produire une trame de barres comportant une cellule de trame rectangulaire, de préférence carrée.
  11. Procédé selon la revendication 10, caractérisé en ce que, grâce au procédé de similigravure à trame de barres, chaque cellule de trame est produite avec trois segments de taille identique, en forme de bande, qui en fonction de l'impression colorée visuellement visible souhaitée ne sont pas imprimés, sont partiellement imprimés ou entièrement imprimés avec des encres individuelles.
  12. Procédé selon la revendication 9, caractérisé en ce que, sous l'effet du procédé de similigravure à trame en nid d'abeille, une trame en nid d'abeille est produite, comportant une cellule de trame sous forme d'une projection bidimensionnelle d'un parallélépipède, de préférence un cube, dont dans chaque cas trois faces sont visibles.
  13. Procédé selon la revendication 12, caractérisé en ce que, dans le procédé de similigravure à trame en nid d'abeille, les trois faces visibles du parallélépipède ou du cube forment chacune des segments d'une cellule de trame, qui en fonction de l'impression colorée visuellement visible souhaitée, ne sont pas imprimés, sont partiellement imprimés ou entièrement imprimés avec des encres individuelles.
  14. Procédé selon au moins l'une des revendications 9 à 13, caractérisé en ce que les différentes composantes d'image de l'image latente à code couleur sont formées par des substances fluorescentes, par des substances phosphorescentes, par des substances bi-fluorescentes, par des absorbants IR ou par des combinaisons de ces substances.
  15. Procédé selon au moins l'une des revendications 9 à 14, caractérisé en ce qu'en plus au moins une encre visuellement visible, une substance magnétique et/ou une substance conductrice de l'électricité, sont appliquées par impression.
EP04803864.0A 2003-12-22 2004-12-14 Element de securite pour papiers de securite et documents de valeur Expired - Lifetime EP1703885B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361131A DE10361131A1 (de) 2003-12-22 2003-12-22 Sicherheitselement für Sicherheitspapiere und Wertdokumente
PCT/EP2004/014242 WO2005062692A2 (fr) 2003-12-22 2004-12-14 Element de securite pour papiers de securite et documents de valeur

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EP1703885A2 EP1703885A2 (fr) 2006-09-27
EP1703885B1 true EP1703885B1 (fr) 2014-03-12

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DE (1) DE10361131A1 (fr)
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US11124009B2 (en) 2017-04-26 2021-09-21 Muehlbauer GmbH & Co. KG Security inlay for an identity document and method for producing a security inlay for an identity document
US11285754B2 (en) 2017-04-26 2022-03-29 Muehlbauer GmbH & Co. KG Security inlay having a UV coating for an identity document and method for producing a security inlay having a UV coating for an identity document

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JP5541583B2 (ja) * 2010-08-04 2014-07-09 大日本印刷株式会社 発光媒体および発光媒体の確認方法
DE102013218861A1 (de) * 2013-09-19 2015-03-19 Bundesdruckerei Gmbh Halbzeug, Sicherheitsdokument und Verfahren zur Herstellung solcher mit einem UV-anregbaren Lumineszenzsicherheitsdruck
DE102015014560A1 (de) 2015-11-11 2017-05-11 Giesecke & Devrient Gmbh Pigmentsystem, Lumineszenzfarbsystem und Wertdokument
PL239770B1 (pl) 2019-12-20 2022-01-03 Polska Wytwornia Papierow Wartosciowych Spolka Akcyjna Kompozycja receptury farbowej do drukowania wielokolorowego obrazu w elementach zabezpieczajacych nanoszonych na podloze, widzialnego zarowno w zakresie dlugosci fal swiatla widzialnego (VIS) jak i w zakresie dlugosci fal swiatla ultrafioletowego (UV), sposob wytwarzania ukladu zawierajacego element zabezpieczajacy na podlozu oraz uklad przeznaczony do wykorzystywania jako cecha zabezpieczajaca lub identyfikacyjna znakowanego ukladem obiektu
CN115534550B (zh) * 2021-10-19 2025-02-18 量子云码(福建)科技有限公司 一种防伪方法、装置、计算机设备及存储介质
DE102022103817B4 (de) 2022-02-17 2023-09-07 Bundesdruckerei Gmbh Sicherheitsfaser insbesondere für die Verwendung in Sicherheitsdokumenten und Sicherheitsdokument
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US11124009B2 (en) 2017-04-26 2021-09-21 Muehlbauer GmbH & Co. KG Security inlay for an identity document and method for producing a security inlay for an identity document
US11285754B2 (en) 2017-04-26 2022-03-29 Muehlbauer GmbH & Co. KG Security inlay having a UV coating for an identity document and method for producing a security inlay having a UV coating for an identity document

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DE10361131A1 (de) 2005-07-21
WO2005062692A3 (fr) 2008-11-06
EP1703885A2 (fr) 2006-09-27
WO2005062692A2 (fr) 2005-07-14

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