Classifications

• • 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
  • B41M1/00—Inking and printing with a printer's forme
  • B41M1/10—Intaglio printing ; Gravure 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

Definitions

• the invention relates to a data carrier with a security print image and a printing plate for producing such a print image.
• intaglio printing is often used to produce high-quality printed products, such as banknotes, shares or the like, since the production of printing plates is very complex and expensive and a very characteristic print image that cannot be produced with the help of other printing processes can be produced with this process imitate.
• flat representations are produced by engraving lines lying closely next to one another, the individual engraving lines generally being fractions of a mm wide and separated from one another by non-engraved webs.
• the engraving lines of the printing plate are filled with ink for the printing process.
• the excess ink is removed from the printing plate using a wiper cylinder or a squeegee so that only the engraving lines are filled with ink. This wiping process removes all ink components on the printing plate surface.
• the data carrier to be printed usually paper
• the data carrier is pressed into the engraving lines of the printing plate filled with ink and thus comes into contact with the printing ink.
• the data carrier is detached, it pulls the printing ink out of the recesses in the engraving lines.
• the print image produced in this way has print lines which vary in the thickness of the ink layer depending on the depth of the engraving. If translucent printing inks are used in intaglio printing, a light color tint is obtained when printing on a white data medium with thin ink layer thicknesses and darker shades when printing with thick ink layers.
• the intaglio printing process can produce printed images with very large ink layer thicknesses.
• the resulting print images can even be felt manually when using correspondingly deep engravings.
• appropriately fine engravings extremely fine, extremely sharp print lines are also possible.
• WO 97/48555 describes a method with which intaglio printing plates are produced in a reproducible, mechanical manner and in which line width and line depth can be set largely independently of one another.
• the lines of a line template are recorded and the area of each line is determined exactly.
• the outer contour of this surface is first engraved with an engraving tool, for example a rotating stylus or a laser beam, in order to surround the surface cleanly.
• the bordered area of the surface is then cleared using the same or a different engraving tool, so that the entire line is engraved exactly according to the line template. In this way, even very narrow lines with a relatively large engraving depth, i.e. a high color application on the disk. This way, even very fine lines can be felt as a relief.
• the invention is based on the object of proposing a data carrier with a print image produced in intaglio printing which has a very high level of security against forgery. This task is solved by the independent claims. Further training is the subject of the subclaims.
• the invention is based on assembling the printed image provided on the data carrier from a number of contrasting structural elements, these structural elements being arranged in exact register with one another, and at least some of these structural elements being felt in a relief-like and tactile manner, and some of the structural elements being flat and non-tactile is perceptible.
• These structural elements are preferably produced on the data carrier in a printing process using intaglio printing.
• registerer denotes the exact connection or bordering of the large-area and filigree or the relief-like and flat structural elements in the transition area, in which large-area and filigree or relief-like and flat structures abut one another.
• Relief-like refers to an elevation of the structural elements relative to the data carrier surface as a reference plane, which is more than approx. 30 ⁇ m, preferably approx. 40 ⁇ m to approx. 100 ⁇ m.
• "flat” ideally denotes an in Data carrier surface as a reference plane is a structural element, which may, however, be elevated by a maximum of approximately 25 ⁇ m to 30 ⁇ m in relation to the reference plane, but preferably not more than 25 ⁇ m.
• a relief on the data carrier surface does not match the engraving depth of the printing plate identically. This is due to the fact that the data carrier is not pressed down to the base of the printing plate engraving during the printing process and that the color present in the depressions of the printing plate is not completely transferred to the data carrier.
• the engraving depth of the printing plate for flow-like structural elements in the range from approx. 40 ⁇ m to 200 ⁇ m, preferably in the range from approx. 55 ⁇ m to 150 ⁇ m and for flat structural elements in the range from approx. 5 ⁇ m to 50 ⁇ m, preferably in the range from approx.
• the impression of brightness of the color tone depends on the printed layer thickness, the type, composition and concentration of pigment.
• Layer thicknesses between approx. 2 ⁇ m and 5 ⁇ m produce a lighter, more translucent color, whereby prints with such layer thicknesses are not tactile.
• the color is darker, but the printed image is still not noticeable. Only with layer thicknesses of approx. 10 ⁇ m to 30 ⁇ m does the now much darker printed image become tactile.
• a visually recognizable contrast between the structural elements according to the invention can thus be generated via the color layer thickness. Since tactile perception is a subjective sensation, one can
• the security against forgery of the security element or security print image according to the invention can finally be further increased by a frequent change between the different structural elements takes place.
• the structural elements differ in terms of their areal extent and / or their light / dark contrast and / or their tactility.
• the exact register between the various structural elements and the associated special visual impression of the security print image can only be produced by intaglio printing, ie using a printing plate, into which the security print image is completely engraved and with the necessary register.
• the structural elements can also be combined with negative elements.
• Negative element here denotes an area of any shape not covered with printing ink in an environment covered with printing ink.
• Such negative elements can be present within a structural element as non-printed pictorial or alphanumeric information, such as a logo, the denomination of a currency or a lettering, for example that a structural element is not completely covered with printing ink.
• the negative elements can also be designed as a dividing line between the individual structural elements. In this case, the negative elements preferably have the form of complicated line patterns, such as guilloches, for example.
• Printing plate can be taken into account in a very simple way. For a potential counterfeiter, however, they pose an additional problem.
• some of the structural elements according to the invention have a large area and some of the structural elements have a filigree design.
• “Large-area” means that the structural elements are not produced by raster printing, but actually consist of flat elements with a certain width> approx. 1 mm.
• Filigree on the other hand, means that there are thin lines that may intersect and are intertwined, such as guilloches.
• the line width of these filigree structures is ⁇ 1 mm and is preferably less than 0.5 mm.
• the structural elements are selected and arranged in register with one another in such a way that at least two visually recognizable, preferably overlapping information items arise.
• a first piece of information can be composed of relief-like and tactile tactile structural elements, while a second piece of information consists at least for the most part of flat, non-tactile structural elements.
• the information can be composed, for example, as follows: All filigree structural elements and some of the large structural elements of the security element according to the invention are embodied in a tactile, relief-like manner and form a first visually recognizable piece of information. Some of these tactile structural elements also belong to a second piece of information which, in addition to tactile tactile, also includes flat, non-tactile structural elements. In front- In addition, the flat structural elements of the second information take up a larger area, so that the visual impression of the second information is primarily determined by the flat structural elements. With regard to the second information, the tactile structural elements merely form a kind of superimposed, preferably darker pattern.
• filigree structural elements adjoins the second piece of information in register. According to a special embodiment, these filigree structural elements continue the contour lines of the relief-like structural elements common to both pieces of information.
• this security element can have negative elements.
• the structural elements of the first and second information items can be separated by a narrow, non-printed contour line.
• the structural elements that only belong to the first piece of information can also continue this non-printed contour line.
• the printing plate with which this print image is generated has the corresponding structural elements in the form of depressions, these structural elements also being arranged here in an exact register with one another.
• the engraving depth of the individual structural elements is chosen so that a first part of these structural elements can be felt in a relief-like and tactile manner after the printing process and the second part of the structural elements has a smaller engraving depth, so that the structural elements can be felt flat and not tactile after the printing process.
• the engraving depth of the first part of the structural elements is preferably approximately 40 ⁇ m to 200 ⁇ m, preferably approximately 55 ⁇ m to 150 ⁇ m and that of the second part approximately 5 ⁇ m to 50 ⁇ m, preferably approximately 15 ⁇ m to 40 ⁇ m.
• the relief height achieved in the print result depends not only on the engraving depth of the printing plate, but also on the properties of the substrate and the printing ink, in extreme cases an engraving depth of 40 ⁇ m can already lead to a relief-like print image, while for other material and printing parameters, an engraving depth of 50 ⁇ m can still lead to a flat print image. In each specific application, however, the engravings that lead to relief-like printed image areas are always deeper than those that produce so-called flat, tactile non-tactile image areas.
• the structural elements are designed such that the area in which the two pieces of information overlap either remains unprinted or is reproduced in a tonal value that is visually different from the relief-like and tactile as well as the flat and not clearly distinguishable structural elements.
• the relief-like and the flat structural elements as well as the unprinted or contrasting overlap area are again in exact register with each other.
• Fig. 1 shows a first embodiment of the invention
• FIG. 2 shows a second embodiment of the invention
• the security element 1 shows a first embodiment of the security element 1 according to the invention.
• the security element 1 is composed of a large number of structural elements which are arranged in an exact register with one another. Some of these structural elements, shown in black in the figure, can be felt in a relief-like and tactile manner, the other part of the structural elements, shown in gray in the figure, is designed to be flat and not tactile. All these structural elements are produced in a printing process using intaglio printing on any substrate. In the example shown, the individual structural elements are arranged with respect to one another in such a way that two visually recognizable information are created. This is the number "2000", which is overlaid by the lettering "banknote". For reasons of clarity, the principle of the invention is only explained with reference to the structural elements belonging to the number “2” and the letter “B”. The other information components are composed analogously.
• the number “2” is composed of the large-area, flat and tactile tactile structural elements 2, the structural elements 3, which are also large, but designed in a relief-like and tactile sense, and the filigree and relief-like, tactile tactile structural elements 4, 7.
• the structural elements 4 form the contour line of the number "2". All structural elements and in particular structural elements 4 and 7 as well as 3 and 4 are arranged in register with one another in the sense of the invention. Furthermore, the different structural elements, e.g. the structural elements 2, 4 or 2, 3 directly to each other.
• the structural elements 3, 7 are at the same time part of a second piece of information which, together with the filigree, relief-like and tactile tactile structural elements 5, form the letter “B.”
• the structural elements 5 are designed as filigree lines that match the structural elements 3 and 7. They enclose the unprinted areas 6.
• “2000” is also composed of flat, tactile non-tactile structural elements 2, filigree, relief-like and tactile tactile structural elements 7 and large-area, tactile tactile structural elements 3. Analogous to FIG. 1 the flat, imperceptible structural elements are highlighted in gray and the relief-like, tangible structural elements are highlighted in black.
• the filigree, relief-like contour line 4 is missing in this case. For this reason, all structural elements in relief-like design and tactile feel are simultaneously part of the second information. Outside the overlap area, the relief-like, tactile tactile structural elements 3 and 7 are supplemented by further relief-like, filigree structural elements 5. Only the overall view of the structural elements 3, 5, 7 makes the second information, here an eagle, visually recognizable.
• Both the security element 1 shown in FIG. 1 and the one shown in FIG. 2 are produced in one printing process.
• a glazing printing ink is preferably used for this, so that the flat structural elements 2 appear in a lighter shade, while the relief-like structural elements 3, 4, 5, 7 are reproduced in a dark shade.
• the color differences arise from different layers of paint. Accordingly, the printing form used for the printing process has engravings of different depths.
• Fig. 3 shows the section of a printing plate according to the invention in cross section.
• the printing plate 8 has engraved areas 9, 10 that are recessed relative to the printing plate surface 11.
• the first engraving area 9 is engraved with an engraving depth a, the second engraving area 10 with an engraving depth b.
• the two engraving areas 9, 10 directly adjoin one another at the level of the printing plate surface 11 and are separated from one another by a separating edge 12, the upper edge 13 of which tapering at the level of the printing plate surface 11.
• the pressure plate 8 can also be designed so that the upper edge 13 slightly, ie a few microns below the level of Printing plate surface 11 is. This separating edge ensures that adjacent color areas have sharp contours.
• German patent application P 198 45 436.8 to which reference is explicitly made here.
• the engraving area 9 produces a lighter shade than the deeper engraving area 10 during the printing process. If structural elements which cannot be felt are produced with the engraving area 9, the engraving depth a is between 10 ⁇ m and 40 ⁇ m. Engraving depths of 10 ⁇ m to 25 ⁇ m are preferred for light colors that have a glazing effect.
• the relief-like, tactile tactile structural elements can be produced, for example, with the engraving area 10. In this case, the engraving depth b is between 40 ⁇ m and 200 ⁇ m.
• FIG. 4 schematically shows the detail of a substrate 14, such as paper, which was printed with a printing plate 8 according to FIG. 3 by intaglio printing.
• the substrate 14 is pressed into the engraving areas 9, 10, wherein corresponding depressions 16, 17 can remain on the underside 15 of the substrate, depending on how much pressure is exerted on the substrate during the printing process.
• the substrate top 18 has corresponding elevations in the areas in which the depressions 16, 17 lie on the bottom. These elevations are covered by color layers 19, 20, which were picked up from the substrate surface 18 from the engraving areas 9, 10 during the printing process.
• the level difference between the non-printed substrate surface and the surfaces of the respective color areas 19, 20 is defined as the height of the printed image relief x, y.
• the color layer thicknesses x, y continuously borrowed up to a boundary line, which is defined by the upper edge 13 of the separating edge 12 of the pressure plate 8.
• a boundary line which is defined by the upper edge 13 of the separating edge 12 of the pressure plate 8.
• FIG. 5a shows the enlarged detail A from FIG. 2, from which it becomes clear that the individual structural elements are arranged in register with one another in an exact register.
• the structural elements 7 are flush with the structural elements 2.
• the structural elements 5 are arranged in register with this. They border on the structural elements 2 with a register and pass more or less seamlessly into the contour line of the structural elements 7.
• 5b and 5c show the critical border areas after such a forgery attempt.
• the structural elements 2 protrude beyond the structural elements 7, so that a part of the through the
• Structural elements 5 framed areas 6 is filled with color.
• the structural elements 7 end outside the structural elements 2. Since such offsets give the overall impression of the If the printed image is severely impaired, attempts to forge the security element according to the invention are very obvious.
• FIGS. 6 and 7 A further embodiment variant of the security element 1 according to the invention is shown in FIGS. 6 and 7.
• the first piece of information is the letter "B", which has relief-like, tactile tactile structural elements 3, 7 in the areas shown in black.
• the second piece of information in the present example is the number "2", which is largely gray and has large and flat areas , not tactile structural elements 2 is reproduced.
• the area 21 in which the two pieces of information overlap is unprinted in accordance with the embodiment variant of FIG. 6, but is enclosed by printed areas and its extent is therefore clearly visible.
• the corners of the relief-like structural elements 3 and of the flat structural elements 2 abut one another with an exact register, which cannot be achieved in this way with conventional methods.
• the area 22 in which the two characters "B" and "2" overlap is printed.
• the overlap region 22 is reproduced here in such a way that its contrast or tonal value differs visually from that of the immediately adjacent, relief-like structural elements 3 and that of the flat structural elements 2.
• the overlap area 22 is lighter than the relief-like areas 3, 7 and the flat areas 2 of the printed image. That is, the color layer is the thinnest in the area 22 and the surface 22 is therefore flat and tactile not tactile.
• the register between the individual structural elements can be checked particularly well at the corners and edges at which they adjoin one another.
• the security element according to the invention can be printed on any substrates. These are preferably paper data carriers. But also film substrates can be provided with the security element according to the invention.
• the security element can be attached wherever high demands are placed on counterfeit protection, such as for securities, banknotes, ID cards, passports, but also for certificates or higher-value admission tickets.

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• Business, Economics & Management (AREA)
• Accounting & Taxation (AREA)
• Finance (AREA)
• Printing Methods (AREA)
• Treatment Of Fiber Materials (AREA)
• Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
• Details Of Garments (AREA)
• Manufacture Or Reproduction Of Printing Formes (AREA)

Applications Claiming Priority (3)

Publications (3)

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• 1999
  • 1999-12-30 DE DE19963849A patent/DE19963849A1/de not_active Withdrawn
• 2000
  • 2000-12-28 BR BRPI0016887-4A patent/BR0016887B1/pt not_active IP Right Cessation
  • 2000-12-28 MX MXPA02006507A patent/MXPA02006507A/es active IP Right Grant
  • 2000-12-28 DE DE50014854T patent/DE50014854D1/de not_active Expired - Lifetime
  • 2000-12-28 ES ES00991275T patent/ES2298170T3/es not_active Expired - Lifetime
  • 2000-12-28 PL PL00358721A patent/PL196059B1/pl unknown
  • 2000-12-28 WO PCT/EP2000/013309 patent/WO2001049505A1/fr not_active Ceased
  • 2000-12-28 US US10/168,534 patent/US7311043B2/en not_active Expired - Fee Related
  • 2000-12-28 EP EP00991275.9A patent/EP1268213B2/fr not_active Expired - Lifetime
  • 2000-12-28 AU AU31649/01A patent/AU772672B2/en not_active Ceased
  • 2000-12-28 AT AT00991275T patent/ATE380674T1/de active
  • 2000-12-28 RU RU2002120472/12A patent/RU2258612C2/ru not_active IP Right Cessation
  • 2000-12-28 CA CA002395964A patent/CA2395964C/fr not_active Expired - Fee Related
  • 2000-12-28 JP JP2001549851A patent/JP2003519034A/ja active Pending
  • 2000-12-28 CN CNB008179905A patent/CN1197712C/zh not_active Expired - Fee Related
• 2002
  • 2002-06-13 ZA ZA200204748A patent/ZA200204748B/xx unknown

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