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
  • B42D25/30—Identification or security features, e.g. for preventing forgery
  • B42D25/333—Watermarks
• • 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
  • B42D15/00—Printed matter of special format or style not otherwise provided for
  • B42D15/0053—Forms specially designed for commercial use, e.g. bills, receipts, offer or order sheets, coupons
• • 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
  • B42D15/00—Printed matter of special format or style not otherwise provided for
  • B42D15/0073—Printed matter of special format or style not otherwise provided for characterised by shape or material of the sheets
  • B42D15/0093—Sheet 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
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/26—Entrance cards; Admission tickets
• • 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
  • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials

Definitions

• the invention relates to a security element, namely a bar code in the form of a watermark, as well as a security paper and a value or security document produced therefrom, such as a banknote, for example.
• the bar code is not only the length of the bar code that is problematic, but in particular its verifiability for the purpose of determining the authenticity. Because the wider the bars placed in the paper as watermarks, the more uneven their appearance when viewed through transmitted light. This is because it is very difficult to create a watermark with an evenly dark surface.
• the paper screen is embossed for the production of the watermark in order to influence the accumulation of the paper fibers during the sheet formation. If the screen is deeply embossed, more paper mass will accumulate in this area, while an embossing will reduction of paper pulp.
• the edges of the surface in particular map well. The surface itself either becomes lighter or darker on the inside.
• the object of the present invention is to propose a barcode in the form of a watermark which is more versatile and comparatively space-saving.
• Another object of the invention is to provide a security paper equipped with such a bar code and a security or security document produced therefrom, as well as a method and a paper screen for producing the security paper.
• the separating fields by which the information-conveying bars are separated from one another are designed as clearly detectable watermarks. These separating fields are then detected by the barcode reader as (separating field) bars. However, the actual bar code information is not determined by the width of the (separating field) bars detected, but rather by the width of the fields lying between the detected (separating field) bars, these fields representing the actual bars of the bar code. This means that the separation field bars mark the beginning and end of the information-conveying bars.
• the information-conveying bars of the bar code lying between the separating fields can be chosen to be of any width become. Since the brightness of the information-conveying bars themselves is not included in the evaluation, there are no problems with an unevenly filled bar area that is dark or light in transmitted light.
• the separating fields can be designed to be particularly narrow, in particular by using electrotypes on the paper screen, as a result of which the overall length of the bar code is comparatively short and saves space.
• the bar code In order to further reduce the length of the bar code, it is advantageous to design the bar code as a two-dimensional bar code that contains several e.g. has parallel information tracks.
• a particularly advantageous embodiment of the invention provides that the fields lying between the separating fields, which form the actual information-conveying bars of the bar code, are not designed as watermarks, so that the separating fields alone can be recognized as watermark bars in transmitted light.
• the first and the last separating field limit the bar code.
• the information-conveying bars of the bar code can also be designed as watermarks, the separating fields being designed as light watermarks and the information-conveying bars as dark watermarks - or vice versa.
• the separator it is preferable not to design the information-conveying bars but the separator as bright watermarks, since otherwise there would be a risk of hole formation in the paper with bright information-related bars with increasing bar width.
• a separating field of the bar code defines, for example, a separating field on the edge, that is to say first or last by its characteristic width or fiber density, the information content which can be assigned to bars of different widths, ie whether a wide bar indicates a "1" and a narrow bar a "0" or vice versa.
• the first bar can be defined as a start bit and its width can indicate whether a wide bar of the bar code indicates "1" and a narrow bar indicates "0" or vice versa.
• a security or value document is equipped with an additional storage medium.
• This can be, for example, a magnetic storage medium, such as a magnetic track, or an electronic storage medium, such as a microchip with integrated circuits.
• the bar code can also contain data for the encryption or decryption of information instead of the value of a document.
• the document value reproduced by the barcode can then advantageously be stored in the storage medium together with the serial number of the document or, for example, the result of a predetermined link between the value number and the serial number. This increases the security against forgery and the verifiability of the authenticity of a document.
• the link can be stored in the additional storage medium when the document is being produced or placed on the market.
• the result of the link can be read from the storage medium.
• the serial number can be reconstructed together with the value of the document that is particularly easy to read from the barcode watermark. If the serial number is also read directly from the document, there is an additional possibility to check whether a read-out storage medium actually belongs to an individual document, such as a banknote.
• randomnesses in the design of the barcode according to the invention such as the cloudiness of the paper in the barcode area or irregularities in the margins of individual sections, can be used as an additional measured value in order to increase the security against forgery of a document or to improve the authenticity check.
• FIG. 1 shows a banknote with a watermark bar code according to the invention
• FIG. 2 shows a transmitted light view of a watermark bar code according to the invention
• FIG. 3 shows a transmitted light view of a further watermark bar code according to the invention
• FIG. 4 shows a paper screen schematically in cross section
• FIG. 5 shows a transmitted light intensity curve according to a first embodiment of a watermark bar code according to the invention
• FIG. 6 shows a transmitted light intensity curve according to a second embodiment of a watermark bar code according to the invention
• FIG. 7 shows a transmitted light intensity curve according to a third embodiment of a watermark bar code according to the invention
• FIG. 8 shows a transmitted light view of a watermark bar code according to the prior art
• FIG. 9 shows a transmitted light intensity curve for a watermark bar code according to the prior art.
• FIG. 10 shows a transmitted light intensity curve for a watermark bar code according to a further prior art.
• Figure 1 shows an example of one of many possible securities and security documents, a banknote 1 with the denomination 2 of "EUR 100".
• the banknote 1 has a two-dimensional bar code 3, which is in the manner of a watermark in the security paper from which the banknote 1 is made , is integrated.
• FIG. 8 schematically shows a watermark bar code 3 viewed in transmitted light.
• the bar code 3 was produced with an embossed paper screen, which promotes the accumulation of paper fibers in its embossed areas, which produce the bars 5 of the bar code 3.
• the fiber density ie the paper thickness, decreases towards the interior of the beam surfaces, so that although the surface edge can be depicted well, the surface interior, on the other hand, appears lighter again in transmitted light. This is shown graphically in FIG.
• FIG. 10 shows the transmitted light intensity I for a bar code known from DE 3034 916 AI, in which the above-described problem does not occur. Accordingly, the areas of the paper screen for generating the bars of the bar code are embossed into the paper screen as right-angled, isosceles triangles. The one with the steep edge in the paper
• I generated part of the watermark can be easily recognized in transmitted light as a pronounced dark or light streak and marks the beginning of a bar 5.
• the bar 5 represents a "1" or "0” does not depend on its width but on whether the bar is light or dark, i.e. whether the embossing of the paper screen is directed upwards or downwards from the paper screen level.
• the length of the entire bar code can also be kept short, because separating fields 6 between the individual bars 5 can be omitted for their clear, mutual delimitation.
• the bar code is based on a digital Valley coding is limited because only a distinction is made between light and dark fields.
• FIGS. 2 and 3 each show a section of different embodiments of a watermark bar code 3 from FIG. 1 along line AA when viewed in transmitted light.
• it is a digital bar code consisting of zeros and ones, the bar width indicating the value “0” or “1”.
• the bars 5 are separated from one another by separating fields 6, the first and the last separating field delimiting the bar code.
• the bar code shown in FIGS. 2 and 3 is therefore 0-1-1-0.
• the separating fields 6 appear dark in comparison to the bars 5. That is to say that in the regions of the separating fields 6 the bank note has an increased fiber density, which was produced by appropriately embossing the paper screen used to produce the bank note paper. This embossing of the paper screen causes increased paper fiber buildup during paper formation, as a result of which the transmitted light intensity is correspondingly reduced when the paper is viewed in transmitted light and the separating fields 6 appear dark.
• the bars 5, which define the actual information of the bar code do not appear lighter or darker in transmitted light than the banknote material surrounding the bar code, because the bars 5 have no watermark characteristics.
• the width of the information-conveying bars is only determined indirectly via the distance between the detected separating bars 6.
• the separating fields 6 of the bar code appear bright, apart from the far left separating field.
• the bright separation fields 6 can be generated in a particularly striking manner by using so-called electrotypes. Electrotypes are usually small metal parts that are firmly attached to one side of the paper screen, for example soldered or by means of tabs that are inserted and bent into the mesh of the screen. This enables very narrow and particularly bright transmitted light effects to be achieved, which are easy to detect by sensors.
• the outer left separating field 6 in FIG. 3 defines that the subsequent wide bars are to be rated as “0” and the narrow bars 5 as “1”, as is also the case in FIG. 2. If the outer left separating field 6, like the other separating fields 6, were designed as a bright separating field, the information content of the bars 5 would be reversed and the total information of the bar code would not be 0-1-1-0 but 1-0-0-1.
• the width of the separating field can also be used to indicate the information content of the wide and narrow bars 5. Both options can also be combined, in particular to define further information of the barcode.
• the first or last bar 5 can also serve as a start bit or end bit, the width of the start bit or end bit bar, for example, providing information as to whether the wide bars are to be rated as “0” and the narrow bars as “1” are or vice versa.
• FIG. 4 shows, by way of example and only schematically, a section of a paper screen 8 with which a paper with a watermark barcode according to FIG. 3 can be produced.
• the paper screen 8 has correspondingly spaced electrotypes 7 on its paper-forming surface for producing the bright separating fields 6 and a deeply embossed area 9 for producing the outer left separating field 6, which has an increased paper thickness or fiber density and therefore appears dark in transmitted light.
• FIG. 5 shows an idealized transmitted light intensity curve of a bar code similar to the bar code shown in FIG. 2 with dark separating fields 6 and with information-imparting bars 5.
• the transmitted light intensity I in the areas of the separating fields 6 is below a normal transmitted light intensity Io of the banknote paper, since the fiber density F is correspondingly high in the areas of the separation fields 6.
• the transmitted light intensity curve I thus coincides with the fiber density curve F when the increase in intensity I + is plotted up and the fiber density increase F + is plotted down. Transmitted light intensity curve and fiber density curve are therefore designated together with the reference number 4.
• FIG. 6 shows the transmitted light intensity and fiber density curve 4 for a bar code similar to the bar code shown in FIG. 3.
• the transmitted light intensities I in the areas of the separating fields 6 are above the normal weight intensity Io, apart from the outer left separating field 6, in which the transmitted light intensity I is below the normal
• Transmitted light intensity Io lies.
• the transmitted light intensity curve is shown in FIG. 6 in a less idealized manner, since it can be seen that the transmitted light intensity or fiber density despite its generally uniform distribution Io, Fo over the extent the bar 5 of the bar code fluctuates slightly around an average value Io or Fo, which indicates the “normal transmitted light intensity” and “general fiber density”.
• FIG. 9 Another embodiment of the invention is shown in FIG. This is essentially a combination of the prior art according to FIG. 9 and the embodiment according to FIG. 6 or FIG. 3. That is to say, both the separating fields 6 and the bars 5 are integrated in the paper in the manner of a watermark, the Information-conveying bars 5 appear in transmitted light as dark areas with the somewhat lighter centers initially described as disadvantageous, and the separating fields 6 appear as easily identifiable, distinctly bright lines. The particularly high transmitted light intensity in the areas of the separating fields 6 exceeds the transmitted light intensity in the lighter, central areas of the information-mediating bars 5 in such a way that a misinterpretation, as explained at the beginning, can be excluded.
• the embodiment according to FIG. 7 offers an additional contrast increase between the areas of the bars 5 and the separating fields 6 and thus an improved readability of the bar code compared to the embodiments according to FIGS. 5 and 6 or 2 and 3.

Landscapes

• Business, Economics & Management (AREA)
• Accounting & Taxation (AREA)
• Finance (AREA)
• Credit Cards Or The Like (AREA)
• Paper (AREA)
• Inspection Of Paper Currency And Valuable Securities (AREA)
• Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
• Burglar Alarm Systems (AREA)
• Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
• Editing Of Facsimile Originals (AREA)
• Materials For Medical Uses (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

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ID=27816009

Family Applications (1)

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Families Citing this family (4)

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• 2002
  • 2002-03-27 DE DE10213794A patent/DE10213794B4/de not_active Expired - Fee Related
• 2003
  • 2003-03-24 AT AT03744848T patent/ATE375870T1/de active
  • 2003-03-24 ES ES03744848T patent/ES2290482T3/es not_active Expired - Lifetime
  • 2003-03-24 CN CN03807002.2A patent/CN100509430C/zh not_active Expired - Fee Related
  • 2003-03-24 SI SI200331075T patent/SI1494874T1/sl unknown
  • 2003-03-24 EP EP03744848A patent/EP1494874B1/fr not_active Expired - Lifetime
  • 2003-03-24 BR BRPI0308772-7B1A patent/BR0308772B1/pt not_active IP Right Cessation
  • 2003-03-24 KR KR1020047015373A patent/KR100984210B1/ko not_active Expired - Fee Related
  • 2003-03-24 AU AU2003226704A patent/AU2003226704A1/en not_active Abandoned
  • 2003-03-24 WO PCT/EP2003/003059 patent/WO2003080365A2/fr not_active Ceased
  • 2003-03-24 RU RU2004131654/12A patent/RU2337011C2/ru not_active IP Right Cessation
  • 2003-03-24 UA UA20041008769A patent/UA86742C2/ru unknown
  • 2003-03-24 PL PL371195A patent/PL218532B1/pl unknown
  • 2003-03-24 DE DE50308409T patent/DE50308409D1/de not_active Expired - Lifetime

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