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
  • B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
  • B41N1/00—Printing plates or foils; Materials therefor
  • B41N1/04—Printing plates or foils; Materials therefor metallic
  • B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio 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
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
  • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
  • B44C1/14—Metallic leaves or foils, e.g. gold leaf
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
  • B44C1/10—Applying flat materials, e.g. leaflets, pieces of fabrics
  • B44C1/14—Metallic leaves or foils, e.g. gold leaf
  • B44C1/145—Devices for applying metal leaves of foils

Definitions

• the invention relates to a method for applying a metal element to a
• Metal layer of a film is formed and applied to the security document, preferably in the hot stamping process.
• the object of the invention is to provide a method of the type mentioned, in which the known disadvantages are avoided and in which a high security against counterfeiting can be achieved.
• Stamp element an embossment is applied to the metal element.
• Intaglio printing process can be performed independently of the embossment of the metal element and precautions for registration inaccuracies of the position of the metal element are not required. If a subsequent intaglio printing method is not provided, can be particularly easily embossed by the inventive method
• Metal element can be achieved.
• the registration accuracy of the embossing on the metal element represents an additional security feature, which can be easily checked and has a high security against counterfeiting.
• the invention further relates to a security document with a metal element producible according to a method described above.
• the embossing has an accuracy of less than 25 ⁇ m, in particular less than 10 ⁇ m.
• the invention further relates to a stamp element for an aforementioned method.
• Another object of the invention is to provide a stamp element with which the aforementioned method can be performed easily and quickly.
• the stamp surface is formed as a gravure printing plate.
• Intaglio printing process can be performed independently of the embossment of the metal element and precautions for registration inaccuracies of the position of the metal element are not required.
• Intaglio printing plate made of hard brass and / or a hard brass alloy.
• the stamp can be produced with the required accuracy.
• the invention further relates to a process for the preparation of one described above
• Another object of the invention is to provide a method of the type mentioned above, with which the stamp element is easy and quick to produce. According to the invention, this is achieved by recesses and / or lines being introduced into a stamping surface of hard brass and / or of a hard brass alloy formed as a gravure printing plate with a laser.
• the stamp surface has the required strength, wherein the stability can be increased in particular by a chrome plating.
• fine structures can be introduced into the stamp surface with the laser.
• the accuracy of these structures can be further improved by a post-treatment for removal of melt burrs.
• a further advantage is that the depth of the lines can be selected independently of each other, thereby enabling an increase in the security of security documents produced with the stamp element.
• melt burrs are removed after introduction of the depressions and / or lines. As a result, the accuracy of the lines and / or depressions can be considerably increased, whereby the reproducibility of the stamp element and its resolution can be improved.
• the melt burrs are removed by means of a chemical aftertreatment, in particular an acid bath, an electrolytic bath or the like.
• a chemical aftertreatment the melt burrs can be easily and quickly removed, with targeted only the copper oxide or the zinc oxide of the melt burrs and not the material of the stamp surface is removed.
• the acid bath comprises acetic acid, phosphoric acid and nitric acid, in particular about 40% by volume of acetic acid, 50% by volume of phosphoric acid and 10% by volume of nitric acid.
• acetic acid 50% by volume of phosphoric acid and 10% by volume of nitric acid.
• a reflective and planar surface of the stamp surface can already be achieved with a dip treatment of a few minutes, with further post-treatment steps not being necessary.
• the depth for each of the wells and / or lines and or for a group of wells and / or lines is specified independently.
• an additional security feature can be formed, whereby the security against counterfeiting can be increased with the stamp element produced security documents. Furthermore, it can be ensured in other embodiments of the stamp element according to the invention that all depressions and / or Lines have substantially the same depth, creating a particularly uniform
• FIG. 1 is a plan view of a security document according to the invention.
• Fig. 2 is a side view of a punch element according to the invention.
• FIG. 3 is a plan view of the stamp element of FIG .. 2
• FIG. 1 shows a security document 1 according to the invention with a metal element 2, wherein the metal element 2 has an embossing 21 of exact registration.
• the security document 1 is formed with a plurality of security elements which are intended to facilitate the recognition of a forgery of the security document 1.
• One of these security elements may be the applied metal element 2.
• By register-accurate embossment 21 an additional security feature is formed, which can be easily checked. It is particularly advantageous that position inaccuracies can often be detected very precisely with the naked eye. Therefore, a counterfeit can be recognized by the general public without additional aids with this additional security element.
• embossments 21 are often indicated by a pressure. However, since such a pressure occurs separately from the application of the metal foil, achieving a register accuracy is technically very complicated and almost impossible.
• the tactile embossment 21 can be easily distinguished from a print by keys.
• the embossment 21 tactile is often difficult to detect, the detection of the registration accuracy can be easily detected even with these security documents 1.
• the embossment 21 has an accuracy of less than 25 ⁇ m, in particular less than 10 ⁇ m. These accuracies usually required for bank notes are difficult for counterfeiters to reach, so that the embossing 21 has a high degree of protection against counterfeiting.
• the metal element 2 can be provided with holographic or other diffractive structures, whereby the security of the security document 1 is further increased. These high accuracies can be achieved with intaglio printing, in which very high pressures are used, whereby embossing 21 is formed.
• the security document 1 according to the invention can be produced in a simple manner by the metal element 2 being applied to the security document 1 with a stamp element 3, wherein the metal element 2 is formed from a metal layer of a film. This can be done in particular in the hot stamping process with a stamp element 3 shown in FIGS. 2 and 3, wherein the embossing 21 is applied to the metal element 2 during application of the metal element 2 by means of a stamping surface 32 formed as a stamping surface 31 of the stamping element 3. An additional method step for applying the embossment 21, as provided in the prior art, is not required.
• the embossment 21 may be formed as a blind embossing.
• a carrier film on which a release varnish, a metal layer thereon and an adhesive layer thereon are usually applied is usually used.
• the carrier film is applied as a continuous tape to the security document 1.
• the release lacquer and the adhesive layer is locally melted and transferred by pressure, the metal element 2 on the security document 1.
• the carrier film remains intact in this method, wherein the metal element 2 in the form of the stamp surface 31 is applied to the security document from the metal layer.
• the stamp element 3 for the production of the security document 1 has a stamp face 31 designed as a gravure printing plate 32.
• an embossing 21 can be achieved with an accuracy described above, if the intaglio printing plate 32 is in a preferred embodiment of hard brass and / or a hard brass alloy.
• depressions and / or lines can be introduced into the stamp face 31 made of hard brass and / or of a hard brass alloy formed as a gravure printing plate 32 with a laser.
• the hard brass and / or the hard brass alloy has a Vickers hardness greater than 140.
• a Festkö ⁇ er basic model laser preferably a diode-pumped Nd: YAG laser can be used. Due to its beam profile, the laser beam penetrates into the material surface in a cone shape. Smelting processes are created in the edge area of the focused beam, which solidify part of the material into unwanted ejections and splashes. The type and size of the edge ejection depend on the material, the pulse power and the engraving depth. With the laser metals, ceramics and some plastics can be engraved, whereby the power density of the laser beam is so high that the material partially evaporates during processing within a few nanoseconds, in the material creates a colorless recess - the engraving. Often formed by the interaction of the melted base material with the atmospheric oxygen oxides, which can be due to their color, the engraving stand out more clearly.
• melt burrs resulting from the introduction of the pits and / or lines into the intaglio printing plate 32 are removed.
• These melt burrs consist essentially of oxidized material of intaglio printing plate 32, in particular copper oxide or zinc oxide.
• a chemical aftertreatment appears to be particularly suitable, which may in particular comprise an acid bath, an electrolytic bath or the like. It can be ensured that the copper oxide or the zinc oxide, but not the hard brass and / or the hard brass alloy of intaglio printing plate 32 is removed by the chemical aftertreatment.
• the chemical aftertreatment can be carried out in particular by immersion of the intaglio printing plate 32 in an acid bath or the like, which comprises phosphoric acid, acetic acid, nitric acid, arsenic acid or the like, or a combination of these acids.
• an acid bath which comprises acetic acid, phosphoric acid and nitric acid, wherein the acid bath may in particular about 40% by volume of acetic acid, 50% by volume of phosphoric acid and 10% by volume of nitric acid.
• a retouching and / or inspection of the intaglio printing plate 32 can furthermore be provided in order to be able to recognize and correct any defects that may be present.
• the depth of the depressions and / or lines is further increased specified. This can be done for each well and / or line individually or collectively for a group of wells and / or lines.
• the specifications of the individual depths are independent of each other. Different depths can be achieved in the inventive method in a simple manner by a power control of the laser beam or by repeated Belasern.

Landscapes

• Business, Economics & Management (AREA)
• Accounting & Taxation (AREA)
• Finance (AREA)
• Printing Plates And Materials Therefor (AREA)
• Printing Methods (AREA)
• Physical Vapour Deposition (AREA)
• Semiconductor Integrated Circuits (AREA)
• Credit Cards Or The Like (AREA)
• Adornments (AREA)
• Shaping Metal By Deep-Drawing, Or The Like (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

Family

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Family Applications (1)

Country Status (12)

Families Citing this family (3)

Family Cites Families (13)

• 2005
  • 2005-01-17 AT AT0006305A patent/AT501319B1/de not_active IP Right Cessation
• 2006
  • 2006-01-16 JP JP2007550630A patent/JP2008526566A/ja active Pending
  • 2006-01-16 PL PL06701002T patent/PL1866164T3/pl unknown
  • 2006-01-16 RU RU2007131269/12A patent/RU2388612C2/ru not_active IP Right Cessation
  • 2006-01-16 EP EP06701002A patent/EP1866164B1/fr not_active Expired - Lifetime
  • 2006-01-16 DE DE502006008078T patent/DE502006008078D1/de not_active Expired - Lifetime
  • 2006-01-16 AT AT06701002T patent/ATE484397T1/de not_active IP Right Cessation
  • 2006-01-16 AU AU2006206027A patent/AU2006206027B2/en not_active Ceased
  • 2006-01-16 US US11/814,048 patent/US20100045023A1/en not_active Abandoned
  • 2006-01-16 WO PCT/AT2006/000017 patent/WO2006074496A1/fr not_active Ceased
  • 2006-01-16 CA CA002595623A patent/CA2595623A1/fr not_active Abandoned
• 2007
  • 2007-07-20 ZA ZA200706008A patent/ZA200706008B/xx unknown
  • 2007-07-26 MA MA30114A patent/MA29367B1/fr unknown

Non-Patent Citations (1)

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