Classifications

• • G—PHYSICS
  • G07—CHECKING-DEVICES
  • G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
  • G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
  • G07D7/003—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using security elements

Definitions

• the invention relates to copy-protected packaging or security films.
• Packaging and security films can usually be forged very easily by simple copying with color copiers or by scanning.
• the copy protection consists of a random noise that can be applied by printing on the packaging or security film.
• the object of the present invention was to provide an improved copy protection for packaging or security films, which may also allow defined assignments.
• the invention therefore relates to packaging, packaging films or security films, characterized in that they have an individualized copy protection in the form of an individualized noise and individualized patterns are applied to the front and back of the packaging or security film in the register.
• carrier foils are preferably flexible plastic foils, for example, PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in question.
• the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 5 to 200 .mu.m, particularly preferably 5 to 50 .mu.m.
• metal foils for example Al, Cu, Sn, Ni, Fe or stainless steel foils having a thickness of 5-200 ⁇ m, preferably 5 to 80 ⁇ m, particularly preferably 10 to 50 ⁇ m, may serve as carrier substrate.
• the slides can also be surface-treated, coated or laminated, for example with plastics or painted.
• metal foils such as aluminum foils or transparent plastic foils.
• the security feature can be realized on the carrier substrate by means of a conventional printing method. If a digital printing method is used, the security element can also be individualized.
• the security element can also be integrated in pictures, graphics, barcodes, logos, etc. and thus hidden.
• Noise is generally understood to mean a disturbance variable with a wide non-specific frequency spectrum.
• Noise processes with a constant spectral noise power density in the broader sense are called white noise in analogy to the white light, which includes all spectra (frequencies) of the visible light with the same power (intensity).
• Pink Noise refers to noise with a spectral noise power density that is inversely proportional to the frequency (1 / f noise).
• Red or brown noise refers to noise processes with a spectral noise power density falling inversely proportional to the square of the frequency (1 / f 2 noise).
• the verification can, as well as in WO 03/098540 described, done automatically and automatically by standard readers.
• the object of the invention was also to provide a method for producing the security element in digital printing.
• This reinforcement may be desired in some applications, e.g. The readability of small fonts is improved, however, in the faithful reproduction of security elements of this effect is not desired, since an absolutely faithful 1: 1 reproduction is required.
• the EPS data format used for processing does not allow many features to be used to create security features such as transparencies, blended modes in partial opaque and transparent states. Spot colors can only be applied in full tone (100%) mode.
• the security films according to the invention can be used as security elements in data carriers, in particular value documents, such as identity cards, cards, bank notes, as components and decorative elements in architecture and in other technical fields, and as packaging materials in the pharmaceutical or food industry.

Landscapes

• Engineering & Computer Science (AREA)
• Computer Security & Cryptography (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Printing Methods (AREA)

Priority Applications (1)

Applications Claiming Priority (1)

Publications (1)

Family

ID=38346732

Family Applications (1)

Country Status (1)

Cited By (24)

Citations (4)

• 2007
  • 2007-03-03 EP EP07004398A patent/EP1968020A1/fr not_active Withdrawn

Patent Citations (4)

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