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
  • B42D25/342—Moiré 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
  • 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
• • 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
  • G07D7/20—Testing patterns thereon
  • G07D7/202—Testing patterns thereon using pattern matching
  • G07D7/207—Matching patterns that are created by the interaction of two or more layers, e.g. moiré patterns
• • B42D2035/14—
• • B42D2035/16—

Definitions

• the invention relates to an article with a surface area which generates an optical effect in order to increase the security against forgery.
• the forgery-proof packaging is of great importance especially for the pharmaceutical industry. In principle, however, there is also a desire in other areas for forgery-proof packaging or products, in particular in the consumer goods industry, for example in the packaging of foods, cosmetic articles, clothing, software and music CDs or securities.
• the article having the optical effect-generating surface region may be a packaging, a packaging material, a packaging aid or a product itself, on which a surface area in the form of a security part, for example as a label, is provided with an optical effect.
• a tamper evident packaging or packaging aid may serve as a tamper evidence guarantee that allows the customer to recognize that the product he has purchased has actually been manufactured and packaged by the desired producer.
• a tamper-resistant packaging aid can also be used, among other things, as a first-opening guarantee, for example in the form of a label, a banderole or a sealing strip, etc., for example over a bottle cap or over the closure of a wide-necked glass, over the seam between a lid and a container or over the zipper of a bag.
• the label, the banderole or the sealing strip is destroyed, indicating that an initial opening has already taken place. It is also possible;
• To fill or wrap objects in an outer packaging with the outer packaging has characteristic distinctive and non-duplicable features which show that the packaging of the contents has been done at a particular supplier.
• Known anti-counterfeiting packaging and products are provided with holograms on their surface or have color codings or invisible features.
• Holograms proven. Examples are hologram labels or lidding films with integrated holograms. The production of individualized holograms is, however, associated with an enormous effort.
• the US-A-4,662,653 discloses an article having a surface area comprising a transparent layer of material having an image pattern which is bounded on one side by a specular layer.
• the mirror image of the image pattern forms a second image pattern, the distance between these image patterns being determined by the thickness of the material layer.
• the distances between the individual pixels or between the image pattern and the reflection layer are dimensioned so that the visual appearance is based on a light diffraction.
• US-A-4,632,430 discloses articles having a surface area producing an optical effect wherein two image patterns are spaced apart by a transparent layer of material and the optical perception of the overall image produced by the superposition of the image patterns changes as the viewing angle changes. This effect, which results only in translucent light, is based on a simple overlay of the shadow areas of the two image patterns.
• One from the EP-A-0 348 583 known object includes a base surface with a line pattern.
• a transparent film is with a second line pattern Mistake.
• the transparent film having the second line pattern is partially fixed to the base surface, so that the distance between the base surface and the transparent film varies with different degrees of movement of the object. Under certain distance conditions, a kind of "dynamic" moire pattern results for the viewer.
• WO-A-98/15418 For example, there is known a paper which, when folded, has a surface area with an optical effect due to moiré interference.
• the two image patterns are each applied to a transparent film, the two image patterns have no fixed distance from each other, but one image pattern is arranged detached from the other. The optical effect therefore only occurs when the two image patterns are placed on each other during the folding of the paper.
• the two image patterns are not kept at a fixed distance from each other, but arranged separately from each other.
• the EP-A-1 089 883 discloses an article having a surface area producing an optical effect to increase anti-counterfeiting security, wherein the surface area having the optical effect has at least two image patterns spaced by a transparent layer of material, and the optical perception of the overall image created by the superposition of the image patterns is changed as the viewing angle changes wherein the distance between the image patterns defined by a thickness of the transparent material layer and the distance between adjacent The image patterns underlying the image patterns are coordinated so that the image patterns show moire interference.
• the invention is based on the object of equipping at least a part of the surface of objects such as packaging, packaging materials, packaging aids or products themselves with an optical effect not recognizable in the visible light as a security feature against counterfeiting.
• an image pattern in the form of a first grid with additional information that will be visible only after decoding with a second grid contains, the dimensions of first raster and the dimensions of the second raster are coordinated so that the two rasters show moire interference, wherein the second raster is arranged on a test film intended to be placed on the surface area with the optical effect, and wherein the image pattern with the additional Information containing first grid and the second grid are only visible in UV light color print pattern.
• Preferred raster elements are lines, grids, polygons, in particular 3-, 4- and 6-cornered polygons as well as round and oval points.
• the second raster is a uniform line pattern and the first raster of the first image pattern is a pattern matched to the uniform line pattern of the second raster.
• the first image pattern may be printed on the surface of a sheet-like material.
• the film-shaped material may, for. Example, an opaque film, in particular an aluminum foil, and the test film is a transparent plastic film, or vice versa, or the film-shaped material and the test film are both transparent plastic films.
• the image patterns may, for example, consist of individual parallel lines, be punctiform or contain a combination of straight and curved lines or other grids.
• the second raster on the test film also called “lens”
• the first raster of the image pattern applied to the surface of the article is matched to the second raster , by patterning additional information contained in the lines pattern.
• the coding arises from the fact that a shift of the picture elements is carried out at points which are supposed to stand out in contrast during the detection. It can thus z.
• brand names and the like Sign brand names and the like. Signs that are visible only after placing the test film in UV light, are installed in the packaging material.
• the amount of displacement of the picture elements can be optionally controlled so that contrast intermediate values are achieved, ie, for. B. also a sound stage image can be generated.
• the moiré effect can also be achieved with lenticular lenses.
• the lenticular lens makes parts of the first image pattern hidden, so that either only the unchanged or the changed areas are seen.
• the effect is the same in itself.
• the groove spacing of the lenticular lenses must be matched to the line frequency of the first image pattern.
• the screens may also contain a combination of straight and curved lines or other picture elements.
• a preferred field of application of the inventive article are packaging materials, such. As cover sheets of blister packs, but also cartons, glass bottles and bags for medicines.

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• Engineering & Computer Science (AREA)
• Computer Vision & Pattern Recognition (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Wrappers (AREA)

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Applications Claiming Priority (1)

Publications (1)

Family

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Family Applications (1)

Country Status (1)

Citations (4)

• 2007
  • 2007-06-25 EP EP07405181A patent/EP2008834A1/fr not_active Withdrawn

Patent Citations (4)

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