WO2017108035A1 - Article imprimé, procédé d'authentification d'un article imprimé et système d'articles - Google Patents
Article imprimé, procédé d'authentification d'un article imprimé et système d'articles Download PDFInfo
- Publication number
- WO2017108035A1 WO2017108035A1 PCT/DE2016/100613 DE2016100613W WO2017108035A1 WO 2017108035 A1 WO2017108035 A1 WO 2017108035A1 DE 2016100613 W DE2016100613 W DE 2016100613W WO 2017108035 A1 WO2017108035 A1 WO 2017108035A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- grid
- printing
- test
- article
- printed
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000012360 testing method Methods 0.000 claims description 79
- 230000002889 sympathetic effect Effects 0.000 claims description 2
- 239000000123 paper Substances 0.000 description 6
- 239000004033 plastic Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012634 optical imaging Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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
- B42D25/20—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
-
- 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
- G07D7/06—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 wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/128—Viewing devices
-
- 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
Definitions
- the invention relates to a printed article, a method for checking the authenticity of a printed article and an article system.
- raster When printing an article, be it for example a paper document or a passport document in the form of a plastic card, screening technology can be used.
- the term raster generally designates a regular system of intersecting lines (raster lines) which extend over a region to be printed and along which raster points are arranged as printed elements.
- raster systems are used to reproduce, for example, halftone images.
- a printing grid is printed on the surface to be printed.
- the grid points encompassed by the print grid are arranged along the grid lines.
- the halftone dots may have different dot shapes, such as round or square dot faces.
- the grid width or grid frequency is the number of grid points per unit length. The smaller the dot pitch between adjacent halftone dots, the larger the screen frequency.
- amplitude-modulated and frequency-modulated grids A distinction is made between amplitude-modulated and frequency-modulated grids.
- the halftone dots In the case of amplitude-modulated printing screens, the halftone dots always have the same distances from one another. The grid points themselves can be different sizes or the same size.
- the uniformity of the dot distribution is absent.
- the halftone dots are arranged according to a random distribution, which results in a random distribution of the dot spacings between adjacent halftone dots.
- Document GB 1,138,011 A discloses printing patterns with dots, for example banknotes. In one embodiment, halftone dots are arranged on closed circular arcs.
- the document EP 1 127 712 A1 discloses a security and / or value document, in particular a banknote, with security features and with a verification element for verifying the security feature.
- Document DE 699 17 947 T2 relates to a method and apparatus for authenticating documents by applying the intensity profile of Moire patterns.
- the object of the invention is to provide improved technologies in connection with the forgery-proof design of printed articles using the halftone printing technique.
- the authenticity of the printed article should be easily verifiable.
- a printed article is provided according to the independent claim 1.
- a method for checking the authenticity of a printed article according to independent claim 9 and an article system according to independent claim 10 are provided.
- Alternative embodiments are the subject of dependent subclaims.
- a printed article having a viewing surface and a printing surface disposed in the region of the viewing surface.
- the printing surface is printed with a printing grid, in which grid points are arranged with constant grid spacing along grid lines.
- the grid lines are each executed as a circular arc.
- a method for checking the authenticity of a printed article is provided.
- a printed article is provided as a test object, wherein the printed article has a printing surface in the region of a visible surface, which is printed with a printing grid in which halftone dots each having the same dot spacing are arranged along grid lines, each one circular arc are.
- a test means is provided in the method.
- the test equipment has a transparent test surface with a test printing grid printed thereon, in which screen dots with the same screen pitch as the screen dots of the print screen are arranged on the test piece.
- the test equipment is placed on the test specimen in such a way that the test specimen's printing grid and the test printing grid of the test specimen overlap.
- the printing grid of the test piece and the test pressure grid of the test equipment are shifted relative to one another, for example rotated, until the moire image becomes visible for the printing screen and the test printing screen.
- an article system adapted for authenticity testing of the aforesaid kind.
- the article system has a printed article as well as a test device.
- a printing surface is arranged in the region of a visible surface and printed with a printing grid in which halftone dots with in each case constant dot or element spacing are arranged along grid lines, which are each a circular arc.
- the test equipment has a transparent test surface with a test print grid printed thereon, in which screen dots with the same screen pitch as the screen dots of the print screen are arranged on the printed article.
- the grid points of the print grid can be formed the same or different in terms of their dot shape.
- the dot shape can be round or angular.
- a circular shape or a quadrangular shape may be provided.
- the printing grid can be produced as a monochrome or as a multicolored printing grid.
- the printing surface may partially or completely cover the visible surface of the printed article.
- a plurality of separately formed pressure surfaces can be provided, which are each printed with a printing grid, wherein the pressure grid of the separate printing surfaces can be identical or different.
- the print patterns in different print areas may differ in the dot pitch along the circular arc grid lines.
- the size of the screen dots may be different in the different printing surfaces.
- the test equipment can have a plurality of test pressure rasters which are formed with different raster widths, the raster widths corresponding to the raster widths of the plurality of print rasters.
- the test equipment with several horribilrastern different screen ruling can be provided regardless of whether the printed article has multiple printing grid. In this way, a usable for various printed items test equipment can be provided.
- the printed article may be for example a printed document, for example a security document such as a passport or a passport, in particular made of paper or in the form of a plastic card.
- a security document such as a passport or a passport
- it can be a paper document, for example a certificate or a certificate.
- the printed document made of materials other than paper, such as a plastic film or a cardboard material.
- the printing surface can be arranged with the pressure grid arranged thereon.
- the print grid can be printed on a sheet, which is then applied later on the article, for example by means of gluing, which thereby becomes the printed article, ie an article on which the Druckffphie is arranged with printing grid.
- the grid lines of the print grid can extend along a circular arc, such that the grid lines and thus also the grid points arranged along the grid line are not arranged on a closed circle.
- the circular arc in the printing grid is not part of a set of multiple circular arcs that together form a (closed) circle in the printing grid.
- the grid points form the elements of the print grid (grid elements) of any size and shape.
- the halftone dots can have the same halftone dot size. For example, it may be circular or square grid points of the same size.
- the grid point or grid size may change along the grid line.
- the grid dot size may increase steadily or continuously along the grid line.
- the changing halftone dot size can be provided for individual or all grid lines of the print shaver.
- the print screen of the article may have a screen ruling in the range of about 100 lpi to about 700 lpi.
- the screen ruling corresponds to 100 to 700 lines per inch (lpi).
- the printing grid can be printed by means of a sympathetic printing ink.
- it may be an ink that is visible only when illuminated with UV light.
- a tangent to a first point of the arc and a tangent to a second point of the arc may include an angle in the range of about 3 degrees to about 15 degrees, preferably in a range of about 5 degrees to about 10 degrees, the second point of the circular arc along the tangent to the first point has a distance in the range of about 10 cm to about 22 cm from the first point of the circular arc. Alternatively, the distance may be in the range of about 15 cm to about 22 cm.
- the print screen can be an amplitude-modulated print screen.
- the circular arcs of the print grid can all have the same curvature. Alternatively, it can be provided that the circular arcs of the print grid have differing curvatures. point. For example, a continuous or continuously increasing curvature of the grid lines can be provided via the distribution of the grid lines of the print grid.
- the grid points can be arranged along straight grid lines.
- the grid points may be arranged along curved lines, the curvature of which differs from that of the grid lines of the printed grid to be tested; in particular, another circular arc radius may be provided.
- an alternative embodiment can provide that a printed article is provided as a test object, the printed article having in the region of a viewing surface a printing surface which is printed with a printing raster along the raster points with a constant dot spacing in each case are arranged by grid lines, which are each a non-straight line, in particular a curved line. Furthermore, a test means is provided in the method.
- the test equipment has a transparent test surface with a test printing grid printed thereon, in which raster points along raster lines, in particular straight raster lines, are arranged with the same raster width as the raster points of the print raster on the test object.
- the test equipment is placed on the test specimen in such a way that the print grid of the specimen and the test pressure grid of the test equipment overlap.
- the printing grid of the test piece and the test pressure grid of the test equipment are shifted relative to one another, for example twisted, until a characteristic moiré image is visible for the printing grid and the test printing grid.
- the characteristic moiré image is also at least different in this case from a resulting moiré image when overlapping printed rasters with straight raster lines each.
- the moiré image which is produced when the test specimen and test equipment are placed on top of each other, can be visible to the naked eye.
- AI can be provided to carry out the authenticity check with the aid of an optical imaging system, for example a camera system with which an image is generated on a screen in order to make the emergence of the moiri image detectable.
- the test print screen may be printed on a transparent substrate, for example a clear plastic film.
- FIG. 1 is a schematic representation of a visible surface of a printed article
- FIG. 2 shows a region of a print raster on the visible surface of the printed article from FIG. 1
- FIG. 3 shows a schematic representation of a detail of a test pressure raster of an inspection medium
- FIG. 4 shows a schematic representation for explaining a curvature of a raster line
- FIG. 5 shows a schematic representation of a test object and a test device.
- the printed article 1 shows a schematic representation of a printed article 1, in particular a printed document, in which a printing surface 3 is arranged in the region of a visible surface 2.
- a printing screen 4 is printed on the material of the printed article 1, for example paper or plastic.
- the printing grid 4 can be formed in one or more colors.
- the printed article 1 may be a security document such as a passport or a passport.
- the badge may for example be designed as a plastic or plastic card, optionally as a smart card.
- the printed article 1 may be a paper document, such as a certificate or a certificate.
- the printing surface 3 may be arranged with the pressure grid 4 arranged thereon.
- the printing grid 4 can be printed on a sheet, which is then applied later on the article, for example by means of Sticking, which thereby becomes the printed article, ie an article on which the printing surface 3 is arranged with printing grid 4.
- the printing screen 4 has screen dots or elements 5, which are formed in the illustration shown with a circular shape.
- the grid points 5 are arranged along grid lines 6 with constant dot spacing.
- the grid lines 6 are each a circular arc.
- the screen dots 5 all have the same dot size.
- FIG. 3 shows a schematic representation of a test pressure grid 10 with grid points 11, which are arranged with constant grid dot spacing or dot spacing along straight grid lines 12.
- the raster width or raster frequency is the same for the raster points 5 in the printing raster 4 and the raster points 11 in the test printing raster 10.
- the sketchffyraster 10 is printed on a substrate material which is transparent or transparent in intermediate areas 13.
- the fürraster 10 can be used to perform an authenticity check for the printed article 1 by the fürraster 10 is placed as part of a test means, such as a handbow or a card on the print grid 4.
- the test printing grid 10 may be printed, for example, on a transparent film which is part of the test device.
- the printing grid 4 and the scholarraster 10 can be superimposed when checking relative to each other so that a moiré image for the two rasters, which shows curved line structures, resulting in the combination of the print grid 4 with the circular arc grid lines 6 on the one hand and the scholardruckrasters 11 with the straight grid lines, the two rasters are formed in the embodiment shown with the same screen width.
- the authenticity of the printed article 1 can be determined in a simple manner with the aid of the test device on the basis of the characteristic Moire image. It can be checked whether in the printed article 1, the printing grid 4 is actually formed with the curved grid lines 6. In this case, the grid lines 6 of the printing grid 4 have a rather small curvature, which for a less attentive viewer may not be recognizable to the naked eye.
- FIG. 4 shows a schematic illustration for explaining the curvature of a raster line 20 of the raster lines 6 embodied as a circular arc in the printing raster 4.
- a section of the raster line 20 in a first point or element 21 and a second point or element 22 the respective tangent 23, 24 created.
- the tangents 23, 24 enclose an angle ⁇ which is in a range of about 5 degrees to about 10 degrees.
- the first and second points 21, 22 have a distance s along the tangent 23 to the first point 21. This distance is, for example, about 10 cm to about 22 cm, alternatively about 15 cm to about 22 cm.
- Fig. 5 shows a schematic representation of an embodiment of a test specimen forming print grid 4, which is arranged on an article.
- the printing grid 4 is formed with grid points along circular arc-shaped grid lines.
- a comparison printing pattern 50 is shown in which the screen dots are arranged along straight raster lines.
- a scholarraster 10 is shown, on which the grid points along straight grid lines are arranged.
- the educaticianraster 10 is printed on a transparent film.
- the screens have a screen width of 70 lpcm (lpcm - lines per cm).
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Business, Economics & Management (AREA)
- Accounting & Taxation (AREA)
- Finance (AREA)
- Engineering & Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Printing Methods (AREA)
Abstract
L'invention concerne un article imprimé (1) ayant une surface visible (2) et une surface d'impression (3) qui est disposée dans la zone de la surface visible (2). La surface d'impression (3) est imprimée avec une trame d'impression (4) dans laquelle des points de trame (5) sont disposés avec un pas constant le long de lignes de trame (6) qui sont chacune un arc de cercle. L'invention comprend en outre un procédé d'authentification d'un article imprimé et un système d'articles.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16831813.7A EP3393819B1 (fr) | 2015-12-23 | 2016-12-22 | Article imprimé, procédé de vérification de l'authenticité d'un article imrimé et système d'articles |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015122798.3A DE102015122798A1 (de) | 2015-12-23 | 2015-12-23 | Bedruckter Artikel, Verfahren zur Echtheitsprüfung eines bedruckten Artikels und Artikelsystem |
DE102015122798.3 | 2015-12-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017108035A1 true WO2017108035A1 (fr) | 2017-06-29 |
Family
ID=57944232
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2016/100613 WO2017108035A1 (fr) | 2015-12-23 | 2016-12-22 | Article imprimé, procédé d'authentification d'un article imprimé et système d'articles |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3393819B1 (fr) |
DE (1) | DE102015122798A1 (fr) |
WO (1) | WO2017108035A1 (fr) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1138011A (en) | 1965-07-06 | 1968-12-27 | Canadian Bank Note Co Ltd | Improvements in printed matter for the purpose of rendering counterfeiting more difficult |
EP0279526A2 (fr) | 1987-02-18 | 1988-08-24 | CarnaudMetalbox plc | Document de sécurité |
WO1995004665A1 (fr) * | 1993-08-10 | 1995-02-16 | Hardy Business Forms Limited | Donnees imprimees incrustees, procede et appareil afferents |
EP1127712A1 (fr) | 1997-07-04 | 2001-08-29 | BUNDESDRUCKEREI GmbH | Document de valeur ou de sécurité |
WO2002101669A2 (fr) * | 2001-06-11 | 2002-12-19 | Ecole Polytechnique Federale De Lausanne (Epfl) | Authentification de documents et d'articles de valeur par l'utilisation de profils d'intensite a moire |
FR2830791A1 (fr) * | 2001-10-15 | 2003-04-18 | Finega | Nouveau support identifiable |
DE69917947T2 (de) | 1999-11-29 | 2005-07-21 | Ecole polytechnique fédérale de Lausanne (EPFL) | Neue verfahren und vorrichtung zum authentifizieren von dokumenten durch anwendung des intensitätsprofils von moiremuster |
WO2013057279A1 (fr) * | 2011-10-19 | 2013-04-25 | Bundesdruckerei Gmbh | Procédé de vérification d'un document de sécurité pourvu d'un modèle à l'aide d'un dispositif d'affichage |
-
2015
- 2015-12-23 DE DE102015122798.3A patent/DE102015122798A1/de not_active Withdrawn
-
2016
- 2016-12-22 WO PCT/DE2016/100613 patent/WO2017108035A1/fr unknown
- 2016-12-22 EP EP16831813.7A patent/EP3393819B1/fr active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1138011A (en) | 1965-07-06 | 1968-12-27 | Canadian Bank Note Co Ltd | Improvements in printed matter for the purpose of rendering counterfeiting more difficult |
EP0279526A2 (fr) | 1987-02-18 | 1988-08-24 | CarnaudMetalbox plc | Document de sécurité |
WO1995004665A1 (fr) * | 1993-08-10 | 1995-02-16 | Hardy Business Forms Limited | Donnees imprimees incrustees, procede et appareil afferents |
EP1127712A1 (fr) | 1997-07-04 | 2001-08-29 | BUNDESDRUCKEREI GmbH | Document de valeur ou de sécurité |
DE69917947T2 (de) | 1999-11-29 | 2005-07-21 | Ecole polytechnique fédérale de Lausanne (EPFL) | Neue verfahren und vorrichtung zum authentifizieren von dokumenten durch anwendung des intensitätsprofils von moiremuster |
WO2002101669A2 (fr) * | 2001-06-11 | 2002-12-19 | Ecole Polytechnique Federale De Lausanne (Epfl) | Authentification de documents et d'articles de valeur par l'utilisation de profils d'intensite a moire |
FR2830791A1 (fr) * | 2001-10-15 | 2003-04-18 | Finega | Nouveau support identifiable |
WO2013057279A1 (fr) * | 2011-10-19 | 2013-04-25 | Bundesdruckerei Gmbh | Procédé de vérification d'un document de sécurité pourvu d'un modèle à l'aide d'un dispositif d'affichage |
Also Published As
Publication number | Publication date |
---|---|
DE102015122798A1 (de) | 2017-06-29 |
EP3393819B1 (fr) | 2022-08-10 |
EP3393819A1 (fr) | 2018-10-31 |
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