EP3326833B1 - Screen printing of effect colours on valuable documents - Google Patents

Screen printing of effect colours on valuable documents Download PDF

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Publication number
EP3326833B1
EP3326833B1 EP17001930.1A EP17001930A EP3326833B1 EP 3326833 B1 EP3326833 B1 EP 3326833B1 EP 17001930 A EP17001930 A EP 17001930A EP 3326833 B1 EP3326833 B1 EP 3326833B1
Authority
EP
European Patent Office
Prior art keywords
substrate
paper
smoothing
screen printing
region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17001930.1A
Other languages
German (de)
French (fr)
Other versions
EP3326833A1 (en
Inventor
Max Voit
Yana Kisselova-Weckerle
Daniela Otto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Giesecke and Devrient Currency Technology GmbH
Original Assignee
Giesecke and Devrient Currency Technology GmbH
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Filing date
Publication date
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Publication of EP3326833A1 publication Critical patent/EP3326833A1/en
Application granted granted Critical
Publication of EP3326833B1 publication Critical patent/EP3326833B1/en
Active legal-status Critical Current
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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
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/24—Passports
    • 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
    • B42D25/23—Identity cards
    • 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
    • B42D25/324—Reliefs
    • 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
    • B42D25/369—Magnetised or magnetisable 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
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/373—Metallic 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
    • B42D25/30—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
    • 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
    • B42D25/40—Manufacture
    • B42D25/405—Marking
    • B42D25/425—Marking by deformation, e.g. embossing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/36—Coatings with pigments
    • D21H19/38—Coatings with pigments characterised by the pigments
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/28—Colorants ; Pigments or opacifying agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper
    • D21H21/42—Ribbons or strips
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/005—Mechanical treatment
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender

Definitions

  • the invention relates to a method for applying an optically variable security element to an upper side of a substrate of a value document, wherein the upper side of the substrate consists of paper.
  • the optically variable security element consists of a color with optically variable pigments, which is printed on a first area of the upper side of the paper substrate.
  • value documents such as banknotes or cards
  • optically variable security elements To protect against imitation or counterfeiting, especially with color copiers or other reproduction methods, value documents, such as banknotes or cards, are equipped with optically variable security elements.
  • the protection against counterfeiting is based on the fact that the visually and simply and clearly recognizable optically variable effect can not or only insufficiently be reproduced by the abovementioned reproduction devices.
  • Such optically variable security elements are, for example, effect colors in which a color is mixed with pigments in the form of thin-film elements, wherein the thin-film elements consist of a reflector layer, a dielectric and an absorber layer. If the security element is viewed from the absorber side, the viewer perceives a certain color, which changes as the viewing angle changes.
  • Such pigment-like thin-film elements which are admixed with an ink are, for example, made EP 0 227 423 B1 known.
  • Printing inks with magnetically orientable optically variable interference pigments are for example made EP 1880 866 A1 known.
  • a smoother surface of a paper substrate can be formed by calendering or satinization, but also by printing a primer under the effect color area.
  • calendering or satinization of a paper the paper web is guided during papermaking in a so-called calender, which can be designed as a roll calender or as a stamping calender.
  • the paper web is passed between superimposed rolls mechanically under pressure, friction and heat, so that the paper receives its final surface texture, in particular its gloss and its smoothness.
  • the paper web is acted upon by means of a stamping die with mechanical pressure and optionally additionally embossed.
  • Calendering takes place automatically in intaglio printing, but the printing sequence is already defined, namely first gravure printing and then screen printing. If, however, gravure printing is applied by means of screen printing over or after screen printing, this variant of calendering can not be selected by intaglio printing. In this case, a primer is usually applied by screen printing in the first printing step, which leads to a smooth surface on the paper and which is then overprinted with the effect color.
  • a primer is usually applied by screen printing in the first printing step, which leads to a smooth surface on the paper and which is then overprinted with the effect color.
  • the invention is therefore the object of developing a generic security element such that the disadvantages of the prior art are eliminated and the protection against counterfeiting is further increased.
  • a smoothing of a second region of the upper side of the substrate made of paper wherein the second region with the smoothing and the first region with the color with optically variable pigments at least partially overlap.
  • the color with optically variable pigments has a different appearance for a viewer in the area of the overlap than outside the overlap.
  • the color for a viewer in the area of the overlap shows a glossy surface and, outside the overlap, a matt surface.
  • the different appearance of the color to a viewer in the area of the overlap and outside of the overlap results from the fact that the optically variable pigments have a different orientation or are oriented differently on a smooth surface than on a rough surface.
  • optically variable pigments are all pigments whose visual appearance changes with tilting. For example, changes in tilting their color, moves apparently a bar from one side of the pigment or the color to another side, are shown in tilting the pigment or the color different characters or results in a so-called pumping effect in the form of an enlarging or downsizing outline of a picture motif.
  • Such pigments may be, for example, the above-mentioned thin-film elements or magnetically orientable, optically variable interference pigments.
  • it may also be metallic or metallic acting pigments, for example, show a silver color and their gloss or reflectivity changes when tilted.
  • the color is printed with optically variable pigments in the screen printing process on the first region of the top of the paper substrate.
  • any printing method which is suitable for printing a color with optically variable pigments is suitable for carrying out the method according to the invention; in the screen printing method, however, the optically variable pigments are printed particularly gently, i. without or least possible mechanical damage.
  • the inventive method a higher print quality of the screen printing, especially when the screen printing is done before the intaglio.
  • the smoothing takes place either during the production of the substrate in a paper machine or after the production of the substrate during a refinement of the surface of the paper.
  • the smoothing takes place via a polishing roller, a calender roller, a milling or a punch.
  • a polishing roller here polishes the surface of the substrate, so that the surface is smoothed in this area.
  • a calender roll as well as a die compresses and smoothes the surface of the substrate, with a calender roll having the advantage over a die that it is more universally applicable, can be used independently of design, and can be easily placed in register with the substrate.
  • a smoothing by means of a milling of the surface of the substrate is possible, wherein the surface of the substrate, for example, removed mechanically with a milling head or with a laser and thereby the thickness of the substrate is reduced.
  • a so-called patrix can be clamped on a stable cylinder.
  • the patrix has raised areas according to the pattern to be worked out by the smoothing.
  • the paper web is guided over the cylinder with male part.
  • the rotating tool is placed precisely on the side of the paper web opposite the male part to the paper web running over the patrice cylinder. If the tool touches only the paper surface, the surface is smoothed by the so-called rolling or polishing by friction without material removal. If the feed device is equipped with a suitable tool and if the feed device is guided further into the paper substrate, material is removed by milling. Because of the engagement suitable patrices can be produced in this way particularly preferably patterned smooth and glossy areas.
  • the smoothed and / or milled surface can be designed as a design element.
  • the outline of the smoothed and / or milled surface information preferably has a width of 1.5 cm to 5 cm.
  • a smoothing according to the invention is usually no longer visible since it is covered by the subsequent printing steps. Furthermore, no impairment of the hue of the color applied to the smoothed area according to the invention is to be expected.
  • the smoothing of the substrate in the areas which are provided for a subsequent screen printing is carried out over the entire surface, for example with a width of 1.5 cm to 5 cm. This results in a particularly advantageous increased color adhesion and improved flatness of the substrate.
  • the substrate is particularly preferably made of paper made of cotton fibers, as used for example for banknotes, or of other natural fibers or of synthetic fibers or of a mixture of natural and synthetic fibers, or of at least one plastic film. Further preferably, the substrate consists of a combination of at least two superimposed and interconnected different substrates, a so-called hybrid. In this case, the substrate consists for example of a combination of plastic film-paper-plastic film, ie a paper substrate is on each of its two sides covered by a plastic film, or a combination of paper-plastic film paper, ie a substrate made of a plastic film is covered on each side by paper.
  • the font DE 102 43 653 A9 in particular states that the paper layer usually has a weight of 50 g / m 2 to 100 g / m 2 , preferably from 80 g / m 2 to 90 g / m 2 . Of course, depending on the application, any other suitable weight can be used.
  • Documents of value in which such a substrate or security paper can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are subject to counterfeiting, such as passports and other identity documents, as well as cards, such as credit cards. or debit cards whose card body has at least one layer of security paper, and also product securing elements such as labels, seals, packages and the like.
  • the simplified term value document includes all the above materials, documents and product safeguards.
  • top surface of the substrate or value document is a relative term that refers to both the front side or rear side as well as "the one" and “the opposite" side, which constitute the overwhelming portion of the overall surface of the substrate or document of value.
  • the side surfaces of a substrate or value document which are negligible in a thickness of a substrate or document of value, which is only fractions of a millimeter in the case of card bodies or only fractions of a millimeter in banknotes, and which usually can not be provided with security elements or coatings.
  • Information in the sense of this invention is a pattern-shaped and visually perceptible coating.
  • This can for example form a graphic image, a picture, a number, a letter, a text or other characters.
  • the information consists of positive or / and negative motives.
  • a motif element in this case a motif element is itself applied to the substrate, whereas in the case of a negative motif the area surrounding the motif element is applied to the substrate.
  • a positive subject is a letter printed in dark color on the light substrate.
  • a negative motif is, for example, a surface applied in a dark color to the substrate, which has an unprinted area in the form of a letter within the area.
  • Fig. 1 shows in Fig. 1a and Fig. 1b schematically a substrate 1 in side view, wherein the substrate 1 is not smoothed on its upper side in the areas 2 and thus has a rough surface.
  • area 3 the upper side of the substrate 1 is smoothed and thus has a smooth surface, which in this embodiment shows the information with the letter "A”.
  • Fig. 1a shows the substrate 1 in side view and Fig. 1b in plan view, wherein the frame 5 shown in dashed line shows the section which increases along the section line AA in Fig. 1a is shown.
  • Fig. 2 shows the embodiment Fig. 1 , wherein in addition a color 4 is printed with optically variable pigments on the top of the substrate 1, that the color 4 is located on both the non-smoothed areas 2 and on the smoothed area 3 and thus the color 4 overlaps the area 3.
  • Fig. 2a shows the substrate 1 with the printed color 4 in side view and Fig. 2b in plan view, where appropriate Fig. 1 the in Fig. 2b Frame 5 shown by the dashed line shows the section which increases along the section line AA in Fig. 2a is shown.
  • the color for a viewer has a different appearance than in areas 2 outside of area 3, which is shown in FIG Fig. 2b is represented by a different hatching within the color 4.
  • the color 4 appears shiny in the overlapping area with area 3 and matt in the overlapping area with the areas 2 and thus outside the area 3.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Finance (AREA)
  • Mechanical Engineering (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)

Description

Die Erfindung betrifft ein Verfahren zur Aufbringung eines optisch variablen Sicherheitselements auf eine Oberseite eines Substrats eines Wertdokuments, wobei die Oberseite des Substrats aus Papier besteht. Das optisch variable Sicherheitselement besteht aus einer Farbe mit optisch variablen Pigmenten, die auf einen ersten Bereich der Oberseite des Substrats aus Papier aufgedruckt wird.The invention relates to a method for applying an optically variable security element to an upper side of a substrate of a value document, wherein the upper side of the substrate consists of paper. The optically variable security element consists of a color with optically variable pigments, which is printed on a first area of the upper side of the paper substrate.

Zum Schutz gegen Nachahmung oder Fälschung, insbesondere mit Farbkopierern oder anderen Reproduktionsverfahren, werden Wertdokumente, wie beispielsweise Banknoten oder Karten, mit optisch variablen Sicherheitselementen ausgestattet. Der Fälschungsschutz beruht dabei darauf, dass der visuell und einfach und deutlich erkennbare optisch variable Effekt von den oben genannten Reproduktionsgeräten nicht oder nur ungenügend wiedergegeben werden kann.To protect against imitation or counterfeiting, especially with color copiers or other reproduction methods, value documents, such as banknotes or cards, are equipped with optically variable security elements. The protection against counterfeiting is based on the fact that the visually and simply and clearly recognizable optically variable effect can not or only insufficiently be reproduced by the abovementioned reproduction devices.

Derartige optisch variable Sicherheitselemente sind beispielsweise Effektfarben, bei denen eine Farbe mit Pigmenten in Form von Dünnschichtelementen versetzt ist, wobei die Dünnschichtelemente aus einer Reflektorschicht, einem Dielektrikum und einer Absorberschicht bestehen. Wird das Sicherheitselement von der Absorberseite aus betrachtet, nimmt der Betrachter eine bestimmte Farbe wahr, die sich mit Änderung des Betrachtungswinkels ändert. Derartige pigmentförmige Dünnschichtelemente, die einer Druckfarbe beigemischt werden, sind beispielsweise aus EP 0 227 423 B1 bekannt. Druckfarben mit magnetisch ausrichtbaren optisch variablen Interferenzpigmenten sind beispielsweise aus EP 1880 866 A1 bekannt.Such optically variable security elements are, for example, effect colors in which a color is mixed with pigments in the form of thin-film elements, wherein the thin-film elements consist of a reflector layer, a dielectric and an absorber layer. If the security element is viewed from the absorber side, the viewer perceives a certain color, which changes as the viewing angle changes. Such pigment-like thin-film elements which are admixed with an ink are, for example, made EP 0 227 423 B1 known. Printing inks with magnetically orientable optically variable interference pigments are for example made EP 1880 866 A1 known.

Die Druckqualität von Effektfarben, speziell der magnetisch orientierbaren Farben, im Siebdruck ist in hohem Maße von der Oberflächenqualität des verwendetet Substrates abhängig. Eine glatte Substratoberfläche führt zu einem deutlich homogeneren und randschärferen Druck und verbessert den optischen Effekt. Eine glattere Oberfläche eines Papiersubstrats kann beispielsweise durch Kalandrierung oder Satinierung erzeugt werden, aber auch durch Drucken eines Primers unter den Effektfarbenbereich. Bei der Kalandrierung oder Satinierung eines Papiers wird die Papierbahn während der Papierherstellung in einen sogenannten Kalander geführt, der als Rollenkalander oder als Prägekalander ausgeführt sein kann. Im Bogenkalander wird die Papierbahn zwischen übereinander angeordneten Walzen mechanisch unter Druck, Friktion und Wärme hindurchgeführt, so dass das Papier seine endgültige Oberflächenstruktur erhält, insbesondere seinen Glanz und seine Glätte. Im Prägekalander wird die Papierbahn mittels eines Prägestempels mit mechanischem Druck beaufschlagt und gegebenenfalls zusätzlich verprägt.The print quality of effect colors, especially the magnetically orientable colors, in screen printing depends to a great extent on the surface quality of the substrate used. A smooth substrate surface leads to a much more homogeneous and marginal sharpening pressure and improves the optical effect. For example, a smoother surface of a paper substrate can be formed by calendering or satinization, but also by printing a primer under the effect color area. During the calendering or satinization of a paper, the paper web is guided during papermaking in a so-called calender, which can be designed as a roll calender or as a stamping calender. In the sheet calender, the paper web is passed between superimposed rolls mechanically under pressure, friction and heat, so that the paper receives its final surface texture, in particular its gloss and its smoothness. In the embossing calender, the paper web is acted upon by means of a stamping die with mechanical pressure and optionally additionally embossed.

Eine Kalandrierung findet automatisch im Stichtiefdruck statt, dabei ist jedoch die Druckreihenfolge bereits festgelegt, nämlich zuerst Stichtiefdruck und dann Siebdruck. Sollte designtechnisch jedoch Stichtiefdruck über bzw. nach Siebdruck appliziert werden, kann diese Variante der Kalandrierung mittels Stichtiefdruck nicht gewählt werden. In diesem Fall wird üblicherweise ein Primer im Siebdruck im ersten Druckschritt appliziert, der zu einer glatten Oberfläche auf dem Papier führt und der anschließend mit der Effektfarbe überdruckt wird. Dies ist jedoch nur mit Maschinen des Typs Notascreen der Fa. KBA-NotaSys mit Zwischentrockner möglich. Bei Maschinen ohne Zwischentrockner sind zwei separate Durchgänge durch die Druckmaschine notwendig, die zeitaufwendig und kostenintensiv sind.Calendering takes place automatically in intaglio printing, but the printing sequence is already defined, namely first gravure printing and then screen printing. If, however, gravure printing is applied by means of screen printing over or after screen printing, this variant of calendering can not be selected by intaglio printing. In this case, a primer is usually applied by screen printing in the first printing step, which leads to a smooth surface on the paper and which is then overprinted with the effect color. However, this is only possible with machines of the type Notascreen from KBA-NotaSys with intermediate dryer. For machines without intermediate dryers, two separate passes through the press are required, which are time consuming and costly.

Die Dokumente WO 2009/147204 A2 und DE 689 17 144 T3 offenbaren ein Verfahren nach dem Oberbegriff des Anspruchs 1.The documents WO 2009/147204 A2 and DE 689 17 144 T3 disclose a method according to the preamble of claim 1.

Der Erfindung liegt deshalb die Aufgabe zugrunde, ein gattungsgemäßes Sicherheitselement derart weiterzubilden, dass die Nachteile des Standes der Technik behoben werden und der Schutz gegenüber Fälschungen weiter erhöht wird.The invention is therefore the object of developing a generic security element such that the disadvantages of the prior art are eliminated and the protection against counterfeiting is further increased.

Diese Aufgabe wird durch die Merkmale des unabhängigen Anspruchs 1 gelöst. Weiterbildungen der Erfindung sind Gegenstand der abhängigen Ansprüche.This object is solved by the features of independent claim 1. Further developments of the invention are the subject of the dependent claims.

Erfindungsgemäß erfolgt vor dem Aufdrucken der Farbe mit optisch variablen Pigmenten eine Glättung eines zweiten Bereichs der Oberseite des Substrats aus Papier, wobei sich der zweite Bereich mit der Glättung und der erste Bereich mit der Farbe mit optisch variablen Pigmenten mindestens teilweise überlappen. Damit weist die Farbe mit optisch variablen Pigmenten für einen Betrachter im Bereich der Überlappung ein anderes Erscheinungsbild auf als außerhalb der Überlappung. Beispielsweise zeigt die Farbe für einen Betrachter im Bereich der Überlappung eine glänzende Oberfläche und außerhalb der Überlappung eine matte Oberfläche. Es erfolgt somit eine partielle Glättung des Substrates mindestens in den Bereichen, die für einen späteren Siebdruck vorgesehen sind. Dadurch wird besonders vorteilhaft eine zumindest partielle Oberflächenglättung des Substrates vor dem nachfolgenden Siebdruckprozess erzielt.According to the invention, prior to the printing of the ink with optically variable pigments, a smoothing of a second region of the upper side of the substrate made of paper, wherein the second region with the smoothing and the first region with the color with optically variable pigments at least partially overlap. Thus, the color with optically variable pigments has a different appearance for a viewer in the area of the overlap than outside the overlap. For example, the color for a viewer in the area of the overlap shows a glossy surface and, outside the overlap, a matt surface. There is thus a partial smoothing of the substrate at least in the areas which are intended for a later screen printing. As a result, it is particularly advantageous to achieve at least partial surface smoothing of the substrate prior to the subsequent screen printing process.

Das unterschiedliche Erscheinungsbild, das die Farbe für einen Betrachter im Bereich der Überlappung und außerhalb der Überlappung zeigt, ergibt sich daraus, dass die optisch variablen Pigmente auf einer glatten Oberfläche eine andere Ausrichtung aufweisen bzw. anders orientiert sind, als auf einer rauen Oberfläche.The different appearance of the color to a viewer in the area of the overlap and outside of the overlap results from the fact that the optically variable pigments have a different orientation or are oriented differently on a smooth surface than on a rough surface.

Optisch variable Pigmente sind im Sinne dieser Erfindung alle Pigmente, deren visuelles Erscheinungsbild sich bei Verkippen ändert. Beispielsweise ändert sich bei Verkippen ihre Farbe, bewegt sich scheinbar ein Balken von einer Seite des Pigments bzw. der Farbe zu einer anderen Seite, werden beim Verkippen des Pigments bzw. der Farbe unterschiedliche Zeichen dargestellt oder ergibt sich ein sogenannter Pumpeffekt in Form einer sich vergrößernden oder verkleinernden Umrisslinie eines Bildmotivs. Derartige Pigmente können beispielsweise die oben bereits erwähnten Dünnschichtelemente oder magnetisch ausrichtbare, optisch variable Interferenzpigmente sein. Es können jedoch auch metallische oder metallisch wirkende Pigmente sein, die beispielsweise eine silberne Farbe zeigen und deren Glanz oder Reflexionsvermögen sich bei Verkippen ändert.For the purposes of this invention, optically variable pigments are all pigments whose visual appearance changes with tilting. For example, changes in tilting their color, moves apparently a bar from one side of the pigment or the color to another side, are shown in tilting the pigment or the color different characters or results in a so-called pumping effect in the form of an enlarging or downsizing outline of a picture motif. Such pigments may be, for example, the above-mentioned thin-film elements or magnetically orientable, optically variable interference pigments. However, it may also be metallic or metallic acting pigments, for example, show a silver color and their gloss or reflectivity changes when tilted.

Gemäß einer bevorzugten Ausführungsform ist vorgesehen, dass die Farbe mit optisch variablen Pigmenten im Siebdruckverfahren auf den ersten Bereich der Oberseite des Substrats aus Papier aufgedruckt wird. Grundsätzlich eignet sich jedes Druckverfahren, das zum Drucken einer Farbe mit optisch variablen Pigmenten geeignet ist, zur Durchführung des erfindungsgemäßen Verfahrens, bei dem Siebdruckverfahren werden jedoch die optisch variablen Pigmenten besonders schonend verdruckt, d.h. ohne bzw. geringst möglicher mechanischer Beschädigung. Besonders vorteilhaft ergibt sich durch das erfindungsgemäße Verfahren eine höhere Druckqualität des Siebdrucks, insbesondere wenn der Siebdruck vor dem Stichtiefdruck erfolgt.According to a preferred embodiment, it is provided that the color is printed with optically variable pigments in the screen printing process on the first region of the top of the paper substrate. In principle, any printing method which is suitable for printing a color with optically variable pigments is suitable for carrying out the method according to the invention; in the screen printing method, however, the optically variable pigments are printed particularly gently, i. without or least possible mechanical damage. Particularly advantageous results from the inventive method, a higher print quality of the screen printing, especially when the screen printing is done before the intaglio.

Des Weiteren ergibt sich besonders vorteilhaft eine höhere Flexibilität bei der Wahl der Druckreihenfolge bzw. Einsparung eines Druckgangs bei Zweifach-Belegung der Siebdruckmaschinen.Furthermore, it is particularly advantageous to have greater flexibility in the choice of the printing sequence or the saving of a printing cycle in the case of double-use of the screen printing machines.

Gemäß einer bevorzugten Ausführungsform ist vorgesehen, dass die Glättung entweder während der Herstellung des Substrats in einer Papiermaschine oder nach der Herstellung des Substrats während einer Veredelung der Oberfläche des Papiers erfolgt.According to a preferred embodiment it is provided that the smoothing takes place either during the production of the substrate in a paper machine or after the production of the substrate during a refinement of the surface of the paper.

Gemäß einer bevorzugten Ausführungsform ist vorgesehen, dass die Glättung über eine Polierwalze, eine Kalanderwalze, eine Fräsung oder über einen Stempel erfolgt. Eine Polierwalze poliert hierbei die Oberfläche des Substrats, so dass die Oberfläche in diesem Bereich geglättet wird. Alternativ dazu verpresst eine Kalanderwalze ebenso wie ein Stempel die Oberfläche des Substrats und glättet sie somit, wobei eine Kalanderwalze gegenüber einem Stempel den Vorteil hat, dass sie universeller einsetzbar ist, designunabhängig verwendet werden kann und einfach mit dem Substrat in Passer gebracht werden kann. Alternativ ist eine Glättung mittels einer Fräsung der Oberfläche des Substrats möglich, wobei die Oberfläche des Substrats beispielsweise mechanisch mit einem Fräskopf oder mit einem Laser abgetragen und dabei die Dicke des Substrats verringert wird.According to a preferred embodiment, it is provided that the smoothing takes place via a polishing roller, a calender roller, a milling or a punch. A polishing roller here polishes the surface of the substrate, so that the surface is smoothed in this area. Alternatively, a calender roll as well as a die compresses and smoothes the surface of the substrate, with a calender roll having the advantage over a die that it is more universally applicable, can be used independently of design, and can be easily placed in register with the substrate. Alternatively, a smoothing by means of a milling of the surface of the substrate is possible, wherein the surface of the substrate, for example, removed mechanically with a milling head or with a laser and thereby the thickness of the substrate is reduced.

Ähnlich wie bei einer Polierwalze, kann auch eine sogenannte Patritze auf einen stabilen Zylinder gespannt werden. Die Patrize hat erhabene Stellen entsprechend dem durch die Glättung herauszuarbeitenden Muster. Über dem Zylinder mit Patrize wird die Papierbahn geführt. Das rotierende Werkzeug wird auf der der Patrize gegenüberliegenden Seite der Papierbahn präzise an die über den Patritzenzylinder laufende Papierbahn gebracht. Berührt das Werkzeug nur die Papieroberfläche, wird die Oberfläche durch das sogenannte Rollieren oder Polieren durch Reibung ohne Materialabtrag geglättet. Ist die Vorschubeinrichtung mit einem geeigneten Werkzeug bestückt und wird die Vorschubeinrichtung weiter in das Papiersubstrat hinein geführt, erfolgt zusätzlich ein Materialabtrag durch Fräsen. Durch den Einsatz geeigneter Patrizen lassen sich auf diese Weise besonders bevorzugt gemusterte Glatt- und Glanzbereiche herstellen.Similar to a polishing roller, a so-called patrix can be clamped on a stable cylinder. The patrix has raised areas according to the pattern to be worked out by the smoothing. The paper web is guided over the cylinder with male part. The rotating tool is placed precisely on the side of the paper web opposite the male part to the paper web running over the patrice cylinder. If the tool touches only the paper surface, the surface is smoothed by the so-called rolling or polishing by friction without material removal. If the feed device is equipped with a suitable tool and if the feed device is guided further into the paper substrate, material is removed by milling. Because of the engagement suitable patrices can be produced in this way particularly preferably patterned smooth and glossy areas.

Die geglättete und/oder gefräste Oberfläche kann dabei als Designelement ausgeführt sein. Hierbei weist insbesondere der Umriss der geglätteten und/oder gefrästen Oberfläche eine Information auf. Das Designelement weist bevorzugt eine Breite von 1,5 cm bis 5 cm auf.The smoothed and / or milled surface can be designed as a design element. Here, in particular, the outline of the smoothed and / or milled surface information. The design element preferably has a width of 1.5 cm to 5 cm.

Am fertigen Endprodukt, beispielsweise einer Banknote, insbesondere nach dem Stichtiefdruck, ist eine erfindungsgemäße Glättung üblicherweise nicht mehr sichtbar, da sie durch die nachfolgenden Druckschritte überdeckt wird. Des Weiteren sind keine Beeinträchtigungen des Farbtons der auf den erfindungsgemäß geglätteten Bereich aufgetragenen Farbe zu erwarten.On the finished end product, for example a banknote, in particular after intaglio printing, a smoothing according to the invention is usually no longer visible since it is covered by the subsequent printing steps. Furthermore, no impairment of the hue of the color applied to the smoothed area according to the invention is to be expected.

Gemäß einer weiteren bevorzugten Ausführungsform ist vorgesehen, dass die Glättung des Substrats in den Bereichen, die für einen späteren Siebdruck vorgesehen sind, vollflächig ausgeführt wird, beispielsweise mit einer Breite von 1,5 cm bis 5 cm. Es ergibt sich besonders vorteilhaft eine erhöhte Farbhaftung und eine verbesserte Planlage des Substrats.According to a further preferred embodiment, it is provided that the smoothing of the substrate in the areas which are provided for a subsequent screen printing, is carried out over the entire surface, for example with a width of 1.5 cm to 5 cm. This results in a particularly advantageous increased color adhesion and improved flatness of the substrate.

Das Substrat besteht besonders bevorzugt aus Papier aus Baumwollfasern, wie es beispielsweise für Banknoten verwendet wird, oder aus anderen natürlichen Fasern oder aus Synthesefasern oder einer Mischung aus natürlichen und synthetischen Fasern, oder aus mindestens einer Kunststofffolie. Weiterhin bevorzugt besteht das Substrat aus einer Kombination aus mindestens zwei übereinander angeordneten und miteinander verbundenen unterschiedlichen Substraten, einem sogenannten Hybrid. Hierbei besteht das Substrat beispielsweise aus einer Kombination Kunststofffolie-Papier-Kunststofffolie, d.h. ein Substrat aus Papier wird auf jeder seiner beiden Seiten durch eine Kunststofffolie bedeckt, oder aus einer Kombination Papier-Kunststofffolie-Papier, d.h. ein Substrat aus einer Kunststofffolie wird auf jeder seiner beiden Seiten durch Papier bedeckt.The substrate is particularly preferably made of paper made of cotton fibers, as used for example for banknotes, or of other natural fibers or of synthetic fibers or of a mixture of natural and synthetic fibers, or of at least one plastic film. Further preferably, the substrate consists of a combination of at least two superimposed and interconnected different substrates, a so-called hybrid. In this case, the substrate consists for example of a combination of plastic film-paper-plastic film, ie a paper substrate is on each of its two sides covered by a plastic film, or a combination of paper-plastic film paper, ie a substrate made of a plastic film is covered on each side by paper.

Angaben zum Gewicht des verwendeten Substrats sind beispielsweise in der Schrift DE 10243 653 A9 angegeben. Die Schrift DE 102 43 653 A9 führt insbesondere aus, dass die Papierschicht üblicherweise ein Gewicht von 50 g/m2 bis 100 g/m2 aufweist, vorzugsweise von 80 g/m2 bis 90 g/m2. Selbstverständlich kann je nach Anwendung jedes andere geeignete Gewicht eingesetzt werden.Information on the weight of the substrate used are, for example, in the Scriptures DE 10243653 A9 specified. The font DE 102 43 653 A9 in particular states that the paper layer usually has a weight of 50 g / m 2 to 100 g / m 2 , preferably from 80 g / m 2 to 90 g / m 2 . Of course, depending on the application, any other suitable weight can be used.

Wertdokumente, in denen ein derartiges Substrat bzw. Sicherheitspapier verwendet werden kann, sind insbesondere Banknoten, Aktien, Anleihen, Urkunden, Gutscheine, Schecks, hochwertige Eintrittskarten, aber auch andere fälschungsgefährdete Papiere, wie Pässe und sonstige Ausweisdokumente, sowie Karten, wie beispielsweise Kredit- oder Debitkarten, deren Kartenkörper mindestens eine Lage eines Sicherheitspapiers aufweist, und auch Produktsicherungselemente, wie Etiketten, Siegel, Verpackungen und dergleichen.Documents of value in which such a substrate or security paper can be used are, in particular, banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other papers which are subject to counterfeiting, such as passports and other identity documents, as well as cards, such as credit cards. or debit cards whose card body has at least one layer of security paper, and also product securing elements such as labels, seals, packages and the like.

Die vereinfachte Benennung Wertdokument schließt alle oben genannten Materialien, Dokumente und Produktsicherungsmittel ein.The simplified term value document includes all the above materials, documents and product safeguards.

Der Begriff der Oberseite des Substrats oder Wertdokuments ist ein relativer Begriff, der sowohl die Vorderseite oder Rückseite als auch als "die eine" und "die gegenüberliegende" Seite bezeichnet, die den überwiegenden Anteil der Gesamtoberfläche des Substrats oder Wertdokuments bilden. Ausdrücklich nicht umfasst mit diesem Begriff sind die Seitenflächen eines Substrats oder Wertdokuments, die bei einer Dicke eines Substrats oder Wertdokuments, die bei Kartenkörpern nur etwa einen Millimeter oder bei Banknoten nur Bruchteile eines Millimeters beträgt, verschwindend gering sind und üblicherweise nicht mit Sicherheitselementen oder Beschichtungen versehen werden bzw. werden können.The term top surface of the substrate or value document is a relative term that refers to both the front side or rear side as well as "the one" and "the opposite" side, which constitute the overwhelming portion of the overall surface of the substrate or document of value. Specifically not included with this term are the side surfaces of a substrate or value document, which are negligible in a thickness of a substrate or document of value, which is only fractions of a millimeter in the case of card bodies or only fractions of a millimeter in banknotes, and which usually can not be provided with security elements or coatings.

Eine Information im Sinne dieser Erfindung ist eine musterförmig gestaltete und visuell wahrnehmbare Beschichtung. Diese kann beispielsweise eine graphische Abbildung, ein Bild, eine Zahl, einen Buchstaben, einen Text oder sonstige Zeichen bilden. Besonders bevorzugt besteht die Information dabei aus positiven oder/und negativen Motiven. Bei einem positiven Motiv wird hierbei ein Motivelement selbst auf das Substrat aufgebracht, wohingegen bei einem negativen Motiv der das Motivelement umgebende Bereich auf das Substrat aufgebracht wird. Ein positives Motiv ist beispielsweise ein in dunkler Farbe auf das helle Substrat aufgedruckter Buchstabe. Ein negatives Motiv ist beispielsweise eine in dunkler Farbe auf das Substrat aufgebrachte Fläche, die innerhalb der Fläche einen unbedruckten Bereich in Form eines Buchstabens aufweist.Information in the sense of this invention is a pattern-shaped and visually perceptible coating. This can for example form a graphic image, a picture, a number, a letter, a text or other characters. Particularly preferably, the information consists of positive or / and negative motives. In the case of a positive motif, in this case a motif element is itself applied to the substrate, whereas in the case of a negative motif the area surrounding the motif element is applied to the substrate. For example, a positive subject is a letter printed in dark color on the light substrate. A negative motif is, for example, a surface applied in a dark color to the substrate, which has an unprinted area in the form of a letter within the area.

Es versteht sich, dass die vorstehend genannten und die nachfolgend noch zu erläuternden Merkmale nicht nur in den angegebenen Kombinationen, sondern auch in anderen Kombinationen einsetzbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen, soweit dies von dem Schutzumfang der Ansprüche erfasst ist.It is understood that the features mentioned above and those yet to be explained below can be used not only in the specified combinations but also in other combinations, without departing from the scope of the present invention, insofar as this is covered by the scope of the claims.

Anhand der nachfolgenden Ausführungsbeispiele und der ergänzenden Figuren werden die Vorteile der Erfindung erläutert. Die Ausführungsbeispiele stellen bevorzugte Ausführungsformen dar, auf die jedoch die Erfindung in keinerlei Weise beschränkt sein soll. Des Weiteren sind die Darstellungen in den Figuren des besseren Verständnisses wegen stark schematisiert und spiegeln nicht die realen Gegebenheiten wider. Insbesondere entsprechen die in den Figuren gezeigten Proportionen nicht den in der Realität vorliegenden Verhältnissen und dienen ausschließlich zur Verbesserung der Anschaulichkeit. Des Weiteren sind die in den folgenden Ausführungsbeispielen beschriebenen Ausführungsformen der besseren Verständlichkeit wegen auf die wesentlichen Kerninformationen reduziert. Bei der praktischen Umsetzung können wesentlich komplexere Muster oder Bilder zur Anwendung kommen.Reference to the following embodiments and the additional figures, the advantages of the invention will be explained. The embodiments represent preferred embodiments, to which, however, the invention should not be limited in any way. Furthermore, the representations in the figures of better understanding because of highly schematized and do not reflect the realities. In particular, the proportions shown in the figures do not correspond to the conditions present in reality and serve exclusively to improve the clarity. Furthermore, the embodiments described in the following exemplary embodiments are reduced to the essential core information for the sake of clarity. In the practical implementation much more complex patterns or images can be used.

Im Einzelnen zeigen schematisch:

Fig. 1
ein erfindungsgemäß geglättetes Substrat und hierbei in Fig. 1a in Seitenansicht und in Fig. 1b in Draufsicht,
Fig. 2
das erfindungsgemäß geglättete Substrat aus Fig. 1 mit einer aufgedruckten Farbe mit optisch variablen Pigmenten und hierbei in Fig. 2a in Seitenansicht und in Fig. 2b in Draufsicht.
In detail, show schematically:
Fig. 1
a substrate smoothed according to the invention and in this case Fig. 1a in side view and in Fig. 1b in plan view,
Fig. 2
the inventively smoothed substrate Fig. 1 with a printed color with optically variable pigments and here in Fig. 2a in side view and in Fig. 2b in plan view.

Fig. 1 zeigt in Fig. 1a und Fig. 1b schematisch ein Substrat 1 in Seitenansicht, wobei das Substrat 1 an seiner Oberseite in den Bereichen 2 nicht geglättet ist und damit eine raue Oberfläche aufweist. Im Bereich 3 ist die Oberseite des Substrats 1 geglättet und weist somit eine glatte Oberfläche auf, die in diesem Ausführungsbeispiel die Information mit dem Buchstaben "A" zeigt. Fig. 1a zeigt das Substrat 1 in Seitenansicht und Fig. 1b in Draufsicht, wobei der mit gestrichelter Linie dargestellte Rahmen 5 den Ausschnitt zeigt, der entlang der Schnittlinie A-A vergrößert in Fig. 1a dargestellt ist. Fig. 1 shows in Fig. 1a and Fig. 1b schematically a substrate 1 in side view, wherein the substrate 1 is not smoothed on its upper side in the areas 2 and thus has a rough surface. In area 3, the upper side of the substrate 1 is smoothed and thus has a smooth surface, which in this embodiment shows the information with the letter "A". Fig. 1a shows the substrate 1 in side view and Fig. 1b in plan view, wherein the frame 5 shown in dashed line shows the section which increases along the section line AA in Fig. 1a is shown.

Fig. 2 zeigt das Ausführungsbeispiel aus Fig. 1, wobei zusätzlich eine Farbe 4 mit optisch variablen Pigmenten derart auf die Oberseite des Substrats 1 aufgedruckt ist, dass sich die Farbe 4 sowohl auf den nicht geglätteten Bereichen 2 als auch auf dem geglätteten Bereich 3 befindet und somit die Farbe 4 den Bereich 3 überlappt. Fig. 2a zeigt das Substrat 1 mit der aufgedruckten Farbe 4 in Seitenansicht und Fig. 2b in Draufsicht, wobei entsprechend Fig. 1 der in Fig. 2b mit gestrichelter Linie dargestellte Rahmen 5 den Ausschnitt zeigt, der entlang der Schnittlinie A-A vergrößert in Fig. 2a dargestellt ist. Fig. 2 shows the embodiment Fig. 1 , wherein in addition a color 4 is printed with optically variable pigments on the top of the substrate 1, that the color 4 is located on both the non-smoothed areas 2 and on the smoothed area 3 and thus the color 4 overlaps the area 3. Fig. 2a shows the substrate 1 with the printed color 4 in side view and Fig. 2b in plan view, where appropriate Fig. 1 the in Fig. 2b Frame 5 shown by the dashed line shows the section which increases along the section line AA in Fig. 2a is shown.

In Bereich 3 zeigt die Farbe für einen Betrachter ein anderes Erscheinungsbild als in den Bereichen 2 außerhalb des Bereiches 3, was in Fig. 2b durch eine unterschiedliche Schraffierung innerhalb der Farbe 4 dargestellt wird. Beispielsweise erscheint die Farbe 4 im Überlappungsbereich mit Bereich 3 glänzend und im Überlappungsbereich mit den Bereichen 2 und damit außerhalb des Bereichs 3 matt.In area 3, the color for a viewer has a different appearance than in areas 2 outside of area 3, which is shown in FIG Fig. 2b is represented by a different hatching within the color 4. For example, the color 4 appears shiny in the overlapping area with area 3 and matt in the overlapping area with the areas 2 and thus outside the area 3.

Claims (7)

  1. Method for applying a visually variable security element to an upper side of a substrate (1) of a valuable document, wherein the upper side of the substrate (1) is composed of paper, wherein the visually variable security element is composed of an ink (4) which has visually variable pigments and which is printed on a first region (2) of the upper side of the substrate (1) of paper, characterized in that, prior to the printing of the ink (4) having visually variable pigments, a smoothing of a second region (3) of the upper side of the substrate (1) of paper is performed, wherein the second region (3) having the smoothing and the first region (2) having the ink (4) having visually variable pigments at least in part mutually overlap such that the ink (4) having visually variable pigments in the region of the overlap presents to an observer an appearance that is different from that outside the overlap.
  2. Method according to Claim 1, characterized in that the smoothing is performed during the production of the substrate in a paper machine.
  3. Method according to Claim 1, characterized in that the smoothing is performed after the production of the substrate, while finishing the surface of the paper.
  4. Method according to one of the preceding claims, characterized in that the ink having visually variable pigments is printed by the screenprinting method on the first region of the upper side of the substrate of paper.
  5. Method according to one of the preceding claims, characterized in that the smoothing is performed by way of a polishing roller, a calendaring roller, or a die.
  6. Method according to one of the preceding claims, characterized in that the smoothing of the substrate in those regions that are provided for the later screen printing is carried out across the entire area, for example by way of a width of 1.5 cm to 5 cm.
  7. Method according to one of the preceding claims, characterized in that the smoothing of the substrate in those regions that are provided for the later screen printing is carried out as a design element, for example by way of a width of 1.5 cm to 5 cm.
EP17001930.1A 2016-11-29 2017-11-24 Screen printing of effect colours on valuable documents Active EP3326833B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016014205.7A DE102016014205A1 (en) 2016-11-29 2016-11-29 Screen printing of effect colors on value documents

Publications (2)

Publication Number Publication Date
EP3326833A1 EP3326833A1 (en) 2018-05-30
EP3326833B1 true EP3326833B1 (en) 2019-09-11

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ID=60473259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17001930.1A Active EP3326833B1 (en) 2016-11-29 2017-11-24 Screen printing of effect colours on valuable documents

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EP (1) EP3326833B1 (en)
DE (1) DE102016014205A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ218573A (en) 1985-12-23 1989-11-28 Optical Coating Laboratory Inc Optically variable inks containing flakes
GB8821150D0 (en) * 1988-09-09 1988-10-12 De La Rue Co Plc Security device
DE4002979A1 (en) * 1990-02-01 1991-08-08 Gao Ges Automation Org Banknote with optically variable security elements - are transformed and pressed onto smooth surface to form hologram or relief pattern
DE19541064A1 (en) * 1995-11-03 1997-05-07 Giesecke & Devrient Gmbh Data carrier with an optically variable element
DE10243653A1 (en) 2002-09-19 2004-04-01 Giesecke & Devrient Gmbh security paper
DE102005011612A1 (en) * 2004-08-13 2006-02-23 Giesecke & Devrient Gmbh Data carrier with an optically variable structure
EP1880866A1 (en) 2006-07-19 2008-01-23 Sicpa Holding S.A. Oriented image coating on transparent substrate
FR2932116B1 (en) * 2008-06-05 2010-07-30 Oberthur Technologies FIDUCIARY OR ASSIMILE DOCUMENT HAVING FLAT-SHAPED REASONS AND SOFT-SIZE PRINTING, AND METHOD OF MANUFACTURING THE SAME

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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DE102016014205A1 (en) 2018-05-30
EP3326833A1 (en) 2018-05-30

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