EP1616711A1 - Intaglio printing plates for producing security features, product made by means of said printing plates - Google Patents
Intaglio printing plates for producing security features, product made by means of said printing plates Download PDFInfo
- Publication number
- EP1616711A1 EP1616711A1 EP05015042A EP05015042A EP1616711A1 EP 1616711 A1 EP1616711 A1 EP 1616711A1 EP 05015042 A EP05015042 A EP 05015042A EP 05015042 A EP05015042 A EP 05015042A EP 1616711 A1 EP1616711 A1 EP 1616711A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotary
- rotary gravure
- imaged
- gravure printing
- printing plates
- 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.)
- Withdrawn
Links
- 238000007639 printing Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 claims description 33
- 238000007646 gravure printing Methods 0.000 claims description 18
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000000758 substrate Substances 0.000 claims description 9
- 238000010894 electron beam technology Methods 0.000 claims description 8
- 238000004806 packaging method and process Methods 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 15
- 238000005530 etching Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 10
- 238000003384 imaging method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 238000000608 laser ablation Methods 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 235000000177 Indigofera tinctoria Nutrition 0.000 description 1
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 238000007766 curtain coating Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 229940097275 indigo Drugs 0.000 description 1
- COHYTHOBJLSHDF-UHFFFAOYSA-N indigo powder Natural products N1C2=CC=CC=C2C(=O)C1=C1C(=O)C2=CC=CC=C2N1 COHYTHOBJLSHDF-UHFFFAOYSA-N 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 238000007644 letterpress printing Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920006260 polyaryletherketone Polymers 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009516 primary packaging Methods 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/04—Printing plates or foils; Materials therefor metallic
- B41N1/06—Printing plates or foils; Materials therefor metallic for relief printing or intaglio printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/02—Engraving; Heads therefor
- B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
- B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/10—Watermarks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
- B41M3/14—Security printing
Definitions
- the invention relates to rotary gravure printing plates for the production of security features in the gravure printing method, which were previously produced only by other printing processes, mainly offset, such as flexographic, screen or digital printing, and a process for their preparation and the products produced by this method using the intaglio printing plates according to the invention.
- Digital watermarks are carriers of information embedded in a digital image for copyright purposes. The information is not visible and can be read out using the appropriate software or hardware readers. With digital watermarks, the copyrighted data is hidden in the digital noise of the original documents. Noise is generated, for example, by scanning or by recording with a digital camera.
- the digital watermark consists of additional data embedded in the image, which are invisible to the human eye. This is possible because human perception has only a limited ability to discriminate. Every single pixel of an image gets a slightly modified color value. These changed pixels corrected the eye, so that no difference to the conventional image is recognizable - the mark thus does not impair its quality visibly. In addition, the user can select how large the deviation from the original should be.
- the watermark is placed behind the entire image or only in partial areas, therefore it is also contained in individual image sections.
- the object of the invention was to make the described security features accessible in particular rotary gravure printing methods.
- the invention therefore rotative gravure printing plates, characterized in that the corresponding invisible security feature to be applied in rotary gravure printing is generated as a data file, whereupon the rotary gravure printing form is engraved or imaged accordingly.
- a method is preferably used in which a corresponding cylinder is engraved or by means of a laser or electron beam imaging process, a laser or electron surface structuring or a laser ablation process (cylinder is coated with black protective coating, the image to be transferred is laser burned in coating, subsequent etching with Fe (3) chloride imaged or surface-structured directly.
- a corresponding data file is generated in a first step.
- a halftone original which may be monochrome or color, is watermarked in a suitable program, with the two pieces of fingerprint ID and image ID included in the original halftone original data.
- Digital watermarks are noise that was not randomly generated but from the watermark. Another watermark would give a different noise. To the noise, which represents the invisible watermark, now the original image is included.
- the resulting image then consists of the original image and the watermark noise. It can not be visually distinguished from the original image, although it contains an invisible watermark. This image can now be duplicated after the engraving of a rotary gravure form in mass production.
- the image is scanned in with a commercially available scanner and checked with the appropriate detector.
- the watermark is now included in the original file according to the invention.
- the data is prepared according to a data workflow in corresponding, adapted to the cylinder production system file formats. This can be done, for example, with a workflow of the company ARTWORK-NEXUS in TIFF data format.
- variable parameters such as variable robustness; preferred image regions, no homogeneous surfaces, strong color gradients, contrast, information depth of the watermark result in countless possible combinations.
- RES5-RES20 where RES 12 means 12 pixels per mm.
- the image produced in this way is then exposed to a prepared cylinder in a corresponding exposure system.
- a gravure cylinder with a core of iron tube with wall thickness 20 mm for example, a gravure cylinder with a core of iron tube with wall thickness 20 mm, and the following layers: 5-7 ⁇ m nickel layer, 300 ⁇ m copper layer; existing photosensitive layer with the corresponding patterns, shapes, lines, letters in the form of the previously defined grid imaged, developed and etched. (or Daetwyler's direct laser procedure on zinc) (or novel Hell-Xtrem®, Ohio-Transscribe® engraving procedures)
- the coating of the cylinder is carried out in the usual way with a plastic transfer wheel, or by spraying rolling, brushing, dipping, or by means of a curtain coating process, preferably in one Layer thickness of 2 - 10 microns with a commercially available photosensitive composition such as LD 100, OHKA Kogyo Ltd.
- the cylinder is provided with an overcoat with a layer thickness of 1 - 5 microns, for example with OC-40 (OHKA Kogyo Ltd) or with an analogous similar commercial composition.
- the development takes place after the exposure in the usual manner, for example, contactless with sodium carbonate (0.5% solution), this is usually followed by a cleaning process with water, after which the cylinder is dried.
- the corresponding gravure cylinder can also be imaged by the laser ablation process.
- an applied to the cylinder absorption layer is treated directly with the laser and evaporated. This creates an etchable mask.
- Such methods are, for example, the Scheppers-Ohio method or the Digilas method of the company Döwyler.
- etching following the laser beam imaging reflects the image, patterns, shapes and the like defined by the laser beam imaging on the surface of the cylinder.
- the etching can be carried out in various ways, for example by means of a Fe (III) chloride solution or a Cu (II) chloride solution, optionally with the addition of HCl or H 2 SO 4 . If appropriate, commercially available and known additives for flank protection can also be added to the etching solution.
- the duration of the action of the etchant depends on the etchant used and is for example when using a Cu-chloride solution with the addition of an acid about 90 - 2400 sec.
- the cylinder looks blunt and visually dark after the etching process.
- a surface treatment with electrolytic or chemical glazes the impression structure can be finished and a brilliant surface can be created.
- the engraved, imaged or surface-structured gravure cylinder can now apply color to a suitable substrate in rotary gravure printing.
- the watermark can be read out again.
- Synchronization elements are visible or invisible elements in the print image which can be read out with the scanner and which enable the readout software to eliminate any distortions or rotations in the print image for data presentation so that the watermark can be read out.
- the authentication takes place with the appropriate detector by suitable software.
- Digital watermarks can be restricted to specific image regions. The insertion depth (robustness) can also be adjusted.
- the image produced in this way is now engraved in a corresponding exposure system on a prepared cylinder or surface-structured, preferably by laser engraving or exposed or generated by means of etchable mask.
- Laser or electron beam engraving are distinguished by the fact that the surface of the gravure cylinder, which may consist of a copper layer or zinc layer, is processed directly from the data of the computer mechanically according to the data file specification. It is structured with correspondingly powerful laser beams (100 - 5000 watts) directly the material. The beam diameters are from 2 to 100 ⁇ m, preferably from 10 to 40 ⁇ m.
- the laser or electron beam sources are clocked according to the image to be displayed or modulated with a shutter. For focusing appropriate optical aids such as lenses for lasers or electro-magnetic fields for electron beams are used. A Tiefdrucknäpfchen can also be generated by multiple beam injections.
- a gravure cylinder with a core made of iron tube with wall thickness 20 mm, and the following layers: 5-7 ⁇ m nickel layer, 300 ⁇ m copper layer; existing photosensitive layer with the corresponding patterns, shapes, lines, letters in the form of the previously defined grid imaged, developed and etched.
- the coating of the cylinder is carried out in the usual way with a Kunststoffübertragungsrad, or by spraying rolling, brushing, dipping, or by means of a Vorhang Huaweisvons, preferably in a layer thickness of 2-10 microns with a commercially available photosensitive composition, for example, LD 100, OHKA Kogyo Ltd.
- the cylinder is provided with an overcoat with a layer thickness of 1-5 microns, for example, with OC-40 (OHKA Kogyo Ltd) or with an analogous commercial composition.
- the development takes place after the exposure in the usual manner, for example, contactless with sodium carbonate (0.5% solution), this is usually followed by a cleaning process with water, after which the cylinder is dried.
- an etching mask can also be produced by directly removing the applied protective layer.
- a black protective lacquer This can be done as in the case of the photoresist by spraying, pouring etc.
- the laser with power between 1-100 watts (beam diameter 5 - 40 ⁇ m) now removes the paint on the areas to be etched, which are defined by the data file and exposes the copper surface to be etched.
- etching following the laser beam imaging reflects the image, patterns, shapes and the like defined by the laser beam imaging on the surface of the cylinder.
- the etching can be carried out in various ways, for example by means of a Fe (III) chloride solution or a Cu (II) chloride solution, optionally with the addition of HCl or H 2 SO 4 . If appropriate, commercially available and known additives for flank protection can also be added to the etching solution.
- the duration of the action of the etchant depends on the etchant used and is for example when using a Cu-chloride solution with the addition of an acid about 90 - 2400 sec.
- the cylinder looks blunt and visually dark after the etching process.
- a surface treatment with electrolytic or chemical shining refines the impression structure and produces a brilliant surface.
- the intaglio printing plates according to the invention are used for producing invisible security features, which are only used with the aid of a corresponding detector (lens, scanner and the like) on carrier substrates.
- carrier foils are preferably flexible plastic foils, for example, PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in question.
- the carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 8 to 200 .mu.m, more preferably 12 to 50 .mu.m.
- metal foils for example Al, Cu, Sn, Ni, Fe or stainless steel foils having a thickness of 5-200 ⁇ m, preferably 10 to 80 ⁇ m, particularly preferably 20-50 ⁇ m, may serve as the carrier substrate.
- the films can also be surface-treated, coated or laminated, for example, with plastics or painted.
- paper or composites with paper for example composites with plastics having a basis weight of 20 to 500 g / m 2 , preferably 40 to 200 g / m 2, may also be used as the carrier substrates. be used.
- woven or nonwoven fabrics such as continuous fiber webs, staple fiber webs and the like, which may be needled or calendered, may be used.
- fabrics or webs of plastics such as PP, PET, PA, PPS and the like, but it can also be woven or nonwovens of natural, optionally treated fibers, such as viscose fiber webs are used.
- the fabrics or nonwovens used have a basis weight of about 20 g / m 2 up to 500 g / m 2 .
- these fabrics or nonwovens may be surface treated.
- the printed carrier substrates produced by means of the rotative intaglio printing plates according to the invention are therefore, if appropriate, suitable as security features in data carriers, in particular value documents such as identity cards, cards, banknotes or labels, seals and the like, but also as packaging material, for example in the pharmaceutical, electronic and / or or food industry, for example in the form of blister films, cartons, covers, film packaging and the like.
- the substrates or 048 film materials are preferably cut into strips or threads or patches, the width of the strips or threads preferably being 0.05-10 mm and the patches preferably having average widths or lengths of 2 -30 mm.
- the film material is preferably cut into strips, tapes, threads or patches, wherein the width of the threads, strips or tapes is preferably 0.05-50 mm and the patches are preferably average widths and lengths of 2 -30 mm.
- These printing methods can also be printed directly onto the primary packaging such as cardboard, foils, aluminum, blisters, etc.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Printing Methods (AREA)
Abstract
Description
Die Erfindung betrifft rotative Tiefdruckformen zur Herstellung von Sicherheitsmerkmalen im Tiefdruckverfahren, die bisher nur durch andere Druckverfahren, hauptsächlich Offset, beispielsweise Flexodruck, Siebdruck oder Digitaldruck herstellbar waren, sowie ein Verfahren zu deren Herstellung und die mit diesem Verfahren unter Verwendung der erfindungsgemäßen Tiefdruckformen hergestellte Produkte.The invention relates to rotary gravure printing plates for the production of security features in the gravure printing method, which were previously produced only by other printing processes, mainly offset, such as flexographic, screen or digital printing, and a process for their preparation and the products produced by this method using the intaglio printing plates according to the invention.
Es ist eine Vielzahl von unsichtbaren Sicherheitsmerkmalen, insbesondere für Verpackungen von sensiblen Gütern, wie Pharmazeutika, Lebensmitteln, Kosmetika, elektronischen Bauteilen und dergleichen bekannt.There are a variety of invisible security features, especially for packaging of sensitive goods, such as pharmaceuticals, foods, cosmetics, electronic components and the like known.
Sure Sign® Sicherheitsmerkmale und digitale Wasserzeichen sind bekannt. Sie sind für das freie Auge unsichtbar, können jedoch mit Hilfe eines Scanners und einer entsprechenden Entschlüsselungssoftware ausgelesen werden.Sure Sign® security features and digital watermarks are known. They are invisible to the naked eye but can be read out with the aid of a scanner and corresponding decryption software.
Digitale Wasserzeichen sind Träger von Informationen, die in ein digitales Bild eingebettet werden zur Wahrung von Urheberrechten. Die Information ist nicht sichtbar und kann mit Hilfe der adäquaten Software oder Hardware-Lesegeräten ausgelesen werden.
Bei digitalen Wasserzeichen werden die urheberrechtlich relevanten Daten im digitalen Rauschen der Originaldokumente versteckt. Rauschen entsteht zum Beispiel durch das Scannen oder durch die Aufnahme mit einer Digitalkamera. Das digitale Wasserzeichen besteht aus ins Bild eingebetteten Zusatzdaten, die fürs menschliche Auge unsichtbar sind. Möglich wird das, weil die menschliche Wahrnehmung nur eine begrenzte Unterscheidungsfähigkeit aufweist. Jeder einzelne Bildpunkt (Pixel) eines Bildes erhält einen leicht modifizierten Farbwert. Diese veränderten Bildpunkte korrigiert das Auge, so dass kein Unterschied zum herkömmlichen Bild erkennbar ist - die Markierung beeinträchtigt also dessen Qualität nicht sichtbar. Außerdem kann der Anwender auswählen, wie groß die Abweichung vom Original sein soll.Digital watermarks are carriers of information embedded in a digital image for copyright purposes. The information is not visible and can be read out using the appropriate software or hardware readers.
With digital watermarks, the copyrighted data is hidden in the digital noise of the original documents. Noise is generated, for example, by scanning or by recording with a digital camera. The digital watermark consists of additional data embedded in the image, which are invisible to the human eye. This is possible because human perception has only a limited ability to discriminate. Every single pixel of an image gets a slightly modified color value. These changed pixels corrected the eye, so that no difference to the conventional image is recognizable - the mark thus does not impair its quality visibly. In addition, the user can select how large the deviation from the original should be.
Das Wasserzeichen wird hinter das gesamte Bild oder nur in Teilbereiche gelegt, ist daher auch in einzelnen Bildausschnitten enthalten.The watermark is placed behind the entire image or only in partial areas, therefore it is also contained in individual image sections.
Je robuster ein digitales Wasserzeichen eingebettet wird, desto stärker sind Artefakte sichtbar. Demgegenüber übersteht ein Wasserzeichen kaum Attacken, wenn das Bild für den Betrachter unverändert bleiben soll.The more robust a digital watermark is embedded, the more artifacts are visible. In contrast, a watermark hardly survives attacks if the image is to remain unchanged for the viewer.
Während des Produktionsprozesses werden durch Umsetzen der Bilddaten in Gravurdaten in Raster, durch Gravieren mit Diamantstichel auf einen Zylinder, Verchromen und natürlich Drucken die eingerechneten Wasserzeichen "verschliffen". Dies erschwert deutlich das Auslesen der Wasserzeichen mittels Scanner, da produktionsbedingte Störungen einfließen. Die Robustheit definiert den Stör Nutzsignalabstand der Scannerdaten bei dem eindeutig das Wasserzeichen identifiziert werden kann. Durch produktionsbedingte Schwankungen gibt es eine bestimmte Varianz des S/N Abstandes. Es darf jedoch ein Wert von 50 % nicht unterschritten werden, ansonsten ist eine Auswertung nicht möglich.During the production process, by converting the image data into engraving data in raster, engraving with a diamond stylus on a cylinder, chroming and, of course, printing, the watermarks taken into account are "sanded". This makes it much more difficult to read out the watermarks by means of a scanner because of production-related problems. The robustness defines the Stör useful signal distance of the scanner data in which the watermark can be clearly identified. Due to production-related fluctuations, there is a certain variance of the S / N distance. However, it must not fall below a value of 50%, otherwise an evaluation is not possible.
Ein Unterschied zwischen Original und Bild mit Wasserzeichen ist meist nicht zu erkennen, bei der Vergrößerung kann man allerdings die Artefakte des Wasserzeichens erkennen.
Es bedarf also ausgefeilter Algorithmen, um die Kluft zwischen Robustheit und Unsichtbarkeit des digitalen Wasserzeichens zu überwinden.A difference between the original and the image with watermarks is usually not visible, but in the enlargement you can see the artifacts of the watermark.
So sophisticated algorithms are needed to bridge the gap between robustness and invisibility of the digital watermark.
Gegebenenfalls können alle diese Sicherheitsmerkmale auch individualisiert sein.If necessary, all these security features can also be individualized.
Die beschriebenen für das freie Auge unsichtbaren Sicherheitsmerkmale sind bisher entweder nur durch Digitaldruckverfahren (beispielsweise Xeikon, HP Indigo und the factory) oder durch Flexo- bzw. Buchdruck und Inkjetdruck zugänglich.The described security features which are invisible to the naked eye are hitherto either only by digital printing methods (for example Xeikon, HP Indigo and the factory) or by flexo or letterpress printing and inkjet printing accessible.
Aufgabe der Erfindung war es die beschriebenen Sicherheitsmerkmale durch insbesondere rotative Tiefdruckverfahren zugänglich zu machen.The object of the invention was to make the described security features accessible in particular rotary gravure printing methods.
Gegenstand der Erfindung sind daher rotative Tiefdruckformen, dadurch gekennzeichnet, dass das entsprechende im rotativen Tiefdruck aufzubringende unsichtbare Sicherheitsmerkmal als Datenfile generiert wird, worauf die rotative Tiefdruckform entsprechend graviert bzw. bebildert wird.The invention therefore rotative gravure printing plates, characterized in that the corresponding invisible security feature to be applied in rotary gravure printing is generated as a data file, whereupon the rotary gravure printing form is engraved or imaged accordingly.
Zur Herstellung der rotativen Tiefdruckform wird vorzugsweise ein Verfahren verwendet bei dem ein entsprechender Zylinder graviert oder mit Hilfe eines Laser- oder Elektronenstrahlbebilderungsverfahrens, einer Laser- oder Elektronenober-flächenstrukturierung oder eines Laserablationsverfahrens (Zylinder wird mit schwarzer Schutzschicht beschichtet (Coating); das zu übertragende Bild wird durch Laser in Beschichtung weggebrannt; anschließende Ätzung mit Fe(3)-chlorid) bebildert oder direkt oberflächenstrukturiert wird.For the production of the rotary gravure mold, a method is preferably used in which a corresponding cylinder is engraved or by means of a laser or electron beam imaging process, a laser or electron surface structuring or a laser ablation process (cylinder is coated with black protective coating, the image to be transferred is laser burned in coating, subsequent etching with Fe (3) chloride imaged or surface-structured directly.
Dazu wird in einem ersten Schritt ein entsprechendes Datenfile generiert.For this purpose, a corresponding data file is generated in a first step.
Zur Herstellung eines SureSign® Merkmals wird eine Halbtonvorlage, die monochrom oder farbig sein kann, in einem geeigneten Programm mit dem Wasserzeichen versehen, wobei die beiden Informationen bestehend aus der Fingerprint ID und der Image ID in die Originaldaten der Halbtonvorlage eingerechnet werden.To produce a SureSign® feature, a halftone original, which may be monochrome or color, is watermarked in a suitable program, with the two pieces of fingerprint ID and image ID included in the original halftone original data.
Digitale Wasserzeichen sind ein Rauschen, das nicht etwa zufällig, sondern aus dem Wasserzeichen erzeugt wurde. Ein anderes Wasserzeichen würde ein anderes Rauschen ergeben. Zu dem Rauschen, welches das unsichtbare Wasserzeichen darstellt, wird nun das Originalbild eingerechnet.Digital watermarks are noise that was not randomly generated but from the watermark. Another watermark would give a different noise. To the noise, which represents the invisible watermark, now the original image is included.
Das resultierende Bild besteht dann aus dem Originalbild und dem Wasserzeichenrauschen. Es kann rein optisch nicht vom Originalbild unterschieden werden, obwohl es ein unsichtbares Wasserzeichen enthält. Dieses Bild kann jetzt nach der Gravur einer rotativen Tiefdruckform in der Massenproduktion vervielfältigt werden.The resulting image then consists of the original image and the watermark noise. It can not be visually distinguished from the original image, although it contains an invisible watermark. This image can now be duplicated after the engraving of a rotary gravure form in mass production.
Das Bild wird mit einem handelsüblichen Scanner eingescannt und mit dem entsprechenden Detektor überprüft.The image is scanned in with a commercially available scanner and checked with the appropriate detector.
Das Wasserzeichen wird nun erfindungsgemäß in die Originaldatei eingerechnet. Die Daten werden entsprechend einem Datenworkflow in entsprechende, dem Zylinderherstellungssystem angepasste Dateiformate aufbereitet. Dies kann beispielsweise mit einem Workflow der Fa. ARTWORK-NEXUS im TIFF-Datenformat erfolgen.The watermark is now included in the original file according to the invention. The data is prepared according to a data workflow in corresponding, adapted to the cylinder production system file formats. This can be done, for example, with a workflow of the company ARTWORK-NEXUS in TIFF data format.
Anschließend werden nun entsprechende dieser Parameter die Einstellungen für Raster, Stichel, Winkelung etc. getroffen in der Gravur getroffen.Subsequently, the corresponding settings for the grid, engraving, angulation, etc. are taken in the engraving.
Das Einrechnen des Wasserzeichens in die Originaldatei erfolgt mittels geeigneter Software dabei kann das Wasserzeichen auf bestimmte Bildregionen beschränkt sein.
Durch variierbare Parameter, beispielsweise variable Robustheit; bevorzugte Bildregionen, keine homogenen Flächen, starke Farbverläufe, Kontrast, Informationstiefe des Wasserzeichens ergeben sich hier unzählige Kombinationsmöglichkeiten.The inclusion of the watermark in the original file by means of suitable software while the watermark may be limited to certain image regions.
By variable parameters, such as variable robustness; preferred image regions, no homogeneous surfaces, strong color gradients, contrast, information depth of the watermark result in countless possible combinations.
Die Daten werden nun im Daten-Workflow (z.B. Nexus®) weiterverarbeitet, wobei weitere Parameter wie z. B. Resolution festgelegt werden. Bevorzugt RES5-RES20, wobei RES 12 12 Pixel pro mm bedeutet.The data are now processed further in the data workflow (eg Nexus®), whereby further parameters such as eg. B. Resolution can be set. Preferably RES5-RES20, where RES 12 means 12 pixels per mm.
Mittels Gravur, Laserstrukturierung oder Laserbebilderung werden nun entsprechend dieser Parameter die Einstellungen für Raster, Winkelung etc. getroffen.
Vorzugsweise wird ein Raster von 60-120, bevorzugt 70-90 Linien/cm und eine Winkeleinstellung 30°-60° gewählt.
Im Standardtiefdruck werden farbige Bilder meist in den Grundfarben Cyan, Magenta, Gelb und Schwarz gedruckt. Würde man alle Farben mit dem gleichen Raster und Näpfchenwinkel erzeugen, würde im übereinander Druck der 4 Grundfarben ein Bild erzeugt, dass ein Moire aufweist und über die Produktionsauflage eine Farbdrift zeigen kann. Um diesen produktionsbedingten Erscheinungen entgegen wirken zu können, werden bevorzugt beispielsweise folgende Werte verwendet:
- Cyan 70 Linien/cm 32°
- Magenta 70 Linien/cm 60°
- Gelb 54 Linien/cm 45°
- Schwarz 100 Linien/cm 38°
Preferably, a grid of 60-120, preferably 70-90 lines / cm and an angle setting 30 ° -60 ° is selected.
In standard gravure printing, color images are usually printed in the basic colors cyan, magenta, yellow and black. If one were to produce all the colors with the same grid and cell angle, in the superimposed printing of the four basic colors an image would be produced which has a moire and can show a color drift over the production coating. To counteract these production-related phenomena, the following values are preferably used, for example:
- Cyan 70 lines / cm 32 °
- Magenta 70 lines / cm 60 °
- Yellow 54 lines / cm 45 °
- Black 100 lines / cm 38 °
Das auf diese Weise hergestellte Bild wird nun in einem entsprechenden Belichtungssystem auf einen vorbereiteten Zylinder belichtet.
Beispielsweise wird mit Hilfe eines Laser- oder Elektronenstrahls eine auf dem Zylinder, beispielsweise einem Tiefdruckzylinder mit einem Kern aus Eisenrohr mit Wandstärke 20 mm, und folgenden Schichten: 5-7µm Nickelschicht, 300µm Kupferschicht; vorhandene fotoempfindliche Schicht mit den entsprechenden Mustern, Formen, Linien, Buchstaben in Form des vorher definierten Rasters bebildert, entwickelt und geätzt. (oder Laserdirektverfahren von Dätwyler auf Zink) (oder neuartige Gravurverfahren Hell-Xtrem® , Ohio-Transscribe®)The image produced in this way is then exposed to a prepared cylinder in a corresponding exposure system.
For example, with the aid of a laser or electron beam on the cylinder, for example, a gravure cylinder with a core of iron tube with wall thickness 20 mm, and the following layers: 5-7μm nickel layer, 300μm copper layer; existing photosensitive layer with the corresponding patterns, shapes, lines, letters in the form of the previously defined grid imaged, developed and etched. (or Daetwyler's direct laser procedure on zinc) (or novel Hell-Xtrem®, Ohio-Transscribe® engraving procedures)
Die Beschichtung des Zylinders erfolgt auf übliche Weise mit einem Kunststoffübertragungsrad, oder durch Sprühen Walzen, Streichen, Tauchen, oder mittels eines Vorhangauftragsverfahrens, vorzugsweise in einer Schichtdicke von 2 - 10 µm mit einer handelsüblichen fotoempfindlichen Zusammensetzung beispielsweise LD 100, Fa. OHKA Kogyo Ltd.The coating of the cylinder is carried out in the usual way with a plastic transfer wheel, or by spraying rolling, brushing, dipping, or by means of a curtain coating process, preferably in one Layer thickness of 2 - 10 microns with a commercially available photosensitive composition such as LD 100, OHKA Kogyo Ltd.
Es sind aber auch alle anderen bekannten und handelsüblichen Zusammensetzungen geeignet. Anschließend wird der Zylinder mit einem Overcoat mit einer Schichtdicke von 1 - 5 µm versehen, beispielsweise mit OC-40 (Fa. OHKA Kogyo Ltd) oder mit einer analogen ähnlichen handelsüblichen Zusammensetzung.However, all other known and commercially available compositions are also suitable. Subsequently, the cylinder is provided with an overcoat with a layer thickness of 1 - 5 microns, for example with OC-40 (OHKA Kogyo Ltd) or with an analogous similar commercial composition.
Die Entwicklung erfolgt nach der Belichtung auf übliche Weise, beispielsweise kontaktlos mit Natriumcarbonat (0,5% Lösung), daran schließt üblicherweise ein Reinigungsvorgang mit Wasser an, worauf der Zylinder getrocknet wird.The development takes place after the exposure in the usual manner, for example, contactless with sodium carbonate (0.5% solution), this is usually followed by a cleaning process with water, after which the cylinder is dried.
Es sind aber auch alle anderen bekannten Photo-Entwicklungsverfahren möglich.But there are also all other known photo-development processes possible.
Femer kann der entsprechende Tiefdruckzylinder auch durch das Laserablationsverfahren bebildert werden. Dabei wird eine auf den Zylinder aufgetragene Absorptionsschicht direkt mit dem Laser behandelt und verdampft. Dadurch entsteht eine ätzbare Maske. Derartige Verfahren sind beispielsweise das Scheppers-Ohio Verfahren oder das Digilasverfahren der Fa. Dätwyler.Furthermore, the corresponding gravure cylinder can also be imaged by the laser ablation process. In this case, an applied to the cylinder absorption layer is treated directly with the laser and evaporated. This creates an etchable mask. Such methods are, for example, the Scheppers-Ohio method or the Digilas method of the company Dätwyler.
Durch ein anschließendes auf die Laser- bzw. Elektronenstrahlbebilderung folgendes konventionelles Ätzverfahren wird das durch die Laser- bzw. Elektronenstrahlbebilderung definierte Bild, Muster, Formen und dergleichen auf der Oberfläche des Zylinders wiedergespiegelt. Die Ätzung kann auf verschiedene Weise erfolgen, beispielsweise mittels einer Fe(III)chlorid-Lösung oder einer Cu(II)chlorid-Lösung gegebenenfalls unter Zusatz von HCl oder H2SO4. Der Ätzlösung können gegebenenfalls auch handelsübliche und bekannte Additive für den Flankenschutz beigegeben werden.Subsequent conventional etching process following the laser beam imaging reflects the image, patterns, shapes and the like defined by the laser beam imaging on the surface of the cylinder. The etching can be carried out in various ways, for example by means of a Fe (III) chloride solution or a Cu (II) chloride solution, optionally with the addition of HCl or H 2 SO 4 . If appropriate, commercially available and known additives for flank protection can also be added to the etching solution.
Die Dauer der Einwirkung des Ätzmittels ist abhängig vom verwendeten Ätzmittel und beträgt beispielsweise bei Verwendung einer Cu-Chloridlösung unter Zusatz einer Säure etwa 90 - 2400 sec.The duration of the action of the etchant depends on the etchant used and is for example when using a Cu-chloride solution with the addition of an acid about 90 - 2400 sec.
Es kann aber auch ein elektrochemisches Ätzverfahren verwendet werden.However, it is also possible to use an electrochemical etching method.
Der Zylinder wirkt nach dem Ätzvorgang stumpf und optisch dunkel. Durch eine Oberflächenbehandlung mit elektrolytischen bzw. chemischen Glänzen kann die Abformstruktur veredelt und eine brilliante Oberfläche erzeugt werden.The cylinder looks blunt and visually dark after the etching process. By means of a surface treatment with electrolytic or chemical glazes, the impression structure can be finished and a brilliant surface can be created.
Es sind aber auch alle bekannten Gravurverfahren anwendbar.But there are also all known engraving methods applicable.
Der gravierte, bebilderte oder oberflächenstrukturierte Tiefdruckzylinder kann nun im rotativen Tiefdruck Farbe auf einen geeigneten Bedruckstoff aufbringen.The engraved, imaged or surface-structured gravure cylinder can now apply color to a suitable substrate in rotary gravure printing.
Mit Hilfe eines handelsüblichen Scanners kann das Wasserzeichen wieder ausgelesen werden.
Durch Synchronisationselemente ist keine Vorzugsrichtung erforderlich.
Synchronisationselemente sind sichtbare oder unsichtbare Elemente im Druckbild, die mit dem Scanner ausgelesen werden können und die es der Auslesesoftware ermöglichen, etwaige Verzerrungen oder Drehungen im Druckbild zur Datenvorlage zu eliminieren, damit somit das Wasserzeichen ausgelesen werden kann.
Die Authentifizierung erfolgt mit dem entsprechenden Detektor durch geeignete Software.
Digitale Wasserzeichen können auf bestimmte Bildregionen beschränkt eingebracht werden. Auch die Einbringtiefe (Robustheit) kann eingestellt werden.With the help of a commercial scanner, the watermark can be read out again.
By synchronization elements no preferred direction is required.
Synchronization elements are visible or invisible elements in the print image which can be read out with the scanner and which enable the readout software to eliminate any distortions or rotations in the print image for data presentation so that the watermark can be read out.
The authentication takes place with the appropriate detector by suitable software.
Digital watermarks can be restricted to specific image regions. The insertion depth (robustness) can also be adjusted.
Das auf diese Weise hergestellte Bild wird nun in einem entsprechenden Belichtungssystem auf einen vorbereiteten Zylinder graviert oder oberflächenstrukturiert, vorzugsweise durch Lasergravur bzw. belichtet oder mittels ätzbarer Maske erzeugt.The image produced in this way is now engraved in a corresponding exposure system on a prepared cylinder or surface-structured, preferably by laser engraving or exposed or generated by means of etchable mask.
Laser- oder Elektronenstrahlgravur (z.B. Fa. Hell oder Dätwyler) zeichnen sich dadurch aus, dass die Oberfläche des Tiefdruckzylinders, die aus einer Kupferschicht oder Zinkschicht bestehen kann, direkt aus dem Datenbestand des Computers mechanisch entsprechend der Datenfilevorgabe bearbeitet wird. Es wird mit entsprechend leistungsstarken Laserstrahlen (100 - 5000 Watt) direkt das Material strukturiert. Die Strahldurchmesser bewegen sich dabei von 2 - 100µm, bevorzugt von 10 - 40µm. Die Laser- oder Elektronenstrahlquellen werden entsprechend dem darzustellenden Bild getaktet oder mit einem Shutter moduliert. Zur Fokusierung kommen entsprechende optische Hilfsmittel wie Linsen für Laser oder elektro-magnetische Felder für Elektronenstrahlen zum Einsatz. Ein Tiefdrucknäpfchen kann auch durch mehrere Strahleinschüsse erzeugt werden.Laser or electron beam engraving (for example Fa. Hell or Dätwyler) are distinguished by the fact that the surface of the gravure cylinder, which may consist of a copper layer or zinc layer, is processed directly from the data of the computer mechanically according to the data file specification. It is structured with correspondingly powerful laser beams (100 - 5000 watts) directly the material. The beam diameters are from 2 to 100 μm, preferably from 10 to 40 μm. The laser or electron beam sources are clocked according to the image to be displayed or modulated with a shutter. For focusing appropriate optical aids such as lenses for lasers or electro-magnetic fields for electron beams are used. A Tiefdrucknäpfchen can also be generated by multiple beam injections.
Beispielsweise wird mit Hilfe eines Laser- oder Elektronenstrahls eine auf dem Zylinder, beispielsweise einem Tiefdruckzylinder mit einem Kem aus Eisenrohr mit Wandstärke 20 mm, und folgenden Schichten: 5-7µm Nickelschicht, 300µm Kupferschicht; vorhandene fotoempfindliche Schicht mit den entsprechenden Mustern, Formen, Linien, Buchstaben in Form des vorher definierten Rasters bebildert, entwickelt und geätzt.For example, with the aid of a laser or electron beam on the cylinder, for example, a gravure cylinder with a core made of iron tube with wall thickness 20 mm, and the following layers: 5-7μm nickel layer, 300μm copper layer; existing photosensitive layer with the corresponding patterns, shapes, lines, letters in the form of the previously defined grid imaged, developed and etched.
Die Beschichtung des Zylinders erfolgt auf übliche Weise mit einem Kunststoffübertragungsrad, oder durch Sprühen Walzen, Streichen, Tauchen, oder mittels eines Vorhangauftragsverfahrens, vorzugsweise in einer Schichtdicke von 2 - 10 µm mit einer handelsüblichen fotoempfindlichen Zusammensetzung beispielsweise LD 100, Fa. OHKA Kogyo Ltd.The coating of the cylinder is carried out in the usual way with a Kunststoffübertragungsrad, or by spraying rolling, brushing, dipping, or by means of a Vorhangauftragsverfahrens, preferably in a layer thickness of 2-10 microns with a commercially available photosensitive composition, for example, LD 100, OHKA Kogyo Ltd.
Es sind aber auch alle anderen bekannten und handelsüblichen Zusammensetzungen geeignet. Anschließend wird der Zylinder mit einem Overcoat mit einer Schichtdicke von 1 - 5 µm versehen, beispielsweise mit OC-40 (Fa. OHKA Kogyo Ltd) oder mit einer analogen ähnlichen handelsüblichen Zusammensetzung.However, all other known and commercially available compositions are also suitable. Subsequently, the cylinder is provided with an overcoat with a layer thickness of 1-5 microns, for example, with OC-40 (OHKA Kogyo Ltd) or with an analogous commercial composition.
Die Entwicklung erfolgt nach der Belichtung auf übliche Weise, beispielsweise kontaktlos mit Natriumcarbonat (0,5% Lösung), daran schließt üblicherweise ein Reinigungsvorgang mit Wasser an, worauf der Zylinder getrocknet wird.The development takes place after the exposure in the usual manner, for example, contactless with sodium carbonate (0.5% solution), this is usually followed by a cleaning process with water, after which the cylinder is dried.
Es sind aber auch alle anderen bekannten Entwicklungsverfahren möglich.But there are also all other known development methods possible.
Die Erzeugung einer Ätzmaske kann auch durch direktes Entfemen der aufgebrachten Schutzschicht erzeugt werden. Dazu wird, wie vorher beschrieben, stattdessen ein schwarzer Schutzlack aufgebracht. Dies kann wie bei dem Photolack über sprühen, gießen etc erfolgen. Der Laser mit Leistung zwischen 1- 100 Watt (Strahldurchmesser 5 - 40µm) entfernt nun den Lack an den zu ätzenden Stellen, die entsprechend durch das Datenfile definiert sind und legt die zu ätzende Kupferoberfläche frei.The generation of an etching mask can also be produced by directly removing the applied protective layer. For this purpose, as previously described, applied instead a black protective lacquer. This can be done as in the case of the photoresist by spraying, pouring etc. The laser with power between 1-100 watts (beam diameter 5 - 40μm) now removes the paint on the areas to be etched, which are defined by the data file and exposes the copper surface to be etched.
Durch ein anschließendes auf die Laser- bzw. Elektronenstrahlbebilderung folgendes konventionelles Ätzverfahren wird das durch die Laser- bzw. Elektronenstrahlbebilderung definierte Bild, Muster, Formen und dergleichen auf der Oberfläche des Zylinders wiedergespiegelt. Die Ätzung kann auf verschiedene Weise erfolgen, beispielsweise mittels einer Fe(III)chlorid-Lösung oder einer Cu(II)chlorid-Lösung gegebenenfalls unter Zusatz von HCl oder H2SO4. Der Ätzlösung können gegebenenfalls auch handelsübliche und bekannte Additive für den Flankenschutz beigegeben werden.Subsequent conventional etching process following the laser beam imaging reflects the image, patterns, shapes and the like defined by the laser beam imaging on the surface of the cylinder. The etching can be carried out in various ways, for example by means of a Fe (III) chloride solution or a Cu (II) chloride solution, optionally with the addition of HCl or H 2 SO 4 . If appropriate, commercially available and known additives for flank protection can also be added to the etching solution.
Die Dauer der Einwirkung des Ätzmittels ist abhängig vom verwendeten Ätzmittel und beträgt beispielsweise bei Verwendung einer Cu-Chloridlösung unter Zusatz einer Säure etwa 90 - 2400 sec.The duration of the action of the etchant depends on the etchant used and is for example when using a Cu-chloride solution with the addition of an acid about 90 - 2400 sec.
Es kann aber auch ein elektrochemisches Ätzverfahren verwendet werden.However, it is also possible to use an electrochemical etching method.
Der Zylinder wirkt nach dem Ätzvorgang stumpf und optisch dunkel. Eine Oberflächenbehandlung mit elektrolytischen bzw. chemischen Glänzen veredelt die Abformstruktur und erzeugt eine brillante Oberfläche.The cylinder looks blunt and visually dark after the etching process. A surface treatment with electrolytic or chemical shining refines the impression structure and produces a brilliant surface.
Die erfindungsgemäßen Tiefdruckformen werden zu Herstellung unsichtbarer Sicherheitsmerkmale, die nur mit Hilfe eines entsprechenden Detektors (Linse, Scanner und dergleichen) auf Trägersubstraten verwendet.The intaglio printing plates according to the invention are used for producing invisible security features, which are only used with the aid of a corresponding detector (lens, scanner and the like) on carrier substrates.
Als Trägersubstrat kommen beispielsweise Trägerfolien vorzugsweise flexible Kunststofffolien, beispielsweise aus PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in Frage. Die Trägerfolien weisen vorzugsweise eine Dicke von 5 - 700 µm, bevorzugt 8 - 200 µm, besonders bevorzugt 12 - 50 µm auf.For example, carrier foils are preferably flexible plastic foils, for example, PI, PP, MOPP, PE, PPS, PEEK, PEK, PEI, PSU, PAEK, LCP, PEN, PBT, PET, PA, PC, COC, POM, ABS, PVC in question. The carrier films preferably have a thickness of 5 to 700 .mu.m, preferably 8 to 200 .mu.m, more preferably 12 to 50 .mu.m.
Femer können als Trägersubstrat auch Metallfolien, beispielsweise Al-, Cu-, Sn-, Ni-, Fe- oder Edelstahlfolien mit einer Dicke von 5 - 200 µm, vorzugsweise 10 bis 80 µm, besonders bevorzugt 20 - 50 µm dienen. Die Folien können auch oberflächenbehandelt, beschichtet oder kaschiert beispielsweise mit Kunststoffen oder lackiert sein.Furthermore, metal foils, for example Al, Cu, Sn, Ni, Fe or stainless steel foils having a thickness of 5-200 μm, preferably 10 to 80 μm, particularly preferably 20-50 μm, may serve as the carrier substrate. The films can also be surface-treated, coated or laminated, for example, with plastics or painted.
Femer können als Trägersubstrate auch Papier oder Verbunde mit Papier, beispielsweise Verbunde mit Kunststoffen mit einem Flächengewicht von 20 - 500 g/m2, vorzugsweise 40 - 200 g/m2. verwendet werden.Furthermore, paper or composites with paper, for example composites with plastics having a basis weight of 20 to 500 g / m 2 , preferably 40 to 200 g / m 2, may also be used as the carrier substrates. be used.
Ferner können als Trägersubstrate Gewebe oder Vliese, wie Endlosfaservliese, Stapelfaservliese und dergleichen, die gegebenenfalls vemadelt oder kalandriert sein können, verwendet werden. Vorzugsweise bestehen solche Gewebe oder Vliese aus Kunststoffen, wie PP, PET, PA, PPS und dergleichen, es können aber auch Gewebe oder Vliese aus natürlichen, gegebenenfalls behandelten Fasern, wie Viskosefaservliese eingesetzt werden. Die eingesetzten Gewebe oder Vliese weisen ein Flächengewicht von etwa 20 g/m2 bis 500 g/m2 auf. Gegebenfalls können diese Gewebe oder Vliese oberflächenbehandelt sein.Further, as carrier substrates, woven or nonwoven fabrics, such as continuous fiber webs, staple fiber webs and the like, which may be needled or calendered, may be used. Preferably such fabrics or webs of plastics, such as PP, PET, PA, PPS and the like, but it can also be woven or nonwovens of natural, optionally treated fibers, such as viscose fiber webs are used. The fabrics or nonwovens used have a basis weight of about 20 g / m 2 up to 500 g / m 2 . Optionally, these fabrics or nonwovens may be surface treated.
Die mittels der erfindungsgemäßen rotativen Tiefdruckformen hergestellten bedruckten Trägersubstrate sind gegebenenfalls nach entsprechender Konfektionierung daher als Sicherheitsmerkmale in Datenträgern, insbesondere Wertdokumenten wie Ausweisen, Karten, Banknoten oder Etiketten, Siegeln und dergleichen geeignet, aber auch als Verpackungsmaterial beispielsweise in der pharmazeutischen, der Elektronik- und/oder Lebensmittelindustrie, beispielsweise in Form Blisterfolien, Faltschachteln, Abdeckungen, Folienverpackungen und dergleichen geeignet.The printed carrier substrates produced by means of the rotative intaglio printing plates according to the invention are therefore, if appropriate, suitable as security features in data carriers, in particular value documents such as identity cards, cards, banknotes or labels, seals and the like, but also as packaging material, for example in the pharmaceutical, electronic and / or or food industry, for example in the form of blister films, cartons, covers, film packaging and the like.
Für die Anwendung als Sicherheitsmerkmale werden die Substrate bzw. - wie 048 Folienmaterialien bevorzugt in Streifen oder Fäden oder Patches geschnitten, wobei die Breite der Streifen oder Fäden vorzugsweise 0,05 - 10 mm betragen kann und die Patches vorzugsweise mittlere Breiten bzw. Längen von 2-30 mm.For use as security features, the substrates or 048 film materials are preferably cut into strips or threads or patches, the width of the strips or threads preferably being 0.05-10 mm and the patches preferably having average widths or lengths of 2 -30 mm.
Für die Anwendung in oder auf Verpackungen wird das Folienmaterial bevorzugt in Streifen, Bänder, Fäden oder Patches geschnitten, wobei die Breite der der Fäden, Streifen bzw. Bänder vorzugsweise 0,05 - 50 mm beträgt und die Patches vorzugsweise mittlere Breiten und Längen von 2-30 mm aufweisen.For use in or on packaging, the film material is preferably cut into strips, tapes, threads or patches, wherein the width of the threads, strips or tapes is preferably 0.05-50 mm and the patches are preferably average widths and lengths of 2 -30 mm.
Diese Druckverfahren können auch direkt auf die Primarverpackungen wie Karton, Folien, Aluminium, Blister etc. aufgedruckt werden.These printing methods can also be printed directly onto the primary packaging such as cardboard, foils, aluminum, blisters, etc.
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DE200410033664 DE102004033664A1 (en) | 2004-07-12 | 2004-07-12 | Rotary rotogravure molds for the production of security features, processes for their production and products produced using these gravure molds and their use |
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US7812935B2 (en) | 2005-12-23 | 2010-10-12 | Ingenia Holdings Limited | Optical authentication |
US7853792B2 (en) | 2004-03-12 | 2010-12-14 | Ingenia Holdings Limited | Authenticity verification methods, products and apparatuses |
US8078875B2 (en) | 2005-07-27 | 2011-12-13 | Ingenia Holdings Limited | Verification of authenticity |
US8103046B2 (en) | 2004-08-13 | 2012-01-24 | Ingenia Holdings Limited | Authenticity verification of articles using a database |
US20120192738A1 (en) * | 2011-01-31 | 2012-08-02 | Sanger Kurt M | Embedding data into solid areas, text or line work |
WO2012106128A1 (en) * | 2011-01-31 | 2012-08-09 | Eastman Kodak Company | Embedding data printed in solid areas |
US8615475B2 (en) | 2008-12-19 | 2013-12-24 | Ingenia Holdings Limited | Self-calibration |
US8699088B2 (en) | 2004-03-12 | 2014-04-15 | Ingenia Holdings Limited | Methods and apparatuses for creating authenticatable printed articles and subsequently verifying them |
US8892556B2 (en) | 2009-11-10 | 2014-11-18 | Ingenia Holdings Limited | Optimisation |
US9818249B1 (en) | 2002-09-04 | 2017-11-14 | Copilot Ventures Fund Iii Llc | Authentication method and system |
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EP0981113A2 (en) * | 1998-07-31 | 2000-02-23 | Digimarc Corporation | Digital watermarking and methods for security documents |
Cited By (21)
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US9818249B1 (en) | 2002-09-04 | 2017-11-14 | Copilot Ventures Fund Iii Llc | Authentication method and system |
US8757493B2 (en) | 2004-03-12 | 2014-06-24 | Ingenia Holdings Limited | System and method for article authentication using encoded signatures |
US8749386B2 (en) | 2004-03-12 | 2014-06-10 | Ingenia Holdings Limited | System and method for article authentication using signatures |
US7853792B2 (en) | 2004-03-12 | 2010-12-14 | Ingenia Holdings Limited | Authenticity verification methods, products and apparatuses |
US9019567B2 (en) | 2004-03-12 | 2015-04-28 | Ingenia Holdings Limited | Methods and apparatuses for creating authenticatable printed articles and subsequently verifying them |
US8502668B2 (en) | 2004-03-12 | 2013-08-06 | Ingenia Holdings Limited | System and method for article authentication using blanket illumination |
US8766800B2 (en) | 2004-03-12 | 2014-07-01 | Ingenia Holdings Limited | Authenticity verification methods, products, and apparatuses |
US8699088B2 (en) | 2004-03-12 | 2014-04-15 | Ingenia Holdings Limited | Methods and apparatuses for creating authenticatable printed articles and subsequently verifying them |
US8421625B2 (en) | 2004-03-12 | 2013-04-16 | Ingenia Holdings Limited | System and method for article authentication using thumbnail signatures |
US8896885B2 (en) | 2004-03-12 | 2014-11-25 | Ingenia Holdings Limited | Creating authenticatable printed articles and subsequently verifying them based on scattered light caused by surface structure |
GB2444139B (en) * | 2004-08-13 | 2008-11-12 | Ingenia Technology Ltd | Authenticity verification methods products and apparatuses |
GB2444139A (en) * | 2004-08-13 | 2008-05-28 | Ingenia Technology Ltd | Authenticity verification |
US8103046B2 (en) | 2004-08-13 | 2012-01-24 | Ingenia Holdings Limited | Authenticity verification of articles using a database |
US8078875B2 (en) | 2005-07-27 | 2011-12-13 | Ingenia Holdings Limited | Verification of authenticity |
US7812935B2 (en) | 2005-12-23 | 2010-10-12 | Ingenia Holdings Limited | Optical authentication |
US8497983B2 (en) | 2005-12-23 | 2013-07-30 | Ingenia Holdings Limited | Optical authentication |
US8615475B2 (en) | 2008-12-19 | 2013-12-24 | Ingenia Holdings Limited | Self-calibration |
US8892556B2 (en) | 2009-11-10 | 2014-11-18 | Ingenia Holdings Limited | Optimisation |
CN103338938A (en) * | 2011-01-31 | 2013-10-02 | 伊斯曼柯达公司 | Embedding data printed in solid areas |
WO2012106128A1 (en) * | 2011-01-31 | 2012-08-09 | Eastman Kodak Company | Embedding data printed in solid areas |
US20120192738A1 (en) * | 2011-01-31 | 2012-08-02 | Sanger Kurt M | Embedding data into solid areas, text or line work |
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DE102004033664A1 (en) | 2006-02-16 |
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