EP2818326A1 - Safety substrate - Google Patents
Safety substrate Download PDFInfo
- Publication number
- EP2818326A1 EP2818326A1 EP14002147.8A EP14002147A EP2818326A1 EP 2818326 A1 EP2818326 A1 EP 2818326A1 EP 14002147 A EP14002147 A EP 14002147A EP 2818326 A1 EP2818326 A1 EP 2818326A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- security
- rutile
- anatase
- substrate
- substrate according
- 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.)
- Granted
Links
- 239000000758 substrate Substances 0.000 title claims abstract description 82
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 222
- 239000000203 mixture Substances 0.000 claims abstract description 22
- 239000011324 bead Substances 0.000 claims description 64
- 238000000034 method Methods 0.000 claims description 16
- 238000001228 spectrum Methods 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229920000742 Cotton Polymers 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000012876 carrier material Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 239000000123 paper Substances 0.000 description 36
- 239000000976 ink Substances 0.000 description 21
- 239000010408 film Substances 0.000 description 20
- 238000007639 printing Methods 0.000 description 20
- 238000000576 coating method Methods 0.000 description 19
- 239000011248 coating agent Substances 0.000 description 13
- 239000004408 titanium dioxide Substances 0.000 description 13
- 238000007650 screen-printing Methods 0.000 description 7
- 238000012546 transfer Methods 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000011127 biaxially oriented polypropylene Substances 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229920006378 biaxially oriented polypropylene Polymers 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 229920006254 polymer film Polymers 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- 238000000411 transmission spectrum Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 229920000307 polymer substrate Polymers 0.000 description 3
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000004922 lacquer Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229920000426 Microplastic Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 239000013039 cover film Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000001429 visible spectrum Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
- B42D25/387—Special inks absorbing or reflecting ultraviolet light
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/121—Apparatus characterised by sensor details
-
- 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
- B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
- B42D25/378—Special inks
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/06—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency using wave or particle radiation
- G07D7/12—Visible light, infrared or ultraviolet radiation
- G07D7/1205—Testing spectral properties
-
- B42D2033/20—
Definitions
- the present invention relates to a security substrate for security papers and documents of value, such as banknotes, passports, identity documents or the like, having at least a first subarea and at least a second subarea, the first subarea having hollow spheres and no mixture of rutile and anatase and the second subarea rutile and / or or anatase, but does not include hollow globules.
- the invention further relates to a value document comprising a security substrate, an associated production method and a method for checking the authenticity.
- security substrate is understood below to mean a substrate which is used as security paper.
- a security paper is equipped with security elements, such as watermarks, security thread, hologram patch, etc., but not yet fit and intermediate in the production of the value document.
- security substrate is understood as a security element with which security papers, value documents, etc. are equipped.
- value document is meant the product that can be run, that is, e.g. the printed banknote.
- Value documents such as banknotes, shares, bonds, certificates, vouchers, checks, as well as other forgery-prone securities, such as passports, cards or other identity documents, are equipped with various security elements to increase their security against counterfeiting.
- Data carriers such as valuables or identity documents, but also other valuables, such as branded articles, are often provided with security features for security purposes, which allow a verification of the authenticity of the data carrier and at the same time as protection against unauthorized reproduction serve.
- the security features can be present, for example, in the form of separately produced security elements which are inserted or applied to the data carriers, for example in the form of a security thread embedded in a banknote, a covering sheet for a banknote with a hole, an applied security strip or a self-supporting transfer element that is in accordance with his Production is applied to a document of value.
- Some of the security features are also printed directly on the value document to be protected or incorporated into the volume of the value document substrate.
- the security features can be visible to the naked eye or even be machine-readable only by means of appropriate sensors.
- the object of the present invention is to further improve security substrates for security papers and documents of value of the type mentioned above with regard to their security against imitation and to produce them cost-effectively.
- the substrate comprises at least a first portion and at least a second portion, wherein the first portion comprises hollow beads and no mixture of rutile and anatase and the second portion of rutile and / or anatase, but no hollow beads ,
- the first portion comprises hollow beads, but no anatase and no rutile
- the second portion comprises a mixture of rutile and anatase, but no hollow beads.
- the first portion comprises hollow beads and neither anatase nor rutile and the second portion comprises anatase and neither rutile nor hollow beads.
- the first subregion comprises hollow beads and neither anatase nor rutile
- the second subregion comprises rutile and neither anatase nor hollow beads.
- the substrate comprises at least a third portion which comprises rutile and / or anatase and optionally hollow beads and which differs from the first and second portions with respect to the presence of rutile, anatase and the hollow beads. This means that the first, second and third subareas are distinguishable with respect to anatase, rutile and the hollow beads.
- the first portion comprises hollow beads but no rutile and no anatase
- the second portion comprises rutile, but no anatase and no hollow beads
- the third portion comprises a mixture of rutile and anatase, but no hollow beads.
- the first portion comprises hollow beads, but no rutile and no anatase
- the second portion comprises anatase, but no rutile and no hollow beads
- the third portion comprises a mixture of rutile and anatase, but no hollow beads.
- the first portion comprises a mixture of hollow beads and rutile, but no anatase
- the second portion comprises rutile, but no anatase and no hollow beads
- the third portion comprises a mixture of hollow beads and anatase but no rutile.
- the first portion comprises a mixture of hollow beads and rutile, but no anatase
- the second portion comprises anatase, but no rutile and no hollow beads
- the third portion comprises a mixture of hollow beads and anatase, but no rutile.
- Rutile, anatase and the hollow spherules are characterized by the fact that they have opaque properties, have different transmission / remission in the UV range and in the visible region of the spectrum have almost no body color / color.
- the hollow spheres are plastic-based hollow spheres which scatter light and are therefore suitable as an opaque coating. Particularly suitable are polystyrene (PES) hollow beads or sintered polytetrafluoroethylene (PTFE) beads.
- PES polystyrene
- PTFE sintered polytetrafluoroethylene
- Anatase and rutile are modifications of titanium dioxide. Both modifications are used according to the invention as pigments.
- Anatase, rutile and the hollow spheres can be applied to the substrate in the form of coatings or printing inks or in a transfer process.
- the coatings are preferably ink receiving layers. These are used in particular for polymer substrates. Particularly preferably, the subregions of these ink-receiving layers according to the invention are indistinguishable from the naked eye.
- the hollow spheres are incorporated in printing inks, more preferably in printing inks, which are used with high paint.
- printing inks are screen, gravure or flexographic inks.
- the subregions of a coating based on hollow spherules can subsequently be partially transparent by means of thermal action.
- the thermal effect can be based on contact-based systems or contactless systems.
- Contact-based systems can be tempered stamps (also tempered digit printing units or high-pressure plates, for example).
- the temperature is preferred in the melting range of the polymer taking into account the time, pressure and heat transfer value of the coating.
- Contactless systems can be air jet nozzles in combination with a heating element or laser.
- a laser it must be ensured that the laser radiation does not reflect, but is absorbed as close as possible to the hollow spheres. This can be achieved e.g. by means of IR absorbers, which are designed for the wavelength of a Nd: Yag laser (1065 nm).
- the IR absorber can be introduced in the hollow beads enveloping binder, in the capsule wall and / or in the hollow body.
- the thermal transparency can be used as a human feature for subsequent personalization.
- Rutile and anatase are preferably mixed in bright colors.
- the partial regions according to the invention can either be indistinguishable in the visible spectrum to the naked eye, i. have the same color, or have different shades depending on the subject. If the printing inks have the same hue, it is possible to realize a UV cut when printing on stitches.
- the colors or coatings used may be UV-drying, water-based, solvent-based or combinations of the aforementioned variants.
- the proportion of anatase, rutile or the hollow beads is between 5 wt.% To 70 wt.% In the non-dried coating.
- the coating thickness per side can be between 0.5 ⁇ m to 30 ⁇ m (dry), depending on the coating method used and the number of individual layers.
- the coating thickness is preferably between 1 ⁇ m and 20 ⁇ m per side (dry).
- the method for producing a security substrate according to the invention comprises providing a carrier material which is provided with at least a first and at least a second subregion, wherein the first subregion comprises hollow beads and no mixture of rutile and anatase and the second subregion rutile and / or anatase but no hollow beads includes.
- the security substrate is additionally provided with at least a third portion, which differs from the first and second portion with respect to the presence of rutile, anatase and the hollow beads.
- Suitable carrier materials are all the substrates described in the preceding and following, conceivable for the security substrates, such as e.g. Polymer films, papers and combinations thereof.
- the support material can also be provided according to the invention with rutile, anatase or the hollow beads in the production thereof.
- anatase or rutile to the plastic granules to be processed.
- anatase, rutile or the hollow spheres can be introduced into the pulp.
- the corresponding paper webs have formed in the papermaking process, they contain the prescribed titanium dioxide modification or hollow spheres.
- the layers can be equipped differently. Between the paper layers may possibly be additionally present a plastic film.
- Suitable printing methods for producing the subregions are offset, letterpress, flexo, gravure, intaglio, inkjet printing and toner-based printing methods. Preference is given to screen printing, gravure printing and flexographic printing.
- the proportion of titanium dioxide or hollow spheres can be up to 70% with good chemical and physical resistances and good printability. Due to the high specific gravity of titanium dioxide at about 4 g / cm 3 , the proportion of transferred titanium dioxide is from 2.8 g / m 2 to 4.2 g / m 2 for a color layer of from 1 ⁇ m to 1.5 ⁇ m.
- the proportion of titanium dioxide or the hollow beads in the color is reduced.
- this leads to a reduction to titanium dioxide or hollow spheres of at least 5 wt.% To 10 wt.%, Based on the mass of titanium dioxide.
- the proportion of titanium dioxide or the hollow beads may be at a similar level to offset inks.
- the transferred layer thickness depending on the engraving depth of the printing plate between 1 .mu.m to 30 .mu.m, so that the anchored on the substrate titanium dioxide pigment or Hohlkugelchenkonzentration is significantly higher.
- the coatings and printing inks may comprise, in addition to rutile, anatase or hollow globules, other security features, for example magnetic pigments, luminescent substances, substances with optically variable properties, such as liquid crystals or thin-film pigments, substances with IR-readable properties, etc.
- the feature can also be produced on the basis of transfer processes, in which lacquer layers based on titanium dioxide or the hollow beads can be applied by means of hot or cold embossing transfer processes. Furthermore, transfer films having such properties can also be applied.
- the lacquer layers or the foil element can have the at least one or the at least first and second partial area or the at least first, second and third partial area.
- the subregions lie on the surface of the substrate and / or in the volume of the substrate.
- the subregions are on the surface of the substrate.
- the partial regions can be present on the front and / or rear side of the substrate.
- the partial regions can be present next to one another (joint to joint or at a distance), one above the other or partially overlapping.
- the sections are adjacent.
- the sections can also merge into each other.
- the layer thickness and / or surface coverage of one subregion may decrease and that of the other subregion increase.
- the subregions are incorporated in the volume of the substrate. Furthermore, it is possible that, for example, one partial region is present on the surface of the substrate and another partial region is present in the volume of the substrate.
- a partial area can in particular be configured over the entire surface or as a motif.
- the term "motif" is to be understood in particular as a pattern or a picture.
- the motif may also convey information by e.g. a character, a string, an encoding (e.g., bar code), or image information.
- the subregion is present in the volume of the substrate, it is possible to design three-dimensional motifs.
- the partial regions may be present in or on different layers.
- the size and dimension of the subregions depends entirely on the desired motifs and the sensors used to measure the feature. This is known to the person skilled in the art.
- Suitable materials are paper, plastic or combinations thereof.
- the substrate can be used both as security element, as security paper or as value document.
- security papers for banknotes are typically made from fibers of annual plants, especially cotton fibers.
- papers which partly comprise synthetic fibers, preferably polyamide fibers or polyester fibers.
- the fiber content of the papers may consist entirely of plastic fibers.
- a polymer film which has a suitable ink-accepting layer is particularly suitable as a value-document substrate.
- the polymer film preferably consists of biaxially oriented polypropylene (BOPP).
- a cotton paper is used as the substrate.
- the basis weight of the substrate varies depending on the application form. Usual basis weights are in the range of 50 g / m 2 to 100 g / m 2 , preferably in the range 60 g / m 2 to 90 g / m 2 .
- the substrate may be single-layered or multi-layered.
- the individual layers may consist of the same or different materials.
- one layer may be a pure cotton paper while another layer may be plastic fibers.
- multilayer paper / film composites such as a paper / film / paper composite or a film / paper / film composite.
- the substrate may further be provided with conventional security elements, e.g. Windows, security threads, patches, etc. These security elements can be seen as a security substrate in the context of the invention.
- the security substrate according to the invention can also advantageously be used for card-based value documents (for example credit cards, ID documents, such as passports, driving licenses, identity cards, etc.).
- card-based value documents for example credit cards, ID documents, such as passports, driving licenses, identity cards, etc.
- Card-based value documents usually consist of a multilayered film structure.
- the films are usually laminated at high temperature and pressure to a card body having the necessary resistances.
- the outer cover films and films covering the inner core are preferable to use transparent films for the outer cover films and films covering the inner core.
- the outer covering film is preferably printed, so that the printing layer is protected by the laminated transparent cover sheet from physical influences, such as scratching, etc.
- the opaque films usually contain titanium dioxide as a covering component in the polymer (eg PVC, PA, polycarbonate, etc.).
- the front cover sheet contains anatase or rutile, and the back cover sheet is printed with a hollow globule of ink. The detection takes place in reflection from the respective side.
- a cover sheet (front and / or back) is composed of at least two strips, each printed with a strip containing hollow globules of color and comprising a rutile or anatase.
- the rutile or anatase-containing strips may alternate with the strips comprising the hollow beads.
- One of the cover sheets contains rutile or anatase and at least one recess (e.g., punched out), the other cover sheet comprises hollow beads. If the measurement is made from the side of the rutile- or anatase-containing cover film, the sensor recognizes the hollow spheres in the window area and the rutile or anatase in the remaining area.
- At least one of the films in the card body is coated with at least an anatase- or rutile-containing and hollow-globule-containing printing ink printed on one side of the card body, wherein the inks preferably have a visually indistinguishable hue.
- card-based value documents of all kinds i. exclusively based on polymer layers, but also paper-based and combinations of paper with polymer layers possible.
- the method for testing, in particular the authenticity, of a security substrate according to the invention comprises illuminating with ultraviolet light and evaluating the transmitted or reflected by the security substrate ultraviolet light for checking the authenticity of the security substrate, wherein the measured transmission or reflection spectrum of the hollow beads and Anatase and / or rutile - if available - is assessed. Since the hollow spheres and titanium modifications anatase and rutile differ in the UV range, it is possible to realize a visually unrecognizable but machine-readable feature.
- ultraviolet light refers particularly to light having a wavelength in a range of 235 nm to 380 nm.
- a UV transmission sensor as in WO / 03054809 A2 described, or a UV-reflectance sensor, as in DE 10160 580 A1 described, are used.
- the disclosure of the WO / 03054809 A2 and the DE 101 60 580 A1 are included in the disclosure of the present application.
- the sensitivity of the sensor is 370 nm with a half width of 70 nm (defined over the filter used).
- the detection of the UV feature can be done both in transmission, in reflection and in combination.
- the sensor can be based on a line or matrix camera for image acquisition.
- the security substrate according to the invention can be used as a security element, in particular as a security element for a security paper, value document or the like.
- a security paper and a value document with a security substrate according to the invention are provided.
- the security substrate may in particular be designed as a security thread, tear-open thread, security tape, security strip, patch or label for application to a security paper, value document or the like.
- the security substrate can span transparent areas or recesses.
- the security substrate may also be the security paper itself.
- security paper is understood here to mean, in particular, the precursor which is not yet ready for use as a value document which, in addition to the security substrate according to the invention, may also have further authenticity features (such as, for example, luminescent substances provided in the volume).
- Value documents are here understood, on the one hand, documents produced from security papers.
- value documents can also be other documents and articles that can be provided with the security substrate according to the invention, so that the value documents have non-copyable authenticity features, whereby an authenticity check is possible and at the same time unwanted copying is prevented.
- Anatase, rutile and the hollow spheres in the use of the present invention are readily available and processable, yet inexpensive security features that are readily detectable by machine but are not immediately discernible to the naked eye.
- Fig.1 shows a polymer banknote 1 with a covering coating as ink-accepting layer on the surface of the per se transparent polymer film based on BOPP with a thickness of 100 .mu.m, wherein a first portion 2 with a coating based on hollow beads (containing no rutile or anatase) and a second portion 3 based on rutile (no anatase or hollow beads containing) is coated. The area 4 is uncoated, so that at this point the transparent substrate can be seen. Anatase can also be used instead of rutile.
- Fig. 2 shows an enlarged sectional view of the bill along the line AA in Fig.1 ,
- the substrate 5 is coated both on the front and on the back with a first portion 2 (hollow beads containing) and a second portion 3 (containing rutile).
- first portion 2 high beads containing
- second portion 3 containing rutile
- the subregions of the invention may also be present only on the front or back.
- the first and second subregions are each arranged congruently on the front and rear side.
- the subregions can be arranged on the front and / or rear as desired, as long as the rutile and hollow bead-containing portions can be measured.
- the respective subregions can also consist of several layers, ie several hollow-globule-containing or rutile-containing layers are applied one above the other.
- improved machine readability is achieved by increasing the respective amount of titanium dioxide or hollow beads per metered area.
- the opacity can also be controlled in a very targeted manner.
- a so-called pseudo-watermark ie different light / dark areas, which can be recognized by the naked eye, thus arises.
- a recognizable with the naked eye feature (pseudo watermark) with the invention only machine-readable feature is connected, resulting in a much better protection against counterfeiting.
- Fig. 3 shows a further embodiment of a banknote with sections of the invention in supervision.
- the hollow bead-containing portions 2 and rutile-containing portions 3 show in plan a strip-shaped arrangement, as the sectional views in Fig. 4a and Fig. 4b show, can be realized in different ways. Both in variant Fig. 4a as well as in variant Fig. 4b it is possible to replace rutile with anatase or to use a mixture of rutile and anatase. In the variants shown, a classic 1D barcode was realized. Of course, it is also possible to realize a 2D barcode, in a multilayer structure also a 3D barcode or other machine-readable codes. The codes can occupy both the entire surface of the banknote or generally the value document or even cover only sections. It is conceivable, for example, to introduce the code only in - not shown - windows or run in edge areas. The code is only machine-readable and not visible to the naked eye. The different parts appear to the eye as a uniform surface.
- Fig. 4a shows a sectional view of the banknote in Fig. 3 along the line CC.
- the banknote substrate in this embodiment is a composite of paper and foil.
- the core of the composite consists of conventional cotton paper 5, which is coated with two very thin films 6, 7.
- the films may be extruded or laminated onto the paper.
- the partial areas according to the invention serve as ink receiving layers and cover the entire surface of the substrate.
- On a surface of a film is the entire surface of the first hollow bead-containing portion 2 printed.
- On the hollow bead-containing portion of the second rutile-containing portion 3 is strip-shaped - or according to the relevant requirements another coding - printed.
- the measurement is preferably carried out from the side facing the rutile-containing coating. Since rutile absorbs in the longer-wave UV range, the directly underlying hollow spheres are virtually invisible when measuring the rutile and thus do not interfere.
- Fig. 4b shows an alternative sectional view of the banknote in Fig. 3 along the line CC. It is the foil-paper-foil construction Fig. 4a , The hollow bead-containing portions 2 and the rutile-containing portions 3 are not superimposed in this embodiment, but printed side by side. Preferably, these are arranged in register.
- the codings can occupy only a small area on the banknote, so do not necessarily cover the entire area.
- the coding can also be integrated into a motif according to the invention.
- a small-format coding of partial areas according to the invention can be integrated into a large-area motif of partial areas according to the invention.
- Fig. 5 shows a sectional view of a bill of transparent polymer substrate 5 with the first partial areas 2 according to the invention, the second Partial regions 3 and the third partial regions 8.
- the first partial regions 2 comprise hollow beads, but no anatase and no rutile
- the second, partial regions 3 comprise rutile, but no hollow beads and no anatase
- the third partial regions 8 comprise anatase but no rutile and none hollow spheres.
- Fig. 6 shows the transmission spectrum of the hollow beads 9, anatase 10 and rutile 11.
- a transparent BOPP film was measured which was printed with respect to the anatase spectrum with a screen printing ink based on 15% by weight of anatase and 85% by weight of screen printing agent 3850 from Giesecke & Devrient GmbH.
- the front was printed with two and the back with a screen printing layer (each about 10 microns wet film thickness).
- a transparent BOPP film was printed with a screen printing ink based on 15% by weight of rutile and 85% by weight of screen printing agent 3850 from Giesecke & Devrient GmbH.
- the front was printed with two and the back with a screen printing layer (each about 10 microns wet film thickness).
- the measurements were carried out on the Perkin Elmer UV-VIS IR spectrometer 900 with integrating sphere.
- a white standard was attached to the outside of the specimen holder, a measuring aperture (black cardboard with a circular 5 mm opening) was fixed at the light beam entrance area of the integrating sphere and the sample to be tested was fixed.
- the measurement against air was used.
- the spectrum of the anatase coating is shifted by about 30 nm to lower wavelengths compared to the spectrum of the rutile coating.
- the spectrum of the hollow bead overprint is again shifted by about 70 nm to lower wavelengths compared to the spectrum of the anatase coating.
- the spectra are therefore easy to differentiate metrologically and easy to evaluate.
- the content of anatase or rutile in the cotton paper is between 2% by weight and 4% by weight, based on the paper weight.
Abstract
Es wird ein Sicherheitssubstrat für Sicherheitspapiere, Wertdokumente und dergleichen mit mindestens einem ersten und mindestens einem zweiten Teilbereich bereitgestellt, wobei der erste Teilbereich Hohlkügelchen und keine Mischung aus Rutil und Anatas und der zweite Teilbereich Rutil und/ oder Anatas, aber keine Hohlkügelchen umfasst.A security substrate for security papers, documents of value and the like having at least a first and at least a second subarea is provided, wherein the first subarea comprises hollow spheres and no mixture of rutile and anatase and the second subarea rutile and / or anatase, but no hollow spheres.
Description
Die vorliegende Erfindung betrifft ein Sicherheitssubstrat für Sicherheitspapiere und Wertdokumente, wie Banknoten, Pässe, Ausweisdokumente oder dergleichen, mit mindestens einem ersten Teilbereich und mindestens einem zweiten Teilbereich, wobei der erste Teilbereich Hohlkügelchen und keine Mischung aus Rutil und Anatas und der zweite Teilbereich Rutil und/ oder Anatas, aber keine Hohlkügelchen umfasst.The present invention relates to a security substrate for security papers and documents of value, such as banknotes, passports, identity documents or the like, having at least a first subarea and at least a second subarea, the first subarea having hollow spheres and no mixture of rutile and anatase and the second subarea rutile and / or or anatase, but does not include hollow globules.
Die Erfindung betrifft ferner ein Wertdokument, umfassend ein Sicherheitssubstrat, ein zugehöriges Herstellungsverfahren und ein Verfahren zur Prüfung der Echtheit.The invention further relates to a value document comprising a security substrate, an associated production method and a method for checking the authenticity.
Unter Sicherheitssubstrat wird nachfolgend zum einen ein Substrat verstanden, das als Sicherheitspapier Verwendung findet. Ein Sicherheitspapier ist mit Sicherheitselementen, wie Wasserzeichen, Sicherheitsfaden, Hologrammpatch usw., ausgestattet, aber noch nicht umlauffähig und Zwischenprodukt bei der Herstellung des Wertdokumentes. Zum anderen wird unter Sicherheitssubstrat ein Sicherheitselement verstanden, mit dem Sicherheitspapiere, Wertdokumente etc. ausgestattet sind. Unter Wertdokument wird das umlauffähige Produkt verstanden, also z.B. die bedruckte Banknote.The term security substrate is understood below to mean a substrate which is used as security paper. A security paper is equipped with security elements, such as watermarks, security thread, hologram patch, etc., but not yet fit and intermediate in the production of the value document. On the other hand, security substrate is understood as a security element with which security papers, value documents, etc. are equipped. By value document is meant the product that can be run, that is, e.g. the printed banknote.
Wertdokumente, wie beispielsweise Banknoten Aktien, Anleihen, Urkunden, Gutscheine, Schecks, aber auch andere fälschungsgefährdete Papiere, wie Pässe, Karten oder sonstige Ausweisdokumente, werden zur Erhöhung ihrer Fälschungssicherheit mit verschiedenen Sicherheitselementen ausgestattet. Datenträger, wie Wert- oder Ausweisdokumente, aber auch andere Wertgegenstände, wie etwa Markenartikel, werden zur Absicherung oft mit Sicherheitsmerkmalen versehen, die eine Überprüfung der Echtheit des Datenträgers gestatten und die zugleich als Schutz vor unerlaubter Reproduktion dienen. Die Sicherheitsmerkmale können beispielsweise in Form separat hergestellter Sicherheitselemente vorliegen, die in die Datenträger ein- oder aufgebracht werden, beispielsweise in Form eines in eine Banknote eingebetteten Sicherheitsfadens, einer Abdeckfolie für eine Banknote mit Loch, eines aufgebrachten Sicherheitsstreifens oder eines selbsttragenden Transferelements, das nach seiner Herstellung auf ein Wertdokument aufgebracht wird. Teilweise werden die Sicherheitsmerkmale auch direkt auf das zu schützende Wertdokument aufgedruckt oder in das Volumen des Wertdokumentsubstrats eingebracht. Die Sicherheitsmerkmale können dabei mit bloßem Auge sichtbar oder auch nur mittels entsprechender Sensoren maschinenlesbar sein.Value documents, such as banknotes, shares, bonds, certificates, vouchers, checks, as well as other forgery-prone securities, such as passports, cards or other identity documents, are equipped with various security elements to increase their security against counterfeiting. Data carriers, such as valuables or identity documents, but also other valuables, such as branded articles, are often provided with security features for security purposes, which allow a verification of the authenticity of the data carrier and at the same time as protection against unauthorized reproduction serve. The security features can be present, for example, in the form of separately produced security elements which are inserted or applied to the data carriers, for example in the form of a security thread embedded in a banknote, a covering sheet for a banknote with a hole, an applied security strip or a self-supporting transfer element that is in accordance with his Production is applied to a document of value. Some of the security features are also printed directly on the value document to be protected or incorporated into the volume of the value document substrate. The security features can be visible to the naked eye or even be machine-readable only by means of appropriate sensors.
Als problematisch hat sich erwiesen, dass die mit bloßem Auge erkennbaren Sicherheitsmerkmale dem Fälscher leicht zugänglich und damit leicht nachahmbar sind und die maschinenlesbaren Sicherheitsmerkmale üblicherweise sehr aufwendig in der Herstellung und Verarbeitung sind und oft hohe Anforderungen an die Detektion stellen.It has proven to be problematic that the security features that can be seen with the naked eye are easily accessible to the counterfeiter and thus easy to imitate, and that the machine-readable security features are usually very complicated to manufacture and process and often make high demands on the detection.
Davon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, Sicherheitssubstrate für Sicherheitspapiere und Wertdokumente der eingangs genannten Art hinsichtlich ihrer Nachahmungssicherheit weiter zu verbessern und kostengünstig herzustellen.Based on this, the object of the present invention is to further improve security substrates for security papers and documents of value of the type mentioned above with regard to their security against imitation and to produce them cost-effectively.
Diese Aufgabe wird durch das Sicherheitssubstrat mit den Merkmalen des Hauptanspruchs gelöst. Ein entsprechendes Wertdokument sowie ein zugehöriges Herstellungsverfahren und ein Verfahren zur Prüfung der Echtheit sind in den nebengeordneten Ansprüchen angegeben.This object is achieved by the security substrate having the features of the main claim. A corresponding value document and an associated production method and a method for checking the authenticity are specified in the independent claims.
Weiterbildungen der Erfindung sind Gegenstand der Unteransprüche.Further developments of the invention are the subject of the dependent claims.
Gemäß der Erfindung ist bei einem gattungsgemäßen Sicherheitssubstrat vorgesehen, dass das Substrat mindestens einen ersten Teilbereich und mindestens einen zweiten Teilbereich umfasst, wobei der erste Teilbereich Hohlkügelchen und keine Mischung aus Rutil und Anatas und der zweite Teilbereich Rutil und/oder Anatas, aber keine Hohlkügelchen umfasst.According to the invention, it is provided in a generic security substrate that the substrate comprises at least a first portion and at least a second portion, wherein the first portion comprises hollow beads and no mixture of rutile and anatase and the second portion of rutile and / or anatase, but no hollow beads ,
In einer bevorzugten Ausführungsform umfasst der erste Teilbereich Hohlkügelchen, aber kein Anatas und kein Rutil, und der zweite Teilbereich umfasst eine Mischung aus Rutil und Anatas, aber keine Hohlkügelchen.In a preferred embodiment, the first portion comprises hollow beads, but no anatase and no rutile, and the second portion comprises a mixture of rutile and anatase, but no hollow beads.
In einer weiteren bevorzugten Ausführungsform umfasst der erste Teilbereich eine Mischung aus Hohlkügelchen und Rutil, aber kein Anatas, und der zweite Teilbereich umfasst
- Rutil, aber kein Anatas und keine Hohlkügelchen, oder
- Anatas, aber kein Rutil und keine Hohlkügelchen oder
- eine Mischung aus Rutil und Anatas, aber keine Hohlkügelchen.
- Rutile, but no anatase and no hollow spheres, or
- Anatase, but no rutile and no hollow spheres or
- a mixture of rutile and anatase, but no hollow globules.
In einer weiteren bevorzugten Ausführungsform umfasst der erste Teilbereich eine Mischung aus Hohlkügelchen und Anatas, aber kein Rutil, und der zweite Teilbereich umfasst
- Rutil, aber kein Anatas und keine Hohlkügelchen oder
- Anatas, aber kein Rutil und keine Hohlkügelchen oder
- eine Mischung aus Hohlkügelchen und Rutil, aber kein Anatas, oder
- eine Mischung aus Rutil und Anatas, aber keine Hohlkügelchen.
- Rutile, but no anatase or hollow spheres or
- Anatase, but no rutile and no hollow spheres or
- a mixture of hollow spheres and rutile, but no anatase, or
- a mixture of rutile and anatase, but no hollow globules.
In besonders bevorzugten Ausführungsformen umfasst der erste Teilbereich Hohlkügelchen und weder Anatas noch Rutil und der zweite Teilbereich umfasst Anatas und weder Rutil noch Hohlkügelchen.In particularly preferred embodiments, the first portion comprises hollow beads and neither anatase nor rutile and the second portion comprises anatase and neither rutile nor hollow beads.
In einer weiteren besonders bevorzugten Ausführungsform umfasst der erste Teilbereich Hohlkügelchen und weder Anatas noch Rutil und der zweite Teilbereich umfasst Rutil und weder Anatas noch Hohlkügelchen.In a further particularly preferred embodiment, the first subregion comprises hollow beads and neither anatase nor rutile, and the second subregion comprises rutile and neither anatase nor hollow beads.
In einer weiteren Ausführungsform umfasst das Substrat mindestens einen dritten Teilbereich, der Rutil und/ oder Anatas und gegebenenfalls Hohlkügelchen umfasst und sich vom ersten und zweiten Teilbereich bezüglich des Vorhandenseins von Rutil, Anatas und den Hohlkügelchen unterscheidet. Dies bedeutet, dass erster, zweiter und dritter Teilbereich bezüglich Anatas, Rutil und den Hohlkügelchen unterscheidbar sind.In a further embodiment, the substrate comprises at least a third portion which comprises rutile and / or anatase and optionally hollow beads and which differs from the first and second portions with respect to the presence of rutile, anatase and the hollow beads. This means that the first, second and third subareas are distinguishable with respect to anatase, rutile and the hollow beads.
Bevorzugt sind Ausführungsformen mit folgenden Teilbereichen:Preferred embodiments are with the following subareas:
Der erste Teilbereich umfasst Hohlkügelchen, aber kein Rutil und kein Anatas, der zweite Teilbereich umfasst Rutil, aber kein Anatas und keine Hohlkügelchen, und der dritte Teilbereich umfasst eine Mischung aus Rutil und Anatas, aber keine Hohlkügelchen.The first portion comprises hollow beads but no rutile and no anatase, the second portion comprises rutile, but no anatase and no hollow beads, and the third portion comprises a mixture of rutile and anatase, but no hollow beads.
Der erste Teilbereich umfasst Hohlkügelchen, aber kein Rutil und kein Anatas, der zweite Teilbereich umfasst Anatas, aber kein Rutil und keine Hohlkügelchen, und der dritte Teilbereich umfasst eine Mischung aus Rutil und Anatas, aber keine Hohlkügelchen.The first portion comprises hollow beads, but no rutile and no anatase, the second portion comprises anatase, but no rutile and no hollow beads, and the third portion comprises a mixture of rutile and anatase, but no hollow beads.
Der erste Teilbereich umfasst Hohlkügelchen, aber kein Rutil und kein Anatas, der zweite Teilbereich umfasst Rutil, aber kein Anatas und keine Hohlkügelchen, und der dritte Teilbereich umfasst
- eine Mischung aus Hohlkügelchen und Rutil, aber kein Anatas, oder
- Hohlkügelchen und Anatas, aber kein Rutil.
- a mixture of hollow spheres and rutile, but no anatase, or
- Hollow beads and anatase but no rutile.
Der erste Teilbereich umfasst eine Mischung aus Hohlkügelchen und Rutil, aber kein Anatas, der zweite Teilbereich umfasst Rutil, aber kein Anatas und keine Hohlkügelchen, und der dritte Teilbereich umfasst eine Mischung aus Hohlkügelchen und Anatas, aber kein Rutil.The first portion comprises a mixture of hollow beads and rutile, but no anatase, the second portion comprises rutile, but no anatase and no hollow beads, and the third portion comprises a mixture of hollow beads and anatase but no rutile.
Der erste Teilbereich umfasst eine Mischung aus Hohlkügelchen und Rutil, aber kein Anatas, der zweite Teilbereich umfasst Anatas, aber kein Rutil und keine Hohlkügelchen, und der dritte Teilbereich umfasst eine Mischung aus Hohlkügelchen und Anatas, aber kein Rutil.The first portion comprises a mixture of hollow beads and rutile, but no anatase, the second portion comprises anatase, but no rutile and no hollow beads, and the third portion comprises a mixture of hollow beads and anatase, but no rutile.
Besonders bevorzugt ist die Ausführungsform, bei der
- der mindestens erste Teilbereich Hohlkügelchen, aber kein Rutil und kein Anatas umfasst,
- der mindestens zweite Teilbereich Anatas, aber kein Rutil und keine Hohlkügelchen, umfasst, und
- der mindestens dritte Teilbereich Rutil, aber kein Anatas und keine Hohlkügelchen, umfasst.
- the at least first subregion comprises hollow beads, but no rutile and no anatase,
- the at least second subarea anatase, but not rutile and no hollow spheres comprises, and
- the at least third subregion comprises rutile but no anatase and no hollow globules.
Rutil, Anatas und die Hohlkügelchen zeichnen sich dadurch aus, dass diese deckende Eigenschaften aufweisen, unterschiedliche Transmission/ Remission im UV-Bereich aufweisen und im sichtbaren Bereich des Spektrums nahezu keine Körperfarbe/Buntfarbe aufweisen.Rutile, anatase and the hollow spherules are characterized by the fact that they have opaque properties, have different transmission / remission in the UV range and in the visible region of the spectrum have almost no body color / color.
Bei den Hohlkügelchen handelt es sich um kunststoffbasierte Hohlkügelchen, die Licht streuen und damit als deckende Beschichtung geeignet sind. Besonders geeignet sind Polystyrol (PES)-Hohlkügelchen oder gesinterte Polytetrafluorethylen (PTFE)-Kügelchen.The hollow spheres are plastic-based hollow spheres which scatter light and are therefore suitable as an opaque coating. Particularly suitable are polystyrene (PES) hollow beads or sintered polytetrafluoroethylene (PTFE) beads.
Bei Anatas und Rutil handelt es sich um Modifikationen von Titandioxid. Beide Modifikationen werden erfindungsgemäß als Pigmente eingesetzt.Anatase and rutile are modifications of titanium dioxide. Both modifications are used according to the invention as pigments.
Anatas, Rutil und die Hohlkügelchen können in Form von Beschichtungen oder Druckfarben oder im Transferverfahren auf das Substrat aufgebracht werden.Anatase, rutile and the hollow spheres can be applied to the substrate in the form of coatings or printing inks or in a transfer process.
Bei den Beschichtungen handelt es sich vorzugsweise um Farbannahmeschichten. Diese werden insbesondere bei Polymersubstraten eingesetzt. Besonders bevorzugt sind die erfindungsgemäßen Teilbereiche dieser Farbannahmeschichten mit dem bloßen Auge nicht unterscheidbar.The coatings are preferably ink receiving layers. These are used in particular for polymer substrates. Particularly preferably, the subregions of these ink-receiving layers according to the invention are indistinguishable from the naked eye.
Vorzugsweise werden die Hohlkügelchen in Druckfarben beigemengt, besonders bevorzugt in Druckfarben, die mit hohem Farbauftrag eingesetzt werden. Beispiele für derartige Druckfarben sind Sieb-, Tief- oder Flexodruckfarben.Preferably, the hollow spheres are incorporated in printing inks, more preferably in printing inks, which are used with high paint. Examples of such printing inks are screen, gravure or flexographic inks.
Die Teilbereiche einer Beschichtung auf Basis von Hohlkügelchen lassen sich nachträglich bereichsweise noch mittels thermischer Einwirkung transparentisieren. Die thermische Einwirkung kann auf kontaktbasierten Systemen oder kontaktlosen Systemen beruhen.The subregions of a coating based on hollow spherules can subsequently be partially transparent by means of thermal action. The thermal effect can be based on contact-based systems or contactless systems.
Kontaktbasierte Systeme können temperierte Stempel (auch z.B. temperierte Zifferndruckwerke oder Hochdruckplatten) sein. Die Temperatur ist bevorzugt im Schmelzbereich des Polymers unter Berücksichtigung der Zeit, des Drucks und des Wärmeübergangswertes der Beschichtung.Contact-based systems can be tempered stamps (also tempered digit printing units or high-pressure plates, for example). The temperature is preferred in the melting range of the polymer taking into account the time, pressure and heat transfer value of the coating.
Kontaktlose Systeme können Luftstrahldüsen in Kombination mit einem Heizelement oder Laser sein. Bei Einsatz eines Lasers muss sichergestellt werden, dass die Laserstrahlung nicht reflektiert, sondern möglichst in der Nähe der Hohlkügelchen absorbiert wird. Dies erreicht man z.B. mittels IR-Absorber, welche auf die Wellenlänge eines Nd:Yag-Lasers (1065 nm) ausgelegt sind. Der IR-Absorber kann dabei im die Hohlkügelchen umhüllenden Bindemittel, in die Kapselwand oder/und in den Hohlkörper eingebracht werden.Contactless systems can be air jet nozzles in combination with a heating element or laser. When using a laser, it must be ensured that the laser radiation does not reflect, but is absorbed as close as possible to the hollow spheres. This can be achieved e.g. by means of IR absorbers, which are designed for the wavelength of a Nd: Yag laser (1065 nm). The IR absorber can be introduced in the hollow beads enveloping binder, in the capsule wall and / or in the hollow body.
Die thermische Transparentisierung kann für eine nachträgliche Personalisierung als Humanmerkmal genutzt werden.The thermal transparency can be used as a human feature for subsequent personalization.
Rutil und Anatas werden vorzugsweise in Buntfarben beigemengt.Rutile and anatase are preferably mixed in bright colors.
Die erfindungsgemäßen Teilbereiche können entweder im sichtbaren Spektrum für das bloße Auge nicht unterscheidbar sein, d.h. den gleichen Farbton aufweisen, oder je nach Motiv unterschiedliche Farbtöne aufweisen. Weisen die Druckfarben den gleichen Farbton auf, so ist es möglich, beim Stichdruck einen UV-Schnitt zu realisieren.The partial regions according to the invention can either be indistinguishable in the visible spectrum to the naked eye, i. have the same color, or have different shades depending on the subject. If the printing inks have the same hue, it is possible to realize a UV cut when printing on stitches.
Die eingesetzten Farben bzw. Beschichtungen können UV-trocknend, wasserbasiert, lösemittelbasiert oder Kombinationen der vorab genannten Varianten sein. Der Anteil an Anatas, Rutil oder den Hohlkügelchen liegt zwischen 5 Gew. % bis 70 Gew. % in der nicht getrockneten Beschichtung.The colors or coatings used may be UV-drying, water-based, solvent-based or combinations of the aforementioned variants. The proportion of anatase, rutile or the hollow beads is between 5 wt.% To 70 wt.% In the non-dried coating.
Die Beschichtungsdicke pro Seite kann zwischen 0,5 µm bis 30 µm (trocken) je nach eingesetztem Beschichtungsverfahren und Anzahl der Einzelschichten sein. Bevorzugt ist die Beschichtungsdicke zwischen 1 µm bis 20 µm pro Seite (trocken).The coating thickness per side can be between 0.5 μm to 30 μm (dry), depending on the coating method used and the number of individual layers. The coating thickness is preferably between 1 μm and 20 μm per side (dry).
Das Verfahren zum Herstellen eines erfindungsgemäßen Sicherheitssubstrates umfasst das Bereitstellen eines Trägermaterials, das mit mindestens einem ersten und mindestens einem zweiten Teilbereich ausgestattet wird, wobei der erste Teilbereich Hohlkügelchen und keine Mischung aus Rutil und Anatas und der zweite Teilbereich Rutil und/ oder Anatas aber keine Hohlkügelchen umfasst.The method for producing a security substrate according to the invention comprises providing a carrier material which is provided with at least a first and at least a second subregion, wherein the first subregion comprises hollow beads and no mixture of rutile and anatase and the second subregion rutile and / or anatase but no hollow beads includes.
In einer bevorzugten Variante wird das Sicherheitssubstrat zusätzlich mit mindestens einem dritten Teilbereich ausgestattet, der sich vom ersten und zweiten Teilbereich bezüglich des Vorhandenseins von Rutil, Anatas und den Hohlkügelchen unterscheidet.In a preferred variant, the security substrate is additionally provided with at least a third portion, which differs from the first and second portion with respect to the presence of rutile, anatase and the hollow beads.
Als Trägermaterialien kommen alle die im Vor- und Nachgang beschriebenen, für die Sicherheitssubstrate denkbaren Substrate in Frage, wie z.B. Polymerfolien, Papiere und Kombinationen daraus.Suitable carrier materials are all the substrates described in the preceding and following, conceivable for the security substrates, such as e.g. Polymer films, papers and combinations thereof.
Neben den bereits beschriebenen Druckverfahren und Beschichtungsverfahren sowie Transferverfahren, kann das Trägermaterial auch bei der Herstellung desselben mit Rutil, Anatas bzw. den Hohlkügelchen erfindungsgemäß ausgestattet werden.In addition to the printing methods and coating methods described above, as well as transfer methods, the support material can also be provided according to the invention with rutile, anatase or the hollow beads in the production thereof.
Bei Polymersubstraten kann beispielsweise bei der Extrusion der Folien Anatas bzw. Rutil dem zu verarbeitenden Kunststoffgranulat beigemengt sein. Bei papiermacherisch hergestellten Substraten, vorzugsweise mittels Papierrundsiebmaschine, können Anatas, Rutil, bzw. die Hohlkügelchen in die Papiermasse eingebracht werden. Sobald sich im Papierherstellungsprozess die entsprechenden Papierbahnen gebildet haben, enthalten diese die vorgegebene Titandioxidmodifikation bzw. Hohlkügelchen. Insbesondere bei Zweilagenpapieren können die Lagen unterschiedlich ausgestattet werden. Zwischen den Papierlagen kann eventuell noch zusätzlich eine Kunststofffolie vorliegen.In the case of polymer substrates, it is possible, for example during the extrusion of the foils, to add anatase or rutile to the plastic granules to be processed. In the case of paper-made substrates, preferably by means of paper round screening machine, anatase, rutile or the hollow spheres can be introduced into the pulp. As soon as the corresponding paper webs have formed in the papermaking process, they contain the prescribed titanium dioxide modification or hollow spheres. Especially with two-ply papers, the layers can be equipped differently. Between the paper layers may possibly be additionally present a plastic film.
Alternativ oder ergänzend besteht auch die Möglichkeit, Anatas, Rutil bzw. die Hohlkügelchen nach der Blattbildung auf die feuchte Papierbahn aufzubringen. Geeignete Verfahren hierzu sind in der
Als Druckverfahren zur Erzeugung der Teilbereiche eignen sich der Offset-, Hoch-, Flexo-, Tief-, Intaglio-, Ink-Jet-Druck und tonerbasierte Druckverfahren. Bevorzugt werden der Sieb-, Tief- und Flexodruck eingesetzt.Suitable printing methods for producing the subregions are offset, letterpress, flexo, gravure, intaglio, inkjet printing and toner-based printing methods. Preference is given to screen printing, gravure printing and flexographic printing.
Bei Offset- und Hochdruckverfahren kann der Anteil an Titandioxid bzw. Hohlkügelchen bei guten chemischen und physikalischen Beständigkeiten und guter Verdruckbarkeit bis zu 70 % betragen. Auf Grund des hohen spezifischen Gewichts von Titandioxid bei ca. 4g/cm3 liegt bei einer Farbschicht von 1 µm bis 1,5 µm der Anteil an übertragenen Titandioxid bei 2,8 g/m2 bis 4,2 g/m2.In offset and high-pressure processes, the proportion of titanium dioxide or hollow spheres can be up to 70% with good chemical and physical resistances and good printability. Due to the high specific gravity of titanium dioxide at about 4 g / cm 3 , the proportion of transferred titanium dioxide is from 2.8 g / m 2 to 4.2 g / m 2 for a color layer of from 1 μm to 1.5 μm.
Bei einer visuell sichtbaren bzw. einer bunten Farbe reduziert sich der Anteil an Titandioxid bzw. den Hohlkügelchen in der Farbe. Bei 1 Gew. % Buntpigment (organisch) in der Farbe führt dies beispielsweise zu einer Reduzierung an Titandioxid bzw. Hohlkügelchen von mindestens 5 Gew.% bis 10 Gew.%, bezogen auf die Masse an Titandioxid.In the case of a visually visible or a colorful color, the proportion of titanium dioxide or the hollow beads in the color is reduced. For example, with 1% by weight of colored pigment (organic) in the paint, this leads to a reduction to titanium dioxide or hollow spheres of at least 5 wt.% To 10 wt.%, Based on the mass of titanium dioxide.
Bevorzugt werden höhere Konzentrationen eingesetzt, da sich damit die Erkennbarkeit mittels Sensor verbessert.Higher concentrations are preferably used, since this improves the detectability by means of a sensor.
Bei Stichdruckfarben kann der Anteil an Titandioxid bzw. den Hohlkügelchen in ähnlicher Höhe wie bei Offsetfarben liegen. Allerdings kann die übertragene Schichtdicke je nach Gravurtiefe der Druckplatte zwischen 1 µm bis 30 µm liegen, so dass die auf dem Substrat verankerte Titandioxid-Pigment- bzw. Hohlkügelchenkonzentration deutlich höher ist.In the case of spot inks, the proportion of titanium dioxide or the hollow beads may be at a similar level to offset inks. However, the transferred layer thickness, depending on the engraving depth of the printing plate between 1 .mu.m to 30 .mu.m, so that the anchored on the substrate titanium dioxide pigment or Hohlkugelchenkonzentration is significantly higher.
Die Beschichtungen und Druckfarben können zusätzlich zu Rutil, Anatas bzw. den Hohlkügelchen weitere Sicherheitsmerkmale umfassen, beispielsweise Magnetpigmente, Lumineszenzstoffe, Stoffe mit optisch variablen Eigenschaften, wie Flüssigkristalle oder Dünnschichtpigmente, Stoffe mit im IR-lesbaren Eigenschaften usw.The coatings and printing inks may comprise, in addition to rutile, anatase or hollow globules, other security features, for example magnetic pigments, luminescent substances, substances with optically variable properties, such as liquid crystals or thin-film pigments, substances with IR-readable properties, etc.
Weiterhin lässt sich das Merkmal auch auf Basis von Transferverfahren erzeugen, bei dem sich mittels Heiß- oder Kaltpräge-Transferverfahren Lackschichten auf Basis von Titandioxid bzw. der Hohlkügelchen applizieren lassen. Weiterhin können auch Transferfolien mit solchen Eigenschaften appliziert werden. Die Lackschichten oder das Folienelement können den mindestens einen oder den mindestens ersten und zweiten Teilbereich oder den mindestens ersten, zweiten und dritten Teilbereich aufweisen.Furthermore, the feature can also be produced on the basis of transfer processes, in which lacquer layers based on titanium dioxide or the hollow beads can be applied by means of hot or cold embossing transfer processes. Furthermore, transfer films having such properties can also be applied. The lacquer layers or the foil element can have the at least one or the at least first and second partial area or the at least first, second and third partial area.
Die Teilbereiche liegen auf der Oberfläche des Substrates und/ oder im Volumen des Substrates.The subregions lie on the surface of the substrate and / or in the volume of the substrate.
Dabei sind alle Kombinationen denkbar. Vorzugsweise liegen die Teilbereiche auf der Oberfläche des Substrates.All combinations are conceivable. Preferably, the subregions are on the surface of the substrate.
Die Teilbereiche können auf der Vorder- und/oder Rückseite des Substrates vorliegen.The partial regions can be present on the front and / or rear side of the substrate.
Die Teilbereiche können nebeneinander (Stoß an Stoß oder beabstandet), übereinander oder teilweise überlappend vorliegen. Vorzugsweise liegen die Teilbereiche nebeneinander.The partial regions can be present next to one another (joint to joint or at a distance), one above the other or partially overlapping. Preferably, the sections are adjacent.
Die Teilbereiche können auch ineinander übergehen. Beispielsweise können im Überlappungsbereich die Schichtdicke und/oder Flächenbedeckung des einen Teilbereichs abnehmen und die des anderen Teilbereichs zunehmen.The sections can also merge into each other. For example, in the overlapping region, the layer thickness and / or surface coverage of one subregion may decrease and that of the other subregion increase.
Es ist aber auch möglich, dass die Teilbereiche in das Volumen des Substrates eingearbeitet sind. Des Weiteren ist es möglich, dass beispielsweise ein Teilbereich auf der Oberfläche des Substrates und ein anderer Teilbereich im Volumen des Substrates vorliegt.But it is also possible that the subregions are incorporated in the volume of the substrate. Furthermore, it is possible that, for example, one partial region is present on the surface of the substrate and another partial region is present in the volume of the substrate.
Ein Teilbereich kann insbesondere vollflächig oder als Motiv ausgestaltet sein. Unter dem Begriff "Motiv" ist insbesondere ein Muster oder ein Bild zu verstehen. Das Motiv kann darüber hinaus eine Information vermitteln, indem es z.B. ein Zeichen, eine Zeichenfolge, eine Codierung (z.B. Barcode) oder eine Bildinformation aufweist.A partial area can in particular be configured over the entire surface or as a motif. The term "motif" is to be understood in particular as a pattern or a picture. The motif may also convey information by e.g. a character, a string, an encoding (e.g., bar code), or image information.
Liegt der Teilbereich im Volumen des Substrates vor, ist es möglich dreidimensionale Motive zu gestalten.If the subregion is present in the volume of the substrate, it is possible to design three-dimensional motifs.
Weiterhin können bei mehrlagigen Substraten die Teilbereiche in oder auf unterschiedlichen Lagen vorliegen.Furthermore, in the case of multilayer substrates, the partial regions may be present in or on different layers.
Die Größe und Abmessung der Teilbereiche richtet sich ganz nach den gewünschten Motiven und den eingesetzten Sensoren zum Vermessen des Merkmals. Dies ist dem Fachmann bekannt.The size and dimension of the subregions depends entirely on the desired motifs and the sensors used to measure the feature. This is known to the person skilled in the art.
Mit Bezug auf das Substrat gibt es keine speziellen Beschränkungen. Als Materialien eignen sich Papier, Kunststoff oder Kombinationen davon.With respect to the substrate, there are no particular restrictions. Suitable materials are paper, plastic or combinations thereof.
Das Substrat kann dabei sowohl als Sicherheitselement, als Sicherheitspapier oder als Wertdokument eingesetzt werden.The substrate can be used both as security element, as security paper or as value document.
Beispielsweise werden Sicherheitspapiere für Banknoten typischerweise aus Fasern von Einjahrespflanzen, insbesondere Baumwollfasern, hergestellt.For example, security papers for banknotes are typically made from fibers of annual plants, especially cotton fibers.
Es können auch Papiere verwendet werden, die zum Teil Kunststofffasern, vorzugsweise Polyamidfasern oder Polyesterfasern, aufweisen. In einer weiteren Alternative kann der Faseranteil der Papiere vollständig aus Kunststofffasern bestehen.It is also possible to use papers which partly comprise synthetic fibers, preferably polyamide fibers or polyester fibers. In a further alternative, the fiber content of the papers may consist entirely of plastic fibers.
Als Wertdokumentsubstrat eignet sich darüber hinaus insbesondere eine Polymerfolie (bzw. Kunststofffolie), die eine geeignete Farbannahmeschicht aufweist. Vorzugsweise besteht die Polymerfolie aus biaxial gerecktem Polypropylen (BOPP).In addition, a polymer film (or plastic film) which has a suitable ink-accepting layer is particularly suitable as a value-document substrate. The polymer film preferably consists of biaxially oriented polypropylene (BOPP).
Besonders bevorzugt wird ein Baumwollpapier als Substrat verwendet. Das Flächengewicht des Substrats variiert je nach Anwendungsform. Übliche Flächengewichte liegen im Bereich von 50 g/m2 bis 100 g/m2, vorzugsweise im Bereich 60 g/m2 bis 90 g/m2.More preferably, a cotton paper is used as the substrate. The basis weight of the substrate varies depending on the application form. Usual basis weights are in the range of 50 g / m 2 to 100 g / m 2 , preferably in the range 60 g / m 2 to 90 g / m 2 .
Das Substrat kann einlagig oder mehrlagig sein.The substrate may be single-layered or multi-layered.
Bei mehrlagigen Substraten können die einzelnen Lagen aus gleichen oder aus unterschiedlichen Materialien bestehen. Beispielweise kann eine Lage ein reines Baumwollpapier sein, während eine weitere Lage Kunststofffasern aufweist. Des Weiteren können als Substrat auch mehrlagige Papier/Folien-Verbunde herangezogen werden, wie etwa ein Papier/Folien/Papier-Verbund oder ein Folie/Papier/Folie-Verbund.For multilayer substrates, the individual layers may consist of the same or different materials. For example, one layer may be a pure cotton paper while another layer may be plastic fibers. Furthermore, as a substrate it is also possible to use multilayer paper / film composites, such as a paper / film / paper composite or a film / paper / film composite.
Das Substrat kann des Weiteren mit üblichen Sicherheitselementen ausgestattet sein, wie z.B. Fenstern, Sicherheitsfäden, Patches etc. Auch diese Sicherheitselemente können im Sinne der Erfindung als Sicherheitssubstrat gesehen werden.The substrate may further be provided with conventional security elements, e.g. Windows, security threads, patches, etc. These security elements can be seen as a security substrate in the context of the invention.
Das erfindungsgemäße Sicherheitssubstrat lässt sich vorteilhafterweise auch für kartenbasierte Wertdokumente (z.B. Kreditkarten, ID-Dokumente, wie Pässe, Führerscheine, Ausweise usw.) einsetzen.The security substrate according to the invention can also advantageously be used for card-based value documents (for example credit cards, ID documents, such as passports, driving licenses, identity cards, etc.).
Kartenbasierte Wertdokumente bestehen in der Regel aus einem mehrschichtigen Folienaufbau. Die Folien werden in der Regel bei hoher Temperatur und Druck zu einem Kartenkörper laminiert, der die notwendigen Beständigkeiten aufweist.Card-based value documents usually consist of a multilayered film structure. The films are usually laminated at high temperature and pressure to a card body having the necessary resistances.
Bevorzugt nimmt man für die außen liegenden Deckfolien transparente Folien und für den innen liegenden Kern deckende Folien. Des Weiteren wird bevorzugt die äußere deckende Folie bedruckt, so dass die Druckschicht durch die auflaminierte transparente Deckfolie vor physikalischen Einflüssen, wie Kratzen usw., geschützt wird. Die deckenden Folien enthalten in der Regel Titandioxid als deckende Komponente im Polymer (z.B. PVC, PA, Polycarbonat usw.).It is preferable to use transparent films for the outer cover films and films covering the inner core. Furthermore, the outer covering film is preferably printed, so that the printing layer is protected by the laminated transparent cover sheet from physical influences, such as scratching, etc. The opaque films usually contain titanium dioxide as a covering component in the polymer (eg PVC, PA, polycarbonate, etc.).
Besonders bevorzugt sind folgende Aufbauten:Particularly preferred are the following constructions:
Die Vorderseiten-Deckfolie enthält Anatas oder Rutil und die Rückseiten-Deckfolie ist mit einer Hohlkügelchen umfassenden Druckfarbe bedruckt. Die Detektion erfolgt in Reflektion von der jeweiligen Seite aus.The front cover sheet contains anatase or rutile, and the back cover sheet is printed with a hollow globule of ink. The detection takes place in reflection from the respective side.
Eine Deckfolie (Vorder- und/oder Rückseite) ist aus mindestens zwei Streifen zusammengesetzt, wobei jeweils ein Streifen mit Hohlkügelchen enthaltender Farbe bedruckt ist und einer Rutil oder Anatas umfasst. Bei mehreren Streifen können sich die rutil- bzw. anatashaltigen Streifen mit den Hohlkügelchen umfassenden Streifen abwechseln.A cover sheet (front and / or back) is composed of at least two strips, each printed with a strip containing hollow globules of color and comprising a rutile or anatase. For multiple strips, the rutile or anatase-containing strips may alternate with the strips comprising the hollow beads.
Eine der Deckfolien enthält Rutil oder Anatas und mindestens eine Aussparung (z.B. Ausstanzung), die andere Deckfolie umfasst Hohlkügelchen. Erfolgt die Messung von der Seite der rutil- bzw. anatashaltigen Deckfolie aus, erkennt der Sensor im Fensterbereich die Hohlkügelchen, im übrigen Bereich das Rutil bzw. das Anatas.One of the cover sheets contains rutile or anatase and at least one recess (e.g., punched out), the other cover sheet comprises hollow beads. If the measurement is made from the side of the rutile- or anatase-containing cover film, the sensor recognizes the hollow spheres in the window area and the rutile or anatase in the remaining area.
Mindestens eine der Folien im Kartenkörper ist mit einer anatas- oder rutilhaltigen und einer Hohlkügelchen enthaltenden Druckfarbe auf mindestens einer Seite des Kartenkörpers bedruckt, wobei die Druckfarben bevorzugt einen visuell nicht unterscheidbaren Farbton aufweisen.At least one of the films in the card body is coated with at least an anatase- or rutile-containing and hollow-globule-containing printing ink printed on one side of the card body, wherein the inks preferably have a visually indistinguishable hue.
Des Weiteren sind kartenbasierte Wertdokumente aller Art, d.h. ausschließlich auf Polymerschichten basierte, aber auch papierbasierte und Kombinationen von Papier- mit Polymerschichten möglich.Furthermore, card-based value documents of all kinds, i. exclusively based on polymer layers, but also paper-based and combinations of paper with polymer layers possible.
Das Verfahren zur Prüfung, insbesondere der Echtheit, eines erfindungsgemäßen Sicherheitssubstrats umfasst das Beleuchten mit ultraviolettem Licht und das Bewerten des durch das Sicherheitssubstrat transmittierten oder reflektierten ultravioletten Lichts für die Überprüfung der Echtheit des Sicherheitssubstrats, wobei das vermessene Transmissions- bzw. Reflektionsspektrum der Hohlkügelchen und von Anatas und/ oder Rutil - soweit vorhanden - bewertet wird. Da sich die Hohlkügelchen und Titanmodifikationen Anatas und Rutil im UV-Bereich unterscheiden, ist es möglich, ein visuell nicht erkennbares, aber maschinenlesbares Merkmal zu realisieren.The method for testing, in particular the authenticity, of a security substrate according to the invention comprises illuminating with ultraviolet light and evaluating the transmitted or reflected by the security substrate ultraviolet light for checking the authenticity of the security substrate, wherein the measured transmission or reflection spectrum of the hollow beads and Anatase and / or rutile - if available - is assessed. Since the hollow spheres and titanium modifications anatase and rutile differ in the UV range, it is possible to realize a visually unrecognizable but machine-readable feature.
Der hierin verwendete Begriff "ultraviolettes Licht" bezeichnet insbesondere Licht mit einer Wellenlänge in einem Bereich von 235 nm bis 380 nm.The term "ultraviolet light" as used herein refers particularly to light having a wavelength in a range of 235 nm to 380 nm.
Insbesondere wird bewertet, ob im UV-Spektralbereich die unterschiedlichen Spektren der Hohlkügelchen und von Anatas und Rutil - soweit vorhanden - in Bezug auf die Teilbereiche erkennbar sind.In particular, it is assessed whether the different spectra of the hollow spheres and of anatase and rutile, if present, in the UV spectral region can be recognized with respect to the subregions.
Als Sensor kann ein UV-Transmissionssensor, wie in der
Die Empfindlichkeit des Sensors liegt bei 370 nm mit einer Halbwertsbreite von 70 nm (definiert über den eingesetzten Filter).The sensitivity of the sensor is 370 nm with a half width of 70 nm (defined over the filter used).
Der Nachweis des UV-Merkmals kann sowohl in Transmission, in Reflektion als auch in Kombination erfolgen. Der Sensor kann auf einer Zeilen- oder Matrixkamera zur Bilderfassung beruhen.The detection of the UV feature can be done both in transmission, in reflection and in combination. The sensor can be based on a line or matrix camera for image acquisition.
Um den relevanten Spektralbereich (UV- und naher VIS-Bereich) für die Prüfung zu nutzen, gibt es prinzipiell nachfolgende Möglichkeiten:
- Beleuchtung mit Leuchtkörpern (z.B. LED) im Bereich des zu prüfenden Wellenlängenbereichs und Bildsensor mit einer Empfindlichkeit mindestens im zu prüfenden Wellenlängenbereich;
- Bildsensor mit einer Empfindlichkeit im Bereich des zu prüfenden Wellenlängenbereichs (z.B. durch Verwendung entsprechender Filter) und Leuchtkörper mit einer Emission mindestens im zu prüfenden Wellenlängenbereich;
- Beleuchtung mit Leuchtkörpern (z.B. LED) im Bereich des zu prüfenden Wellenlängenbereichs und Bildsensor mit einer Empfindlichkeit im zu prüfenden Wellenlängenbereich.
- Illumination with luminous bodies (eg LED) in the region of the wavelength range to be tested and image sensor with a sensitivity at least in the wavelength range to be tested;
- Image sensor with a sensitivity in the range of the wavelength range to be tested (eg by using appropriate filters) and luminous bodies with an emission at least in the wavelength range to be tested;
- Illumination with luminous bodies (eg LED) in the range of the wavelength range to be tested and image sensor with a sensitivity in the wavelength range to be tested.
Das erfindungsgemäße Sicherheitssubstrat (einschließlich seiner Weiterbildungen) kann als Sicherheitselement, insbesondere als Sicherheitselement für ein Sicherheitspapier, Wertdokument oder dergleichen, eingesetzt werden. Insbesondere werden ein Sicherheitspapier und ein Wertdokument mit einem erfindungsgemäßen Sicherheitssubstrat (einschließlich seiner Weiterbildungen) bereitgestellt.The security substrate according to the invention (including its developments) can be used as a security element, in particular as a security element for a security paper, value document or the like. In particular, a security paper and a value document with a security substrate according to the invention (including its developments) are provided.
Das Sicherheitssubstrat kann insbesondere als Sicherheitsfaden, Aufreißfaden, Sicherheitsband, Sicherheitsstreifen, Patch oder als Etikett zum Aufbringen auf ein Sicherheitspapier, Wertdokument oder dergleichen ausgebildet sein. Insbesondere kann das Sicherheitssubstrat transparente Bereiche oder Ausnehmungen überspannen.The security substrate may in particular be designed as a security thread, tear-open thread, security tape, security strip, patch or label for application to a security paper, value document or the like. In particular, the security substrate can span transparent areas or recesses.
Das Sicherheitssubstrat kann auch das Sicherheitspapier selbst sein.The security substrate may also be the security paper itself.
Unter dem Begriff Sicherheitspapier wird hier insbesondere die noch nicht umlauffähige Vorstufe zu einem Wertdokument verstanden, die neben dem erfindungsgemäßen Sicherheitssubstrat beispielsweise auch weitere Echtheitsmerkmale (wie z.B. im Volumen vorgesehene Lumineszenzstoffe) aufweisen kann. Unter Wertdokumenten werden hier einerseits aus Sicherheitspapieren hergestellte Dokumente verstanden. Andererseits können Wertdokumente auch sonstige Dokumente und Gegenstände sein, die mit dem erfindungsgemäßen Sicherheitssubstrat versehen werden können, damit die Wertdokumente nicht kopierbare Echtheitsmerkmale aufweisen, wodurch eine Echtheitsprüfung möglich ist und zugleich unerwünschtes Kopieren verhindert wird.The term security paper is understood here to mean, in particular, the precursor which is not yet ready for use as a value document which, in addition to the security substrate according to the invention, may also have further authenticity features (such as, for example, luminescent substances provided in the volume). Value documents are here understood, on the one hand, documents produced from security papers. On the other hand, value documents can also be other documents and articles that can be provided with the security substrate according to the invention, so that the value documents have non-copyable authenticity features, whereby an authenticity check is possible and at the same time unwanted copying is prevented.
Anatas, Rutil und die Hohlkügelchen in der erfindungsgemäßen Verwendung sind leicht verfügbare und verarbeitbare, dennoch preisgünstige Sicherheitsmerkmale, die maschinell leicht detektierbar, aber nicht unmittelbar mit dem bloßen Auge erkennbar sind.Anatase, rutile and the hollow spheres in the use of the present invention are readily available and processable, yet inexpensive security features that are readily detectable by machine but are not immediately discernible to the naked eye.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in den angegebenen Kombinationen, sondern auch in anderen Kombinationen oder in Alleinstellung einsetzbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.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 or alone, without departing from the scope of the present invention.
Nachfolgend wird die Erfindung beispielshalber anhand der beigefügten Figuren, die auch erfindungswesentliche Merkmale offenbaren, noch näher erläutert. Zur besseren Anschaulichkeit wird in den Figuren auf eine maßstabs- und proportionsgetreue Darstellung und auf Schraffuren verzichtet. Es zeigen:
- Fig. 1
- eine Draufsicht einer Banknote mit erfindungsgemäßen nebeneinander angeordneten Teilbereichen;
- Fig. 2
- eine vergrößerte Schnittdarstellung der Banknote von
Fig. 1 ; - Fig. 3
- eine Draufsicht einer weiteren Banknote mit erfindungsgemäßen angeordneten Teilbereichen;
- Fig. 4a
- eine vergrößerte Schnittdarstellung der Banknote von
Fig. 3 ; - Fig. 4b
- eine vergrößerte alternative Schnittdarstellung der Banknote von
Fig. 3 ; - Fig. 5
- eine Schnittansicht mit drei erfindungsgemäßen Teilbereichen;
- Fig. 6
- Transmissionskurven von Anatas, Rutil und Hohlkügelchen.
- Fig. 1
- a plan view of a banknote with juxtaposed partial areas according to the invention;
- Fig. 2
- an enlarged sectional view of the banknote of
Fig. 1 ; - Fig. 3
- a plan view of another banknote with arranged subregions according to the invention;
- Fig. 4a
- an enlarged sectional view of the banknote of
Fig. 3 ; - Fig. 4b
- an enlarged alternative sectional view of the banknote of
Fig. 3 ; - Fig. 5
- a sectional view with three partial areas according to the invention;
- Fig. 6
- Transmission curves of anatase, rutile and hollow spheres.
In der gezeigten Variante sind die ersten und zweiten Teilbereiche jeweils deckungsgleich auf Vorder- und Rückseite angeordnet. Selbstverständlich ist dies nicht zwingend notwendig. So können die Teilbereiche auf Vorder- und/oder Rückseite beliebig angeordnet werden, solange die rutil- und hohlkügelchenhaltigen Teilbereiche vermessen werden können.In the variant shown, the first and second subregions are each arranged congruently on the front and rear side. Of course, this is not absolutely necessary. Thus, the subregions can be arranged on the front and / or rear as desired, as long as the rutile and hollow bead-containing portions can be measured.
Die jeweiligen Teilbereiche können auch aus mehreren Schichten bestehen, d.h. mehrere hohlkügelchenhaltige bzw. rutilhaltige Schichten sind übereinander aufgebracht. Hierdurch wird durch Erhöhung der jeweiligen Titandioxid- bzw. Hohlkügelchenmenge pro vermessener Fläche eine verbesserte Maschinenlesbarkeit erreicht. Durch die Überlagerung von mindestens zwei oder mehr Schichten kann auch ganz gezielt die Opazität gesteuert werden. Bei geeigneter Anordnung und Überlagerung mehrerer Schichten entsteht somit ein sogenanntes Pseudo-Wasserzeichen, d.h. verschiedene Hell-/ Dunkelbereiche, die mit dem bloßen Auge erkennbar sind. In diesem Fall wird ein mit bloßem Auge erkennbares Merkmal (Pseudowasserzeichen) mit dem erfindungsgemäßen, nur maschinenlesbaren Merkmal verbunden, was zu einem deutlich besseren Fälschungsschutz führt.The respective subregions can also consist of several layers, ie several hollow-globule-containing or rutile-containing layers are applied one above the other. As a result, improved machine readability is achieved by increasing the respective amount of titanium dioxide or hollow beads per metered area. By overlaying at least two or more layers, the opacity can also be controlled in a very targeted manner. With a suitable arrangement and superimposition of several layers, a so-called pseudo-watermark, ie different light / dark areas, which can be recognized by the naked eye, thus arises. In this case, a recognizable with the naked eye feature (pseudo watermark) with the invention, only machine-readable feature is connected, resulting in a much better protection against counterfeiting.
Die hohlkügelchenhaltigen Teilbereiche 2 und rutilhaltigen Teilbereiche 3 zeigen in Aufsicht eine streifenförmige Anordnung, die wie die Schnittdarstellungen in
Selbstverständlich können die Codierungen auch nur eine kleine Fläche auf der Banknote einnehmen, müssen also nicht zwingend die gesamte Fläche bedecken. Die Codierung kann auch zusätzlich in ein erfindungsgemäßes Motiv integriert werden. In diesem Fall kann eine kleinformatige Codierung aus erfindungsgemäßen Teilbereichen in ein großflächiges Motiv aus erfindungsgemäßen Teilbereichen integriert werden. Bei Verwendung unterschiedlich auflösender Sensoren ist es somit möglich, die unterschiedlichen Motive und/ oder Codierungen zu vermessen. Besonders interessant ist dies dann, wenn verschiedene Messstationen unterschiedliche Berechtigungen zugewiesen bekommen. So ist es sinnvoll, dass an einer Geschäftskasse beispielsweise nur das grobstrukturierte Motiv mit dem niedrigauflösenden Sensor gemessen werden kann, während bei Banken auch der hochauflösende Sensor zur Verfügung steht, um die feinstrukturierte Codierung zu vermessen.Of course, the codings can occupy only a small area on the banknote, so do not necessarily cover the entire area. The coding can also be integrated into a motif according to the invention. In this case, a small-format coding of partial areas according to the invention can be integrated into a large-area motif of partial areas according to the invention. When using different resolution sensors, it is thus possible to measure the different motifs and / or codings. This is particularly interesting if different measuring stations are assigned different authorizations. So it makes sense that at a business cash register, for example, only the coarse-textured motif can be measured with the low-resolution sensor, while banks also the high-resolution sensor is available to measure the finely structured coding.
Für die Spektren von
Bezüglich des Rutilspektrums wurde eine transparente BOPP-Folie mit einer Siebdruckfarbe auf Basis 15 Gew. % Rutil und 85 Gew. % Siebdruckmittel 3850 von Giesecke & Devrient GmbH bedruckt. Die Vorderseite wurde mit zwei und die Rückseite mit einer Siebdruckschicht (jeweils ca.10 µm Nassfilmschichtdicke) bedruckt.With regard to the rutile spectrum, a transparent BOPP film was printed with a screen printing ink based on 15% by weight of rutile and 85% by weight of screen printing agent 3850 from Giesecke & Devrient GmbH. The front was printed with two and the back with a screen printing layer (each about 10 microns wet film thickness).
Bezüglich des Hohlkügelchenspektrums wurde eine transparente BOPP-Folie mit Ink-Jet-Druckfarbe Deckweiß T596 C (Epson) bedruckt.With respect to the hollow bead spectrum, a transparent BOPP film was printed with ink jet ink opaque white T596 C (Epson).
Die Messungen erfolgten am UV-VIS-IR-Spektrometer 900 der Firma Perkin Elmer mit Ulbrichtkugel. Dazu wurde am Probenhalter außen ein Weißstandard befestigt, am Lichtstrahleintrittsbereich der Ulbrichtkugel eine Messblende (schwarzer Karton mit kreisförmiger 5 mm Öffnung) und die zu prüfende Probe fixiert. Als Referenz wurde die Messung gegen Luft genutzt. Gemessen wurde im Wellenlängenbereich von 200 nm bis 700 nm.The measurements were carried out on the Perkin Elmer UV-VIS IR spectrometer 900 with integrating sphere. For this purpose, a white standard was attached to the outside of the specimen holder, a measuring aperture (black cardboard with a circular 5 mm opening) was fixed at the light beam entrance area of the integrating sphere and the sample to be tested was fixed. As a reference the measurement against air was used. Was measured in the wavelength range from 200 nm to 700 nm.
Wie zu erkennen ist, ist das Spektrum der Anatasbeschichtung im Vergleich zum Spektrum der Rutilbeschichtung um ca. 30 nm zu niedrigeren Wellenlängen verschoben. Das Spektrum des Hohlkügelchenaufdrucks ist im Vergleich zum Spektrum der Anatasbeschichtung nochmal um ca. 70 nm zu niedrigeren Wellenlängen verschoben. Die Spektren sind somit leicht messtechnisch zu unterscheiden und leicht auszuwerten.As can be seen, the spectrum of the anatase coating is shifted by about 30 nm to lower wavelengths compared to the spectrum of the rutile coating. The spectrum of the hollow bead overprint is again shifted by about 70 nm to lower wavelengths compared to the spectrum of the anatase coating. The spectra are therefore easy to differentiate metrologically and easy to evaluate.
Ähnliche Ergebnisse (Spektren nicht gezeigt) ergeben sich bei der Vermessung von anatas- bzw. rutilhaltigen Stichtiefdruckfarben auf Baumwollpapier. Hierzu wurden 70 Gew. % Anatas bzw. Rutil in 30 Gew. % Stichdruckbindemittel dispergiert (mittels Dreiwalzenstuhl). Anschließend wurde das erzeugte Halbfabrikat mit 60 Gew. % Anteil mit 20 Gew. % Stichdruck-Basisfarbe Blau-Grünlich 9SL 4701 S der Firma SICPA und 20 Gew. % Transparentweiß 9SL 0700 S der Firma SICPA und 3 Gew. % Trockenstoff 870950 der Firma SICPA ergänzt.Similar results (spectra not shown) result from the measurement of anatase- or rutile-containing intaglio printing inks on cotton paper. For this purpose, 70% by weight of anatase or rutile were dispersed in 30% by weight of random pressure binders (by means of a three-roll mill). Subsequently, the produced semifinished product with 60 wt.% Share with 20 wt.% Stitch printing base color Blue-Greenish 9SL 4701 S from SICPA and 20 wt.% Transparent white 9SL 0700 S from SICPA and 3 wt.% Drying material 870950 from SICPA added.
Jeweils eine Farbe wurde anschließend mit einem Farbauftrag von 10 g/m2 Farbauftragsgewicht auf Standard-Baumwollsubstrat der Firma Papierfabrik Louisenthal GmbH mittels IGT-Probedruckgerät angedruckt.One color each was then printed with an ink application of 10 g / m 2 coating weight on standard cotton substrate from the company Papierfabrik Louisenthal GmbH by means of IGT test printing device.
Aufgrund der Zusammensetzung des Bedruckstoffs und der Farbzusammensetzung ergeben sich nachfolgende Verhältnisse:Due to the composition of the printing substrate and the color composition, the following conditions result:
Der Anteil an Anatas oder Rutil liegt im Baumwollpapier zwischen 2 Gew. % bis 4 Gew. %, bezogen auf das Papiergewicht.The content of anatase or rutile in the cotton paper is between 2% by weight and 4% by weight, based on the paper weight.
Dem steht bei einem Farbauftrag auf das Substrat von 10 g/m2 Stichtiefdruckfarbe ein Anteil von 4,2 g bzw. 4,2 Gew. % Anatas bzw. Rutil gegenüber, wenn das spezifische Gewicht von Bindemittel, den enthaltenen Additiven und des organischen Blaupigments von 1g/cm3 angenommen wird.This is in a paint application to the substrate of 10 g / m 2 intaglio printing ink, a proportion of 4.2 g and 4.2 wt. Anatase or rutile compared, when the specific gravity of binder, the additives contained and the organic blue pigment of 1g / cm 3 is assumed.
- 11
- PolymerbanknotePolymer banknote
- 22
- Teilbereich mit HohlkügelchenPart area with hollow spheres
- 33
- Teilbereich mit RutilPartial area with rutile
- 44
- unbeschichteter Bereichuncoated area
- 55
- Substratsubstratum
- 66
- dünne Foliethin foil
- 77
- dünne Foliethin foil
- 88th
- Teilbereich mit AnatasSubarea with anatase
- 99
- Transmissionsspektrum der HohlkügelchenTransmission spectrum of the hollow spheres
- 1010
- Transmissionsspektrum AnatasTransmission spectrum Anatas
- 1111
- Transmissionsspektrum RutilTransmission spectrum rutile
Claims (15)
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DE102013010681.8A DE102013010681A1 (en) | 2013-06-26 | 2013-06-26 | safety substrate |
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EP2818326B1 EP2818326B1 (en) | 2016-09-28 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0659935A2 (en) | 1993-12-24 | 1995-06-28 | Giesecke & Devrient GmbH | Process and apparatus for providing security paper with security elements |
EP0942031A1 (en) * | 1998-03-10 | 1999-09-15 | Mitsubishi Polyester Film Corporation | White polyester film |
WO2003054809A2 (en) | 2001-12-10 | 2003-07-03 | Giesecke & Devrient Gmbh | Methods and devices for verifying the authenticity of sheet-type products |
DE10160580A1 (en) | 2001-12-10 | 2003-07-17 | Giesecke & Devrient Gmbh | Method for testing banknote validity using ultraviolet light, whereby banknotes are illuminated with both UV and visible light and the ratio of reflected light determined to negate the effects of dirt on the note surfaces |
EP2453418A1 (en) * | 2010-11-12 | 2012-05-16 | Beb Industrie-Elektronik AG | Method and device for assessing the authenticity of bank notes with security windows |
US20130077169A1 (en) * | 2011-09-23 | 2013-03-28 | Ppg Industries Ohio, Inc. | Hollow particle crystalline colloidal arrays |
-
2013
- 2013-06-26 DE DE102013010681.8A patent/DE102013010681A1/en not_active Withdrawn
-
2014
- 2014-06-23 EP EP14002147.8A patent/EP2818326B1/en not_active Not-in-force
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0659935A2 (en) | 1993-12-24 | 1995-06-28 | Giesecke & Devrient GmbH | Process and apparatus for providing security paper with security elements |
EP0942031A1 (en) * | 1998-03-10 | 1999-09-15 | Mitsubishi Polyester Film Corporation | White polyester film |
WO2003054809A2 (en) | 2001-12-10 | 2003-07-03 | Giesecke & Devrient Gmbh | Methods and devices for verifying the authenticity of sheet-type products |
DE10160580A1 (en) | 2001-12-10 | 2003-07-17 | Giesecke & Devrient Gmbh | Method for testing banknote validity using ultraviolet light, whereby banknotes are illuminated with both UV and visible light and the ratio of reflected light determined to negate the effects of dirt on the note surfaces |
EP2453418A1 (en) * | 2010-11-12 | 2012-05-16 | Beb Industrie-Elektronik AG | Method and device for assessing the authenticity of bank notes with security windows |
US20130077169A1 (en) * | 2011-09-23 | 2013-03-28 | Ppg Industries Ohio, Inc. | Hollow particle crystalline colloidal arrays |
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EP2818326B1 (en) | 2016-09-28 |
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