EP3247570A1 - Data storage medium having a window security thread - Google Patents
Data storage medium having a window security threadInfo
- Publication number
- EP3247570A1 EP3247570A1 EP16700384.7A EP16700384A EP3247570A1 EP 3247570 A1 EP3247570 A1 EP 3247570A1 EP 16700384 A EP16700384 A EP 16700384A EP 3247570 A1 EP3247570 A1 EP 3247570A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- micro
- windows
- window
- thread
- security
- 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
- 238000013500 data storage Methods 0.000 title abstract 2
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 13
- 238000001746 injection moulding Methods 0.000 claims description 23
- 239000000835 fiber Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 description 19
- 239000010410 layer Substances 0.000 description 17
- 238000013461 design Methods 0.000 description 10
- 230000001788 irregular Effects 0.000 description 9
- 229920001410 Microfiber Polymers 0.000 description 7
- 239000003658 microfiber Substances 0.000 description 7
- 238000004049 embossing Methods 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 239000000969 carrier Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 4
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 2
- 238000003698 laser cutting Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010146 3D printing Methods 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000010894 electron beam technology Methods 0.000 description 1
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- 238000003384 imaging method Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000110 selective laser sintering Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
- B42D25/30—Identification or security features, e.g. for preventing forgery
- B42D25/351—Translucent or partly translucent parts, e.g. windows
-
- 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
- B42D25/333—Watermarks
-
- 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
- B42D25/355—Security threads
Definitions
- the invention relates to a data carrier, in particular a value or security document, comprising a substrate comprising at least one paper layer with an embedded window security thread.
- the invention also relates to a dewatering screen for the manufacture of security paper with a window security thread.
- Data carriers such as banknotes, stocks, bonds, certificates, vouchers, checks, high-quality admission tickets, but also other forgery-prone papers, such as passports or other identity documents, are often provided with security elements for the purpose of security, which permit verification of the authenticity of the value document and which also serve as protection against unauthorized reproduction.
- the security elements can be designed in the form of a security thread which is wholly or partly embedded in the data carrier.
- a security thread in banknote paper is described for example in WO 2004/050991 AI.
- the security thread is unrolled from a driven roller and a constant mechanical tension is ensured by monitoring the tensile force of the security thread.
- Window security threads are security threads that are neither applied to a surface of a data carrier substrate nor fully embedded in the substrate. Rather, they are partially embedded in the substrate such that they are visible on one or both opposite surfaces of the substrate only in certain windows.
- bronze mesh fabrics with brass stamping dies are generally made into a mold with several The webs are brought to create contact surfaces for the security thread to be introduced in papermaking. From the designer's perspective, however, the possible designs are very limited and all known types of window threads have windows which are open over the entire thread width.
- the present invention seeks to provide a data carrier of the type mentioned above with an attractive appearance and high security against counterfeiting.
- the invention is also intended to provide a suitable apparatus and method for making such data carriers.
- the window regions comprise at least one group of several microfine stars juxtaposed in the transverse direction of the thread, which are produced by paper-making and have an edge produced during papermaking with characteristic irregularities.
- window security thread is used in the present description not only for narrow security threads with a width of 4 mm or less, but also for wide security threads with a width of 4 mm to about 30 mm, which in the patent literature sometimes as security tapes be designated.
- the embedding of such broad security threads in papermaking is described, for example, in the publication EP 0 625 431 A1.
- all window areas of a data carrier can be designed in the form of micro-windows or the data carrier can also have conventional window areas in addition to micro-windows.
- the window areas may not only comprise a named group, but rather several groups of adjacent micro windows are advantageously provided. It is even possible that all microphone windows are part of one or more such groups.
- the window regions comprise at least one group with three or more, preferably five or more, micro-fiber stars adjacent to one another in the transverse direction of the thread.
- the reduced offset is advantageously as different as possible for different microphone windows in order to optimally utilize the available offset clearance under the boundary condition of a juxtaposed position of the microphone windows.
- the micro-windows advantageously have a minimum offset of at least 6 ma x / (Nl) against each other, so that is
- the width of the micro-windows of the at least one group is advantageously less than 50%, preferably less than 40%, particularly preferably less than 30% of the thread width, in the transverse direction of the thread.
- the length of the micro-windows parallel to the yarn longitudinal direction (sometimes also referred to as the height of the micro-windows) is advantageously between 0.2 mm and 4 mm, preferably between 0.3 mm and 3 mm and particularly preferably between 0.5 mm and 1 mm.
- the width of the micro-windows in the transverse direction of the thread is preferably between 0.2 mm and 4 mm, preferably between 0.3 mm and 3 mm, particularly preferably between 0.5 mm and 1 mm.
- the at least one group preferably comprises micro-windows whose outlines represent patterns, characters or an encoding, in particular a letter or number sequence, such as a currency symbol or a value number.
- the micro-windows can also be designed in the form of a facial or portrait representation.
- the window areas comprise a plurality of microfine stars whose spatial arrangement forms a motif.
- the individual micro-windows are not necessarily formed even in motif form, but said motif is formed by the arrangement of the totality of micro-windows.
- Such a motif may consist in particular of letters, characters or figures which are composed of the micro-star stars as small building blocks.
- the outlines of the micro-windows can be the same or different. It is also possible that both the outlines of the microphone windows and their spatial arrangement each represent a motif or information. These motifs or information may be related or mutually exclusive to supplement a total information.
- the micro windows can also form screened, point cloud or strip windows.
- the micro windows as thin spots in the paper layer of the substrate are part of a laterally projecting beyond the window security thread watermark.
- the microphone windows can be integrated into a comprehensive design of the data carrier, so that the attention value and the imitation security further increases.
- the watermark may supplement, continue or repeat in the same or modified form a motif formed by the outline or the spatial arrangement of the microfine windows.
- a motif formed by the outline or the arrangement of the micro-windows is continued by any other security feature beyond the window security thread.
- the other security feature may consist, for example, in a print layer, a color layer, a laser cut area, a watermark, a film or a hologram.
- the other security feature can complement a motif formed by the outline or the arrangement of the micro-windows, continue or repeat in the same or modified form.
- the window security thread is advantageously provided with diffraction structures, liquid crystal layers, thin-film structures, recesses in opaque, in particular metallic layers, fluorescent substances, magnetic, conductive and / or metallic layers.
- the invention also includes a dewatering screen for the manufacture of security paper with a windowed security thread that on certain Window areas on a surface of the security paper emerges and is embedded in intermediate areas inside the security paper.
- the dewatering screen comprises a carrier screen which is provided in an area with an injection-molded insert, which has a relief with upwardly extending from a base body and the surface of the support screen protruding motif elements, which are formed in the form of window portions of the window security thread.
- the motif elements comprise at least one group of a plurality of micromotif elements juxtaposed transversely to the running direction of the thread to be embedded in order to produce microfine stars.
- the invention further includes a dewatering screen of the above-mentioned type, in which the dewatering screen comprises a carrier screen which has a screen embossment in a partial area which has a relief with motif elements projecting beyond the surface of the carrier screen, which are formed in the form of the window areas of the window security thread ,
- the motif elements comprise at least one group of a plurality of micromotif elements juxtaposed transversely to the running direction of the thread to be embedded in order to produce microfine stars.
- the micromotif elements have a width transversely to the running direction of the thread to be embedded which is less than 50% of the thread width and lies between 0.2 mm and 4 mm.
- the motif elements preferably comprise micromotif elements whose outlines represent patterns, characters or a coding, in particular a letter or number sequence.
- the motif elements comprise a plurality of Micromotif elements whose spatial arrangement forms a motif, in particular letters, characters or figures.
- the injection molding insert or the screen embossing has a watermark relief in the form of a watermark to be generated in the security paper in addition to the motif elements for producing the window regions of the window security thread.
- the watermark relief can supplement, continue or repeat in the same or modified form a motif formed by the outline or the arrangement of the micromotif elements.
- a hydrophobic plastic such as polyoxymethylene.
- the plastic may be added with wear-reducing additives.
- the injection-molded insert is preferably arranged in a cut-out region of the carrier screen and connected thereto only in a preferably serrated edge region.
- a recess can be produced which is slightly smaller, for example 1/10 mm smaller than the desired shape of the injection molding insert.
- the edge region can be designed in particular in the form of a pattern, preferably in a serrated form. In this cut-out portion of the injection molding insert can be inserted or preferably injected.
- the carrier screen advantageously comprises a screen fabric with at least one system of interwoven, longitudinally extending warp threads. yarns and transversely extending weft threads, wherein the screen fabric advantageously contains either a metal fabric, in particular a bronze fabric, a metal-plastic mixed fabric, in particular a bronze-plastic blended fabric, or a pure plastic fabric.
- the injection molding insert preferably has a plurality of perforations, which ensure drainage during papermaking.
- the dimensions of these drainage perforations are chosen so small that they do not adhere to fibers during papermaking.
- Typical perforation diameters are between 100 ⁇ and a few 100 ⁇ , for example about 500 ⁇ ⁇ .
- the perforations taper towards the uppermost design surface of the injection molding insert or the perforations are formed waisted.
- an injection molding tool can be used which contains an injection molding cavity into which plastic can be injected to produce the injection molding insert and which is provided with a multi-level tool relief in the form of the inverted injection molding relief.
- the injection molding tool including the injection molding cavity and the high-resolution multi-stage tool relief can be formed by milling or by an additive manufacturing process as a layer sequence of a plurality of firmly interconnected material layers.
- an embossing stick can be used which is provided with a high-resolution multi-level relief in the form of the inverted screen embossing.
- the embossing stick including the high-resolution multilevel relief can be sen or be formed by an additive manufacturing process as a layer sequence of a plurality of firmly interconnected material layers.
- selective laser sintering selective laser melting, electron beam melting, 3D printing with powder, melt stratification, laser deposition welding, multi-jet modeling, a polyjet process, stereolithography, laminated object modeling, film transfer imaging or digital light processing are used as additive manufacturing processes consideration. Further details on the structure, properties and production of the injection molding tool or die can be found in the application
- FIG. 1 is a schematic representation of a banknote with a security element according to the invention in the form of a window security thread
- FIG. 2 is a detailed view of window areas with micro-star of a banknote according to the invention in supervision
- 3 is a diagram for more detailed description of the offset of the micro-windows of a group
- FIG. 7 and 8 each show a schematic representation of a dewatering screen according to the invention, which is used for the production of micro-windows,
- FIG. 9 shows plan views of a banknote with a plurality of microfibers arranged in ensembles of micro-star stars in the form of a euro symbol, wherein (a) a single ensemble of micro-star and (b) a plurality of ensembles spaced apart in the thread longitudinal direction and offset in the cross-thread direction from micro star shows, and
- FIG. 10 shows a design in which the design of a series of paper-microfabricated microfibres outside the security thread is continued by a print pattern.
- FIG. 1 shows a schematic representation of a banknote 10 with a paper substrate 12, which is provided with a window security thread 14 according to the invention.
- the window security thread 14 has a thread longitudinal direction L extending in the longitudinal direction and a thread transverse direction Q perpendicular thereto and protruding in window areas 16 on the surface of the bank note 10, while He is embedded in intervening web areas 18 in the interior of the banknote 10.
- window regions 16 of the window security thread 14 are shown schematically as rectangles.
- the window regions 16 comprise, according to the invention, microfine windows 20 produced by paper making, which in the exemplary embodiment are in the form of small stars with an irregular deckle edge 22.
- the micro-windows 20 reveal the view of the window security thread 14 embedded in the paper, so that the security features arranged on the window security thread 14, for example a diffraction structure or a color-shifting layer, become visible there.
- the window security thread 14 is covered by the paper layer 12 and therefore the security features arranged thereon are not visible.
- microfibers 20 were produced in papermaking as described below, they have an edge 22 with characteristic irregularities, which is often referred to as deckle edge in this specification.
- the irregular edge structure arises from an irregular accumulation of fibers in the edge region and by protruding into the hole of individual fibers.
- the window areas comprise a plurality of groups 30 of microfibers, each of which has a plurality of side by side threads Q in the yarn transverse direction Q.
- lying micro-windows 20 include.
- the juxtaposition of micro-starlets in the transverse direction means more precisely that there is a straight line g in the yarn transverse direction Q which intersects all the group 30 micro-windows. For one of the three groups shown in FIG. 2, such a straight line g is drawn.
- the micro-windows of a group 30 can all be at the same height, but preferably, as in FIG. 2, the micro-windows 20 of a group 30 are offset from one another in the thread longitudinal direction L and thus are adjacent to one another, but not at the same height.
- FIG. 3 shows two micro-windows 20-i, 20-j of a group 30 of micro-windows adjacent to one another in the transverse yarn direction Q and a straight line g which intersects all the micro-windows of the group 30.
- the height hi of a micro window 20-i is the dimension of the micro window in the longitudinal direction L.
- a center line 24-i can be specified, which halves the extension of the micro window in the longitudinal direction L and lies parallel to the line g.
- the offset di of a micro-window 20-i is then the preemptive distance of the center line 24-i of this micro-window from the straight line g, as shown in FIG.
- a stronger togetherness impression of a group arises when the micro-windows of the group have a smaller maximum reduced distance ömax from the straight line g, ie
- ⁇ 6 m ax, for i 1, 2, .... N, with ömax ⁇ 0.5. Values of 6 m ax between 0.2 and 0.4 have proven to be advantageous.
- micro-windows 20-i in a group, it is also advantageous if the various adjacent micro-windows 20-i have as different a reduced offset as possible, since then the available offset latitude under the boundary condition of a juxtaposed position is optimally utilized.
- N micro-windows which should have a maximum reduced distance ömax from the straight line g, advantageously have a minimum offset of at least 6 ma x / (Nl) from each other, ie, it applies
- the mutual minimum offset must be reduced, but is advantageously still greater than 6 m ax / (Nl).
- the individual micro-windows can then be arranged, for example, with reduced offset values of 0.25, 0.15, 0, -0.12, and -0.3, and then have an irregular distributed mutual offset, which, however, is at least 0.1.
- the micro-windows 20 of the groups 30 are arranged with the reduced offset values 0.25, 0 and -0.25, ie they have the maximum possible minimum offset of
- Fig. 4 shows a further embodiment of the invention, in which the groups 30 each contain nine or ten microphone windows 20, which are arranged regularly and at the same height in rows of three.
- a straight line g is drawn, which intersects all the microphone windows 20 of the group.
- the micro-windows 20 are formed in this embodiment in the form of small circular disks with a diameter of only 0.2 mm. Even if the individual micro-windows 20 are very small, the totality of the micro-windows of the groups 30 nevertheless allows a clear view of the window-security thread 14 embedded in the paper, so that its security features can appear.
- Another very decorative embodiment is shown in FIG.
- the micro windows 26, 28 of the group 30 are formed in the form of partially cut wavy lines.
- the micro windows 26, 28 of the group 30 have neither all the same shape nor the same size.
- the drawn line g intersects six microphone windows 26, 28, so that these micro windows are thus juxtaposed in the sense of this description and form a group of 30 adjacent microphone windows.
- the upper and lower triangular microphone windows 26 are not adjacent to each other since there is no straight line in the cross-thread direction that would cut all of these micro windows.
- the upper triangular micro-windows together with the wavy micro-star 28 form a group of adjacent microphone windows. It is thus also possible that some micro-windows, such as the micro-windows 28, belong to more than one group of adjacent micro-windows.
- the triangular micro window 26 has a width that is significantly smaller than the thread width (b 26 ⁇ 0.1 bF), the wavy micro window 28 occupy almost the entire thread width (b 28 « 0.9 bF). Also in this embodiment, the micro-windows 26, 28 release the view of the embedded in the paper window security thread 14 and allow its security features to appear.
- the paper-making micro-windows 20 are each designed in the form of a motif, namely in the form of the adjacent digits "1" and "5" in the thread transverse direction, which together form the number sequence "15".
- the width bM of the microfine window 20 is significantly smaller than the thread width bF, which is for example 4 mm, and is in the execution example, only about 1 mm (25% of the thread width, digit "1") or
- the height h M of the micro window 20, so the extension in the yarn longitudinal direction L is about 2 mm and is therefore also substantially smaller than the window areas in conventional window filaments.
- banknote 10 can also have conventional window areas in addition to window areas with the described micro-windows 20. However, since these are known, will not be discussed in detail in the present application.
- the drainage screen 60 shown schematically in FIG. 7 in a section transverse to the thread running direction is used.
- the dewatering screen 60 comprises a carrier screen 62 with a screen mesh 64, which is cut out in a subregion 40.
- the screen fabric 64 has at least one system of interwoven longitudinally extending warp yarns 66 and weft yarns 68 extending transversely thereto.
- the screen fabric for example, a metal fabric, in particular a bronze fabric, a metal-plastic blended fabric, in particular a bronze-plastic blended fabric, or even a pure plastic fabric included.
- the support screen 62 can contain both a single-layer and a multi-layer screen fabric, with only a single-layer screen fabric being shown in the figure for the sake of simplicity.
- a plastic injection-molded insert 50 is arranged, which is connected at its edge to the mesh 64.
- the connection can be made in a variety of ways, for example by plastic overmolding or back-spraying, by means of a plurality of fastening knobs arranged along the edge, or by welding or gluing.
- the injection molding insert 50 is injected with a corresponding tool shape directly into the cut-out portion 40 of the mesh fabric 64 and thereby enters into a particularly intimate connection with the mesh.
- the injection-molded insert 50 has a relief 52 in the form of the window areas 16 of the window security thread 14 and contains a base body 54, from which starting motif elements in the form of the window areas 16 extend upwards and project beyond the screen surface. It is essential for the present invention that the motif elements contain small micromotif elements 56, which are formed in the shape and size of the microfibres 20 and extend upwards with a sharp edge.
- the relief 52 is produced by means of milling, so that the flanks 57 of the small micromotif elements 56 enclose an angle of approximately 15 ° with the surface normal.
- the security thread 14 to be embedded is fed as an endless element from a bobbin via a deflection roller to the dewatering screen 60 with the injection molding insert 50.
- the security thread 14 rests on the motif elements and in particular also on the micromotif elements 56 of the injection molding insert 50. Since a negative pressure prevails in the interior of the dewatering screen 60, the water of the water-fiber dispersion of the pulp is sucked into the interior of the dewatering screen. The fibers deposit on the surface of the dewatering screen 30 and the injection-molded insert 50 and form the desired paper web.
- the security thread 14 rests on the motif elements or the micromotif elements 56, the security thread is sucked by the negative pressure to the dewatering screen, so that there can accumulate no fiber mass. Accordingly, the security thread 14 remains free of fiber material in the regions of the motif elements or of the microphoto elements 56, while paper fibers accumulate in the surrounding regions and embed the security thread 14 in the paper.
- the motif elements or the micromotif elements 56 therefore generate just the desired window over oak or micro-window 20 in the forming paper layer.
- the edge region 22 of the micro-windows is not completely sharp, as in the case of subsequent production of holes by means of punching or laser cutting. Rather, 20 fibers are deposited in the edge region of the micro-window, which project into the opening in an irregular manner and thereby produce the characteristic deckle edge.
- the extent of edge sharpness or edge blurring of the microfine window 20 can be predetermined by the three-dimensional shape of the micromotif elements 56.
- Micromotif elements such as the micromotif elements 56 of FIG. 7, which have very steep flanks 57 and a small edge width, produce marginal regions 22 with minor irregularities, while micromotif elements with flatter flanks and larger marginal width, such as those in FIG 8, micromesh elements 20 with strongly irregular edge regions 22 are produced.
- the edge width of a micromotif element is the width within which the height of a micromotif element falls from 90% of the maximum height to 10%.
- Micro-windows with only slightly irregular marginal areas can be created with micromotif elements 56 having a marginal width of 0.6 mm or less, 0.5 mm or less, or even 0.4 mm or less.
- micromotif elements 58 with a marginal width of more than 0.6 mm, more than 1 mm or even more than 1.5 mm can produce microfibres with strongly irregular marginal regions 22.
- the injection molding insert 50 is further provided with a plurality of perforations 48 to ensure dewatering in papermaking also in the field of injection molding.
- the diameter of the perforations 48 is chosen so small that they do not adhere to fibers in papermaking. Typical perforation diameters are between 100 ⁇ and some 100 ⁇ , for example, at about 500 ⁇ .
- Figures 9 and 10 show further advantageous embodiments of inventive micro windows in banknotes or other data carriers.
- the micro-windows 20 are formed in the form of ovals having a dimension of 0.4 mm x 0.3 mm.
- a plurality of oval micro-star 20 forms an ensemble 70, the micro-windows 20 are arranged spatially to each other so that they form together as a motif the euro symbol " €".
- the ensemble 70 includes a plurality of groups 30 of adjacent micro-star 20, wherein in each group, the micro-windows 20 are offset from each other in the thread longitudinal direction L.
- the ensemble 70 contains four groups 30, which consist of 2 or 3 micro-windows and for which the associated intersecting lines g are shown for illustration.
- the micro-windows 20 of the ensemble 70 reveal the view of the window security thread 14 embedded in the paper and allow the security features arranged thereon to be visible.
- a plurality of ensembles 70 of micro-windows 20, each in the form of the euro symbol €, are arranged spaced apart in the longitudinal direction L of the thread.
- the ensembles 70 are offset as a whole in the transverse direction Q against each other something to compensate for variations in the introduction of the security thread 14 into the paper, for example, due to wobble.
- ⁇ denotes the maximum distance by which a security thread 14 can be introduced into the security paper 12 in the transverse direction Q offset due to wobbling
- Fig. 10 shows a design in which a
- a plurality of papermaker-made micro-window 80 is disposed over a window security thread 14 and, as described above, the view of the security features of the embedded window security thread 14 releases.
- the circular disk-shaped micro-windows 80 contain a plurality of groups of microfine stars juxtaposed in the yarn transverse direction Q.
- the micro windows 80 have different sizes, but are all significantly smaller than the thread width.
- the design formed by the micro-starlets 80 is continued outside the security thread 14 by a printed pattern 82 in the form of a printed cloud of points and thereby integrated into the overall design of the banknote 10. This also significantly increases the counterfeit security of the banknote since the security thread 14 can not be replaced by a security thread without a microfine window 80 and, in addition, since the security thread 14 must be aligned correctly with the print pattern 82 in the longitudinal direction.
- a motif formed by the outline or the arrangement of the microfine windows can also be continued, for example, by a watermark.
- the micro windows which in any case represent thin areas in the paper layer of a data carrier, are preferably part of a watermark which protrudes laterally beyond the window security thread.
Landscapes
- Paper (AREA)
- Credit Cards Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16700384T PL3247570T3 (en) | 2015-01-20 | 2016-01-07 | Data storage medium having a window security thread |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015000694.0A DE102015000694A1 (en) | 2015-01-20 | 2015-01-20 | Disk with a window security thread |
PCT/EP2016/000022 WO2016116256A1 (en) | 2015-01-20 | 2016-01-07 | Data storage medium having a window security thread |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3247570A1 true EP3247570A1 (en) | 2017-11-29 |
EP3247570B1 EP3247570B1 (en) | 2018-12-12 |
Family
ID=55129826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16700384.7A Active EP3247570B1 (en) | 2015-01-20 | 2016-01-07 | Data storage medium having a window security thread |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3247570B1 (en) |
CN (1) | CN107107650B (en) |
DE (1) | DE102015000694A1 (en) |
ES (1) | ES2715579T3 (en) |
PL (1) | PL3247570T3 (en) |
RU (1) | RU2672606C1 (en) |
WO (1) | WO2016116256A1 (en) |
Families Citing this family (4)
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DE102017001347A1 (en) | 2017-02-10 | 2018-08-16 | Giesecke+Devrient Currency Technology Gmbh | Disk with window security element |
WO2019107065A1 (en) * | 2017-11-30 | 2019-06-06 | 富士フイルム株式会社 | Security element and security system |
FR3080324B1 (en) * | 2018-04-23 | 2022-04-01 | Oberthur Fiduciaire Sas | SECURE SHEET |
DE102018008162A1 (en) * | 2018-10-16 | 2020-04-16 | Giesecke+Devrient Currency Technology Gmbh | Method and device for producing security paper with window security thread |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4314380B4 (en) | 1993-05-01 | 2009-08-06 | Giesecke & Devrient Gmbh | Security paper and process for its production |
GB9828770D0 (en) * | 1998-12-29 | 1999-02-17 | Rue De Int Ltd | Security paper |
GB2395959B (en) | 2002-12-05 | 2004-11-10 | Rue De Int Ltd | Method and apparatus for manufacturing a fibrous substrate incorporating an el ongate element |
DE102010019766A1 (en) * | 2010-05-07 | 2011-11-10 | Giesecke & Devrient Gmbh | Method for producing a microstructure on a support |
DE102010025775A1 (en) * | 2010-07-01 | 2012-01-05 | Giesecke & Devrient Gmbh | Security element and value document with such a security element |
FR2976954B1 (en) * | 2011-06-23 | 2013-07-12 | Arjowiggins Security | SECURITY WIRE |
FR2979641B1 (en) * | 2011-09-07 | 2013-09-27 | Oberthur Technologies | SAFETY BAND AND DOCUMENT THAT CONTAINS |
US9834029B2 (en) * | 2011-09-20 | 2017-12-05 | Bank Of Canada | Security display devices, their production and use |
CN103358808B (en) * | 2012-03-28 | 2015-12-16 | 中钞特种防伪科技有限公司 | A kind of optical anti-counterfeit element and use the product of this optical anti-counterfeit element |
DE102012014894A1 (en) * | 2012-07-27 | 2014-01-30 | Giesecke & Devrient Gmbh | dewatering |
DE102013008082A1 (en) * | 2013-05-10 | 2014-11-13 | Giesecke & Devrient Gmbh | Value and security document with a watermark and security thread |
DE102014008752A1 (en) | 2014-06-12 | 2015-12-17 | Giesecke & Devrient Gmbh | Injection molding tool and embossing stick for use in the production of watermark paper |
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2015
- 2015-01-20 DE DE102015000694.0A patent/DE102015000694A1/en not_active Withdrawn
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2016
- 2016-01-07 WO PCT/EP2016/000022 patent/WO2016116256A1/en active Application Filing
- 2016-01-07 CN CN201680005105.3A patent/CN107107650B/en active Active
- 2016-01-07 RU RU2017122607A patent/RU2672606C1/en active
- 2016-01-07 PL PL16700384T patent/PL3247570T3/en unknown
- 2016-01-07 ES ES16700384T patent/ES2715579T3/en active Active
- 2016-01-07 EP EP16700384.7A patent/EP3247570B1/en active Active
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RU2672606C1 (en) | 2018-11-16 |
CN107107650A (en) | 2017-08-29 |
EP3247570B1 (en) | 2018-12-12 |
DE102015000694A1 (en) | 2016-07-21 |
PL3247570T3 (en) | 2020-01-31 |
WO2016116256A1 (en) | 2016-07-28 |
ES2715579T3 (en) | 2019-06-04 |
CN107107650B (en) | 2019-05-07 |
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