Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
  • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
  • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
  • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
  • B42D25/29—Securities; Bank notes
• • B42D2033/22—
• • B42D2035/20—
• • B42D2035/36—
• • B42D2035/44—

Definitions

• the invention relates to a security document and to a method for its production, in particular a security document having at least one security feature, which is optically verifiable and has different optical effects depending on the viewing side of the security document.
• Security documents include, for example, ID documents, passports,
• Security documents embodying a value such as postage stamps, securities or banknotes, are also referred to as value documents.
• Security feature transmitted or reflected at this reflected or remitted light are verifiable.
• all electromagnetic radiation which may be in the visible, infrared or ultraviolet wavelength range.
• volume holograms in particular reflection volume holograms, which underlie from the one viewing side when illuminated with white light under a predetermined direction of illumination make detectable at least one direction a detectable stored in the hologram image.
• volume holograms in particular reflection volume holograms, which underlie from the one viewing side when illuminated with white light under a predetermined direction of illumination make detectable at least one direction a detectable stored in the hologram image.
• Another set of security features is formed in security documents by having a plurality of lens elements spaced apart from in
• Security document stored optically perceptible information is formed.
• An example of this is the so-called CLI (Changeable Laser Image) and MLI (Multiple Laser Image) features, which have a viewing angle dependence when viewed from a side where the lenses are located between the viewer and the stored information. When viewed from the other side where the information stored in the document is before the CLI (Changeable Laser Image) and MLI (Multiple Laser Image) features, which have a viewing angle dependence when viewed from a side where the lenses are located between the viewer and the stored information. When viewed from the other side where the information stored in the document is before the
• Lens elements are arranged, this angle-dependent effect is not perceived by the viewer, since the lenses in this case, a light propagation from the information stored in the document to the viewer not
• microchannels are arranged as additional security and authenticity proof.
• microchannels are introduced at different angles with respect to a surface normal of the layers from which the security document is formed.
• a recording medium which has an upper layer which has on its outer side a plurality of lenticular lenses and on the back a display element which appears to be movable about at least one axis when the recording medium is tilted.
• the lenticular lenses extend only over a portion of the entire outside.
• the presentation element is a
• Contact area is as large as or larger than the top or bottom of the substrate.
• DE 10 2008 031 653 A1 discloses a method and a device for introducing a security feature into a security document, wherein the security document comprises a document body having at least one thermoplastic surface layer, the method comprising the steps of: providing the security device documents body; Providing and / or creating a structured sonotrode that is or will be coupled to a sound source; Arranging the document body relative to the sonotrode; Contacting the sonotrode and the surface layer of the document body and simultaneous coupling of sound waves through the sonotrode in the value or security document, so that a
• Relief structure in the surface layer is formed, wherein the sonotrode with a
• Structure is provided and / or manufactured, which has a target receiving ring level and the sonotrode is structured so that from the target entry level
• the sonotrode is moved during the sound injection by applying pressure in the document body until the target intrusion plane with a
• Document body surface target level coincides and the projecting portions recessed relief structures and the recessed areas create protruding relief structures in the surface layer.
• a card-shaped data carrier with a substrate and at least one transparent cover film is known.
• the substrate is provided with information detectable by the cover sheet using a laser beam, the transparent cover sheet carrying a relief applied at least partially overlapping the information area prior to recording the information, which characteristic changes the information recording by virtue of its optical lens action.
• the information is stored at different locations in the substrate. Likewise at a Visual inspection perceived different information as a function of a viewing angle.
• Volume range information is introduced by means of a laser beam, which are visible in the form of changes in the optical properties due to an irreversible, caused by the laser beam material change.
• card-shaped data carriers which have a lenticular grid on a surface are described.
• the lenticular grid can be embossed during a laminating process by incorporating a negative of the lenticular grid into a corresponding laminating plate.
• a thermostable embossing die can be used, which is inserted between the transparent cover layer and the lamination plate.
• the card can be produced by means of a lamination process and the lenticular screen is subsequently introduced by means of an embossing punch or embossing roller.
• the information is introduced via a laser beam, which introduces information through the lens grid into the card body under different directions. This makes it easy to implement tilt pictures.
• microlenses in particular relative to the same time introduced in a lamination process microlenses is insufficiently guaranteed.
• the person skilled in the art is aware of other different security features which show an optical effect which depends on the viewing side.
• diffractive and refractive structures that are located on a surface or in the interior of the
• Security document can be formed, can cause such effects.
• the invention is based on the idea to provide a security document, a method for its production and a verification method in which a
• Security document can be used, which at the same time has at least one opaque layer.
• a document body which often consists of different layers of plastic
• At least one opaque layer comprises, for example, to prevent a view in at least some areas of the document. While it is basically possible to have a document from a variety of transparent
• Material layers for example, in a lamination process, and to print one of the otherwise transparent substrate layers over a large area to create an opaque background for other arranged in other layers information and / or security features.
• large area printed substrate layers are often vulnerable to delamination, i. a separation of the document body at an originally existing layer edge represents. Therefore, it is desirable to provide the opaque layer by integrating a self-supporting, volume-opaque layer.
• a security document which comprises: a document body having a front side and an opposite rear side, wherein the document body of the using at least one surface
• Document body is at least one optically verifiable security feature is formed, which has different optical effects with respect to a view over the front and a view on the back, wherein in the opaque layer, a plurality of openings formed and arranged so that an optical detection of the at least one optically verifiable
• Such a security document having a document body having a front side and an opposite back side can be verified by a method comprising the steps of detecting an optical effect of at least one security feature when the security feature is viewed through the front side, and detecting another optical effect when viewing the same by the backside at least one security feature, one of the two considerations being performed as a look through view, wherein the viewing of the at least one security feature is accomplished by a plurality of apertures in a planar, self-supporting, opaque layer formed in the document body is integrated, and the other of the two considerations is performed as a direct observation in which the viewing is not performed by the plurality of apertures of the opaque layer, and comparing the detected optical effect and the further detected optical effect and deriving a
• a method comprising the steps of: inserting a plurality of apertures into an opaque self-supporting layer; Integrating the opaque layer having the plurality of apertures into a document body having a front side and an opposite rear side; Forming at least one optically verifiable security feature in the document body in such a way, wherein the at least one optically verifiable security feature is formed and arranged with respect to the plurality of openings, that an optical detection of the at least one optically verifiable security feature both in a view through the front and is possible when viewed through the back, wherein one of the two considerations is a review, which is done through the openings in the opaque layer and the other is a direct view, which does not occur through the openings, and the at least one optically verifiable security feature is formed in that this different optical effects with respect to a front view and a consideration of the
• a novel security document and a novel method for the production of a security document are provided, which permits reliable verification, as a rule, without the aid of further aids.
• a layer which opposes a transmission of light in a certain wavelength range almost completely is called opaque. It will be understood by those skilled in the art that the term opaque refers to each wavelength range of light that is relevant to verification of a corresponding optically verifiable security document. Can an optically verifiable
• the opaque layer is of course ultraviolet
• the opaque layer is considered to be opaque at least in the wavelength range whose light is detected during verification.
• plastic base of several plastic layers.
• Suitable plastic materials are, in particular, those which are based on a polymer material from a group comprising PC (polycarbonate, in particular biphinol A polycarbonate), PET (polyethylene terephthalate), PMMA (polymethyl methacrylate), TPU (thermoplastic polyurethane elastomers) PE (polyethylene) , PP (polypropylene), PI (polyimide or polytransisopropene), ABS (acrylonitrile-butadiene-styrene), PVC
• PC polycarbonate, in particular biphinol A polycarbonate
• PET polyethylene terephthalate
• PMMA polymethyl methacrylate
• TPU thermoplastic polyurethane elastomers
• PE polyethylene
• PP polypropylene
• PI polyimide or polytransisopropene
• ABS acrylonitrile-butadiene-styrene
• the document body may also comprise other materials, such as pulp based, such as paper or the like. Further, a document body may have other elements, such as
• Metal foils, metal strips, exposed hologram films, but also microelectronic components such as microchips, devices or the like can be integrated.
• Particularly preferred document body are designed as card-shaped documents whose areal extent at a front and an opposite
• Rear is much larger than a distance between the front and the back.
• a through-hole is denoted by the layer.
• the opening need not be filled with a material whose material properties differ at least from the material through which an opening is formed.
• perforations in particular microholes are considered, which are formed as perforations.
• the plurality of openings is formed only in a localized area of the opaque layer.
• the openings can be introduced by means of a laser perforation in the opaque layer.
• a laser perforation in the opaque layer.
• focused laser radiation is directed onto the opaque layer, which is usually generated pulsed.
• the laser radiation is able to introduce sufficient energy into the opaque layer locally
• Breakthroughs are formed in the film.
• a shape of a cross-sectional area of the openings can be varied within wide limits. Preference is given to circular or elliptical
• the apertures are arranged in a grid in order to achieve the highest possible transparency in the region of the majority of the introduced apertures of the opaque layer.
• a grid is used, which is created from hexagonal cells. At each grid point an opening is formed. In this way, transparencies of up to about 60% can be
• those introduced into the opaque layer are those introduced into the opaque layer.
• backfilling takes place with a plastic material made from the same base stock as the opaque layer, but having a different opacity. Becomes a plastic material made from the same base stock as the opaque layer, but having a different opacity. Becomes a plastic material made from the same base stock as the opaque layer, but having a different opacity. Becomes a plastic material made from the same base stock as the opaque layer, but having a different opacity. Becomes a
• Document body for example, made of several layers of film, which on Base are made of polycarbonate, of which the opaque layer is colored in volume, the introduced openings are filled, for example, with a transparent polycarbonate-containing material. This can be scribed, for example, in liquid form.
• Base material of the adjacent layers differs in the finished document body, so it is advantageous to fill the openings with a material which is similar to the base material of the adjacent layers. As a result, reliable lamination compounds are formed through the apertures.
• Document body is made.
• the layer boundaries can then be recognized only on the basis of insinuations, which, for example, determine the opaque property of the material layer.
• the novel security feature results from the combination of a see-through window formed by the openings in the opaque layer with a
• Security feature showing different, contingent effects.
• diffractive structures can be used as security features because an observable effect is contingent-side dependent.
• volume holograms are particularly preferred since, because of the high color and angle selectivity, they can also be reproduced with white light, ie light of a continuous spectrum. While from a viewing page the
• Reflection hologram the information is reconstructed in reflection under a particular viewing and illumination geometry is of the opposite
• the transmitted light is deprived of the light of the particular wavelength which is reflected by the hologram.
• CLI CLI
• MLI multi-dimensional array of lens elements and spaced therefrom optically visible marks in the document body.
• Lens elements are preferably embossed into an outer surface of the document body.
• the embossing can be done for example via a preformed lamination during the lamination process.
• the lens array covers only a portion of the surface so as not to hinder the perception of other security features that may be integrated into the document body.
• the lens array is formed above or below the plurality of openings.
• a particularly preferred method for forming the lens array is a
• Embossing method in particular an ultrasonic embossing method, wherein a sonotrode with coupling of ultrasound with the surface of a film or as
• Composite body prefabricated document body blank is brought into contact and this the lens structure is impressed into the surface.
• the sonotrode can be pressurized in addition to the application of ultrasound.
• the information stored in the document body can, for example, via a laser marking in an inner material or substrate layer of the
• Document body are introduced.
• the already formed lens structures are used to direct laser light under different directions onto the lens structures and to mark information in a material layer underlying the lens structure.
• This layer of material may contain substances which promote absorption of laser light in this layer without appreciably restricting transparency.
• the marking via a carbonization then takes place, for example, only in such a layer.
• the other layers of the same plastic base material pass the marker light. Darkening then takes place in the focus points to which the individual lenses of the lens structure focus the incident light. Since the focus varies depending on the direction of irradiation relative to a main lens axis in the document, it is possible to store different information in the document body under different irradiation directions.
• Viewing directions are recorded. If the opaque layer is below the stored information viewed from the upper side, in which the lens structures are formed, different information components are to be detected in a direct viewing of the information as described above, depending on the viewing angle. However, if one sees the security feature looking through from the opposite side of the document body, one obtains a static information of the introduced via the laser marking in the document information.
• a preferred security document is thus characterized in that a viewing angle dependence of the review and the direct view is different.
• the at least one optically verifiable security feature comprises a plurality of lens elements to which a visually perceptible information is stored at a distance in the document. This storage can take place, for example, via a laser marking, in particular a carbonization of a part of the transparent plastic.
• the visually perceptible information can also be applied to an internal, otherwise transparent substrate layer to be printed and the lens elements are aligned aligned with the printed information in the document body.
• the lens elements are not formed on the surface of the document body, but on the inside. For this the must
• Lens structure initially in a transparent film for example by means of a
• the resulting surface relief structure is filled by a transparent plastic material, which in the finished document body, for example, after a lamination process in which different layers are connected to each other to the document body, a different optical refractive index of the material from which the layer is formed, in the the lens structure is first impressed.
• a transparent plastic material which in the finished document body, for example, after a lamination process in which different layers are connected to each other to the document body, a different optical refractive index of the material from which the layer is formed, in the the lens structure is first impressed.
• the lens structure, the information stored in the document as well as the through-window formed by the plurality of openings in the opaque layer can be arranged to each other such that, for example, a
• Review view of the security feature is viewing angle dependent and the direct consideration of the security feature provides a static information.
• the direct consideration shows an angle dependence and the reviewing shows a static information.
• FIG. 1 shows a schematic representation of a security document with a CLI security feature and a see-through window formed over a plurality of openings in an opaque layer;
• Figures 2a-2e different views of the security document of Fig. 1;
• Reflection volume hologram as a security feature and a through window formed in an opaque layer through-window comprises;
• FIGS. 4-6 show various embodiments of security documents with a CLI / MLI security feature and a see-through window formed through openings in an opaque layer;
• FIG. 7 shows a schematic representation of a security document with a
• FIG. 8 shows a schematic representation of a manufacturing process of a
• FIG. 9 is a schematic flow diagram of an embodiment of a
• a security document 1 is shown schematically in perspective.
• This comprises a document body 2, which is made of a plurality of superimposed and interconnected originally self-supporting layers, in particular based on plastic. From a front side 1 1 to a rear side 12 of the document body 2, this is made of a transparent layer 3, one for a
• Laser marking provided transparent layer 4, a flat extended opaque layer 5 and a further transparent layer 6 formed.
• security documents may be made from a different number of originally self-supporting layers.
• the layers are similar to 3 to 6 in terms of their areal extent.
• the other embodiments may be different in terms of expansion.
• the layers are all based on the same plastic material, for example all made of a polycarbonate material.
• a monolithic document body 2 can be manufactured, at which no phase transition boundaries between the material layers, which are originally made of different self-supporting layers of the same material, are recognizable. For example, become two identical transparent layers laminated on one another, the original material layer thicknesses can no longer be determined in the finished document body.
• photosensitizers for improved are in the individual material layers originally, for example, photosensitizers for improved
• a contemplation-side-dependent security feature 14 is formed.
• the CLI security feature 13 comprises a lens structure 15 which is embossed into the transparent layer 3 facing the front side 11.
• the lens structure may consist of parallel cylindrical lenses. These can all be designed identically or differently with regard to their optical properties.
• the CLI security feature 13 comprises an optically detectable information 20, which is formed, for example, via a laser marking in the transparent layer 4 specially prepared for this purpose.
• the optically detectable information 20 comprises a first information component 21, which is indicated by dots, and a second information component 22, which is indicated by crosses.
• the information portions 21, 22 are arranged alternately nested.
• the first piece of information 21 stores a letter "A”
• the second piece of information 22 stores, for example, the letter "B".
• the two pieces of information can easily by taking advantage of the lens structure 15 in the
• Document body 2 are introduced by means of laser radiation, which consists of a
• Information shares 21, 22 is irradiated.
• the incident laser radiation is focused in the document depending on the direction of irradiation at different positions, so that the partial information 21, 22 are stored nested depending on the direction of irradiation at different positions.
• the CLI security feature 13 can be directly verified upon viewing the front side 1 1. This means that a consideration of the
• Security document 1 on the front 1 1 represents a direct view.
• Viewing angle is dependent.
• Fig. 2a and 2b the direct considerations on the direct viewing directions A 25 and B 26 are shown accordingly. If a distance of the cylindrical lenses is selected to be correspondingly low, the fact that the information components originally consist of strips is not perceived by a human observer.
• a plurality of apertures 30 is formed, which together form a see-through window 31.
• This see-through window 31 is arranged in the document body 2 relative to the CLI security feature 13 so that it is possible via the back 12 to detect through the see-through window 31 the stored information 20 of the CLI security feature 13.
• the considerations about the back side 12 passing through the see-through window 31, i. pass through the apertures 30 in the opaque layer 5 are referred to as Naturalblickbetrachtept along the review viewing directions C 35, D 36.
• a static information of the CLI security feature 13 is detected, which shows a superposition of the two letters "A” and "B” in diffuse lighting.
• the document is viewed in transmitted light and illuminated with directional radiation from the direction from which the letter "A” was originally stored, ie illuminated from the direction from which the letter "A” when viewed directly through the front side 1 1
• Lens structures 15 would be visible an inverse "A” is perceived as shown in Fig. 2d
• an inverse " Fig. 2e is shown in Fig. 2c
• Security document 2 for viewing directions C 35, D 36 shown on the back 12 of the security document 1 in diffused lighting.
• FIG. 3 shows a further embodiment of a security document 1.
• the document body 2 has a reflection volume hologram 51 as contemplation-side-dependent security feature 14.
• the document body 2 has a reflection volume hologram 51 as contemplation-side-dependent security feature 14.
• complementary information 54 is detected in which the spectral component which has contributed to the reconstruction of the hologram is removed from the light.
• complementary information 54 is detected in which the spectral component which has contributed to the reconstruction of the hologram is removed from the light.
• Volume reflection hologram 51 reconstructed, for example, in the review and in the direct consideration, the complementary information is perceptible.
• FIG. 4 another security document 1 is shown schematically in a sectional view.
• the stored information 20 is not introduced via a laser blackening of plastic, but by printing, for example, the underside of the transparent layer 3, in which the lens structure is embossed, in front of a
• CLI and MLI although actually created for laser-marked security features, are nowadays also used for viewing-angle-dependent security features that incorporate Lens structure and spaced therefrom stored optical information, which is not generated by a laser.
• Fig. 5 is a sectional view of a security document analogous to the
• Laser marking is stored in the specially prepared laser marking substrate layer 4.
• the opaque layer 5 with the openings 30 formed therein is arranged between the lens structure 15 and the stored optically perceptible information 20.
• viewing through the back side 12, in which the perceived information is viewed through the see-through window 31, is considered to be a review. This shows a viewing angle dependent effect.
• viewing through the front side 1 1, which is the direct view only the stored information 20 is perceived as static information.
• FIG. 7 Shown in Figure 7 is another embodiment in which the lens structure 15 of the CLI security feature 13 is not attached to the uppermost substrate layer, i. at the
• Front side of the security document 2 is formed.
• the "free spaces" 61 created during the formation of the lenses of the lens relief in the substrate layer 4 are filled with a plastic material 62 whose refractive index deviates from that of the substrate layer 4 into which the lens relief is embossed.
• This substrate layer 4 is superimposed on another transparent layer 3, so that the
• Front 1 1 of the document 1 is smooth and even.
• the substrate layer 4, into which the lens structure 15 is originally embossed is more highly refractive than the remaining substrate layers 3, 6 and than the plastic material 62 used to fill in the free spaces 61 created during embossing.
• Embodiments are possible in which the refractive indices are chosen to be opposite. Decisive for a lens effect is merely that the layer 4, in which the structures are embossed, and the plastic material 62, which fills the free spaces 61, have a different refractive index. With regard to the the embodiment of FIG. 7 is similar to those of FIGS. 1, 4 and 5.
• FIG. 8 schematically shows the production of a security document.
• Substrate layers 3-6 corresponding to the substrate layers 3-6 of the embodiment of FIG. 1 are provided on different rollers 101-104. At this
• Embodiment for example, prepared for a laser marking
• Substrate layer 4 printed in those areas where the CLI security feature is not to be formed later.
• the remaining substrate layers can also be printed.
• one or more pressure devices 121 may be provided.
• the apertures 30 are formed in the form of microperforations in a perforation device 131, for example via the irradiation of laser light, in the opaque, extensively extended substrate layer 5.
• Laminating device 141 the various substrate layers 3-6 are joined together to form a monolithic layer composite 152.
• a lens embossing device 151 are via a sonotrode on the front side 1 1 of the layer composite
• a laser marking device 161 different information 20 about the microlenses of the lens structure 15 are stored in the document body from different directions.
• a separating device 171 separates the security documents 1 thus produced, which in the case of the production process described by way of example are identical to those of FIG.
• the openings are not filled.
• FIG. 9 is a schematic diagram of a flowchart of a verification method.
• a security document is provided 201.
• Security element which shows different optical effects depending on the viewing side, is first of all detected in a direct view 202. Subsequently, a review is provided by the image formed in the opaque layer
• Information from a database 207 can be included, the detected visual effects of the review and the direct viewing are compared and evaluated and derived therefrom a verification decision 205 and issued 206.

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• Business, Economics & Management (AREA)
• Accounting & Taxation (AREA)
• Finance (AREA)
• Credit Cards Or The Like (AREA)

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• 2012
  • 2012-03-19 DE DE201210204340 patent/DE102012204340A1/de not_active Withdrawn
• 2013
  • 2013-03-18 WO PCT/EP2013/055586 patent/WO2013139747A1/de active Application Filing
  • 2013-03-18 CN CN201380015181.9A patent/CN104203589B/zh active Active
  • 2013-03-18 EP EP13709480.1A patent/EP2828093B1/de active Active

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