EP3360692A1 - Method for producing a security feature in a data carrier and a data carrier comprising such a security feature - Google Patents

Abstract

The invention relates to a method for producing a security feature (2) in a data carrier (1), comprising the following steps: providing a data page (7) with a layer of a first plastic material (13); Providing a connecting element (8), wherein the connecting element (8) comprises a fabric (10) made of a second plastic material (19); Positioning the connecting element (8) in a printing position; Receiving image data; Controlling a printhead for selectively printing the fabric (10) with at least one ink preparation (16) in response to the received image data; Connecting the printed connection element (8) and the data side (7), whereby the first plastic material (13) of the data side (7) completely penetrates the meshes of the fabric (10) at least in sections and in that case the fibers (12) of the fabric (10 ) at least partially encloses completely, so that the at least one printed ink formulation (16) migrates during the bonding at least partially from the fabric (10) into the adjacent to the fibers (12) first plastic material (13) of the data page (7). Furthermore, the invention relates to such a data carrier.

Description

The invention relates to a method for producing a security feature in a data carrier and a data carrier with such a security feature.

In the field of passport books, it is common that important personal data of the holder of the passport on a data page from a composite body, such as plastic-based, are, which is inserted in the passport book. The advantage of a composite plastic material is better protection, as a greater variety of security features is available and a data page is more difficult to falsify. In order for the data page to be turned over like a normal paper page, a hinge or a tab is needed that connects the data page with the passport book. For this purpose, there are various solutions that are based, for example, on providing a data page on the inside of the passbook with a connecting element, for example in the form of a textile or flexible strip, so that a data carrier formed from the data page and the connecting element are sewn into the passport can.

• Aus DE 10 2012 019 308 A1 geht ein Inlay für eine Datenseite für ein Passbuch hervor. Das Inlay weist eine Gewebeschicht auf, die innig mit einer Schicht aus einem Kunststoffmaterial verbunden ist, welche die Maschen des Gewebes ausfüllt, sodass das Inlay eine geschlossene profilierte Oberfläche aufweist. Diese Oberfläche ist zum einen von der erhabenen Gewebestruktur der Gewebeschicht und zum anderen von dazwischen liegenden Zwischenflächen aus Kunststoffmaterial gebildet. Die Flächenabmessungen des Inlays entsprechen den für eine Datenseite vorgegebenen Außenabmessungen zuzüglich eines Verbindungsbereiches, mit dem die Datenseite in dem Passbuch befestigt werden kann und der hierzu über die Datenseite vorsteht. In einer Ausführungsform kann das Inlay auch einen Streifen in der Datenseite bilden, der an einem Rand der Datenseite übersteht.

Various solutions are known from the prior art for this purpose:

• Out DE 10 2012 019 308 A1 An inlay for a data page for a passport is shown. The inlay has a fabric layer intimately bonded to a layer of plastic material that fills the meshes of the fabric so that the inlay has a closed profiled surface. This surface is formed on the one hand by the raised tissue structure of the tissue layer and on the other by intermediate intermediate surfaces of plastic material. The surface dimensions of the inlay correspond to the outer dimensions specified for a data page plus a connection area with which the data page can be fixed in the passport book and protrudes over the data page for this purpose. In one embodiment, the inlay may also form a stripe in the data page that survives at an edge of the data page.

In DE 10 2010 053 640 A1 a multilayer data carrier is proposed which has at least one integrally coextruded strip film and at least one further film associated therewith. The coextruded strip film has a strip of soft material and a strip of stiff material. The further foil is formed by a stack of layers which covers only a part of the strip foil and leaves a border zone uncovered over the strip of soft material. The layer stack area forms the data area of a data page. A connection area formed by the uncovered soft material serves to sew the data carrier into a passport book.

Furthermore, it turns out DE 10 2012 213 913 A1 a passbook card which has a connection tab for connecting a book or stapling page with a passport document. The connecting strap is formed of a textile material. For this purpose, the connecting tab and the booklet or book page are arranged overlapping and both welded together in an overlap region formed thereby, in particular by means of ultrasound. It is stated that a printed image in the form of alphanumeric characters in the booklet or book page becomes visible due to the welding through the connecting tab.

From the WO 2016/177681 A1 Further, a data carrier, suitable for insertion into a book or book-shaped object, and a method for producing such a data carrier are known, wherein the data carrier comprises a data page and a connecting element and the data page and the connecting element are connected to each other in an overlap region. In the overlapping area, a security feature is formed by laser processing, wherein the information components of the security feature are partially formed in the data page and partially in the connecting element.

A key objective of all ID documents is the protection against counterfeiting. To this end, the highest possible barriers to counterfeiting and falsification of the documents are set up. In the many types of falsification and falsification of passbooks, the complete exchange of data pages of a data carrier in the passbooks is a commonly used forgery method. For this purpose, the data page is separated from the connector and replaced by another, possibly manipulated, data page. Therefore, there is one of the present The invention underlying problem is that conventional data carriers of passbooks are not sufficiently secure against the exchange of the data page. Furthermore, it is difficult to detect or prove manipulation.

It is thus desirable to provide a data carrier for insertion into a book or book-shaped article, in particular a passport book, and a corresponding method for producing such a data carrier, in which the security against counterfeiting is increased.

The invention is therefore based on the problem to provide a method for producing a security feature in a data carrier and a data carrier with such a security feature, which ensure increased security against counterfeiting of the data page.

The technical problem is solved by a method with the features of claim 1 and a data carrier with the features of claim 12. Advantageous embodiments of the invention are the subject of the dependent claims.

The invention is based on the idea to provide a data carrier comprising a data page made of a first plastic material and a connecting element which includes a fabric made of a second plastic material. It is intended to print the tissue before it is connected to the data page by means of at least one ink preparation. In this case, the fabric of the connecting element can be printed over the entire surface or only in sections. The bonding of the printed connection element and the data side is then carried out in such a way that the first plastic material of the data side completely penetrates the meshes of the fabric during bonding at least partially, thereby completely enclosing the fibers of the fabric at least in sections, so that the at least one printed ink preparation during bonding at least partially migrated from the fabric into the first plastic material of the data side adjacent to the fibers. The advantage of the invention is that the at least one printed ink preparation is also present in the first plastic material after the data page has been connected to the connecting element according to the invention. The data page and the connector thus become integral between the connector and the data page trained security feature linked together. This increases the security against counterfeiting, since, for example, exchanging the data page, in which the data page is separated from the tissue of the connecting element and subsequently a different data page is inserted, can thereby be detected and thus made considerably more difficult. Thus, for the exchanged data page, it is almost impossible to produce an exact match of the printing which extends beyond the interface between the fibers of the fabric of the connector and the data page. The match would not only have to be produced on one surface of the data carrier, but also in the volume below the surface.

In particular, the invention has the advantage that the at least partially completely enclosing the fibers of the fabric by the first plastic material of the data side facilitates introduction of the at least one ink preparation into the first plastic material of the data side during the joining. In this case, it is particularly advantageous that in this way a security feature is integrated into the data carrier and this security feature can be checked for its authenticity by means of a corresponding method for verifying.

definitions

A data carrier is to designate a data page and a connection element which are connected to one another. The data carrier thus forms a physically trained carrier of information, in particular of personalized data for identification purposes, in particular for passports or other book or stapled objects. The data carrier can in this case comprise both optically detectable by humans characteristics, in particular security features, as well as machine-readable features, in particular security features.

The book or book-shaped object with the data carrier inserted therein according to the invention is in particular a passport book. Alternatively, it can also be another security document into which a data carrier is inserted. This article preferably has on the outer sides a booklet or cover made of two parts, a front part and a back part, which are connected to each other via a book or a spine. Furthermore, the article may be in addition to the data carrier as well Heft- or book pages, which are typically made of paper and are used to hold subsequently inserted information, in the case of a passport (passport) of registered visas, etc.

In the context of the present invention, a data page means a flat, preferably rectangular carrier, for example for information to be displayed about an object or a living being, such as a person or a thing. In this case, the information can be in plain text or in coded form. Furthermore, the information can be present in an eye-recognizable form, only in an optical aid-recognizable form or in electronically stored form. A storage in electronic form can take place, for example, in an electronic semiconductor chip, which can be communicated via an external electrical contact and / or contactlessly by means of an antenna (RFID) connected to it.

The data page is inserted via the connecting element in the book or book-shaped object, for example by sewing. The data page together with the connection element forms a data medium. The data page comprises individualizing data of the person or thing associated with the security document, in plain text or in encrypted form, or in any other suitable manner that is difficult to counterfeit or imitate. For example, special luminescent colors can be used to reproduce data, the data being present in alphanumeric representation, for example. The data page may further include common security features, such as electromagnetic radiation diffractive elements, such as volume or surface holograms, tilts, special print patterns, such as guilloches (especially in pastel colors), and optically variable colors, surface embossments, and the like. Further, the data page may also include electronic components such as electronic displays, sensors such as touch sensors, and the like.

Fabric is a textile fabric made from at least two thread or fiber systems crossed at right angles or at right angles. In a fabric made of a plastic material, the threads or fibers are made of a plastic material. In the following it is assumed that the tissue consists of at least two crossed fiber systems. The term fiber in this specification is also intended to include threads formed from fibers to form the fabric from thread systems. The term "fully enclosed fiber" thus also includes the term "fully enclosed thread" when the fabric is formed from thread systems.

A marginal sharpness should indicate an edge sharpness of a print. The more abrupt a transition between a printed area and an unprinted area, the higher the edge sharpness. For example, edge definition may be defined in terms of a measure of length, such as a length at which a transition occurs between a fully printed (full saturation or full colorant density) to a completely unprinted area. In this case, it may be provided in particular that an information content of the printing, for example alphanumeric characters, is taken into account. For example, for a given letter at one or more contour edges, it can be determined over which length a complete print (maximum saturation or pigment density) changes to a completely unprinted area. The blurrier the contour edges, that is, the more the contour edge is washed out, the smaller the edge definition.

It may further be provided that the edge definition is defined with respect to an optical image captured by a printing, for example in relation to a number of pixels in which a transition occurs between a completely printed area and a completely unprinted area at a contour edge. Here, the detected optical image should map a predetermined and firmly defined area, so that a certain number of pixels correspond to a predetermined length on the data carrier. In particular, methods for color channel separation and filters can be applied to the detected optical image.

A marginal sharpness can also be determined via a concentration of printed colorants of the at least one ink formulation. In this case, a concentration is determined at one or more contour edges of a print and an edge sharpness is determined from a drop from a maximum concentration to a concentration of zero. The faster the concentration drops, the greater the edge sharpness.

In addition, a marginal sharpness can also be determined by stamping out a contour of a print and a length change of the contour resulting therefrom. Looks an ideal printing (with maximum edge sharpness) for example one sharp contour before, for example, a straight line from an imaginary point A to an imaginary point B on an edge of the print, and lubricates such a contour edge when connecting the connecting element with the data page then from the straight line of the original contour is a serpentine contour, since individual points on the original straight line of the contour have moved away from their original positions. The contour now has a greater length than the original contour in the form of the straight line. It can now be provided that, analogously to the points A and B mentioned by way of example, points are defined between which an ideal contour of the printing or a contour prior to the joining step is known. Between these points, a length of the contour present after joining is determined and compared with the length of the ideal or previous contour. The more the given length deviates from the length of the ideal or previous contour, the lower the edge definition.

In particular, a marginal sharpness can also be defined as mean edge sharpness, for which purpose a respective edge sharpness is determined at a plurality of contour edges or transitions between completely printed and completely unprinted areas of a print and the determined edge sharpnesses are then averaged to a mean edge sharpness. In a detected optical image, it may furthermore be provided that averaging over a plurality of pixels or pixel regions of the optical image is determined in order to determine edge sharpness.

Two objects whose surface when illuminated with white light show different remission spectra, so that a person who has no restrictions on color vision perceives them as differently colored, cause different color color impressions.

Special embodiments

In particular, there is provided a method for producing a security feature in a data medium, which is suitable for insertion into a book or book-shaped article, comprising the following steps: providing a data page, wherein the data page comprises at least one layer for connection of a first Plastic material on an outer side comprises; Providing a connecting element, wherein the connecting element is a fabric of a second plastic material comprises; Positioning the connector in a print position; targeted printing of the fabric with at least one ink preparation; Connecting the printed connection element and the data side, wherein the first plastic material of the data side completely penetrates the meshes of the fabric during bonding at least partially, thereby completely enclosing the fibers of the fabric at least partially, so that the at least one printed ink formulation during bonding at least partially from the tissue migrated into the adjacent to the fibers first plastic material on the data side.

Preferably, the plastic materials and a mean mesh between fibers of the fabric are selected such that the first plastic material of the data side can completely penetrate the stitches upon bonding the data side to the fastener and completely enclose the fibers of the fabric.

The printing of the fabric can be done with different printing methods. In particular, a high, low, low, or high pressure, a pad printing process or other printing processes known in the art can be used.

In order to print information on the tissue, which individualize a later data carrier compared to other data carriers of a majority of data carriers or which personalize the data carrier for a later owner, digital printing methods, in particular an inkjet printing method, are preferably used.

The individualizing information is received, preferably in the form of image data. This information or image data then controls, for example, one or more printheads relative to the tissue to print on.

The printing can be done monochromatically, also with black or white ink, or even multicolored. The printed image itself can be part of the decoration of the data carrier and / or serve as security printing. The print can thus include alphanumeric characters, symbols but also pictograms, images or other graphic elements.

Preferably, the fabric of the connecting element is printed both in an overlapping area in which the connecting element overlaps with the data side, and in a connecting area in which the connecting element is not overlapped with the data side and which is provided for connecting to a book or book-shaped object ,

Furthermore, a data carrier with a security feature is provided, wherein the data carrier is suitable for insertion into a booklet or book-shaped object, comprising a data page with at least one, preferably a surface of the data carrier forming layer of a first plastic material and a connecting element, wherein the connecting element comprises a fabric made of a second plastic material, and wherein the connecting element forms a composite with the data side in which meshes of the fabric are at least partially completely penetrated by the first plastic material of the data side in an overlapping region and fibers of the fabric are at least partially completely penetrated by the first plastic material of the fabric Data side are enclosed, wherein fibers of the fabric in the overlap region are at least partially provided with a printing, and wherein as a security feature at least in the overlap region at least one ink n preparing the printing both at least partially on and / or in the fibers of the fabric is present as well as at least partially migrated into the fibers surrounding the first plastic material. Thus, a portion of the printing of the fibers is present in the first plastic material which has migrated into the first plastic material in the process of bonding the first plastic material to the fabric.

Preferably, the overlapping area is selected such that the connecting element and the data page do not completely overlap. In this way, a connecting portion of the connecting element can be used to be connected to a book or book-shaped object, for example, to be sewn into this.

Furthermore, a method for verifying a security feature of a data carrier is provided, comprising the following steps: positioning the data carrier in a verification position, acquiring an optical image of at least one Overlapping area of a data page and a connecting element of the data carrier, evaluating the detected optical image of the overlapping area, wherein for evaluating a marginal sharpness of an imprint of the overlapping area is determined in the optical image, and outputting a Verifizierungsentscheidung, wherein the security feature is found to be true, if a predetermined edge sharpness is fallen short of.

The format of the data page depends on the book or book-shaped object in which the data page is to be inserted. For example, it may have one of the formats ID 1, ID 2 or ID 3 according to ISO / IEC 7810 in the November 2003 version. In general, the data page is a plastic body which is formed, for example, by a laminate of a plurality of laminate layers, which are bonded to one another in a dimensionally accurate manner under the influence of heat and under increased pressure. For example, the laminate layers are made of a material suitable for lamination. The data page may be formed from a polymer selected from a group comprising polycarbonate (PC), especially bisphenol A polycarbonate or a polycarbonate formed with a geminally disubstituted bis (hydroxyphenyl) cycloalkane, polyethylene terephthalate (PET), their derivatives , such as glycol-modified PET (PETG), polyethylene naphthalate (PEN), polyvinyl chloride (PVC), polyvinyl butyral (PVB), polymethylmethacrylate (PMMA), polyimide (PI), polyvinyl alcohol (PVA), polystyrene (PS), polyvinylphenol (PVP), polypropylene ( PP), polyethylene (PE), thermoplastic elastomers (TPE), in particular thermoplastic polyurethane (TPU), acrylonitrile-butadiene-styrene copolymer (ABS) and their derivatives, polyamide (PA) and / or paper (cellulose) and / or cardboard and / or a glass and / or metal and / or a ceramic. In addition, the data page may also be made of a plurality of these materials, in particular if it is formed from several layers and the individual layers are formed from different materials. Preferably, it consists of PC or PC / TPU / PC. The polymers may be either filled or unfilled. In the latter case they are preferably transparent or translucent. If the polymers are filled, they are opaque. The filler may therefore be, for example, a pigment. The layers can be colored or colorless. The outer layers of the data page can be particularly colorless transparent and have a high abrasion resistance. The above information relates both to films to be joined together and to liquid formulations applied to a precursor, such as a protective or topcoat. A laminate formed in this way may conclude on or coated on both sides with the protective or topcoat or with a film. In particular, the film may be a scratch-resistant film. Overlay layers formed in this way protect a security feature arranged underneath and / or give the document the required abrasion resistance. In principle, the data page can also be produced by (co) extrusion. The thickness of the data card is preferably 250 to 950 microns, especially 760 ± 80 microns.

The connecting element is preferably an elongated, in particular rectangular, sheet, and has two areas: an overlapping area in which the connecting element overlaps with the data side, so that a fixed joint connection can be produced, and a connecting area in which the connecting element does not intermesh Data page overlaps and in which the connecting element can be connected to the book or book-shaped object. Preferably, the connecting element is as long in an extension direction as the data side, so that the connecting element extends over an entire edge length of the data page and not beyond. In the volume, the connector overlaps the data page in the overlap area such that the connector's connector area projects laterally beyond the data page. This connection area is used for subsequent connection of the data carrier with the body of the book or book-shaped object.

The printing is preferably carried out by means of a printing device which operates digitally. In this case, a print head is guided over the tissue or the tissue is guided past a stationary print head. A controller then controls the targeted application of the at least one ink preparation as a function of the image data. In such a printing device, it is possible in particular to make the information which is to be printed arbitrarily. Thus, a printing can be implemented with individualized image data for each connecting element to be printed.

The intended for connecting layer of the data page from the first plastic material is preferably selected to be transparent, so that a print after connecting the data page with the connecting element in the volume of the first plastic material is still easy to recognize.

As a rule, the at least one ink formulation has a solvent which permits printing of the ink preparation in liquid form. After printing, the solvent evaporates, so that the colorant contained in the ink formulation, such as pigments or dissolved dyes, are fixed on the connecting element and a shape of the printed image can not be easily changed. In one embodiment, it is therefore provided that the printed fabric is brought to a heating temperature during and / or after printing. This serves to accelerate evaporation of the solvent, so that the printed ink preparation is fixed faster. For example, a warming to between 20 degrees Celsius and 100 degrees Celsius, preferably to between 40 degrees Celsius and 80 degrees Celsius. The heating is preferably for a duration between 10 seconds and 300 seconds, more preferably for a duration between 30 seconds and 150 seconds.

The solvent or solvents in the at least one ink formulation have the effect, on the second plastic material of the fabric of the connector, that a surface of the fibers of the fabric is dissolved and the colorants of the ink composition penetrate into the volume of the fibers. A penetration depth of the colorant into the volume depends, inter alia, on the time in which the solvent or solvents have not yet completely evaporated. In a further embodiment, it is therefore provided that the heating temperature and / or a heating time are determined as a function of a predetermined penetration depth of the ink preparation into the fibers of the fabric. The advantage is that a penetration depth can be set specifically via a correspondingly selected heating temperature and / or a correspondingly selected heating time. Lower drying temperatures promote penetration of the ink formulation into the fiber and, however, increase the drying time.

Also, the migration of the at least one printed ink formulation into the first plastic material of the data page can be controlled. In particular, a penetration depth depends on a duration of the process step for connecting the data side to the connection element. In a further embodiment, it is therefore provided that a process duration and / or a process parameter for the connection in dependence on a predetermined penetration depth of the at least one Ink preparation are set in the first plastic material of the data side with respect to a common interface with the fibers of the tissue. As a process parameter, for example, a temperature or an introduced power during the joining into consideration.

With the method, penetration depths or migration depths of the at least one ink formulation into the first plastic material can be achieved, which are in the range of more than 10 micrometers, preferably even more than 50 micrometers to 150 micrometers or even more than 100 micrometers.

In order to facilitate bonding of the data side to the fabric of the fastener and introduction of the at least one ink formulation during bonding in the first plastic material, the first plastic material should be able to freely penetrate the mesh between the fibers of the fabric. In one embodiment, it is therefore provided that the mean mesh between fibers of the fabric is greater than an average width of the fibers of the fabric.

In this case, a mesh size is intended to denote the shortest distance between two fibers which bound the mesh and are not immediately adjacent, for example parallel, fibers. The mean mesh size is then a mesh width averaged over the entire area of the fabric.

A width of the fiber shall denote the maximum dimension of the diameter of a fiber in the plane of the fabric. The average width is then a width averaged over all the fibers of the fabric.

In particular, in one embodiment, the mean mesh between fibers of the fabric is in the range between 1.5 times the median width and 4 times the median width of the fibers of the fabric. This makes it possible for the first plastic material to pass through the meshes of the fabric particularly well when joining and to completely enclose the individual fibers at least in sections after they have passed through.

Preferred mesh sizes are between 10 microns and 500 microns. Meshes between 50 micrometers and 300 micrometers are particularly preferred.

It is particularly difficult to forge a multi-colored printing, since not only the colored print itself must be replicated in the forgery, but also all interfaces between the fabric and the data page after an exchange of the data page in their color appearance must be replicated exactly. In a further embodiment, it is therefore provided that the fabric is printed by means of at least one further ink preparation, wherein the at least one ink preparation and the at least one further ink formulation cause different color impressions in the printed state.

In a further embodiment it is provided that the joining is carried out by means of ultrasonic welding. In particular, it can be provided in this case that a sonotrode used in ultrasonic welding has a structured embossing stamp, by means of which a symbol, a sign or a lettering, etc. is embossed into a surface of the overlapping area of the data carrier as a further security feature.

It has been found that a combination of materials of polycarbonate as a first plastic material and polyethylene terephthalate as a second plastic material is particularly well suited to form a composite according to the invention, since the heating temperatures of the two materials are such that the polycarbonate penetrate the mesh of polyethylene terephthalate particularly well and The fibers can then enclose particularly well. In a further embodiment it is therefore provided that the first plastic material comprises polycarbonate and the second plastic material comprises polyethylene terephthalate.

Further, it has been found that polycarbonate based ink formulations are particularly well suited to migrate to polycarbonate. In a preferred embodiment, it is therefore provided that the at least one ink formulation comprises a binder with a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenylcycloalkane. A process for producing such ink preparations is known, for example, from DE 10 2007 052 947 A1 known. Further For example, such an ink formulation is known in the market under the brand name POLYCORE®-Ink. In particular with these ink formulations, very large migration or penetration depths of the ink formulation into the first plastic material of the data side can be achieved when the printed fabric is connected to the data page. These migration or penetration depths are more than 10 microns, preferably more than 50 microns and most preferably more than 100 microns.

It can be provided that the printing comprises information individualizing the data carrier. Individually considered is information that is unique to a person or an object or a group of persons or objects from a larger total of persons or objects. An information individualizing a group of persons within the totality of the inhabitants of a country is, for example, the city of the place of residence. An individualizing information for a person is, for example, the number of the passport.

In a preferred embodiment, it is further provided that the printing has at least one further ink preparation, wherein the at least one ink preparation and the at least one further ink preparation of the printing cause different color impressions. In this way, multicolored information can be applied to the fabric of the connecting element and in this way also in the data page. In particular, it may be provided, for example, to print multi-colored lettering and / or symbols. It is also possible to print multicolor images, such as photographic images. The further ink preparation is preferably also according to the in DE 10 2007 052 947 A1 formed method described.

In particular, it may be provided that, as in four-color printing, four ink formulations are used, for example ink formulations which cause the color impressions cyan, magenta, yellow and black, so that a CMYK color space can be made available. Furthermore, it may also be provided in addition to provide ink formulations with special colors or functional colors.

In the context of the method for verifying the security feature in the data carrier, a marginal sharpness of the printing in the overlapping area is determined. A forgery, for example by removing and then exchanging the data page, can be detected via a deviating edge definition and / or further criteria. Another criterion is, for example, that the existing in the overlapping area of the disk printing on a given color value must match. Since the connecting element is printed prior to being connected to the data side, another criterion may also be that a seamless and precise transition of printing over a borderline between the overlapping region and the connecting region of the connecting element must be present. A falsification would then show up by the fact that there are color jumps and / or jumps in the contours of the printing at this boundary line.

In case of a forgery by an exchange of the data side, the connecting element would have to be separated largely intact from the real data side. Subsequently, the connection element would have to be reprinted, since a large part of the ink preparation will remain in the separated data page. This reprinting would have to be done in register with the existing printing on the connecting element. The color values or a color impression of the ink preparation (s) should also be identical. In addition, in a forgery, which is based on an exchange of the data page at the same constant connection element, still residues of the previous printing on the fibers of the fabric of the connecting element to be found, which remain visible even after further printing.

A forgery can then be determined, for example, by checking whether a print, for example a print which is scattered in the overlap area and is not associated with a residual print, is consistent in its appearance with the remaining print. For example, because printing is done only by rich colors, a fake can be detected by leaving color spaces that are not fully saturated.

In a further embodiment of the method for verifying the security feature of the data carrier, it is provided that, furthermore, an area of the connecting element adjoining the overlapping area is arranged in an optical area Image is detected, and a further edge sharpness of a print in this adjacent area in the optical image is determined, and the security feature is found to be true, if the edge sharpness falls below the further edge sharpness. In this case, it can also be provided that the overlapping area and the adjacent area are detected in a single optical image, if such a simultaneous detection is possible. In particular, in a forensic examination of a passport, in which, if necessary, the stapling or binding of the passport document is resolved, such an investigation can be made. In this way it can be stated that a printing has taken place before a connection. A falsification of the data carrier, in which, for example, only after an exchange of the data page is a printing in the overlapping area, this would be recognizable.

In a further embodiment of the method for verifying the security feature of the data carrier is further provided that the security feature is found to be true, if the at least one ink formulation in the fiber-surrounding first plastic material in addition a predetermined penetration depth with respect to a common interface with the fibers of the tissue. This can be determined, for example, by making a cut through the overlap area and corresponding microscopic magnification of the exposed cross-section of the overlap area of the data carrier. In this case, for example, a mean penetration depth of the at least one ink preparation can be determined in a random sample and compared with the predetermined penetration depth. For a counterfeit, the same predefined penetration depth would have to be achieved. On the other hand, if the specific penetration depth deviates from the given penetration depth, the forgery would show up.

Furthermore, in a further embodiment it can be provided that it is additionally checked whether the at least one ink formulation is present at least partially on and / or in the fibers of the fabric, the security feature being considered genuine, if this is additionally the case. Again, the penetration depth can be determined in a cross section of the overlap region, for example by an average penetration depth is determined and compared with the predetermined penetration depth. If at least one other ink formulation is used in the printing, it is provided during the verification that it is additionally checked whether at least one further ink formulation is present in the first plastic material, the security feature being found to be true, if this is additionally the case.

Fig. 1a

eine schematische Darstellung einer Vorderseite einer Ausführungsform des Datenträgers mit einem Sicherheitsmerkmal;

Fig. 1b

eine schematische Darstellung einer Rückseite der in Fig. 1a gezeigten Ausführungsform des Datenträgers;

Fig. 2a

eine schematische Darstellung einer 20-fachen Vergrößerung eines Ausschnitts der Vorderseite der in der Fig. 1a gezeigten Ausführungsform des Datenträgers;

Fig. 2b

eine schematische Darstellung einer 20-fachen Vergrößerung eines Ausschnitts der in der Fig. 1b gezeigten Rückseite des Datenträgers;

Fig. 3a

eine schematische Darstellung einer 200-fachen Vergrößerung eines Ausschnitts der Vorderseite der in der Fig. 1a gezeigten Ausführungsform des Datenträgers;

Fig. 3b

eine schematische Darstellung einer 200-fachen Vergrößerung eines Ausschnitts der in der Fig. 1b gezeigten Rückseite des Datenträgers;

Fig. 4

eine schematische dreidimensionale Darstellung einer 200-fachen Vergrößerung des in der Fig. 3b gezeigten Ausschnitts der Vorderseite des Datenträgers;

Fig. 5a

einen schematischen Schnitt durch den in der Fig. 2b gezeigten Überlappungsbereich des Datenträgers;

Fig. 5b

einen vergrößerten Ausschnitt aus dem in der Fig. 5a gezeigten schematischen Schnitt;

Fig. 5c

einen weiteren vergrößerten Ausschnitt aus dem in der Fig. 5a gezeigten schematischen Schnitt;

Fig. 6

ein schematisches Ablaufdiagramm einer Ausführungsform des Verfahrens zum Herstellen eines Sicherheitsmerkmals in einem Datenträger;

Fig. 7

ein schematisches Ablaufdiagramm einer Ausführungsform des Verfahrens zum Verifizieren des Sicherheitsmerkmals des Datenträgers.

The invention will be explained in more detail with reference to preferred embodiments with reference to the figures. Hereby show:

Fig. 1a

a schematic representation of a front side of an embodiment of the data carrier with a security feature;

Fig. 1b

a schematic representation of a back of in Fig. 1a shown embodiment of the data carrier;

Fig. 2a

a schematic representation of a 20-fold magnification of a section of the front of the in Fig. 1a shown embodiment of the data carrier;

Fig. 2b

a schematic representation of a 20-fold magnification of a section of the in Fig. 1b shown back of the disk;

Fig. 3a

a schematic representation of a 200-fold magnification of a section of the front of the in Fig. 1a shown embodiment of the data carrier;

Fig. 3b

a schematic representation of a 200-fold magnification of a section of the in Fig. 1b shown back of the disk;

Fig. 4

a schematic three-dimensional representation of a 200-fold magnification of the in Fig. 3b shown section of the front of the disk;

Fig. 5a

a schematic section through the in the Fig. 2b shown overlapping area of the data carrier;

Fig. 5b

an enlarged section of the in the Fig. 5a shown schematic section;

Fig. 5c

another enlarged section of the in the Fig. 5a shown schematic section;

Fig. 6

a schematic flow diagram of an embodiment of the method for producing a security feature in a data carrier;

Fig. 7

a schematic flow diagram of an embodiment of the method for verifying the security feature of the disk.

The FIGS. 1a and 1b show a schematic representation of an embodiment of the data carrier 1 with a security feature 2. This shows the Fig. 1a a schematic view of a front side 3 of the data carrier 1 and the Fig. 1b a schematic view of a rear side 4 of the data carrier 1. Both the front 3 and the back 4 of the data carrier 1 may have further security features, such as a passport photo 5 or a security thread 6 etc.

The data carrier 1 has a data page 7 and a connecting element 8. The connecting element 8 has the printing 9 according to the invention, which is formed in this embodiment by way of example as a multi-colored letter sequence in which each letter alternately different color impressions are assigned by means of an ink composition used in accordance with the printing.

The FIGS. 2a and 2 B show a 20-fold enlarged section of the front 3 and the back 4 of the in the FIGS. 1a and 1b It can be clearly seen that the connecting element 8 comprises a fabric 10 whose fibers are wetted with the at least one ink preparation of the printing 9. In Fig. 2b In addition, an overlap area 11 can be seen, in which the connecting element 8 is connected to the data page 7. The connection can be made by means of positive locking by the first plastic material of the data page 7 at least partially penetrates through the mesh 10 of the fabric during bonding and then completely encloses the fibers of the fabric 10 at least in sections.

In Fig. 2b It can clearly be seen that an edge sharpness 14, 15 of the letters of the printing 9 in the overlapping area 11 has decreased by connecting the data page 7 to the connecting element 8 (see also FIGS FIGS. 3a and 3b ).

In each case a further enlargement show the FIGS. 3a and 3b , which in turn show the front 3 and the back 4 of the disk, but at different locations. Fig. 3a in this case shows only the front side 3 of the printed fabric 10 of the connecting element 8 in a region in which this is not connected to the data page, that does not overlap them. Fig. 3b on the other hand shows a section of the overlapping area 11 (FIG. Fig. 2b ). In each case a 200-fold magnification was used. Evident is also an embossed structure 40, which represents a structuring of the sonotrode used for connecting.

The first plastic material 13 of the data page 7 is in Fig. 1a, 1b . 2a . 2 B and 3b indicated by the coarse hatching running from lower left to upper right. For reasons of simplicity and clarity, the hatching is in Fig. 2a . 2 B and 3b drawn under the tissue. However, the first plastic material 13 penetrates through the stitches 31 and encloses the fibers 12 at least in sections completely. Preferably, the first plastic material 13 completely encloses the fibers 12 of the fabric 10 in planar sections. Particularly preferably, the first plastic material 13 encloses the fibers 12 of the fabric 10 completely in the entire overlapping region 11 of the connecting element 8 with the data page 7. That is, particularly preferably, the first plastic material 13 completely surrounds the fibers 12 of the fabric 10 in the overlapping region 11.

In the FIGS. 2a and 2 B 3a and 3b show that the first plastic material of the data page 7 has received at least a portion of the at least one ink formulation 16 in the connecting step or at least one ink formulation of the fibers 12 of the fabric 10 in the surrounding or surrounding fibers 12 enclosing first plastic material 13 is migrated. This can be used for verification by means of optical checking and subsequent comparison of the edge sharpness 14 of the printing 9 outside the overlapping area 11 with the further edge sharpness 15 of the printing 9 within the overlapping area 11. If edge margins 14, 15 meet certain specifications, for example in a relative relationship to each other, the security feature is found to be true, otherwise the security feature and thus the disk is judged to be spurious.

In the Fig. 3a Furthermore, it can be seen that a mesh size 30 is chosen to be significantly larger than a width of the fibers 12. When joining, this favors a passage of the first plastic material 13 (FIG. Fig. 3b ) through the stitches 31 of the fabric 10 of the connecting element 8, as well as a further material transport of the first plastic material 13 through the stitches 31, so that the first plastic material 13 passed through the stitches 31 can completely surround the fibers 12 on the other side at least in sections , In this case, in particular, it is also achieved that migration of the at least one ink preparation 16 of the printing on joining into the largest possible volume of the first plastic material 13 is favored. A mesh size is preferably in the range of from 10 microns to 500 microns, preferably in the range of 50 microns to 300 microns. Fiber widths or diameters are preferably in the range of 20 microns to 120 microns, preferably in the range of 50 microns to 100 microns.

In Fig. 4 is a schematic three-dimensional representation of the enlargement of a section similar to that in the Fig. 3b shown section of the transition area on the back of the in Fig. 1b shown embodiment of the data carrier shown. For reasons of simplification, the structure 40 impressed by the structured sonotrode is the Fig. 3b in Fig. 4 Not shown. The individual fibers 12 of the fabric 10 are completely enclosed by the first plastic material 13 on the data side and the at least one ink formulation 16 which has been printed on the fibers 12 of the fabric is largely migrated into the at least one plastic material 13 enclosing the fibers 12. Since edges of the printing with the at least one ink preparation 16 lose their migration to a larger volume of marginal sharpness, marginal sharpness is reduced compared to printed areas outside the overlapping area. By means of the reduced edge sharpness, it can be estimated whether printing took place before the data page was connected to the connecting element, or whether printing was applied only after connecting the data page to the connecting element. This can be used to verify the security feature.

The Figures 5a, 5b and 5c each show sections 17 through in the Fig. 2b shown overlap area 11, which were created on the basis of recordings, which were recorded by means of optical microscopy. This show the FIGS. 5b and 5c in each case more enlarged excerpts from the Fig. 5a ,

In Fig. 5a is the first plastic material 16, for example, transparent polycarbonate seen in section 17. Underneath a further layer 18 can be seen, which forms an inner part of the data page. This further layer 18 consists for example of white polycarbonate (PC). In the area of the first plastic material 13 and above, fibers 12 of the fabric 10 made of the second plastic material 19 that are perpendicular and parallel to the cutting plane are visible. The second plastic material 19 is, for example, polyethylene terephthalate (PET).

In the Fig. 5b It can be seen that the first plastic material 16 has completely penetrated the meshes of the fabric and completely surrounds the fibers 12 after penetration. On the other hand, those are in the Fig. 5c shown fibers 12 are not completely enclosed, but lie after the connection still on an exposed surface of the data carrier.

Furthermore, can be in the FIGS. 5b and 5c recognize that the at least one ink formulation 16 is present both at an interface 33 between the fibers 12 and the first plastic material 13 enclosing the fibers 12 and in the first plastic material 13 itself. This is indicated by way of example in the areas 20, 21 by means of hatching. The migration depth or penetration depth of the ink formulation is thus on the order of the width of the fibers 12 of the fabric or even exceeds them.

Fig. 6 shows a schematic flow diagram of an embodiment of the method for producing a security feature in a disk. In a method step 100, a data page is provided, wherein at least one upper layer of the data page provided for joining comprises a first plastic material. This first plastic material is preferably polycarbonate. The data page may in particular be an already individualized data page of a passport.

In a further method step 101, a connecting element is provided, wherein the connecting element comprises a fabric of a second plastic material, and wherein the plastic materials and a mean mesh between fibers of the fabric are selected such that the first plastic material of the data side when connecting the data side with the connecting element completely penetrate the mesh and completely encase the fibers of the tissue.

In method step 102, the provided connection element is positioned in a printing position. In particular, this is a printing position in a printing device which is suitable for printing at least one ink preparation.

In method step 103, image data is received by a controller of the printing device. These may be, for example, characters, symbols or individualizing information which correspond to other information on and / or in the data page. The image data and, in particular, individualizing information contained therein can be queried, for example, from a database in which corresponding information is stored and can be called up as needed.

In the subsequent method step 104, a printhead of the printing device is printed for selectively printing the fabric with the at least one ink preparation as a function of the received image data.

During printing and / or after that, it can be provided in a method step 105 that the printed fabric of the connecting element is brought to a heating temperature. Over a period of heating, a penetration depth of the at least one printed ink formulation into a volume of the fibers of the fabric of the connecting element can be adjusted. In particular, it may be provided in this case that the heating temperature and / or a heating time are determined as a function of a predetermined penetration depth of the ink preparation into the fibers of the fabric.

When printing, it is preferably provided that at least one further ink preparation is printed with a different color impression than the at least one ink preparation. More preferably, four ink formulations are printed analogously to four-color printing, which together, for example span a full color CMYK color space. Furthermore, other ink formulations may also be provided, for example those which comprise special colors and / or functional colors.

Preferably, the ink formulations comprise a binder with a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenylcycloalkane.

The method steps 102 to 104 can be summarized as a method step for printing on the tissue of the connecting element. In addition to inkjet printing, other digital printing methods are also possible.

For printing on the fabric, it is also possible to use a number of other printing processes, such as letterpress, gravure, flat or gravure printing, a pad printing process or other printing processes known to the person skilled in the art. Importantly, the pressure preparation or ink formulation used to print on the fabric is such that it partially migrates from the fabric to the first plastic material upon bonding the fabric to the data side while the first plastic material at least traverses the mesh of the fabric completely penetrates sections and completely encloses the fibers of the tissue at least in sections.

In addition to or as an alternative to an individual or a personalized to the later owner of the disk pressure may also be provided for all fasteners uniform pressure. Printing on an article, for example the fabric, is individualizing or personalizing if the article is part of a plurality or majority of, preferably similar, articles and the printing of the article differs from the printing of the other articles of majority or majority.

It will be understood by those skilled in the art that the step of providing the data page 100 may be performed after the steps of providing and printing the fabric of the connector 101 to 105 or at the same time.

In the following method step 106, the printed connecting element is connected to the data side, wherein the first plastic material of the data side completely penetrates the meshes of the fabric at least in sections, thereby completely enclosing the fibers of the fabric, so that the at least one printed ink preparation during bonding at least partially of the Migrated tissue into the first plastic material of the data side adjacent to the fibers.

The connection can be carried out in particular by means of ultrasonic welding. For this purpose, the connecting element is applied to the provided for connecting layer on the outside of the data page. The connecting element and the data side are then arranged together between the punch of a sonotrode and welded together by introducing ultrasound. This ultrasonic welding can be done, for example, by injecting ultrasound at a frequency in the range of 25,000 hertz to 90,000 hertz with a sonotrode pressure of 2 newton per square centimeter to 20 newton per square centimeter for a period of 0.5 second to 5.0 seconds.

Other thermal bonding methods, such as a high pressure, high temperature lamination process may also be used for bonding.

In method step 106, it may be provided that a process duration and / or a process parameter for bonding, for example by means of ultrasonic welding, in dependence on a predetermined penetration depth of the at least one ink preparation in the first plastic material of the data side with respect to a common interface with the fibers of the fabric be determined.

In Fig. 7 is a schematic flow diagram of an embodiment of the method for verifying the inventive security feature of the data carrier according to the invention shown.

In a first method step 200, the data carrier to be checked is positioned in a verification position. Such a verification position is, for example, a designated and defined detection area of a camera for this purpose.

In the subsequent method step 201, an optical image of at least the overlapping region of the data page with the connecting element is detected. For this purpose, for example, a correspondingly high-resolution camera with a corresponding optics is used. In a further method step 202, it may additionally be provided that the region of the connection element which lies outside the overlapping region is likewise detected by means of the same or a further optical image. For this purpose, this area of optical detection must be accessible. If, for example, the data carrier is already fastened in a passport via the connecting element, in a method step 203, if necessary, the corresponding page of the passbook, at which the area of the connecting element can be detected outside the overlapping area, must be turned by hand or by machine. In a forensic examination, a staple or bond can also be resolved to allow the verification exam.

In the subsequent method step 204, the detected optical image is evaluated, for example by means of a control provided for this purpose. In particular, it is provided that an edge sharpness of a printing of the overlapping area in the optical image is determined.

In the very last method step 212, a verification decision is issued at the end of the method, the security feature being found to be true if a predetermined marginal sharpness of the printing is undershot.

It may additionally be provided in method step 205 that a further edge sharpness of a print in the region of the connecting element not lying in the overlap region is determined in the further optical image. The security feature is then found to be true in method step 212 if the edge definition falls below the further edge definition.

It can also be provided that for verification alternatively or additionally, the method steps 206 to 211 are performed. In method step 206, a section is created through the overlapping region of the data carrier. In the following method step 207, it is checked in the section of the overlapping area of the data carrier whether at least one ink preparation in which the fibers surround first plastic material is present. The security feature is then found to be true in step 212, if that is the case.

It may additionally be provided that the security feature is found to be true if the at least one ink formulation in the first plastic material surrounding the fibers additionally has a predetermined penetration depth with respect to a common interface with the fibers of the fabric.

Furthermore, in a method step 208 it can additionally be provided that it is additionally checked whether the at least one ink preparation is present at least partially on and / or in the fibers of the fabric, the security feature being determined to be true in method step 212, if this is additionally true Case is.

If several ink preparations have been printed during the production of the data carrier, it may additionally be provided that it is checked in method step 209 whether at least one further ink preparation is present in the first plastic material, the security feature being determined to be true in method step 212 if this is additionally true Case is.

In a preferred embodiment of the data carrier, the first plastic material comprises polycarbonate and the second plastic material polyethylene terephthalate. In a method step 210 it can therefore be provided that it is additionally checked whether the first plastic material is polycarbonate and the second plastic material is polyethylene terephthalate, the security feature being found to be true in method step 212, if this is additionally the case.

In a preferred embodiment of the data carrier, the at least one ink formulation comprises a binder with a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenylcycloalkane. Therefore, it can be provided in a further method step 211 that it is additionally checked whether the at least one ink formulation comprises a binder with a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenylcycloalkane, the security feature being found to be true in method step 212, if this is additionally the case ,

LIST OF REFERENCE NUMBERS

1

disk

2

safety feature

3

front

4

back

5

passport photo

6

security thread

7

data page

8th

connecting member

9

Oppression

10

tissue

11

overlap area

12

fiber

13

first plastic material

14

Feather

15

more edge sharpness

16

ink composition

17

cut

18

layer

19

second plastic material

20

Area

21

Area

30

mesh

31

mesh

32

width

33

interface

40

imprinted structure

100-107

steps

200-212

steps

Claims (15)

A method of making a data carrier (1) having a security feature (2) suitable for insertion into a book or book shaped article, comprising the following steps: (a) providing a data page (7), wherein the data page (7) comprises at least one layer of a first plastic material (13) provided on an outer side for joining, (b) providing a connecting element (8), wherein the connecting element (8) comprises a fabric (10) made of a second plastic material (19), (c) selectively printing the fabric (10) with at least one ink preparation (16), (d) connecting the printed connection element (8) and the data side (7), wherein the first plastic material (13) of the data side (7) completely penetrates the meshes of the fabric (10) during the connection and at least partially penetrates the fibers (12) of the fabric Tissue (10) completely encloses at least in sections, such that the at least one printed ink preparation (16) migrates at least partially from the fabric (10) into the first plastic material (13) of the data side (7) adjacent to the fibers (12) during bonding. A method according to claim 1, characterized in that the printed fabric (10) is heated to a heating temperature during printing and / or after printing. A method according to claim 2, characterized in that the heating temperature and / or a heating time depending on a predetermined penetration depth of the ink preparation (16) in the fibers (12) of the fabric (10) are set. Method according to one of the preceding claims, characterized in that a process duration and / or a process parameter for the connection in dependence of a predetermined penetration depth of the at least one ink preparation (16) in the first plastic material (13) of the data page (7) in Relative to a common interface (33) with the fibers (12) of the fabric (10) are set. Method according to one of the preceding claims, characterized in that an average mesh size (30) between fibers (12) of the fabric (10) is greater than an average width (32) of the fibers (12) of the fabric (10). Method according to the preceding claim, characterized in that the mean mesh size (30) between fibers (12) of the fabric (10) ranges between 1.5 times the average width and 4 times the average width (32) of the Fibers (12) of the fabric (10) is, preferably at least twice as large as the average width (32) of the fibers (12) of the fabric (10). Method according to one of the preceding claims, characterized in that the fabric (10) is printed by means of at least one further ink preparation (16), wherein the at least one ink preparation (16) and the at least one further ink preparation in the printed state cause different color impressions. Method according to one of the preceding claims, characterized in that the joining is carried out by means of ultrasonic welding. Method according to one of the preceding claims, characterized in that a plurality of data carriers (1) is produced, and the targeted printing is carried out such that the pressure applied to the respective fabric (10) is in each case individual for the respective data carrier or personalizing for is the later owner of the respective data carrier. Method according to one of the preceding claims, characterized in that the targeted printing of the fabric (10) is carried out with an ink-jet printing method. Method according to one of the preceding claims, characterized in that the at least one ink preparation (16) comprises a binder with a Polycarbonate derivative based on a geminally disubstituted Dihydroxydiphenylcycloalkans comprises. A data carrier (1) with a security feature (2), suitable for insertion into a book or book-shaped object, comprising: a data page (7) with at least one outer layer of a first plastic material (16) and a connecting element (8), wherein the connecting element (8) comprises a fabric (10) of a second plastic material (19), and wherein the connecting element (8) with the data side (7) forms a composite in which in an overlapping region (11) meshes (31) of the Fabric (10) of the first plastic material (13) of the data page (7) are at least partially completely penetrated and fibers (12) of the fabric (10) at least partially completely surrounded by the first plastic material (13) of the data page (7) Fibers (12) of the fabric (13) in the overlapping region (11) are at least partially provided with a print (9), and wherein at least one ink preparation (16) of the print (9) is provided as security feature (2) at least in the overlap region (11) ) of the fabric both at least partially on and / or in the fibers (12) of the fabric (10) is present and also at least partially in which the fibers (12) enclosing first plastic material (13) is migrated. Data carrier (1) according to claim 12, characterized in that the printing (9) comprises a data carrier (1) individualizing information. Data carrier (1) according to one of claims 12 or 13, characterized in that the printing (9) has at least one further ink preparation, wherein the at least one ink preparation (16) and the at least one further ink preparation of the printing (9) cause different color impressions. Data carrier (1) according to one of claims 12 to 14, characterized in that the first plastic material (13) comprises polycarbonate and the second plastic material (19) comprises polyethylene terephthalate.

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