WO2015055813A1

WO2015055813A1 - Method for producing an individualized security document having recesses

Info

Publication number: WO2015055813A1
Application number: PCT/EP2014/072315
Authority: WO
Inventors: Arthur Mathea; Franziska Peinze; Stefan TRÖLENBERG; Jörg Fischer
Original assignee: Bundesdruckerei Gmbh
Priority date: 2013-10-18
Filing date: 2014-10-17
Publication date: 2015-04-23
Also published as: RU2016119044A3; DE102013221221A1; EP3057802B1; EP3057802A1; CN105682931A; CN105682931B; RU2674913C2; RU2016119044A

Abstract

The invention relates to a method for producing an individualized security document (90), comprising the steps: providing a plurality of substrate layers; assembling the substrate layers into a substrate layer stack; laminating the substrate layers assembled in the substrate layer stack into a lamination body; providing a digital printing apparatus; printing at least one marking region of an outer surface (19) of the lamination body (11) by means of the digital printing apparatus to save individualization information (18); wherein a micro-structure having a plurality of recesses (14) is imprinted into the lamination body (11) before printing into the outer surface (19) in the at least one marking region (7) and the printing occurs such that a portion of the printed ink penetrates into the recesses (14).

Description

A method of making a customized security document with indentations

The invention relates to a method for producing an individualized

Security document and a method for producing a customizable security document blank. In particular, the invention relates to a method for producing an individualized security document, wherein a colored, particularly preferably full-color customization information is introduced into a security document, and a method for producing a

Security document blank, which can be customized in color.

From the prior art it is known to provide security documents with information which are individually associated with the respective security document. Such individual information, which is also referred to as customization information, is, for example, a serial number of a document. Moreover, in the case of a plurality of security documents, it is customary to store information of a person in the security document as personalization information, which the

Security document is assigned. For a passport document, the

Personalization information such as a name, a first name, a date of birth, a place of residence, information on biometric features such as a

Body size, an eye color or even a fingerprint pattern or a face image to list some personalization features.

Security documents are considered to be documents which have at least one feature which makes copying, duplicating and / or falsifying or the like considerably more difficult or impossible. Include security documents

for example passports, identity cards, identity cards, access cards,

Driving licenses, visas, credit cards, postage stamps, securities, but also with

Security features provided tickets, authenticity seals or anti-counterfeit packaging, to enumerate some examples. Common to all of them is that at least one, usually several security features or

Include security elements that make it difficult or impossible to falsify, imitate, duplicate, and / or unauthorize.

From DE 10 2008 053 582 B3 a portable data carrier, for example a chip card is known in which a security feature by introducing recesses, Filling the recesses is produced with a translucent material and curing of the translucent material, wherein the translucent material contains constituents that can be excited by luminescence and UV or IR irradiation.

DE 10 2010 023 218 A1 describes a method for producing a

Security document with a watermark. In at least one opaque film, optionally several stacked opaque films, several

Recesses introduced that do not completely penetrate the at least one film or the stacked films. The recesses lead to a reduction in opacity. If the recesses have different depths, so can

different opacities in the range of different deep recesses can be achieved.

DE 10 2010 025 044 A1 discloses a method and a device for

Establishing a security document and a security document known. In a substrate of a security document holes are introduced on the surface and applied in this an ink. This is preferably designed such that it comprises colorants which diffuse into the substrate. The ink applied by printing is introduced deeper into the document than an ink printed only on the surface and is thus better protected against adulteration and / or damage during use.

In order to obtain particularly forgery-proof security documents, these nowadays comprise in the majority of cases a plurality of plastic layers

Laminationskörper. In such a lamination body can be a variety

different security features or security elements are integrated. It is customary, for example, to print the individual plastic layers partially or completely over the entire area by means of a lamination process prior to assembly, and to do so via the

To store customization information in the security document.

In particular, in embodiments in which the individual assembled plastic layers are made of the same thermoplastic material, can be created in this way almost monolithic lamination body, which greatly complicate a manipulation of the stored customization information. A prerequisite for this is, however, that the individualization information to a stored inside or in an inner layer and then a very good connection between the individual plastic layers is formed. As a rule, this is only possible in large production plants, so that production of such security documents has to be carried out centrally in one or a few production plants.

However, devices are known from the prior art, with which a storage of customization information can be done locally. In this case, the individualization information is usually printed on an outer surface of a security document blank. The printing is usually done by thermal transfer printing or inkjet printing and can be done in color. It is also known to use UV-curing printing preparations for this purpose. To complicate a manipulation of the printed customization information, the printed information is covered by another film or a lacquer layer. Such a further film is laminated, for example, to the document blank. In a decentralized device, however, the temperatures and pressures that would be necessary to achieve such a film with the rest can not be achieved

Security document blank to connect to a monolithic body. In addition, it is known, partially or completely holograms on the

To install customization information.

A disadvantage of the known method, however, is that the protective layers can often be removed without destruction, so that subsequently the printed

Customization information can be falsified or even completely removed and replaced. Subsequently, in many cases, the protective layer can either be replaced by an identical new protective layer or the previously removed protective layer can be applied again. Decentralized individualized security documents thus generally have a much lower level of security, especially with regard to subsequent ones

Distortions on.

The invention is therefore based on the object, an improved method for

To create an individualized security document in which

preferably colored, particularly preferably full-color customization information can be stored in the security document, which improved protection against adulteration compared to printed on the surface Has security documents. Furthermore, the object of the invention is to provide a method for producing a security document blank with which such individualization is possible.

The invention is based on the idea of providing or producing security document blanks in such a way that they comprise a lamination body in which a large number of security features are already integrated. The lamination body is formed and provided such that it has a plurality of recesses in an outer surface on an outer surface at least in a marking region. The individualization information is now applied to the outer surface in such a way that at least part of the individualization information penetrates into the recesses. A manipulation of the thus applied customization information is hardly possible, since in this case also at least the externa ßere material layer, are embossed in the wells, damaged. Furthermore, the individualization information in the

Wells are usually not completely overprinted by components of a forged and thus "new" customization information.

definitions

A security feature is a feature that makes it difficult or impossible to falsify, imitate, or unauthorize an item.

A security element is an entity that has at least one security feature. For the purpose of this definition, every security document also constitutes a security element.

A monolithic lamination body is considered to be a body produced from a plurality of different layers, in which the individual substrate layers are joined together in such a way that, due to the chemical structure, the layer boundaries existing in front of the lamination in the finished lamination body do not exceed

Phase transitions are detectable. It goes without saying for the person skilled in the art that the originally present different substrate layers are in the finished state

Lamination body can be determined, for example, based on the different admixtures of additives that the creation of the lamination body

used substrate layers prior to lamination. A lamination body that from a plastic layer colored in the volume by means of color pigments and a transparent color-neutral plastic layer to a monolithic one

Laminating body is assembled, has in the finished lamination body on different material layers, which show different properties with respect to an interaction with light. With regard to the chemical polymer structure, however, a phase transition in a monolithic lamination body can not be detected.

As colored a substance or preparation is considered, which causes a color impression in a human observer. Black and gray tones are not considered colored in this context. An object is considered to be colored when it causes two different color impressions in a human observer. Full color is an article that contains a multitude of color impressions from a spanned gamut spanned by three primary colors. For example, prints that are made with a multicolor printing system comprising as primary colors, for example, the colors cyan, yellow and magenta are considered to be full-color. The prerequisite is, of course, that the information to be printed is itself colored. In the case of full-color printing, it is also possible for parts to be printed with a black color. But it must also be colored parts.

As individualization information, any information is called, the one

is individually assigned to be produced security document. This means that this information differs for differently manufactured security documents. Personalization information refers to such individualization information as is associated with a person who manufactures or manufactures

Security document is or will be assigned.

As a digital printing device, a printing device provided for printing information in such a manner as to be successively manufactured

Pressure pieces each different information can be printed, without thereby a throughput of the printing device is significantly reduced or even setup times would be necessary. Inkjet printers or plotters are digital printing devices. The print image can be determined by a digital file. For example, other digital printing devices print by a transfer printing process. As an information layer, a plane inside a document body which has emerged from a printed surface of a substrate layer is referred to.

Preferred embodiments

In particular, a method for producing an individualized

Security document, which comprises the steps:

Providing a plurality of substrate layers;

Gathering the substrate layers into a substrate layer stack;

Laminating the substrate layers gathered in the substrate layer stack to a lamination body;

Providing a digital printing device;

Printing on at least one marking area of an outer surface of the

Lamination body by means of the digital printing device for storing

Individualization information;

in which

into which an outer surface of the lamination body prior to printing in the at least one marking region is embossed with a microstructure having a plurality of depressions and the printing is carried out so that a part of the printed ink penetrates into the depressions.

Furthermore, a method for producing a security document blank which has at least one marking region for printing on an outer surface is proposed, which comprises the steps:

Providing a plurality of substrate layers;

Gathering the substrate layers into a substrate layer stack;

characterized in that

in the one outer surface of the lamination body in the at least one

Marking a microstructuring is embossed with a variety of wells. The recesses are formed with opening dimensions on the outer surface in the range of 100 μηι to 400 μηι, preferably in the range of 150 μηι to 300 μηι and most preferably in the range of 200 μηι +/- 10 μηι. In such a choice, the diameters of the individual pits correspond approximately to the size of individual image pixels or a small number of image pixels when printing the customization information with a print resolution of about 600 dpi. A small number here is a natural number less than 10, preferably less than 5. In a preferred embodiment, the diameters of the depressions on the outer surface are thus selected so that they are of the order of a diameter of a pixel.

A depth of the recesses is preferably in the range between 30 μηι and 200 μηι particularly preferably between 50 μηι and 150 μηι.

Lamination bodies have proven to be particularly suitable in which the multiplicity of depressions of a marking area are respectively introduced in a regular grid. This creates the possibility of storing almost any information in the security document to be produced solely by the proportion of the individualization information that is printed in the recesses. Likewise, almost any arbitrary information can be printed so that one part is stored on the outer surface and another part is stored in the recesses. However, a prerequisite is that the depressions form a grid in which the distances of the depressions are small compared to the extent of the printed

Information structures are.

Preferably, a grid is formed so that the centers of the recess on the outer surface at a distance from each other, in the range of 1, 2 times to 10 times the diameter of the recess on the outer surface, preferably in the region of the 1, 3 times to 1, 4 times the diameter and most preferably corresponds to 1, 4 times the diameter.

It is also preferred that the recesses of a marking area all have the same geometric shape. This facilitates targeted printing in individual recesses when marking the security document blank. Further, added and simulated pits can be more easily recognized, since it is extremely difficult to exactly replicate pits having the same outer shape. this applies Especially when the individual wells also have the same dimensions in terms of their geometric shape in a plane of the outer surface.

In such an embodiment, the recesses occupy about 40% of the outer surface in the region of the regular grid. Such an area ratio of the openings can be realized without a stability of the lamination body in the

Affect the marking area.

An area fraction of about 40% of the Au ßenfläche the wells can assume even with an irregular arrangement of the wells.

Furthermore, embodiments are also possible in which the recesses make up an area fraction of the outer surface which is in the range of 5% to 30%. As a result, a stability and rigidity of the produced

Security document.

It is also possible to arrange the depressions in rows. The area fraction of the depressions, d. H. the openings, in the outer surface may be in a row in the range of 5% to 30%.

Preferably, the recesses are equidistant from one another in a row. If the rows, which have the same depression spacings and similar depressions, are oriented parallel to one another and have the same spacings to one another, this results in regular patterns. The area ratio of the recesses in the outer surface is preferably between 5% and 40%.

Particularly preferred is a geometric shape of the recesses, which has a polygonal cross-section in a plane of the surface of the security document blank or in a plane parallel to this surface. In particular, triangles, squares, rectangles, trapezoids, equilateral polygons, etc. are considered as angular cross-sectional shapes and shapes. Recesses with an angular cross-section are particularly difficult to replicate, so that such an angular cross-sectional shape or cross-sectional shape provides increased security against counterfeiting and counterfeiting. Also in an alternative embodiment, the area percentages of the apertures in the marking area may be 40%, but the cavities of the alternative embodiment have different geometrical shapes. To become again

different angular cross-sectional shapes preferred. However, it is also possible to use round, for example circular, oval cross-sectional shapes and forms. Also, a combination of angular and circular cross-sectional shapes and shapes is provided in some alternative embodiments.

In one embodiment, it is provided that the depressions by means of a

Laminating during lamination to the lamination body are embossed in a the outer surface of the lamination body forming substrate layer.

As a result, the depressions can be embossed and formed in an already executed step.

If the production takes place in a multiple use or several separate

Marking areas to be formed is in one embodiment

provided that a lamination sheet is prepared or prepared, which at a contact surface which is brought into contact with the Au ßenfläche of the lamination body forming substrate layer in contact, a plurality of separate structuring regions each having a plurality of protrusions, wherein the contact surface au is formed circumferentially around each patterning area, and in laminating by means of the plurality of patterning areas more

Marking areas are imprinted.

Alternatively, the formation of the plurality of depressions can take place by placing them in a sonotrode, while these are at least part of the outer surface of the

Lamination body is in contact, ultrasound is coupled and thereby the

Depressions are impressed.

In order to produce a multiple benefit again or to provide multiple marking areas in a security document or security document blank, in one embodiment it is provided that the sonotrode has a contact surface with a plurality of structuring regions formed separately from each other, each having a plurality of bulges and the contact surface in each case circumferentially around each Structuring region is formed just and by means of the sonotrode during the coupling of ultrasound into the outer surface of the lamination body a plurality of marking areas each having a plurality of depressions are impressed.

Preference is given to a multiple benefit before individualizing into individual

Safety document blanks parts. If individualization is carried out centrally, individualization can take place before separation. One embodiment thus provides for the lamination body to be divided into a plurality of security document blanks, each of which has at least one of the plurality of marking areas.

In one embodiment, the recesses of the marking area are impressed with different depths with respect to a flat smooth area of the outer surface, which surrounds the marking area with the plurality of recesses circumferentially. The proportion of information printed or to be printed in the recesses is thus introduced and stored at different levels or depths of the document relative to the outer surface of the security document blank. In the case of counterfeiting, this makes it particularly difficult to remove the old information that has to be manipulated.

In one embodiment, it is provided that a depth of the recesses relative to a flat smooth area of the outer surface, which peripherally surrounds the marking area with the multiplicity of recesses, is between 30 μm and 200 μm, more preferably between 50 μm and 150 μm.

More preferably, at least a portion of the recesses having a depth, with respect to a flat smooth portion of the outer surface surrounding the marking region with the plurality of recesses, imprinted, which is greater than or equal to a substrate layer thickness of the substrate layer, from which the outer surface of the Laminating body is formed. This will require at least the entire outer layer of material to be significantly damaged during a manipulation, or completely removed. This hampers a fake enormously.

To replicate the outer surface of the security document or the

Further complicating security document blanks is in one embodiment provided that in the embossing of the microstructuring projections are additionally produced in the marking area in the outer surface, wherein the projections relative to a level of Au ßenfläche the lamination body outside of the

Marking area, which is flat and smooth and surrounding the marking area circumferentially, projecting. As before, the marking area also includes the plurality of depressions, the ßenfläche compared to the level of the Au

Lamination body are recessed outside the marking area, that is, protrude into the lamination body. For example, protrusions can be without

Heating the outer layer of material at least in the region of the marking area to a temperature close to the glass transition temperature of the plastic material of the externa ßeren material layer or even to a temperature above the glass transition temperature does not form. In particular, cold-stamping methods and laser ablation methods for forming the pits have been eliminated since projections can not be realized with these methods.

In one embodiment, it is provided that at least the portion which

individualizing information pixel by pixel by means of a preparation in the

Wells is printed. In such an embodiment, the entire

Individualization information can be printed pixel-precise in the wells. In such a case, the outer material layer is preferably transparent and neutral in color.

Likewise, it is possible in other embodiments that the

Individualization information is applied over the entire area of the marking area, so that a part of the customization information is printed on the Au ßenfläche and a part of the customization information is printed in the wells. The individual information components, for example components of a facial image, are then correlated to one another in different levels of the finished one

Saved security document. This can be for verification purposes

Security document. Even if the outside on the Au

This is ascertainable in that the correlation between the proportion applied on the outer surface and the proportion of the individualization information printed in the recesses no longer completely exists. The individualization information can also in part way on the

Marking area be applied, so that part of the

Individualization information is printed on the Au ßenfläche and a part of the customization information is printed in the wells, but a part of the outer surface remains unprinted. In some embodiments, an information layer remains unprinted in the region of some depressions.

The individualization information is particularly preferred by means of a

Inkjet printing process by means of one or more preparations printed. Ink jet printing devices are able to target individual pixels in one

preselected color by means of a preparation to print. This makes it possible, for example, to print the preparation in the individual wells with pixel accuracy. In addition, it is possible by the use of three preparations, which each produce the color impression of a primary color in the printed state, full color individualization information, a color subtraction all color impressions in a spanned by the primary colors gamut for displaying the customization information can be used.

However, inkjet printing devices are particularly preferred for printing, in which, in addition to the color preparations, which convey a color impression of a primary color, further preparations are used which, for example, produce a black color impression or additionally other not in the gamut

Can cause color impressions.

It is particularly advantageous if the individualization information is provided with a

Security printing is applied, which is applied to an information layer in the production of the lamination body. Thus, the document body is particularly preferably provided with a security print on an information layer and the

Recesses are formed so that they have a depth that the

Material layer thickness of the outer ßer material layer corresponds. The share of

Personalization information passing through the wells on the

Information layer is printed, is thus connected to the security printing on the information layer. If a counterfeiter succeeds in removing portions of the individualization information printed on the information layer, this likewise leads to a change and / or damage to the security printing. Around to be able to recognize the security pressure in the overprinted area

For example, preparations are used which are translucent or transparent in the printed state, so that parts of the security printing can still be perceived despite being overprinted by the individualization information.

A particularly good connection with security printing occurs when

Preparations are used, the colorant at least partially diffuse into the material on which they are printed. In one embodiment, therefore, the individualization information is printed by means of at least one preparation comprising a solvent comprising the material of the exterior

Material layer and / or the information layer attacks, so that an in-diffusion of the colorant of the preparation in the walls of the recesses in the outer ßer material layer and / or the information layer is favored. An inseparable connection between the printed individualization information and the respective material layer receiving the information can also be achieved by or in addition to the fact that the preparation is produced on the basis of the same plastic material from which the respective material layer or layers are made.

For example, when using polycarbonates for the

Information layer and the outer material layer Preparations made on the basis of polycarbonate. Such preparations are for example in the

DE 10 2007 052 947 A1.

DE 10 2007 052 947 A1 teaches the use of a preparation comprising: A) 0.1 to 20% by weight of a binder with a polycarbonate derivative based on a geminally disubstituted dihydroxydiphenylcycloalkane, B) 30 to 99.9% by weight of one preferably C) 0 to 10% by weight, based on dry matter, of a colorant or colorant mixture, D) 0 to 10% by weight of a functional material or a mixture of functional materials, E) 0 to 30% by weight. % Additives and / or auxiliaries, or a mixture of such substances, the sum of the components A) to E) always being 100% by weight, as an ink-jet printing ink. With regard to the more concrete embodiment, reference is made to the cited published patent application, which is hereby incorporated in its entirety as part of this application.

In one embodiment, to promote penetration of the formulation into the wells and toward the information layer, the wells are formed to taper conically from the outer surface of the lamination body to the outer surface of the lamination body

Information layer.

Particularly preferably, the individualization information is printed in full color.

Particularly preferably, the individualization information comprises a facial image of a user to whom the security document is or will be assigned.

In order to protect the individualization information printed on the outer surface against manipulation and / or damage, in a preferred embodiment, after the individualization information has been printed on the outer surface, at least partially into the depressions on the information layer in the interior of the

Lamination is printed, applied a cover layer or substrate layer. This can be applied, for example, as a lacquer layer and be formed. Preferably, a transparent color-neutral lacquer is used for this purpose. It is also possible to laminate a transparent film on the lamination body. In general, however, can not reach the pressures or temperatures that would be necessary to achieve a monolithic compound of the externa ßeren protective layer with the rest of the provided by means of the document blank laminating body. With

Wells provided outer ßere material layer additionally favors the connection of the outer protective layer with the laminate body. Paint or glue can in the

Penetrate openings. This increases the connection area. The penetration of paint or adhesive in the wells prevents the subsequent overprinting of the customization information in the wells.

In addition to the indentations described above, which are tapered from the outer surface to the information layer, in some embodiments, a different geometry is also provided for the indentations. These recesses may have a cylindrical shape. With regard to a cross-sectional shape parallel to the outer surface, the depressions may be circular, oval, triangular, square, polygonal, eg star-shaped, hexagonal, etc. be formed. The different cross-sectional shapes and

Geometries can be combined with each other. In a lamination body pits of different shapes can be combined.

The individualized security documents produced in this way can be, on the one hand, security documents which are designed as plastic cards. Likewise, however, security documents can be personalized in this way, which are formed, for example, as a passport, in which a

Lamination body is integrated as a side.

The invention will be explained in more detail with reference to a drawing. Hereby show:

1 is a schematic representation of a plurality of substrate layers, the one to a

Lamination body of a security document blank are joined together;

Fig. 2a is a schematic view of a lamination body in cross-section;

2b shows a schematic view of a security document which results after the application of a protective layer to the lamination body according to FIG. 2a;

3 is a schematic plan view of a security document provided with individualization information;

FIG. 4a is a schematic representation of a utility layout; FIG.

4b is a schematic representation of a security document layout;

Figures 4c and 4d are schematic exemplary layouts for multi-well microstructuring;

4e is a schematic view of a plan view of a laminating sheet; Fig. 5a to 5g are schematic plan views of two wells a

Microstructure;

6a to 6g are schematic representations of cross-sectional views of depressions corresponding to the plan views of Figure 5a to 5g.

7a to 7g are schematic representations of cross-sectional views of

Lamination laminations for forming the recesses of Figs. 5a to 5g and 6a to 6g;

Fig. 8 is a schematic representation of a cross section through a

Document body; and

Fig. 9 is a further schematic representation of a cross section through a

Document body.

FIG. 1 schematically shows a stack 1 of substrate layers 2. These are assembled into a lamination body in a high pressure high temperature lamination process. The substrate layers 2 are preferably all made of the same plastic material, for example a polycarbonate material. Alternatively, the substrate layers may be made of another plastic material such as PVC, ABS, TPU, PET or the like. Preferably, the

Substrate layers 2 all made of the same plastic material. However, other embodiments may provide that the individual substrate layers 2 also be made

made of different plastic materials. The individual substrate layers 2 may have different colors and admixtures of additives.

Furthermore, the surfaces can be individually printed. Furthermore, it is possible to insert further security elements (not shown) between the substrate layers and / or to emboss security features.

An outer substrate layer 3 is preferably transparent and neutral in color, at least in a region 7 provided for later customization. Adjacent to the outer substrate layer 3, in the embodiment shown, a so-called information substrate layer 5 is arranged in the stack 1. This has a safety pressure 6 on an upper side 8. Typically, one includes

Security printing 6, for example, a guilloche pattern or the like. Of the

Security printing 6 can be executed in full color.

When assembling the substrate layers 2 of the stack 1, these are joined together to form a lamination body 1 1, which forms a security document blank 10. Such is shown schematically in Fig. 2a. During lamination, by means of a lamination sheet 60 into an outer surface 19 of the sheet to be formed

Lamination body 1 1 a microstructure embossed with a plurality of wells 14. A contact surface 61 of the laminating sheet 60 shown in FIG. 1 has a plurality of bulges 63 in a structuring region 62 for this purpose. Surrounding the structuring area, the contact surface is smooth and flat. In the lamination body 11, a smooth planar area is thereby created circumferentially around the marking area 7.

As can be seen in FIG. 2 a, the depressions 14 are open to an outer surface 19 of a document body 11. These penetrate in the illustrated

Embodiment, an outer material layer 13, the layer thickness 21 of the

Substrate layer thickness 27 of the outer substrate layer 3 (see Fig. 1) corresponds approximately. The recesses 14 penetrate the externa ßere material layer 13, which is formed from the outer substrate layer 3, completely up to an information layer 15 on which the security pressure 16 is formed. The security pressure is thereby preferably not changed or damaged. The information layer 15 is from the

Information substrate layer 5 emerged. The security pressure 16 is shown as a dashed line. It is noted at this point that the individual

Substrate layers 2 (see Fig. 1) are joined together to form a monolithic lamination body 1 1 in which, with respect to the plastic structure no phase transitions at those points are recognizable, were originally present at the substrate layer boundaries of the substrate layers 2 in the stack 1. They are alternative

Embodiments are possible in which the lamination body is not monolithic. In these embodiments, the lamination body may consist of

Substrate layers are made, which are made on the basis of different plastic materials. The depressions 14 preferably have a diameter of 22 μm in the order of 100 μm to 400 μm, particularly preferably in the range of 150 μm to 300 μm. The depressions 14 are preferably arranged in a regular or specific grid. In some embodiments, the recesses are arranged to collectively represent over their arrangement a pattern, eg a logo, characters or the like. The distances 23 from midpoints 24 are preferably in the range of 120 to 1000 μηι, particularly preferably in the range of 500 μηι, with a diameter 22 of the recesses 14 of 150 μηι. The illustrated opening sizes and distances are not to scale. A substrate layer thickness 27 of the outer ßeren

Substrate layer 3 is preferably in the range between 50 μηι and 200 μηι,

preferably in the range of about 50 μηι to 100 μηι.

In a marking area 17 an individualization information 18 is printed on an outer surface 19 of the lamination body 1 1. This is preferably done by means of a digital printing method, in particular an inkjet printing method. Individual pixels are printed with different preparations on the Au ßenfläche 19 of the lamination body 1 1. A portion of the individualization information 18-1 is hereby printed on the information layer 15 through the depressions 14. This means that the preparation used penetrates into the depressions 14 and, for example, is guided to the information layer 15 by means of a capillary effect. There, thus, a part 18-1 of the individualization information 18 connects to the security printing 16. Another part 18-2 of the individualization information remains on the outer surface 19 quasi on the webs between the depressions 14. The

Customization information 18 is thus stored in two different levels of the lamination body 1 1.

In one embodiment, the one part 18-1 of the individualization information is printed in the recesses 14 with pixel precision. In one embodiment, it may be provided that only the one part 18-1, which is printed with pixel precision in the depressions 14, is used as individualization information 18. In this case, there are thus no information components which are printed on the outer surface 19, i. the jetties between the

Recesses 14 remains. The preparations used may preferably be designed so that the resulting color impression of the entire customization information 18 is full-color. The preparations thus preferably comprise at least three preparations which, in the printed state, each produce a color impression of a primary color of a color system in a human observer. In addition, the preparations are preferably formed such that the formed pixels, in particular in the region of the recesses 14 are translucent, so that part of the security print 16 also remains visible in the region of the recesses 14 by the part of the individualization information 18-1 which is applied to the Information layer 15 is printed. As a result, an optimal connection of the individualization information 18 with the security pressure 16 is achieved.

In particular, it is advantageous if the outer material layer 13 is transparent and neutral in color, so that the security pressure can be viewed through the outer surface 19. This applies at least to the areas that are not printed opaque.

Preferably, preparations are used which contain a solvent fraction which dissolves the plastic of the outer material layer 13 and / or the information layer 15. As a result, a diffusion of colorants of the preparation in the material of the outer material layer 13, possibly including the walls 26 of the recesses 14, and the information layer 15 is supported and / or brought about.

In order to achieve a good connection of the individualization information 18, in particular with the security printing 16, the preparations are preferably produced on the basis of the plastic material from which the outer material layer 13 and / or the information layer 15 is produced.

FIG. 2 a clearly shows that further security elements 30, for example a hologram 31 and a microchip 32, can be integrated into the lamination body 11. These are only listed as exemplary security elements 30.

In order to protect the applied individualization information 18, in particular the further part 18-2, which is stored on the outer surface 19 of the lamination body 11, from mechanical damage and / or manipulation, a lacquer layer 40 is applied to the outer surface 19, which is applied in this way can be, that the recesses 14 are filled with the paint. This results in a smooth surface of the finished document body 80. In the illustrated embodiment, the document body 80 itself is the security document 90. In others

Embodiments, the document body 80 may be sewn into a passport that represents the finished security document.

In Fig. 3 is a schematic plan view of a card designed as a

Security document 90 shown. It can be seen that in a marking region 17, a facial image is formed, which is preferably formed in full color.

Schematically indicated is a grid of recesses 14. Part of the

Customization information 18 in the form of the facial image is thus printed by the depressions 14 on an information layer on which a security print 16 is applied. The pits do not have to exist over the entire area to which customization information is applied. Preferably, however, the recesses extend over the entire area, on the

Customization information will be printed to all

To adequately secure individualization information about the storage of an information component inside the lamination body 1 1.

In Fig. 4a, a utility layout for a lamination body 1 1 is shown schematically, which as a 20-fold benefit for individual card-shaped

Security document blanks is formed. In Fig. 4b, the layout is shown in plan view of such a security document blank 10. To recognize is the

Marking area 7, in which a plurality of unrepresented recesses is formed. In Fig. 4c and Fig. 4d preferred embodiments for the arrangement of the wells are shown. In both embodiments, the recesses 14 are arranged in a regular grid. By way of example, the cross sections are circular in a plane of the outer surface of the document body to be formed. A distance 23a between rows of structures 28 of depressions may be, for example, 1000 μm to 1500 μm. A distance 23b of recesses 14 within a

Structure row 28 may be, for example, between 500 and 1000 μηι. In order to be able to impress the plurality of recesses 14 in the individual marking regions 7, a laminating sheet 60 is provided, for example, which is shown in FIG. 4e and corresponds to the utility layout of FIG. 4a. For every manufacturer

Security document blank is on the contact surface 61, whose plan view is schematic 4e, a structuring region 62 is provided, which has a plurality of bulges (not shown) which are to be formed with the one

Wells correspond. In the illustrated embodiment, a marking region 7 (see Fig. 4b) is formed in each manufactured to be produced security document blanks 10 of the lamination body 1 1 of FIG. Alternatively, a plurality of marking areas with a microstructure 20 in one

Security document blank 10 are formed.

FIGS. 5a to 5g show plan views of two depressions of a microstructure 20, respectively. Corresponding cross-sectional views of

corresponding embossed recesses are correspondingly shown in FIGS. 6a to 6g. It can be seen that different

Mold embodiments are feasible. The embodiment of Fig. 5a and 6a shows circular, conically tapered recesses. A diameter 22 of the

Wells is between 150 and 300 μηι. A depth 35 of the recesses 14 is between 50 and 150 μηι. In the embodiment of Fig. 5b and 6b are the

Recesses as conically tapered, tapered recesses in the

Document body formed. A diameter 36 on a bottom 37 is about 100 μηι.

In the embodiment according to FIGS. 5c and 6c, the recesses are of circular cylindrical design. A grid spacing 22b within a structure row is, for example, 500 or 1000 μm. The recesses of the embodiment of Figs. 5d and 6d are also circular in plan view and taper inwardly, but are cylindrical in an upper portion 38 and spherical in a lower portion 39

educated.

The embodiment according to FIGS. 5e and 6e shows pointed recesses which have a square cross-section in the plane of the outer surface 19. Similar to the embodiment according to FIGS. 5 b and 6 b, in the embodiment according to FIGS. 5 f and 6 f, a tapering of the depression cross-section can be observed, but FIG

Deepening not pointed down but flat. Again, the cross-sectional shape is square. In the embodiment of FIGS. 5g and 6g, the recesses are not tapered and formed with a rectangular cross-section in the plane of the outer surface 19. The cross-sectional profiles of the depressions shown in FIGS. 6a to 6g correspond to those profiles which have to have bulges 63 of a laminating plate 60 on a contact surface 61 in order to impress the corresponding depressions in the outer surface 19 of the lamination body 11. Such laminating sheets 60 are shown schematically in Figs. 7a to 7g.

In FIG. 8, a cross section through a lamination body 1 1 is shown schematically by way of example. In the illustrated embodiment, 19 cylindrical depressions are formed in the surface. In the embodiment according to FIG. 9, cylindrical depressions are likewise formed, however, additional projections are formed between the depressions. These project against a smooth area 42, which is formed around the marking area 7 smoothly and flat. The recesses, however, penetrate into the lamination body 1 1 with respect to the level of the smooth area 42. In yet other embodiments, it can be provided that a depth of the depressions belonging to the microstructuring varies. Preferably, the variation takes place again in a regular grid, so that, for example, the depressions have alternately different depths. Of course, more than two depths can be realized.

As an alternative to a laminating sheet, as shown schematically in cross section in FIG. 4e in plan view or in FIGS. 7a to 7g, for example, a structured sonotrode can also be used. This also has a plurality of bulges in a corresponding geometric configuration analogous to Figures 7a to 7g. During impressing the depressions into a finished smooth lamination body, ultrasound is coupled into the sonotrode so that the surface is locally heated and the sonotrode penetrates into the surface 19 and forms the depressions 14. To form protrusions 41, have a laminating sheet or a sonotrode

corresponding indentations to receive material which is displaced during the formation of the wells, and to form corresponding to the projections.

Projections can be formed analogously to the shapes of the wells by means of different geometries.

It will be understood by those skilled in the art that only exemplary embodiments are described. The individual in the different embodiments described features can be used in any combination to carry out the invention.

LIST OF REFERENCE NUMBERS

1 stack

2 substrate layers

3 outer substrate layer

5 information layer

6 security pressure

7 marking area

8 top of the information layer

10 security document blank

1 1 lamination body

13 outer material layer

14 wells

15 information layer

16 security pressure

17 marking area

18 individualization information

18-1 part of the customization information

18-2 further part of the customization information

19 outer surface

21 layer thickness

22 diameter

23 distance

23a distance structure rows

23b Distance of the recesses in a structural row

24 midpoints

25 diameter (at the information layer)

26 walls

27 substrate layer thickness

28 Structure series

30 security elements

31 hologram

32 microchip

35 depth Diameter bottom

upper section lower section paint layer

Protrusion smooth area lamination sheet contact surface structuring area convexities concavities document body security document

Claims

claims

1 . Method for producing an individualized security document (90)

comprising the steps:

Providing a plurality of substrate layers;

Gathering the substrate layers into a substrate layer stack;

Laminating the compiled in the substrate layer stack

Substrate layers to a lamination body;

Providing a digital printing device;

Printing on at least one marking area of an outer surface (19) of the lamination body (1 1) by means of the digital printing device for storing individualization information (18);

characterized in that

in the lamination body prior to printing in the one Au ßenfläche (19) in the at least one marking area a microstructure is embossed with a plurality of wells and the printing is carried out so that a part of the printing ink penetrates into the wells.

2. A method for producing a security document blank which has at least one marking region (7) for printing on an outer surface (19), comprising the steps:

Providing a plurality of substrate layers;

Gathering the substrate layers into a substrate layer stack;

Laminating the compiled in the substrate layer stack

Substrate layers to a lamination body;

characterized in that

in which an outer surface (19) of the lamination body in the at least one marking region a microstructure with a plurality of recesses (14) is impressed.

3. The method according to claim 1 or 2, characterized in that the

Recesses (14) with opening dimensions (22) on the outer surface (19) in the range of 100 μηι to 400 μηι, preferably in the range of 150 μηι to 300 μηι and most preferably in the range of 200 μηι +/- 10 μηι be imprinted.

4. The method according to any one of claims 1 to 3, characterized in that the recesses (14) by means of a laminating sheet (60) during lamination to the laminate body in a the Au ßenfläche (19) of the lamination body (1 1) forming the substrate layer (2 ).

5. The method according to claim 4, characterized in that a lamination sheet (60) is prepared or produced on a contact surface (62), which during lamination with a the outer surface (19) of the lamination body (1 1) forming the substrate layer (2 ), a plurality of mutually separate structuring regions (61) each having a plurality of bulges (63), wherein the contact surface (61) each circumferentially around each

Structuring region (61) is formed flat, and when laminating by means of the plurality of structuring regions (61) several marking areas (7) are impressed.

6. The method according to claim 3, characterized in that in a sonotrode, while these ßenfläche at least with a portion of the Au

Lamination body (1 1) is in contact, ultrasound is coupled and thereby the depressions (14) are impressed.

7. The method according to claim 6, characterized in that the sonotrode a contact surface with a plurality of separately formed

Structuring regions each having a plurality of bulges and the contact surface is formed in each case circumferentially around each structuring region and by means of the sonotrode during the coupling of ultrasound into the Au ßenfläche (19) of the lamination body (1 1) a plurality of marking areas (7) each having a Variety of depressions (14) are imprinted.

8. The method according to any one of the preceding claims, characterized in that the lamination body (1 1) into several security document blanks (10) is divided, each having at least one of the plurality of marking areas (7).

9. The method according to any one of the preceding claims, characterized in that the plurality of recesses (14) of a marking area (7) are each introduced in a regular grid.

10. The method according to any one of the preceding claims, characterized in that the recesses (14) of a marking region (7) all have a same geometric shape.

1 1. Method according to one of the preceding claims, characterized in that the recesses (14) of the marking area (7) have a different depth relative to a flat smooth area (42) of the outer surface surrounding the marking area with the plurality of recesses.

12. The method according to any one of the preceding claims, characterized in that a depth of the recesses (14) relative to a flat smooth portion of the Au ßenfläche (19) surrounding the marking area with the plurality of recesses (14) circumferentially, between 30 μηι and 200 μηι, more preferably between 50 μηι and 150 μηι.

13. The method according to any one of the preceding claims, characterized in that a depth of the recesses (14), based on a flat smooth portion of the Au ßenfläche (19) surrounding the marking area (7) circumferentially with the plurality of wells, larger or is equal to a Substratschichtsträke the substrate layer (2), from which the externa ßere surface of the lamination body (1 1) is formed.

14. The method according to any one of the preceding claims, characterized in that when impressing the microstructuring additionally projections (41) in the marking area in the outer surface (19) are generated, wherein the

Projections (41) against a level of the outer surface of the

Lamination body (1 1) outside the marking area (7), which is formed flat and smooth and surrounding the marking area (7) circumferentially, projecting.