WO2009056354A1

WO2009056354A1 - Method for producing a security document and security document comprising a security feature that is dependent on the direction of viewing

Info

Publication number: WO2009056354A1
Application number: PCT/EP2008/009344
Authority: WO
Inventors: André LEOPOLD; Oliver Muth; Olaf Dressel; Arthur Mathea; Jörg Fischer; Andreas Bosien
Original assignee: Bundesdruckerei Gmbh
Priority date: 2007-10-31
Filing date: 2008-10-31
Publication date: 2009-05-07
Also published as: DE102008012422A1

Abstract

The invention relates to a method for producing a security document (1) comprising a document body consisting of several substrate layers (2-9), said document body comprising a security feature that is dependent on the direction of viewing. The invention also relates to said type of security document (1) that comprises a document body comprising several substrate layers (2 -9) that are connected together, in which first information in or on at least one of the substrate layers is applied to or inserted into, and a view restricting arrangement (22) is arranged above the at least one layer of substrates (2-9), that releases various parts (A-D) of first information (27) for viewing at least two different viewing angles. The first information (27) and/or the viewing restricting arrangement (22) are printed at least partially onto at least one substrate surface (2-9) by means of a digital printing method and as a result, personalised and/or individualised information is stored in the security document (1).

Description

Method for producing a security document and security document with view-dependent security feature

The invention relates to a method for producing a security document with a monolithic document body produced from a plurality of substrate layers and to such a security document which has a security feature which changes its appearance as a function of a viewing angle of the security document. In particular, the invention relates to such security documents made entirely of substrate layers that are plastic and / or polymer-based.

Prior art and background of the invention

A variety of methods for producing security documents and the resulting security documents are known from the prior art. Security documents are considered to be documents which have at least one security feature which is intended to make it difficult and / or impossible to falsify and / or imitate the security document or parts thereof. Security features are also used to verify authenticity of the security document. A variety of different security features are known in the art, which are incorporated in or applied to security documents.

A set of security features is designed so that different portions of stored information are observable at different viewing angles of the security document, or are enabled for viewing.

The stored information is preferably designed such that it is individualizing and / or personalizing. Information is individualized if it allows a distinction between two otherwise identical security documents. For example, a serial number of a security document is an individualizing information. Personalizing information is an individualizing information that includes information about a person associated with this security document. Personalizing information for one Security document, which may be, for example, a passport, an identification document, an identity card, a driver's license, an access authorization card, a check card, a credit card, etc., include, for example, a name, a first name, a date of birth, etc. In addition, biometric information such as a Facial image, fingerprint data, etc. are used as personalizing information. The individualizing and / or personalizing data can be stored in different ways in a security document. The storage can be carried out on the one hand in an encoding and / or encrypted so that a viewer can not easily remove the information from the security document. It is also possible to store the information graphically in the security document so that it can be perceived and captured by a human observer of the security document.

The term security document is understood here in a comprehensive sense and should also include value documents. In particular, as security documents: identity cards, passports, driver's licenses, ID cards, tokens, tax stamps, arbitrary chip cards, visas, tickets, postage stamps, credit cards, bank cards, banknotes, motor vehicle papers and adhesive labels (eg for product security) are considered.

EP 0 219 012 B1 describes a data carrier which is used, for example, as an identification document, credit card or the like, in which information is introduced by means of a laser beam in a narrower volume range, which in the form of changes in the optical properties due to an irreversible The change in material caused by the laser beam is visible, wherein the data carrier contains at least one transparent plastic layer, which is provided with a surface relief in the form of a lenticular grid at least in a partial region. In this case, at least a part of the information introduced by means of the laser beam is introduced through the lens grid, so that the change in the optical properties is limited to areas (pixels) whose radial extent is smaller than the diameter of the individual lenses, and where the information were recorded using the laser beam from at least two different directions in the lenticular array, read in the same direction in limited angular ranges and / or metrologically can be detected. About each of the lenses, which are also referred to as lenticular lenses, a laser beam, which is below a predetermined Angle is irradiated, individually focused. An irreversible material change, usually a pyrolysis up to charring (= material blackening) in the data carrier or security document takes place locally in the focus of the corresponding lenticular lens. If the document is viewed at the specified angle, this material blackening is visible. If, on the other hand, a different viewing angle is selected, the focus "wanders" to another position, which then becomes visible at this viewing angle. This other position can also be blackened with a laser beam at the other deviating angle. Thus, at different viewing angles, different volume areas of the data carrier are released for viewing by the lenticular lenses. The other areas, however, are not visible under a selected viewing angle. Thus, a lenticular lens arrangement may also be considered as a viewing angle dependent viewing restriction arrangement.

From the information stored in the data carrier at different angles of incidence, only a selection of pixels or portions of the total stored information is visible at a viewing angle.

In practice, a laser intensity when introducing the information is usually to be chosen so that not only at the focus, but also in an area around the focus, in particular perpendicular to the focal plane, which is determined by the different foci, a discoloration, especially blackening entry. This fact causes the stored image to be out of focus due to the imaging characteristics of the lens raster lenses.

From EP 1 322 480 B1 a recording medium, in particular a credit or identity card, with an upper layer and further layers is known, wherein the upper layer has on its outer side a plurality of lenticular lenses and on the back a display element which, upon tilting of the recording medium to At least one axis appears to be movable and wherein the lenticular lenses extend over only a portion of the entire outer side and the display element is a security element which is printed on an inner card layer. The upper layer with the lenticular lenses arranged thereon and the remaining layers of the recording medium are made of polycarbonate. As security element a security guilloche is described. Also known from WO 01/29764 A1 is a card-shaped data carrier with authenticity elements in the interior, which consists of at least one cover film and an optical read-out system arranged at the top through which the authenticity elements arranged in the interior can be read out from at least two different viewing directions with different information content are, wherein the optical readout system consists of a lens structure of Fresnel lenses. As a production method, it is stated that initially in a first method step the authenticity elements are inscribed in the card body through the cover film and in a second method step the microstructure necessary for reading different viewing directions is applied to or in the cover film.

From WO 02/11063 A2 an optically active structure for personalization of cards and the like and a method for their production is known. An optically effective microstructure is proposed for a data carrier of any type in which irreversible changes (information) are inscribed in at least one of a plurality of superimposed films of the data carrier by means of a laser beam, and the information has different information content from different viewing angles on the data carrier ( Tilting or wobbly image). The microstructure consists of mutually parallel, contiguous, approximately strip-shaped regions, both of which are transparent, wherein one region carries a diffractive structure and the other region is diffraction-free and the information to be read is arranged in regions below the microstructure. Also, this described microstructure provides a viewing angle dependent gaze constraint and may be referred to as a gaze constraint arrangement.

The prior art also includes so-called "hidden images" in which the information is encrypted by printing technology and arranged in such a way that it can be recognized by applying an adequate lenticular grid (for example in the form of an embossed film), for example in the document DE 199 00 856 C2 described.

The described methods and apparatuses for producing such security documents require costly sight-restricting arrangements, for example in the form of lenticular lenses or transparent diffractive structures. In addition, it is described with the Methods that are mostly based on blackening of individual areas in a document body, difficult to store colored information that are both individualizing and / or personalizing in the document body of the security document.

Technical problem of the invention

The object of the invention is therefore to provide a security document and a method for its production, with which a simplified production of a security document is possible, which comprises a viewing angle-dependent security element, which preferably comprises individualizing and / or personalizing information.

Broad features of the invention and preferred embodiments

To solve the technical problem, the invention teaches a method for producing a security document with a document body made of a plurality of substrate layers, comprising the steps of providing a plurality of substrate layers, introducing or applying a first information in or on at least one of the substrate layers, forming a viewing angle-dependent A viewing restriction arrangement that releases different portions of the first information for viewing under different document viewing angles in the document body, connecting the substrate layers to the document body, in particular by means of lamination in a heating / cooling press, the first information and / or the gaze restriction arrangement being at least partially be printed on at least one substrate layer surface of the substrate layers by means of a digital printing method and in this case a personalizing and / or individualis information is stored in the security document. It is understood by those skilled in the art that the above-mentioned process steps need not necessarily be performed in the order given. Furthermore, the invention teaches a security document, comprising a document body made of a plurality of substrate layers which are connected to one another, in which a first information is applied or applied in or on at least one of the substrate layers and a view restriction arrangement is formed above the at least one of the substrate layers, those under at least two different viewing angles releases different portions of the first information for viewing, the first information and / or the viewing angle-dependent viewing restriction arrangement being at least partially printed on at least one substrate layer surface of the substrate layers by means of a digital printing method and personalizing and / or individualizing information being stored in the security document , Digital printing processes are considered to be those printing processes which, when used as intended, are intended to print successively printed substrate layers with different individual print images. Digital printing methods include transfer printing, sublimation and diffusion transfer printing and re-transfer printing, and ink jet printing. A digital printing method such as an ink-jet printing method is capable of printing small dots (pixels) on a substrate layer surface in a fine pattern. Distances in which the individual pixels can be printed are in the order of the pixels or below. Any information can thus be targeted and easily printed individually and in color. This makes it possible to introduce the individualizing and / or personalizing information in a simple manner. A manufacturing process is simplified.

Preferably, the digital printing method is an ink-jet printing method.

In a preferred embodiment, the first information is the personalizing and / or individualizing information and is printed by the digital printing method. In this case, the individualizing and / or personalizing information can be printed and stored in a manner that enables a viewer to be able to perceive at least the portions of the information released in unencrypted form by means of the viewing restriction arrangement at a viewing angle. Likewise, it is possible to design the individualized and / or personalizing information in such a way that it is stored in the form of a code, for example a bar code or a two-dimensional pixel pattern, which can only be read and evaluated with the aid of a corresponding technical verification device. In a preferred embodiment it is provided that the personalizing and / or individualizing information is printed in color. By using a digital printing method such as an ink-jet printing method, it is easily possible to print multi-colored or colorful pictures or patterns, and thus also to print the individualizing and / or personalizing information multicolored or colorfully. A multicolor image is understood to mean an image that encompasses several colors. A colorful illustration is understood here to mean an image which causes more color impressions in a human observer than printing inks are used for the printing-technical production of the image. This means that at least one color impression is caused by a color subtraction. By color subtraction, a plurality of color impressions in a color space spanned by primary colors can be represented by arranging individual pixels of different monochrome inks or inks adjacent to each other so that the human eye perceives a mixed color. If printing inks or inks containing luminescent colorants are used, a multiplicity of color impressions of a color space spanned by primary colors, for example of a color system comprising the primary colors red, green and blue, can likewise be created accordingly.

Particularly high-quality and durable security documents are obtained when only substrate layers of plastic materials, preferably of thermoplastic polymers, are used as substrate layers onto which the personalizing information is printed by means of ink-jet printing. Particularly preferred are substrate layers of polycarbonate. Particularly preferably, the document body of the security document is produced as a monolithic document body from substrate layers which all comprise the same plastic material. For example, particularly stable and durable security documents can be produced that are made exclusively from polycarbonate films. These can be particularly advantageous and delamination / tamper-proof in a lamination process in a heating-cooling press, preferably cohesively connect with each other. A separation of the individual substrate layers from which the monolithic document body is made, is subsequently not possible without damage to the current state of knowledge. In one embodiment, lenticular lenses are embossed into one or more substrate layers as a viewing restriction arrangement. That is, the gaze restriction device is formed with a plurality of lenticular lenses on an outer substrate layer facing an upper surface of the security document.

In one embodiment, the first information is introduced by printing technology in the focal plane of the lenticular lenses. Here, it is possible that a printing ink or ink is used, the activating means, such as laser-sensitive pigments such as Lazerflair ^®, Merck KGaA ₁ Darmstadt, Germany, comprise, in order to increase laser absorption. The ink may additionally or alternatively include other colorants. If laser-sensitive pigments are used, it is possible to print the first information so that it appears transparent to a human observer. By using a laser beam, further information storage can then be stored via a local blackening in the individual direction-dependent foci. Because the first information (the printing ink or ink) can also be applied with thicknesses or thicknesses of less than 0.5 μm, an achievable resolution is considerably higher than when using substrate layers which are provided with laser-sensitive materials.

In one embodiment, it is provided that the first information is printed by means of a laser-sensitive printing ink or ink. Preferably, the first information is designed to be individualizing and / or personalizing. In such an embodiment, a laser engraving with a sufficiently intense, but large-area exposing laser can be done. This does not have to leave the contour of the information. The laser-sensitive printing ink or ink, which is already structured by printing, ie the first information, is made visible as a laser discoloration. For the introduction of the information, the gaze restricting devices, for example, the lenticular lenses, are not required in such a case that the first information is not printed on a flat surface but structuredly representing the personalizing information. They then serve only the directional readout of the first information. Since a laser engraving can be distinguished from a print, an additional feature compared to "merely printed" first information can be easily realized. An alternative embodiment of a gaze restriction assembly includes a grid applied to a substrate layer surface spaced above the substrate layer surface to which the first information is applied.

As a raster, a design is considered that has printed or printed areas and spaces or spaces arranged therebetween. The printed or printed areas and spaces may be formed regularly and irregularly and / or arranged.

In a vertical plan view of the grid, the portions of the first information located below the printed areas to be printed opaque are hidden. If you change the viewing direction, you can look under the opaque printed areas and perceive portions of the information that was previously hidden. For this, initially visible parts are hidden. The grid thus releases different portions of the first information for viewing, depending on a viewing direction or a viewing angle.

Another preferred embodiment of the invention provides that, when forming the gaze restriction arrangement, at least two different substrate layer surfaces are matched to one another and the plurality of substrate layers are assembled prior to bonding such that the at least two screens in the document body each have at least one substrate layer thickness the substrate layers are spaced apart from each other and disposed above the at least one substrate layer provided with the first information, and release different portions of the first information for viewing under at least two different viewing angles relative to a surface normal of an upper surface of the document body. Such a viewing restriction arrangement may, for example, comprise two strip-type screens whose strips each have a strip width which corresponds to a spacing between two adjacent strips. The two screens are printed on different substrate layer surfaces, preferably on an upper substrate layer surface and a lower substrate layer surface of one and the same transparent or translucent substrate layer so that the strips of both rasters are offset from each other by the strip width. If you look at it that way Substrate layer printed substrate substrate surface along the surface normal, ie at a viewing angle of 0 ° relative to the surface normal of the printed top of the substrate layer, information located under the grids are completely covered by the opaque strips of the grid. When viewed at a different angle, for example plus or minus 45 ° to the surface normal measured in a plane oriented perpendicular to a rectilinear orientation of the strips, up to 50% of an area becomes dependent on the thickness of the substrate visible below the viewing restriction arrangement. This case occurs, for example, when a substrate layer thickness corresponds to a line width of the lines of the two screens. The grid can be different, but each coordinated, be formed. Instead of straight lines with a uniform line width and uniform free spaces between the lines, the lines may have different line widths. Likewise, the printed areas and free spaces or spaces may have any other geometric shapes. These can be regular or irregular. By matched grids is meant grids which at a selected distance from one another, under at least one, preferably a plurality of viewing angles or viewing directions, enable sight axes through the restricted viewing device formed thereby, which are not released under other viewing directions or viewing angles.

The use of a gaze restraint arrangement which uses two rasters adapted to one another and arranged in different planes of the document body offers the advantage that the gaze restriction arrangement can also be applied to one or more substrate layers by printing technology. Overall, this significantly simplifies the production of the security document. For the application of the grid or the raster, any printing methods can be used, provided that no portions of the individualizing and / or personalizing information are stored in any of the rasters. However, it is preferred that at least part of a grid and / or one or more rasters be partially or completely produced by means of a digital printing method, in particular an inkjet printing method.

It is preferably provided that the substrate layers are brought together in such a way that at least a part of the first information flows along (or opposite to) one Layering direction of the substrate layers has a non-zero distance to the one or more grids of the viewing restriction arrangement in the document body. The greater a distance of the first information from the grids, the less critical is an exact positioning of the first information relative to the grids.

In order to prevent manipulation of the viewing restriction arrangement and / or the first information, it is provided in a preferred embodiment that the substrate layers are assembled such that the grid and / or the first information are each deposited on one in a substrate layer stack from which by laminating Document body is made, disposed inside substrate layer surface.

The first information is preferably introduced so that it is arranged in a region of the document body and that when viewing the upper surface of the document body at a viewing angle of 0 ° with respect to the surface normal of the upper surface through the at least two rasters to more than 50%, preferably more than 70%, preferably more than 90%, and most preferably completely occluded. Furthermore, it is possible for the at least two rasters to overlap one another at least partially. This means that, when viewing the security document body at an angle of view of 0 ° with respect to the surface normal of the upper surface layer, portions of the area in which the first information is stored is obscured by at least two of the at least two screens.

In addition to storing the personalizing and / or individualizing information within the first information, which is restricted by the gaze restriction arrangement with respect to a perception from a viewing angle, it is possible to code the individualizing and / or personalizing information alternatively and / or additionally in the gaze restriction arrangement. For this purpose, it is proposed to store the personalizing and / or individualizing information in at least one of the grids in such a way that the arrangement and / or configuration of the portions of the first information released under one of the at least two viewing angles represents the personalizing and / or individualizing information. This means that the individualizing information (whole or partially) is stored, regardless of the content of the first information, in the arrangement and geometric configuration of the shares released from the first information under at least one of the viewing angles. For example, it is possible that the portions of the first information released under one of the at least two viewing angles include and / or represent a bar code, an alphanumeric code, or even an imaging pattern. If the viewing restriction arrangement comprises at least two screens, then the individualizing and / or personalizing information is preferably not completely perceptible under all of the at least two viewing angles.

A particularly high level of protection is thus obtained if one part of the personalizing information is encoded in the first information and another part is encoded in one or at least two rasters.

The gaze restriction arrangement may extend over the entire area of a security document or only a portion thereof. The same applies to the first information.

In some embodiments, it is contemplated that a raster and the first information are printed in register on opposing substrate layer surfaces.

The gaze restriction assembly may comprise more than two mutually spaced mapped rasters

It is also possible that the first information is printed distributed over a plurality of substrate layer surfaces. This allows further optical effects to be achieved.

In principle, materials which are customary in the field of security and / or value documents can be used as materials for the substrate layers. Preferably, polymer layers are used. The polymer layers can, identically or differently, be based on a polymer material from the group comprising PC (polycarbonate, in particular bisphenol A polycarbonate), PET (polyethylene glycol terephthalate), PMMA (polymethyl methacrylate), TPU (thermoplastic polyurethane elastomers), PE (polyethylene), PP ( Polypropylene), PI (polyimide or poly-trans-isoprene), PVC (Polyvinyl chloride) and copolymers of such polymers. Preference is given to the use of PC materials, wherein, for example, but by no means necessarily, so-called low-T _g materials are used, in particular for the polymer layers, is printed on soft, and / or for the polymer layers, which with the or Polymer layers that are printed, on the side with the inkjet printing. Low-T _g -Materials are polymers whose glass transition temperature is below 140 ⁰ C.

The polymer layers can be filled or unfilled. The filled polymer layers contain in particular color pigments or other fillers. The polymer layers can also be dyed or colorless by means of dyes and in the latter case transparent or translucent.

It is preferred if the base polymer of at least one of the polymer layers to be joined contains identical or different mutually reactive groups, wherein react at a laminating temperature of less than 200 ⁰ C reactive groups of a first polymer layer with each other and / or with reactive groups of a second polymer layer. As a result, the lamination temperature can be lowered without jeopardizing the intimate bond of the laminated layers. In the case of various polymer layers having reactive groups, this is due to the fact that the various polymer layers can no longer be readily delaminated due to the reaction of the respective reactive groups and formation of a covalent bond. For there is a reactive coupling between the polymer layers to form a covalent bond, as it were a reactive lamination. Furthermore, because of the lower laminating temperature, it is possible to prevent a change in the colored printing ink, in particular a color change. It is preferred in this case if the glass transition temperature T _{9 of} the at least one polymer layer before thermal lamination is less than 120 ^° C. (or less than 110 ^° C. or less than 100 ^° C.), the glass transition temperature of this polymer layer after thermal lamination Reaction of reactive groups of the base polymer of the polymer layer to each other by at least 5 ⁰ C, preferably at least 20 ⁰ C, higher than the glass transition temperature before the thermal lamination. In this case, not only is a reactive coupling of the layers to be laminated together carried out, but rather an increase in the molecular weight and thus in the glass transition temperature takes place by crosslinking of the polymer within the layer and between the layers Layers. This further complicates delamination, especially since in a manipulation attempt, the high delamination temperatures necessary, for example, irreversibly damage the colors and thus destroy the document. The lamination temperature when using such polymer materials is preferably less than 180 ^° C., more preferably less than 150 ^° C. The selection of suitable reactive groups is possible without difficulty for a person skilled in the art of polymer chemistry. Exemplary reactive groups are selected from the group comprising -CN, -OCN, -NCO, -NC, -SH ₁ -S _x , -Tos, -SCN, -NCS, -H, epoxy (-CHOCH ₂ ), -NH ₂ , -NN ⁺ , -NN-R, -OH, -COOH, -CHO, -COOR, -HaI (-F, -Cl, -Br, -I), -Me-HaI (Me = at least divalent metal, for example Mg), -Si (OR) ₃ , -SiHaI ₃ , -CH = CH ₂ , and -COR, where R can be any reactive or non-reactive group, for example -H, -HaI, C ₁ -C ₂₀ - Alkyl, C ₃ -C ₂₀ aryl, C ₄ -C ₂₀ -ArAlkyl, each branched or linear, saturated or unsaturated, optionally substituted, or corresponding heterocycles having one or more identical or different heteroatoms N, O, or S. Other reactive Of course, groups are possible. These include the reaction partners of the Diels-Alder reaction or a metathesis. The reactive groups may be attached directly to the base polymer or linked to the base polymer via a spacer group. Suitable spacer groups are all spacer groups known to the person skilled in the art of polymer chemistry. The spacer groups may also be oligomers or polymers which impart elasticity, whereby a risk of breakage of the security and / or value document is reduced. Such elasticity-promoting spacer groups are known to the person skilled in the art and therefore need not be further described here. By way of example only, spacer groups may be mentioned which are selected from the group comprising - (CH ₂ ) _n -, - (CH ₂ -CH ₂ -O) _n -, - (SiR ₂ -O) _n -, - (C ₆ H ₄ J _n -, - (C ₆ H ₁₀ ) _n -, C ₁ -C _n -alkyl, C ₃ -C _{(n + 3)} -aryl, C ₄ -C _{(n + 4)} -ArAlkyl, in each case branched or linear , saturated or unsaturated, optionally substituted, or corresponding heterocycles having one or more identical or different heteroatoms O, N, or S, where n = 1 to 20, preferably 1 to 10. Regarding further reactive groups or possibilities of modification, reference is made to FIGS Reference "Ullmann ^'s Encyclopaedia of Industrial Chemistry", Wiley Verlag, electronic edition 2007. In the above discussion, the term "base polymer" refers to a polymer structure which does not bear any groups reactive under the lamination conditions used to act homopolymers or copolymers. There are also compared to the polymers mentioned modified polymers.

For ink-jet printing, in particular on polycarbonate substrate layers, in principle all customary inks can be used. Preference is given to the use of a preparation comprising: A) 0.1 to 20 wt .-% of a binder with a polycarbonate derivative, B) 30 to 99.9 wt .-% of a preferably organic solvent or solvent mixture, C) 0 to 10 wt D) 0 to 10% by weight of a functional material or a mixture of functional materials, E) 0 to 30% by weight of additives and / or auxiliaries , or a mixture of such substances, wherein the sum of the components A) to E) always yields 100 wt .-%, as an ink jet ink. Such polycarbonate derivatives are highly compatible with polycarbonate materials, in particular with polycarbonates based on bisphenol A, such as, for example, Makrofol® films. In addition, the polycarbonate derivative used is stable to high temperatures and shows no discoloration at lamination typical temperatures up to 200 ⁰ C and more, whereby the use of the above-described low-T _g materials is not necessary. In particular, the polycarbonate derivative may contain functional carbonate structural units of the formula (I)

(D

wherein R ¹ and R ² are independently hydrogen, halogen, preferably chlorine or bromine, CRCA alkyl, C ₅ -C ₆ cycloalkyl, C ₆ -C ₀ aryl, preferably phenyl, and C ₇ -C ₂ aralkyl preferred Phenyl-C _r C ₄ alkyl, especially benzyl; m is an integer from 4 to 7, preferably 4 or 5; R ³ and R ^{4 are} individually selectable for each X, independently of one another is hydrogen or C ¹ -C ⁶ alkyl; X carbon and n an integer greater than 20, with the proviso that on at least one atom X, R ³ and R ^{4 are} simultaneously alkyl. It is preferred for X, R ³ and R ^{4 to be} simultaneously alkyl at 1 to 2 atoms, in particular only at one atom. R ³ and R ⁴ may be in particular methyl. The X atoms alpha to the diphenyl-substituted C atom (C1) may not be dialkyl-substituted. The X atoms beta to C1 may be disubstituted with alkyl. Preferably, m = 4 or 5. The polycarbonate derivative can be prepared, for example, on the basis of monomers, such as 4,4 ^' - (3,3,5-trimethylcyclohexane-1,1-diyl) diphenol, 4,4 ^' - (3,3-) dimethylcyclohexane-1, 1-diyl) diphenol, or 4,4 ^' - (2,4,4-trimethylcyclopentane-1, 1-diyl) diphenol. Such a polycarbonate derivative can be prepared, for example, according to the document DE 38 32 396.6 from diphenols of the formula (Ia), the disclosure of which is hereby incorporated in full in the disclosure of this description. It is possible to use both a diphenol of the formula (Ia) to form homopolycarbonates and a plurality of diphenols of the formula (Ia) to form copolycarbonates (meaning of radicals, groups and parameters, as in formula I).

(Ia)

In addition, the diphenols of the formula (Ia) may also be mixed with other diphenols, for example with those of the formula (Ib)

HO - Z - OH (Ib),

be used for the preparation of high molecular weight, thermoplastic, aromatic polycarbonate derivatives.

Suitable other diphenols of the formula (Ib) are those in which Z is an aromatic radical having 6 to 30 C atoms which contain one or more aromatic nuclei may be substituted and may contain aliphatic radicals or cycloaliphatic radicals other than those of the formula (Ia) or heteroatoms as bridge members. Examples of the diphenols of the formula (Ib) are: hydroquinone, resorcinol, dihydroxydiphenyls, bis (hydroxyphenyl) alkanes, bis (hydroxyphenyl) cycloalkanes, bis (hydroxyphenyl) sulfides, bis (hydroxyphenyl) ether, bis (hydroxyphenyl) ether, bis (hydroxyphenyl) ether, (hydroxyphenyl) ketones, bis (hydroxyphenyl) sulfones, bis (hydroxyphenyl) sulfoxides, alpha, alpha 'bis (hydroxyphenyl) diisopropylbenzenes and their ring-alkylated and ring-halogenated compounds. These and other suitable diphenols are described, for example, in the publications US Pat. No. 3,028,365, 2,999,835, 3,148,172, 3,275,601, 2,991, 273, 3,271, 367, 3,062,781, 2,970,131 and 2,999,846, in the publications DE-A 1 570 703, 2 063 050, 2 063 052, 2 211 956, FR-A-1 561 518 and in the monograph "H. Schnell, Chemistry and Physics of Polycarbonates, Interscience Publishers, New York 1964", which are hereby incorporated in their entirety in the disclosure of the present application become. Preferred other diphenols are, for example: 4,4'-dihydroxydiphenyl, 2,2-bis (4-hydroxyphenyl) propane, 2,4-bis (4-hydroxyphenyl) -2-methylbutane, 1, 1-bis ( 4-hydroxyphenyl) cyclohexane, alpha, alpha -bis (4-hydroxyphenyl) -p-diisopropylbenzene, 2,2-bis- (3-methyl-4-hydroxyphenyl) -propane, 2,2-bis (3-methyl) chloro-4-hydroxyphenyl) -propane, bis (3,5-dimethyl-4-hydroxyphenyl) -methane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) -propane, bis (3, 5-dimethyl-4-hydroxyphenyl) sulfone, 2,4-bis (3,5-dimethyl-4-hydroxyphenyl) -2-methylbutane, 1, 1-bis (3,5-dimethyl-4-hydroxyphenyl) -cyclohexane, alpha, alpha-bis (3,5-dimethyl-4-hydroxyphenyl) -p-diisopropylbenzene, 2,2-bis (3,5-dichloro-4-hydroxyphenyl) -propane and 2,2-bis - (3,5-dibromo-4-hydroxyphenyl) propane. Particularly preferred diphenols of the formula (Ib) are, for example: 2,2-bis (4-hydroxyphenyl) propane, 2,2-bis (3,5-dimethyl-4-hydroxyphenyl) -propane, 2,2-bis - (3,5-dichloro-4-hydroxyphenyl) -propane, 2,2-bis (3,5-dibromo-4-hydroxyphenyl) -propane and 1, 1-bis (4-hydroxyphenyl) -cyclohexane. In particular, 2,2-bis (4-hydroxyphenyl) propane is preferred. The other diphenols can be used both individually and in a mixture. The molar ratio of diphenols of the formula (Ia) to the optionally used other diphenols of the formula (Ib) should be between 100 mol% (Ia) to 0 mol% (Ib) and 2 mol% (Ia) to 98 mol -% (Ib), preferably between 100 mol% (Ia) to 0 mol% (Ib) and 10 mol% (Ia) to 90 mol% (Ib) and especially between 100 mol% (Ia) to 0 mol% (Ib) and 30 mol% (Ia) to 70 mol% (Ib). The high molecular weight polycarbonate derivatives from the diphenols of the formula (Ia), optionally in combination with other diphenols, can be prepared by the known polycarbonate production processes. The different diphenols can be both random and blockwise be linked together. The polycarbonate derivatives used can be branched in a manner known per se. If the branching is desired, this can in known manner by condensing small amounts, preferably amounts of 0.05 to 2.0 mol% (based on diphenols), of trifunctional or more than trifunctional compounds, in particular those with three or more than three phenolic hydroxyl groups can be achieved. Some branching agents having three or more than three phenolic hydroxyl groups are: phloroglucinol, 4,6-dimethyl-2,4,6-tri- (4-hydroxyphenyl) -heptene-2,4,6-dimethyl-2,4,6- tri- (4-hydroxyphenyl) heptane, 1,3,5-tri (4-hydroxyphenyl) benzene, 1,1,1-tri- (4-hydroxyphenyl) ethane, tri- (4-hydroxyphenyl) - phenylmethane, 2,2-bis [4,4-bis (4-hydroxyphenyl) cyclohexyl] -propane, 2,4-bis (4-hydroxyphenyl-isopropyl) -phenol, 2,6-is- (2 -hydroxy-5-methyl-benzyl) -4-methylphenol, 2- (4-hydroxyphenyl) -2- (2,4-dihydroxyphenyl) -propane, hexa- [4- (4-hydroxyphenyl-isopropyl) -phenyl-orthoterephthalic acid ester , Tetra (4-hydroxyphenyl) methane, tetra- [4- (4-hydroxyphenyl-isopropyl) -phenoxy] -methane and 1,4-bis- [4 ', 4 "-dihydroxytriphenyl) -methyl] -benzene Other trifunctional compounds include 2,4-dihydroxybenzoic acid, trimesic acid, cyanuric chloride and 3,3-bis- (3-methyl-4-hydroxyphenyl) -2-oxo-2,3-dihydroindole, as chain terminators for controlling the molecular weight which is known per se the polycarbonate deriva te serve monofunctional compounds in conventional concentrates. Suitable compounds are, for example, phenol, tert-butylphenols or other alkyl-substituted phenols. For controlling the molecular weight, in particular small amounts of phenols of the formula (Ic) are suitable

(Ic) where R is a branched C ₈ and / or C ₉ alkyl radical. Preferably, in the alkyl radical R, the proportion of CH ₃ protons between 47% and 89% and the proportion of CH and CH ₂ - protons between 53% and 11%; also preferably R is in the o- and / or p-position to the OH group, and more preferably the upper limit of the ortho-portion is 20%. The chain terminators are generally used in amounts of 0.5 to 10, preferably 1, 5 to 8 mol%, based on diphenols used. The polycarbonate derivatives may preferably be prepared according to the interfacial behavior (compare H. Schnell "Chemistry and Physics of Polycarbonates", Polymer Reviews, Vol. IX, page 33ff., Interscience Publ. 1964) are prepared in a conventional manner. In this case, the diphenols of the formula (Ia) are dissolved in an aqueous alkaline phase. For the preparation of copolycarbonates with other diphenols, mixtures of diphenols of the formula (Ia) and the other diphenols, for example those of the formula (Ib), are used. To regulate the molecular weight, chain terminators of, for example, the formula (Ic) can be added. Then, in the presence of an inert, preferably polycarbonate-dissolving, organic phase is reacted with phosgene by the method of interfacial condensation. The reaction temperature is between 0 ⁰ C and 40 ⁰ C. The optionally used branching agents (preferably 0.05 to 2.0 mol%) can be either presented with the diphenols in the aqueous alkaline phase or dissolved in the organic solvent added before phosgenation become. In addition to the diphenols of the formula (Ia) and, if appropriate, other diphenols (Ib), their mono- and / or bis-chlorocarbonic acid esters may also be used, these being added dissolved in organic solvents. The amount of chain terminators and of branching agents then depends on the molar amount of diphenolate radicals corresponding to formula (Ia) and optionally formula (Ib); When using chloroformates the amount of phosgene can be reduced accordingly in a known manner. Suitable organic solvents for the chain terminators and optionally for the branching agents and the chloroformates are, for example, methylene chloride, chlorobenzene and in particular mixtures of methylene chloride and chlorobenzene. Optionally, the chain terminators and branching agents used can be dissolved in the same solvent. For example, methylene chloride, chlorobenzene and mixtures of methylene chloride and chlorobenzene serve as the organic phase for the interfacial polycondensation. The aqueous alkaline phase used is, for example, NaOH solution. The preparation of the polycarbonate derivatives by the interfacial process can be catalyzed in a conventional manner by catalysts such as tertiary amines, in particular tertiary aliphatic amines such as tributylamine or triethylamine; the catalysts can be used in amounts of 0.05 to 10 mol%, based on moles of diphenols used. The catalysts can be added before the beginning of the phosgenation or during or after the phosgenation. The polycarbonate derivatives can be prepared by the known method in the homogeneous phase, the so-called "pyridine process" and by the known melt transesterification process using, for example, diphenyl carbonate instead of phosgene. The polycarbonate derivatives may be linear or branched, they are homopolycarbonates or copolycarbonates based on the diphenols of the formula (Ia). By arbitrary composition with other diphenols, in particular with those of the formula (Ib), the polycarbonate properties can be varied in a favorable manner. In such copolycarbonates, the diphenols of the formula (Ia) are present in amounts of from 100 mol% to 2 mol%, preferably in amounts of from 100 mol% to 10 mol% and in particular in amounts of from 100 mol% to 30 mol% %, based on the total amount of 100 mol% of diphenol units contained in polycarbonate derivatives. The polycarbonate derivative may be a copolymer comprising, in particular consisting of, monomer units M1 based on the formula (Ib), preferably bisphenol A, and monomer units M2 based on the geminally disubstituted dihydroxydiphenylcycloalkane, preferably the 4,4 ^' - (3,3,5- Trimethylcyclohexan-1, 1-diyl) diphenols, wherein the molar ratio M2 / M1 is preferably greater than 0.3, in particular greater than 0.4, for example greater than 0.5. It is preferred that the polycarbonate derivative has a weight average molecular weight of at least 10,000, preferably from 20,000 to 300,000.

In principle, component B may be substantially organic or aqueous. Substantially aqueous means that up to 20% by weight of component B) can be organic solvents. Substantially organic means that up to 5% by weight of water may be present in component B). Component B preferably contains one or consists of a liquid aliphatic, cycloaliphatic, and / or aromatic hydrocarbon, a liquid organic ester and / or a mixture of such substances. The organic solvents used are preferably halogen-free organic solvents. Particularly suitable are aliphatic, cycloaliphatic, aromatic hydrocarbons, such as mesitylene, 1, 2,4-trimethylbenzene, cumene and solvent naphtha, toluene, xylene; (organic) esters such as methyl acetate, ethyl acetate, butyl acetate, methoxypropyl acetate, ethyl 3-ethoxypropionate. Preference is given to mesitylene, 1, 2,4-trimethylbenzene, cumene and solvent naphtha, toluene, xylene, methyl acetate, ethyl acetate, methoxypropyl acetate. Ethyl 3-ethoxypropionate. Very particular preference is given to mesitylene (1, 3,5-trimethylbenzene), 1, 2,4-trimethylbenzene, cumene (2-phenylpropane), solvent naphtha and ethyl 3-ethoxypropionate. A suitable solvent mixture comprises, for example, L1) 0 to 10% by weight, preferably 1 to 5% by weight, in particular 2 to 3% by weight, mesitylene, L2) 10 to 50% by weight, preferably 25 to 50% by weight %, in particular 30 to 40 wt.%, 1-methoxy-2-propanol acetate, L3) 0 to 20 wt.%, preferably 1 to 20 wt.%, in particular 7 to 15 wt.%, 1 , 2,4-trimethylbenzene, L4) from 10 to 50% by weight, preferably 25 to 50 wt.%, in particular 30 to 40 wt.%, ethyl 3-ethoxypropionate, L5) 0 to 10 wt.%, preferably 0.01 to 2 wt.%, in particular 0.05 to 0.5 wt .-%, cumene, and L6) 0 to 80 wt .-%, preferably 1 to 40 wt .-%, in particular 15 to 25 wt .-%, solvent naphtha, wherein the sum of the components L1 to L6 always 100 wt .-% results. The polycarbonate derivative typically has a weight average molecular weight of at least 10,000, preferably from 20,000 to 300,000.

The preparation may contain in detail: A) 0.1 to 10 wt .-%, in particular 0.5 to 5 wt .-%, of a binder with a polycarbonate derivative based on a geminal disubstituted dihydroxydiphenylcycloalkane, B) 40 to 99.9 wt %, in particular 45 to 99.5% by weight, of an organic solvent or solvent mixture, C) 0.1 to 6% by weight, in particular 0.5 to 4% by weight, of a colorant or colorant mixture, D ) 0.001 to 6 wt .-%, in particular 0.1 to 4 wt .-%, of a functional material or a mixture of functional materials, E) 0.1 to 30 wt .-%, in particular 1 to 20 wt .-%, Additives and / or auxiliaries, or a mixture of such substances.

As component C, if a colorant is to be provided, basically any colorant or colorant mixture comes into question. Colorants are all colorants. This means that it can be both dyes (a review of dyes Ullmann's Encyclopedia of Indutrial Chemistry, Electronic Release 2007, Wiley Publishing, Chapter "Dyes, General Survey") as well as pigments (a review of organic and inorganic pigments are Ullmann's Encyclopedia of Industrial Chemistry, Electronic Release 2007, Wiley Verlag, chapter "Pigments, Organic" and "Pigments, Inorganic"). Dyes should be soluble or (stably) dispersible or suspendible in the component B solvents. Furthermore, it is advantageous if the colorant at temperatures of 160 ° C and more for a period of more than 5 min. stable, in particular color-stable. It is also possible that the colorant is subjected to a predetermined and reproducible color change under the processing conditions and is selected accordingly. In addition to the temperature stability, pigments must be present in particular in the finest particle size distribution. In the practice of ink jet printing, this means that the particle size should not exceed 1, 0 microns, otherwise blockages in the printhead are the result. As a rule, nanoscale solid-state pigments and dissolved dyes have proven. The colorants may be cationic, anionic or even neutral. Just as examples of colorants that can be used in ink-jet printing are called its: Brilliant Black Cl. No. 28440, Chromogen Black Cl. No. 14645, direct deep black E Cl. No. 30235, true black salt B Cl. No. 37245, true black salt K Cl. No. 37190,

Sudan Black HB Cl. 26150, Naphtol Black Cl. No. 20470, Bayscript® Black Liquid, Cl. Basic Black 11, Cl. Basic Blue 154, Cartasol® Turquoise K-ZL liquid, Cartasol® Turquoise K-RL liquid (Cl. Basic Blue 140), Cartasol Blue K5R liquid. Suitable are the

Further z. For example, the commercially available dyes Hostafine® Black TS liquid (sold by Clariant GmbH Germany), Bayscript® Black Liquid (Cl mixture, sold by Bayer AG Germany), Cartasol® Black MG Liquid (CI Basic Black 11, Registered Trademark of Clariant GmbH Germany), Flexonylschwarz® PR 100 (E Cl. No. 30235, marketed by Hoechst AG), Rhodamine B, Cartasol® Orange

K3 GL, Cartasol® Yellow K4 GL, Cartasol® K GL, or Cartasol® Red K-3B. Furthermore, anthraquinone, azo, quinophthalone, coumarin, methine, perinone, and / or pyrazole dyes, eg available under the trade name Macrolex®, can be used as soluble colorants. Further suitable colorants are described in the reference Ullmann ^'s Encyclopedia of Industrial Chemistry, Electronic Release 2007, Wiley Verlag, chapter "Colorants Used in Ink Jet Inks". Well-soluble colorants lead to an optimal integration into the matrix or the binder of the print layer. The colorants may be added either directly as a dye or pigment or as a paste, a mixture of dye and pigment together with another binder. This additional binder should be chemically compatible with the other components of the formulation. If such a paste is used as a colorant, the amount of component B refers to the colorant without the other components of the paste. These other components of the paste are then subsumed under the component E. When using so-called colored pigments in the scale colors cyan-magenta-yellow and preferably also (soot) black solid color images are possible.

Component D comprises substances that can be seen directly by the human eye or by the use of suitable detectors using technical aids. Here are the materials known to those skilled in the art (see also van Renesse, Optica! Document security, 3rd ed., Artech House, 2005), which are used to secure value and security documents become. These include luminescent substances (dyes or pigments, organic or inorganic) such as photoluminophores, electroluminophores, Antistokes luminophores, fluorophores but also magnetizable, photoacoustically addressable or piezoelectric materials. Furthermore, Raman-active or Raman-reinforcing materials can be used, as well as so-called barcode materials. Again, the preferred criteria are either the solubility in the component B or pigmented systems particle sizes <1 micron and a temperature stability for temperatures> 160 ⁰ C in the sense of the comments on component C. Functional materials can be added directly or via a paste, ie a mixture with a further binder, which then forms part of component E, or the binder of component A.

In addition to the abovementioned luminescent substances and Raman-active substances, it is also possible to use so-called laser-sensitive materials which are used in the laser marking known in the art and which under certain circumstances also function as colorants (component C). Examples include interference pigments such as Lazerflair® or Iriodin® LS, Colorcrypt®, Colorcode®, Colorstream® from Merck or carbon black or carbon black (eg: Cabot Regal). However, other absorber materials known to the person skilled in the art are also suitable, as long as they absorb a corresponding wavelength of a "marking laser." As a rule, solid state lasers (Nd: YAG = 1064 nm, and its higher harmonic wavelengths) or CO ₂ laser (with a maximum wavelength in the range of 10 μm).

Preference is given to using those pigments which have at least one transparent electrically conductive layer on a substrate which is selected from the group consisting of TiO ₂ , synthetic or natural mica, other phyllosilicates, glass, SiO ₂ and / or Al ₂ O ₃ .

In general, the electrically conductive layer or the electrically conductive material comprises one or more conductive doped metal oxides, such as tin oxide, zinc oxide, indium oxide or titanium oxide, which with gallium, aluminum, indium, thallium, germanium, tin, phosphorus, arsenic, antimony, Selenium, tellurium and / or fluorine are doped. The above-mentioned transparent conductive pigments, if a substrate is present, may have one or more further layers above and / or below the conductive layer. These layers may contain metal oxides, metal oxide hydrates, metal suboxides, metal fluorides, metal nitrides, metal oxynitrides or mixtures of these materials.

As a particularly preferred material for a transparent electrically conductive pigment, a mica coated with at least one electrically conductive metal oxide layer is used. Particularly preferred here is a mica pigment coated with a layer of antimony-doped tin oxide, a mica pigment coated with a titanium oxide layer, a silicon oxide layer and an antimony-doped tin oxide layer, or a mica pigment coated with an antimony-doped tin oxide layer a further metal oxide, in particular a titanium oxide layer is coated.

Although, of course, classic pearlescent pigments such as TiO ₂ platelets, basic lead carbonate, BiOCl pigments or fish silver pigments are also suitable, it is preferred to use interference pigments or metallic effect pigments which comprise at least one coating of a metal, metal oxide, metal oxide hydrate or mixtures thereof on an inorganic platelet-like support. a metal mixed oxide, metal suboxide, metal oxynitride, metal fluoride, BiOCl or a polymer. The metallic effect pigments preferably have at least one metal layer.

Component E in inks for ink-jet printing includes conventionally prepared materials such as anti-foaming agents, modifiers, wetting agents, surfactants, flow agents, dryers, catalysts, (light) stabilizers, preservatives, biocides, surfactants, organic polymers for viscosity adjustment, buffer systems, etc. As setting agents customary setting salts come into question. An example of this is sodium lactate. As biocides, all commercially available preservatives which are used for inks come into question. Examples are Proxel®GXL and Parmetol® A26. Suitable surfactants are all commercially available surfactants which are used for inks. Preferred are amphoteric or nonionic surfactants. Of course, it is also possible to use special anionic or cationic surfactants which do not alter the properties of the dye. Examples of suitable surfactants are betaines, ethoxylated diols, etc. Examples are the product series Surfynol® and Tergitol®. The amount of surfactants is particularly selected in an application for ink jet printing, for example, with the proviso that the surface tension of the ink in the range of 10 to 60 mN / m, preferably 20 to 45 mN / m, measured at 25 ⁰ C. A buffer system can be set up which stabilizes the pH in the range from 2.5 to 8.5, in particular in the range from 5 to 8. Suitable buffer systems are lithium acetate, borate buffer, triethanolamine or acetic acid / sodium acetate. A buffer system will be considered in particular in the case of a substantially aqueous component B. To adjust the viscosity of the ink (possibly water-soluble) polymers can be provided. Here all suitable for conventional ink formulations polymers come into question. Examples are water-soluble starch, in particular with an average molecular weight of 3,000 to 7,000, polyvinylpyrrolidone, in particular with an average molecular weight of 25,000 to 250,000, polyvinyl alcohol, in particular with an average molecular weight of 10,000 to 20,000, xanthan gum, carboxymethylcellulose, ethylene oxide / propylene oxide Block copolymer, especially having an average molecular weight of 1,000 to 8,000. An example of the latter block copolymer is the product series Pluronic®. The proportion of biocide, based on the total amount of ink, may be in the range of 0 to 0.5% by weight, preferably 0.1 to 0.3% by weight. The proportion of surfactant, based on the total amount of ink, can range from 0 to 0.2 wt .-%. The proportion of adjusting agents, based on the total amount of ink, 0 to 1 wt .-%, preferably 0.1 to 0.5 wt .-%, amount. The auxiliaries also include other components, such as, for example, acetic acid, formic acid or n-methyl-pyrrolidone or other polymers from the dye solution or paste used. With regard to substances which are suitable as component E, reference is additionally made, for example, to Ullmann's Encyclopedia of Chemical Industry, Electronic Release 2007, Wiley Verlag, chapter "Paints and Coatings", section "Paint Additives".

The described formulation may be used identically or similarly as a printing ink for printing methods other than ink jet printing.

The use of the preparation in connection with substrate layers which are produced on the basis of polycarbonate offers the advantage that the lamination results in a monolithic document body in which the ink or printing ink is completely homogeneously integrated in a materially cohesive manner. Even large printed areas are therefore not Risk of possible unwanted delamination, as is often the case with many other inks.

One embodiment provides that the at least two screens are printed by means of an ink comprising nanoscale TiO ₂ pigments and / or nanoscale metallic pigments, in particular based on nickel or silver.

The features of the security document according to the invention have the same advantages as the corresponding features of the method according to the invention. The invention will be explained in more detail with reference to preferred embodiments with reference to a drawing. Hereby show:

1 shows a schematic structure of a security document with a

Lenticular lens arrangement as a viewing restriction arrangement;

Fig. 2 is a schematic representation of a layer structure of a

Security document having a raster-containing gaze restriction arrangement;

3a-3c are schematic representations of matched grids and a first information;

FIG. 3d shows a schematic sectional view for illustrating the different viewing directions; FIG.

Fig. 3e is a schematic oblique central plan view of the grid spaced apart from each other and the first information;

Fig. 3f is a schematic view obliquely from the left to the stacked spaced apart grid and the first information;

Fig. 3g is a schematic view obliquely from the right on the superimposed spaced apart grid and the first information; 4a-4c show a further embodiment of two matched grids and a first information adapted thereto;

Figures 5a-5c show another embodiment of matched grids and first information; and

6a-6f are schematic representations of adapted grids and a first information and resulting different views under different viewing directions on a security document produced therefrom.

FIG. 1 schematically shows a section through a security document 1. This is made of a plurality of substrate layers 2-9, which are preferably all made of a plastic material, particularly preferably made of the same plastic material. As a particularly suitable plastic material, polycarbonate has been found. In the following, the production of a security document will be explained briefly with reference to the schematic illustration according to FIG.

A rear side 10 of the security document 1 to be produced faces a 50 μm thick substrate layer, which is transparent. The back side 10 of the security document 1 facing away from the substrate layer surface 11 of the bottom substrate layer 2 is preferably at least partially printed. About the substrate layer 2, a 100 micron thick also transparent substrate layer 3 is arranged, which may also be partially printed on a substrate layer surface. Over the two lowest printed layers 2 and 3, a further 50 micron thick substrate layer 4 is layered, which is transparent. In some embodiments, the substrate layer identified by the reference numeral 4 is provided with additives having an increased absorption in a certain wavelength range, for example 1064 nm, and which locally support blackening in this substrate layer upon irradiation with a focused laser. In other embodiments, no laser absorption promoting additives are provided. Next, an opaque substrate layer having a thickness of 385 μm is layered over the substrate layers. The substrate layer stack is followed by two transparent substrate layers 6, 7 with a thickness of 50 μm or 100 μm. Below an upper protective layer 9, which has a thickness of 50 microns and is also formed laser-sensitive, is an opaque Substrate layer 8 is arranged with a thickness of 100 microns. This is printed on one of the front side 12 of the security document 1 facing substrate layer surface 13. A resulting computational document thickness 14 of 885 microns exceeds a document thickness that results after lamination in a hot-cold press of the individual layers 2-9 into a document body. After lamination, the document thickness 14 is about 760 μm +/- 80 μm. The document body of the security document 1 may be formed as a monolithic document body if all the substrate layers 2-9 are made of the same plastic material which forms a cohesive connection between adjoining substrate layers during lamination.

During the lamination, lenticular lenses 15 with a lens diameter of approximately 150 μm are impressed into the substrate layers 2 and 3 via a stamping sheet on the rear side 10. These lenticular lenses 15 form a viewing angle-dependent viewing restriction arrangement 22. Adapted to a resultant focal length of the embossed lenticular lenses 15, a first, preferably personalizing information 27, in one embodiment, is preferably multicolored in another on an upper substrate layer surface 16 or lower substrate layer surface 17 by inkjet printing Embodiment by means of a transparent, provided with laser-sensitive pigments ink or ink, printed. The first information 27 is printed on the lenticular lenses 15 in such a way that at different viewing angles of the rear side 10 of the security document 1 in the finished state different portions of the first information are visible. If laser-sensitive pigments are used to print the first information 27, then the substrate layer, which is identified by the reference numeral 4, preferably does not receive any laser-sensitive pigments.

In particular, if the first information 27 is printed transparently with laser-sensitive pigments, a discoloration can be effected via a laser. This does not necessarily have to be radiated through the lenticular lenses 15.

If the first information 27 is not printed on an individualized basis, but in the form of a uniform geometric surface, storage of an angle-dependent personalizing information can subsequently take place via a targeted irradiation of laser light through the lenticular lenses 15. The first information 27 may also include both colorants and laser-sensitive pigments.

If the first information 27 is applied by personalization using a printing ink comprising laser-sensitive pigments, then discoloration can be effected simply by scanning the area to which the first information 27 has been applied over the surface. Surface scanning through the lenticular lenses 15 may be accomplished on a completed security document 1 with an expanded laser beam by pivoting the security document 1 relative to the laser beam in addition to a lateral scan. A flat scanning can be performed with simpler means than the classic laser Personalisieren, since no filigree laser positioning, which leaves the contour of the information, must be present.

It goes without saying that other areas of the upper substrate layer surface 16 or a lower substrate layer surface 17 can also be printed by means of inkjet printing with laser-sensitive pigments, over which no lenticular lenses 15 are arranged. This imprint can also be personalized, so that a discoloration can take place via a flat scanning. If the other areas are printed on a flat surface, a laser personalization can be carried out, as is known from the prior art.

The application of the laser-sensitive pigments in a personalizing or individualizing form, for example in which alphanumeric characters are printed with these pigments, offers the advantage that adulteration is made more difficult. While in a two-dimensional area with laser-sensitive pigments a number "6" can subsequently be supplemented to an "8", this is not possible if the laser-sensitive pigment is printed only in the area of "6." The area to be discolored includes then no pigments, so that a falsification difficult, if not impossible.

The individual illustrated substrate layer thicknesses are to be considered as exemplary only. Preferred substrate layer thicknesses for printed substrate layers are between 20 μm and 250 μm, preferably between 50 μm and 150 μm. Only an adaptation of the bottom three layers 2-4 with respect to their substrate layer thicknesses and Taking into account the refractive indices of the substrate layers 2-4, a radius of the formed lenticular lenses 15 must be such that the printed first information 27 or corresponding portions thereof after a completion of the security document by the lenticular lenses 15 are to be considered well.

It goes without saying for the person skilled in the art that any additional security features can additionally be incorporated and introduced into the security document. These may include, for example, insertion of a microchip, insertion of a holographic structure, laser personalization, other security printing, and so on. Further, it will be understood by those skilled in the art that the security documents may be made in multiple uses. This means that individualizing and / or personalizing information from several security documents is applied to the individual substrate layers. Only after a lamination of the substrate layers to the, preferably monolithic, layer composite are the individual document bodies produced by singulation.

FIG. 2 shows a further schematic structure of a security document 1. The same technical features are provided in all figures with the same reference numerals. The security document is also made of multiple substrate layers 2-9. The individual substrate layers 2-9 may have identical or different substrate layer thicknesses. The individual substrate layers are preferably made of the same plastic material, particularly preferably all of a polycarbonate material. Individual substrate layers may be opaque. However, embodiments are preferred in which the individual substrate layers are all transparent in the visible wavelength range. In the embodiment illustrated in FIG. 2, a gaze restriction arrangement is implemented by means of two matched grids printed on an upper substrate layer surface 18 of the inner substrate layer 8 and a lower substrate layer surface 19 of the same inner substrate layer 8. The print is preferably opaque in white or black opaque color. Also adapted to the two screens printed on the substrate layer surfaces 18 and 19, a first information is printed by printing on a substrate layer surface of one of the substrate layers 2-7 in a substrate layer stack 20, which in collecting the individual substrate layers 2-9 before a Joining is formed, is arranged below the layer. Preferably, the first information is printed on a Substrate layer surface of one of the substrate layers 2-7 formed in the document body, which is formed in connecting the substrate layers 2-9 along a lamination direction 21 of the substrate layers 2-9 of the substrate layer surfaces 18, 19, on which the grid 25, 26 are printed , Is arranged at a distance. That is, the first information 27 is viewed from the front side 12 of the security document below the gaze restriction assembly 22. The gaze restriction assembly 22 includes the mating raster printed spaced-apart along the laminating direction 21. The first information 27 is thus preferably printed by printing on a lower surface 23 of the substrate layer 7 or an upper surface 24 of the underlying substrate layer 6 printed. When printing the at least two screens 25, 26 on the substrate layer surfaces 18, 19 and the first information 27, personalizing information is stored in the security document 1. This can be done, for example, by the fact that the first information 27 comprises individualizing and / or personalizing information.

In any event, at least the component of the trained security feature comprising the personalizing information is printed by a digital printing method. In the following, an ink-jet printing process is used by way of example as a digital printing process.

If the first information comprises the individualizing and / or personalizing information, then this information is printed by means of an inkjet printing process. Preferably, the first information is colored and printed in such a way that the color impressions caused by a viewer exceed the number of used printing inks or printing inks. This is realized in that in the human observer by a screening of the printed image, the areas causing a certain color impression are printed by different primary colors, the then a subtractive color mixing (body colors) or additive color mixing (in luminescent colors, self-illuminants) in the viewer cause mixed color impression.

It is also possible, alternatively or additionally, to print at least one of the screens 25, 26 on the substrate layer surfaces 18, 19 by means of an ink-jet printing process using opaque printing inks. Will one of the two grids be 25, 26 or both Grid 25, 26 produced by means of an ink-jet printing process and encoded in them a personalizing and / or individualizing information, the first information 27 can be prepared with a non-digital printing method or introduced by laser engraving in a corresponding substrate layer.

The storage of an individualizing and / or personalizing information in one of the grids will be explained in more detail below in connection with FIG.

Advantageously, the components of the gaze restriction assembly 22 and the first information are applied to substrate layer surfaces which are internal substrate layer surfaces in the substrate layer stack 21 or internal layers of the document body formed thereof, for example, by lamination in a hot-cold press. As a result, a manipulation of individual elements is made much more difficult.

In addition to the viewing restriction arrangement 22 and the first information 27 printed on the inside thereof, any other security features can be incorporated and integrated into the security document 1.

In order to form a viewing restriction arrangement comprising at least two screens, it is necessary to print or arrange the adapted screens with register accuracy. Therefore, it is preferable to print the screens as possible on opposite substrate layer surfaces of one of the inner substrate layers. However, this is not mandatory. Likewise, it is possible to print the at least two rasters on respective upper substrate layer surfaces of mutually adjacent or stacked substrate layers and to align the substrate layers during registration in register with each other. If the individual substrate layers are provided, for example, as sheets and printed, then a three-point system is well-known to those skilled in the art to align the individual substrate layers in the substrate layer stack prior to bonding the substrate layers. However, it is also possible that individual or all substrate layers are provided as rolls. Alignment of the substrate layers may be performed, for example, by means of printed optical markers and sensors that detect them. Regardless of how the individual substrate layers are provided, it is imprinted opposing substrate layer surfaces of one and the same substrate layer, it is possible to provide a printing arrangement, in particular an inkjet printing arrangement, which has mutually aligned printing devices, for example inkjet printheads. Likewise, it is possible first to print a substrate layer surface with a grid and to detect the printed pattern opto-electronically and, adapted to this, to print the adapted second grid on the opposite substrate layer surface.

An embodiment of a viewing angle-dependent security feature will be described by way of example with reference to FIGS. 3a-3g, in which the individualizing information is coded in the first information item applied by printing. 3a shows a first raster 25, FIG. 3b shows an adapted second raster 26 and FIG. 3c the first information 27 adapted to the two rasters 25, 26. The first information 27 comprises personalizing information, here for example a name, a gender and a date of birth of a person. Further, the lines in which information is entered are provided with line numbers 32 in this embodiment. However, the personalizing information may also include, for example, a facial image or other individualizing and / or personalizing information. The first information 27 is preferably multicolored or colorful.

The first grid 25 comprises narrow strips 28 of a first width a and wide spaces 29 which are twice as wide and thus have a width of 2 a. The adapted second grid 26 comprises wide strips 30 having a width 2-a and narrow spaces 31 having a width a. The first grid 25 and the second grid 26 are adapted to one another such that the narrow strips 28 correspond to the narrow spaces 31 and the wide spaces 29 correspond to the wide strips 30.

To form the gaze assembly, first grid 25 and second grid 26 are printed on different substrate layer surfaces spaced from each other in a substrate layer stack. Preferably, the first grid 25 and the second grid 26 are printed in registration on opposite substrate layer surfaces of one and the same substrate layer. It will be apparent to those skilled in the art that when pressure is applied to an underside of a substrate layer, the Print template, here the grid must be printed in mirror image. This is always presupposed elsewhere in this description. Also spaced and located in the security document or in the document body further inside, the first information is introduced.

In Fig. 3d, the arrangement of the first grid 25, the second grid 26 and the first information 27 is shown schematically in a sectional view. Underneath, the line numbers 32 of the first information are additionally reproduced for the purpose of illustration in order to be able to reconstruct an arrangement of the personalizing information along an X direction 33. In FIG. 3 d, three different viewing directions perpendicular to the security document 35 are also shown at a 45 ° angle from the left 36 and at a 45 ° angle from the right 37. It can be seen that in the illustrated embodiment, the first grid 25 is equidistant from the second grid 26 as the second grid 26 from the first information 27. This is not absolutely necessary and by the substrate layer thicknesses of the substrate layers or a number of used Substrate layers determined. However, the distance of the first raster 25 from the second raster 26 as well as the distance of the second raster 26 from the first information 27 must be coordinated with the design of the raster and the first information in order to achieve a selective selective perception of individual portions of the first information among different Viewing directions 35-37.

In FIGS. 3e-3g, views are respectively presented which offer themselves to a viewer when viewing the security document under the corresponding viewing directions 35-37. In order to facilitate illustration and explanation, the first grid 25, the second grid 26 and the first information 27 are each shifted along a Y-direction 38 by a predetermined distance c from each other. This shift does not exist in the real security document.

In FIG. 3e, the viewing is shown under the viewing direction 35, ie perpendicular to the security document 1. The personalizing information is completely covered by the first grid 25 and the second grid 26. If one looks at the security document at a 45 ° angle obliquely from the left, one obtains a view which is shown in Fig. 3f. Of the personalizing information, lines 1, 4 and 7 are visible. On the other hand, consider the security document below a 45 ° angle obliquely from the right, as indicated in Fig. 3d by the viewing direction 37, one obtains the view shown in Fig. 3g, and there are the lines 2, 5 and 8 of personalizing information to detect. It will be understood by those skilled in the art that the visual indications given herein are merely exemplary. In reality, since the widths of the interstices 29, 31 are of the order of the substrate layer thicknesses, in reality only single pixel rows or multiple pixel realms would be visible in a portion of the first information released for viewing, assuming realistic substrate layer thicknesses of 50 μm to 250 μm. A readable letter would thus be realistically split into strip-shaped sections over a plurality of shared strip-shaped parts. For this purpose, the portions visible in different directions of view are interleaved in the first information.

In FIGS. 4a-4c, a first raster 25 (FIG. 4a), a second raster 26 (FIG. 4b) and a first information 27 (FIG. 4c) are shown schematically. The rasters 25, 26 and the first information 27 are again matched to one another such that, in the case of a vertical plan view, no portions of the individualizing information that are symbolized in the first information 27 by the letters A, B C and D are recognizable. When viewed obliquely from the right, the portions of the individualizing first information 27, which are marked with A, while viewed obliquely from the left, on the other hand, are the portions which are marked B. When viewed obliquely from above, the proportions C and, when viewed obliquely from below, the portions D of the individualizing first information 27 can be seen. The individual components A to D can have different colors, so that different color impressions are obtained under the different viewing angles. The different viewing directions can also be obtained by a corresponding tilting of a security document.

FIGS. 5a-5c show further embodiments of matched grids 25, 26 and a first information 27, which in this case comprises a pictorial representation. In this embodiment, not all portions of the first information are hidden even when viewed from above. This embodiment is intended only to indicate that the grid 25, 26 may be adapted to each other adapted in a variety of ways. The individualizing information here comprises a schematic facial image. In Fig. 6a-6e an embodiment is shown, in which the individualizing and / or personalizing information is additionally coded in the viewing restriction arrangement, ie in the matched grids. Figures 6a and 6b show a first grid 25 and a second grid 26. The first grid 25 comprises narrow opaque strips 28 of width a and narrow spaces 31 having the same width a. The second grid 26 is almost completely opaque and comprises individual squares 40, which together symbolize a house. This house as a symbol is here assumed as individualizing and / or personalizing information. It will be understood by those skilled in the art that any other individualizing and / or personalizing information may be appropriately encoded in a suitable manner. For example, the individual pixels 41 could be of different sizes and, for example, a barcode could be encoded thereon.

In Fig. 6c, the adjusted first information is shown, which also includes individualizing and / or personalizing information in areas A, B and C. At least the second grid 26 and the first information 27 are printed in this embodiment by means of an ink-jet printing process on different substrate layer surfaces, which are spaced apart in the substrate layer stack along the direction of stacking. Also, the first grid 25 is applied by printing on a substrate layer surface, which is arranged in the substrate layer stack above the substrate layer surface, on which the second grid 26 is printed.

In FIGS. 6d to 6f, a view obliquely from the left (FIG. 6d), in plan view (FIG. 6e) and obliquely from the right (FIG. 6f) are shown schematically. While no individualizing and / or personalizing information can be recognized in plan view (FIG. 6e), the regions B and C can be seen obliquely from the left (FIG. 6d) in a plan view. In a plan view obliquely from the right (Fig. 6f), however, the areas A and C can be seen. In addition, the sterilized house can be recognized as personalizing and / or individualizing information in FIGS. 6d and 6f.

It will be apparent to those skilled in the art that in the embodiment of FIG. 6 in which the grid comprises individualizing and / or personalizing information, the first Information can also be configured without individualizing and / or personalizing information and can be produced in such a case by means of another printing method.

The described embodiments, in which the gaze restriction arrangement is produced by means of printed rasters, each have two rasters. However, embodiments are also conceivable in which only one grid is used, which is individualized and / or personalized or not. Examples of these are the grids 26 shown in FIGS. 4b and 6b, which can each be integrated into a security document at a distance from the adapted first information according to FIG. 4c or 6c in order to form a viewing angle-dependent individualized and / or personalized security feature.

All described embodiments have in common that the

View restriction arrangement and the first information, d. h., the viewing angle-dependent individualized and / or personalized security feature formed therefrom may extend over the entire area or part or more of the area of the security document.

Preferably, at least the elements comprising the individualizing and / or personalizing information are printed on polycarbonate substrate views by an ink jet printing process.

The following are examples of a preparation of a polycarbonate derivative useful for this purpose, a preparation of a liquid preparation suitable for the production of an ink-jet printing ink, and the preparation of a first suitably usable ink-jet printing ink.

Example 1: Preparation of a suitably usable polycarbonate derivative

149.0 g (0.65 mol) of bisphenol A (2,2-bis- (4-hydroxyphenyl) -propane, 107.9 g (0.35 mol) of 1,1-bis- (4-hydroxyphenyl) -3 , 3,5-thmethylcyclohexane, 336.6 g (6 mol) of KOH and 2700 g of water are dissolved in an inert gas atmosphere with stirring, then a solution of 1.88 g of phenol in 2500 ml of methylene chloride is added stirred solution were introduced at pH 13 to 14 and 21 to 25 ° C 198 g (2 mol) of phosgene 1 ml of ethylpiperidine was added and stirred for 45 min. The bisphenolate-free aqueous phase is separated off, the organic phase, after acidification with phosphoric acid, washed neutral with water and freed from the solvent.

The polycarbonate derivative showed a relative solution viscosity of 1.263. The glass transition temperature was determined to be 183 ^° C. (DSC).

Example 2: Preparation of a liquid preparation suitable for the production of an ink jet ink

A liquid preparation was prepared from 17.5 parts by weight of the polycarbonate derivative of Example 1 and 82.5 parts by weight of a sol. Mixture prepared according to Table I.

Table I

There was obtained a colorless, highly viscous solution having a solution viscosity at room temperature of 800mPas.

Example 3: Preparation of a First Appropriately Usable Inkjet Ink

In a 50 ml wide-mouth threaded glass 10 g of polycarbonate solution from Example 2 and 32.5 g of the solvent mixture from Example 2 were homogenized using a magnetic stirrer (4% PC solution). There was obtained a colorless, low-viscosity solution having a solution viscosity at 20 ⁰ C of 5.02 mPa.s.

The polycarbonate solution obtained was additionally admixed with about 2% of Pigment Black 28. The result is an ink by means of which black and white images can be printed on polycarbonate films. By an equivalent addition of others Pigments or dyes can be prepared according to monochrome and / or colored inks.

A change in the resolution of a dot-printed pattern printed with the ink almost does not occur in the joining operation in which the pattern-printed substrate layer is bonded to a substrate layer disposed thereabove. This means that the pattern will remain in almost the same resolution even after lamination.

An optical examination of the composite revealed otherwise no detectable phase boundary. The composite proved to be a monolithic block, which also resists delamination.

The described embodiments are merely exemplary embodiments. The individual described features of the different embodiments can be combined in various ways with each other to carry out the invention.

LIST OF REFERENCE NUMBERS

I Security Document 2-9 Substrate layers 10 Rear side

I 1 substrate layer surface

12 front side

13 substrate layer surface

14 document strength

15 lenticular lenses

16 upper substrate layer surface

17 lower substrate layer surface

18 upper substrate layer surface

19 lower substrate layer surface

20 substrate layer stack

21 layering direction

22 View restriction arrangement

23 lower substrate layer surface

24 upper substrate layer surface

25 first grid

26 second grid

27 first information

28 narrow stripes

29 wide spaces

30 wide stripes

31 narrow spaces

32 line numbers

33 X direction 35-37 View directions 38 Y direction

40 pixels

A-D Shares of individualizing and / or personalizing information a distance c distance

Claims

claims

A method of manufacturing a security document (1) having a document body made of a plurality of substrate layers (2-9), comprising the steps of: providing the plurality of substrate layers (2-9),

Insertion or application of first information (27) in or on at least one of

Substrate layers (2-9),

Forming a viewing angle dependent view restriction arrangement

(22), which in the document body under at least two different

Viewing angles releases different portions (A-D) of the first information (27) for viewing,

Connecting the substrate layers (2-9) to the document body, in particular by means of a lamination in a heating-cooling press, characterized in that the first information (27) and / or the viewing restriction arrangement (22) at least partially by means of a digital printing method on at least a

Substrate layer surface (16-19) of the substrate layers (2-9) are printed and in this case a personalizing and / or individualizing information in the

Security document (1) is stored.

2. The method according to claim 1, characterized in that the digital printing method is an ink-jet printing method.

3. The method of claim 1 or 2, characterized in that the first information (27) includes the personalizing and / or individualizing information and is printed by a digital printing method.

4. The method according to any one of the preceding claims, characterized in that first information is printed in color or colorful.

5. The method according to any one of the preceding claims, characterized in that as the substrate layer (2-9) or the substrate layers (2-9) on which by means of the digital printing process the personalizing and / or individualizing information is printed, one or more plastic layer to be provided.

A method according to any one of the preceding claims, characterized in that in forming the gaze restriction assembly (22) at least one grid having opaque areas and free spaces or spaces therebetween is applied to a substrate layer surface spaced above the first information in the first arranged document body is arranged.

7. The method according to any one of the preceding claims, characterized in that when forming the gaze restriction arrangement (22) on at least two different substrate layer surfaces (18, 19) matched opaque grid (25, 26) are applied, and the plurality of substrate layers (2-9 ) are assembled prior to joining such that the rasters (25, 26) in the document body are spaced apart from one another by at least one substrate layer thickness of one of the substrate layers (2-9) and above the at least one substrate layer (2) provided with the first information (2). 9) are disposed and at least two different viewing angles relative to a surface normal of an upper surface of the document body releases different portions of the first information (27) for viewing.

8. The method according to any one of the preceding claims, characterized in that at least one of the grid (25, 26) is printed by means of a digital printing method.

9. Method according to one of the preceding claims, characterized in that the substrate layers (2-9) are gathered so that at least a portion of the first information along (or opposite) a lamination direction (21) of the substrate layers a non-zero distance to the Having grids (25, 26) in the document body.

10. The method according to any one of the preceding claims, characterized in that the substrate layers (2-9) are collected so that the grid (25, 26) and / or the first information (27) each on one in a substrate layer stack (20) , from which by lamination the document body is prepared, inner substrate layer surface (16-19) are arranged.

A method according to any one of the preceding claims, characterized in that said first information (27) is disposed so as to be located in a portion of the document body which, when viewed from the top surface of the document body at a viewing angle of 0 ° with respect to the document body Surface normal of the upper surface by the at least two rasters to more than 50%, preferably more than 70%, preferably more than 90% and most preferably completely hidden.

12. The method according to any one of the preceding claims, characterized in that the personalizing and / or individualizing information in both the first information (27) and in at least one of the grid (25, 26) is encoded.

13. The method according to any one of the preceding claims, characterized in that the personalizing and / or individualizing information in at least one of the grid (25, 26) is stored in such a way that the arrangement and / or configuration of the under one of the at least two viewing angles shared portions of the first information (27) represents the personalizing and / or individualizing information.

14. The method according to any one of the preceding claims, characterized in that the at least two rasters are printed by means of an ink or ink comprising nanoscale TiO ₂ pigments and / or nanoscale metallic pigments, in particular based on nickel or silver.

15. The method according to any one of claims 1 to 5, characterized in that as a viewing restriction arrangement (22) lenticular lenses (15) are embossed into one or more substrate layers (2-9) or are.

16. The method according to claim 15, characterized in that the first information (27) in a focal plane of the lenticular lenses (15), preferably personalized.

17. The method according to claim 15 or 16, characterized in that the first information (27) is printed by means of a printing ink or ink comprising laser-sensitive pigments.

18. The method according to claim 17, characterized in that the first information (27) by means of a laser at least partially, preferably by means of a flat scanning of the area on which the first information (27) is printed, is discolored.

A security document (1) comprising a document body made of a plurality of substrate layers (2-9) connected to each other, in which first information is applied or applied in or on at least one of the substrate layers (2-9), and above the at least one of the substrate layers (2-9) a viewing restriction arrangement (22) is formed which releases different portions (AD) of the first information (27) for viewing under at least two different viewing angles, characterized in that the first information (27 ) and / or the viewing restriction arrangement (22) are printed at least partially by means of a digital printing method on at least one substrate layer surface (16-19) of the substrate layers (2-9) and in this case a personalizing and / or individualizing information is stored in the security document (1) ,

20. Security document (1) according to claim 19, characterized in that is characterized in that the digital printing method is an ink-jet printing method.

21. Security document (1) according to claim 19 or 20, characterized in that the first information (27) comprises the personalizing and / or individualizing information and is printed by means of the digital printing method.

22. Security document (1) according to one of claims 19 to 21, characterized in that the first information (27) is printed in color or in color.

23. Security document (1) according to one of claims 19 to 22, characterized in that the substrate layer (2-9) or the substrate layers (2-9) on which the personalizing and / or individualizing information is printed by means of the digital printing method, one or more plastic layers are.

A security document (1) according to any one of claims 19 to 23, characterized in that the gaze restriction assembly (22) has at least one grid having opaque areas and free spaces or spaces therebetween applied to a substrate layer surface spaced above the first one Information is arranged in the produced document body.

25. Security document (1) according to one of claims 19 to 24, characterized in that the gaze restriction arrangement (22) comprises at least two matched to different substrate layer surfaces (16-19) applied opaque grid (25, 26) in the document body at least spaced apart from each other and above the substrate layer (2-9) provided with the first information (27), and disposed relative to each other so as to be at least two different viewing angles relative to a surface normal an upper surface of the document body different proportions (AD) of the first information (27) are released for viewing.

26. Security document (1) according to one of claims 19 to 25, characterized in that at least one of the screens (25, 26) is printed by means of a digital printing method.

27. A security document (1) according to any one of claims 19 to 26, characterized in that the substrate layers (2-9) are arranged so that at least a portion of the first information (27) along (or opposite) a lamination direction (21) of Substrate layers (2-9) has a non-zero distance to the grids (25, 26) in the document body.

28. A security document (1) according to any one of claims 19 to 27, characterized in that the grid (25, 26) and / or the first information (27) are disposed in the document body inside, spaced from an outer surface.

A security document (1) according to any one of claims 19 to 28, characterized in that the first information (27) is located in a portion of the document body which, when viewed from the top surface of the document body, is viewed at a viewing angle of 0 ° with respect to the surface normal the upper surface is at least two rasters (25, 26) more than 50%, preferably more than 70%, preferably more than 90% and most preferably completely hidden.

30. Security document (1) according to any one of claims 19 to 29, characterized in that the personalizing and / or individualizing information in both the first information (27) and in at least one of the grid (25, 26) is encoded.

31. Security document (1) according to one of claims 19 to 30, characterized in that the personalizing and / or individualizing information is stored in at least one of the grids (25) in such a way that the arrangement and / or configuration of the under one of at least two viewing angles released portions (AD) of the first information (27) represents the personalizing and / or individualizing information.

32. Security document (1) according to one of claims 19 to 31, characterized in that at least one of the screens is printed by means of an ink or printing ink, the nanoscale TiO ₂ pigments and / or nanoscale metallic pigments, in particular based on nickel or silver, includes.

33. Security document (1) according to one of claims 19 to 23, characterized in that the viewing restriction arrangement (22) lenticular lenses (15) which are embossed in one or more substrate layers (2-9).

34. Security document (1) according to claim 33, characterized in that the first information (27) in a focal plane of the lenticular lenses (15), preferably personalized.

35. Security document (1) according to claim 33 or 34, characterized in that the first information (27) is printed by means of a printing ink or ink comprising laser-sensitive pigments.

36. Security document (1) according to claim 35, characterized in that the first information is at least partially discolored by means of a laser, preferably by means of a flat scanning of the area on which the first information (27) is printed.