Protective element

FIELD: protective elements.

SUBSTANCE: protective element has base, onto which first cover of magnetic material forming first code is applied and second cover of electro-conductive material forming second code, and also provided with third, optically readable code, which are least at local portions is formed by third cover of non-magnetic and non electro-conductive material, which cover separate portions of protective element not covered by first and/or second cover. All three of aforementioned covers indistinguishable from one another by the unaided eye. Proposed invention also concerns document, banknote, protected from forgery, and also method for manufacturing protective element.

EFFECT: creation of protective element, all protective signs of which can not be seen without special equipment and which can be simple and inexpensive to make, and also allows highly reliable authenticity check.

5 cl, 6 dwg

 

The present invention relates to a protective element, primarily for the protection of banknotes against counterfeiting, which has a base and provided with a magnetic code and/or independent from the code, having electrically conductive properties and are called lower conductive code, and includes an optical code. The invention relates further to tamper with the document, first of all bill, equipped with such a protective element. Under such a protective element means primarily the security thread. Security threads are widely used as security features to protect against forgery wide range of products, primarily in counterfeit securities. One of the most well-known applications such protective threads that have particularly high requirements for the degree of protection against forgery, is their use in issuing paper for printing banknotes in embedded in it, for that existing protective filament optical code in most cases is made positive or negative by the font of the label, the presence of which can be checked for clearance with the naked eye. However, such optical code may also or additionally be a code that allows its validation using optical equipment, primarily to represent trich code (WO 99/28852).

Usually security thread with the purpose to complicate it a forgery in addition to optical supply code and other protective signs, first electrically conductive coating and/or coated with magnetic properties, which are (cover) come one on top of another. The presence of such protective elements is controlled by means of automatic verification, and therefore they are called also "mashinosteroyenie signs". Usually optical code formed by these mashinosteroyenie signs by adding the appropriate coatings species is made positive by the font of the label or by abandonment in these coatings whitespace sections forming is made reversible font lettering. One of the traditional technologies of creation of optical code is a partial demetallization metallized yarn, staying on top of the metallic coating and having a magnetic layer or removed in the process demetallization with this metallic coating (EP 0748896 A1), or have it so that he did not interferencial with detalizirovannymi areas, or put such a small thickness that demetallation areas of security threads despite the presence on them of such a magnetic layer were visually distinguishable on the ground EP 0498186 A1).

Instead of applying an electrically conductive layer, n is the dusting metal security thread conductive coating can also be applied to it as ink, containing a metallic pigment such as aluminum powder (EP 0516790 B1, Fig). In another embodiment, a magnetic layer, optionally, to give a conductive properties due to contact to the material of the soot particles, which allows printing of a single layer at the same time to get all three protective trait - magnetic, electrically conductive and is made reversible by the font of the label.

In accordance with another known method having a magnetic layer has been proposed to apply such a way that it formed a special code (ER 0914970 A2). For applying such a magnetic code can be used magnetic material or a material which can be detected by the magnetic resistors (EP 0610917 A1), with similar code can be used to detect not only based on the characteristics of the local distribution forming its material, but also on the basis of differences either in the magnetoresistive properties (EP 0610917 A1), or in the thickness of the magnetic layer (EP 0914970 A2), or in magnetic properties such as residual magnetic flux density or coercive force (WO 99/28852).

In addition, in accordance with well known from WO 99/28852 solution along with the application of the magnetic coating in the form of a special code was also proposed to form a special conductive code application to local areas of electropo is one of the metallic coating.

When it is not necessary to perform the optical code is visible in the lumen of the magnetic coating instead of, for example, work within that space areas that form is made reversible by the font of the label, you can apply the appropriate inscription, advectively on top of this magnetic layer conventional printing inks (EP 0610917 A1, EP 0748896 A1).

When using a protective thread their machine readable signs tend to make not visible to potential counterfeiters and not attracting their attention. However, without special measures, it is impossible to avoid the problems associated with the fact that the magnetic coating usually looks completely different than having a metallic conductive metallic coating.

To solve this problem, WO 99/28852 was suggested that the magnetic layer and the electrically conductive metal layer on top of one another with their exact combination so that they are completely concealed each other. However, this measure is effective only when the security thread can always be viewed from one side, or when at least its base is made of opaque material. Protective same thread supplied banknotes and optical code which is checked for clearance, it is often the PR is transparent, and therefore, such security threads depending on which of their sides facing the person will look different. For this reason, for the manufacture of security threads, which can be seen from both sides, EP 0516790 B1 and EP 0748896 A1 was proposed to completely cover the magnetic coating on both sides of conductive material, thus embedded in the paper, the security thread looks the same and in reflected and transmitted light, regardless of its sides turned toward the man.

Another approach for masking the magnetic coating described in the application EP 0914970 A2, according to which the magnetic bar code serves to hide, providing in the intervals between the individual strokes of such a magnetic code mask strokes from the same magnetic material, which is different from actually forming a magnetic barcode touches only the layer thickness of the material and thereby the intensity of the magnetic properties. In accordance with that proposed in this application the solution is based on creating a kind of optical illusion that allows you to mislead potential falsifiers, because the mask touches the source perceived by the human eye as the magnetic elements of the code. However, this approach imposes high requirements to the quality of technology is increasing security threads and to the quality of the measuring equipment, which is used for authentication, security threads and which should provide reliable recognition masking strokes to avoid erroneous classification of the elements of the actual magnetic bar code.

Based on the foregoing, the present invention was used to develop the protective element, primarily for the protection of banknotes against counterfeiting, all security features which it would be impossible to see without special tools and which would be simple and inexpensive in manufacture, and would be able to verify its authenticity with a high degree of reliability.

This problem is solved according to the invention with its proposed protective element with distinctive features indicated in the independent claims. Preferred embodiments of the invention are given in the respective dependent claims.

The main idea proposed in the invention of the approach on masking the protective characteristics protective element is in addition to apply on the basis of the protective element of various security features, using for this purpose the materials that are optically or visually, i.e. to the naked eye, indistinguishable from one another. The basis for the protective element may be the implementation of the and of opaque or transparent material, preferably from a synthetic polymer, most preferably of transparent synthetic polymer.

More specifically proposed in the invention approach on masking the protective characteristics based on the fact that in addition to the protective characteristics, allowing their verification by technical means ("machine readable signs"), i.e. in addition to the coating of electrically conductive material and/or coating of magnetic material, to provide the protective element another floor, which has no characteristic physical properties inherent in machine readable signs, i.e. which is not conductive, and accordingly does not have special magnetic properties.

A cover of "neutral" material (i.e. material with neutral properties) at least partially covers the portions of the protective element, for which there is no machine readable signs. Because the human eye is unable to distinguish visually from each other similar looking materials with different properties, people when considering protective element sees only some visually distinct pattern, for example a barcode or a combination of characters or symbols (referred to in the following description, "optical code"). For CH is per person remains hidden the fact of the possible presence in the optical machine readable code characteristics and a possible place in it.

In the simplest case, the machine readable signs and coating of neutral material can be located separately from each other on different parts of the protective element. However, the higher the efficiency of the protective masking of symptoms is achieved in the case when such areas are adjacent to each other or, preferably, partially, or even completely overlap. In accordance with the preferred embodiment of the invention the protective element is a security thread, on each longitudinal section which provides at least one of forming the corresponding code materials and which is covered throughout its length creates the same visual or optical impression material. Optical code in such a continuous coating preferably formed space areas in the form of negative font. In this case, such a security thread is visually perceived as a traditional security thread with a solid floor, which contains the usual space areas in the form of made reversible font characters. Proposed in the invention, the protective element is simple to manufacture using to perform its various coating materials on the basis of C is affected the same visual or optical impression printing inks, to which the mixed particles to allow for automatic validation properties. In this case, forming the optical code, no cover plots protective element there is no need to perform time-consuming and difficult to implement demetallization, and they can simply be left unsealed. In accordance with this proposed invention the solution most suitable for the manufacture of transparent security threads, which are sealed in paper form is visible in the lumen. For coating with allowing automatic scan properties and coating with neutral properties it is advisable to use an opaque material, preferably a dark color and preferably based on the same printing ink that provides more contrast the allocation proposed in the invention, the protective element surrounding background when viewed against the light.

The proposed invention the protective element can additionally provide other security features, primarily thermochromic and/or luminescense protective sign.

In accordance with one of preferred embodiments of the invention the protective element is a security thread, i.e. it has the form of a wire or strip, which is at least partially sealed or adrena in material protected with it from a fake document, for example the emission of paper for printing banknotes, or located on the surface of such a document. In accordance with this proposed invention the solution is illustrated in the following description of the example protective element, which is similar to the preferred form. However, it should be noted that, in the invention, the protective element may have a contour or shape and any other shape.

Below the invention is described in more detail with reference to the accompanying drawings. While the proportions shown in these drawings, elements not necessarily correspond to the actual ratios of sizes and are used primarily for a more visual explanation of the underlying principles of the invention. Attached to the description of the drawings in particular, it is shown:

figure 1 - the protective element with a continuous electrically conductive coating, on top of which is printed magnetic code, and provided for in this conductive coating of the optical code,

figure 2 - the protective element with a magnetic coating, on top of which is printed conductive code and the optical code provided in the conductive code, and in the magnetic coating,

figure 3 - the protective element with spaced apart magnetic code, electroconductive code and the optical code

figure 4 - protective element elektroprovodnaya, which is partly covered by a magnetic code and which in conjunction with him, and the third coating forms an optical code,

figure 5 - the protective element with a magnetic code that overlaps with the optical code formed by the areas and neutral conductive coatings, and

figure 6 - with a continuous coating of the protective element with the conductive code printed on top of the magnetic source and located between both of these codes neutral surface, with the optical code in the form is made in a continuous coating reversible font lettering.

In the upper part of each figure 1-6 protective element shown in the form in plan, and in the lower part of the protective element is schematically shown in section in side view. With this view in terms of the protection element corresponds to its visually perceived by the human eye appearance, which is white or light protective element has a reflected light or a transparent protective element has in transmitted light. In the side view shows the layered structure of the corresponding protective element. The width of the protective element, when it is made in the form of a security thread, usually from 1 to 2 mm On all drawings depict only a short period of such security threads, which is usually made in the form of endless filaments.

In all the drawings, identical layers and prasouda their materials are denoted by the same positions.

Figure 1 shows entirely conductive protective element 1 with a magnetic code and made in the form of reversible font text. In other words, the protective element 1 has a continuous conductive coating 30, which contains white space areas in the form of font characters forming optical code 20. The base 10 such protective element 1 is transparent synthetic polymer, and therefore, such optical code 20, if the protective element 1 is sealed, for example, in the paper of the banknote or other material protected from a fake document, see the ray of light.

On top of the solid coating 30 printing is coated with a special magnetic code 40, which by its appearance indistinguishable to the naked eye from beneath him cover 30. Such a magnetic code 40 may represent, for example, a bar code. In the simplest case, such a magnetic code can be a continuous coating, similar to the continuous conductive coating 30, which has a protective element in this version.

Thereby not having the appropriate information, you will not be able to detect the presence of the protective element in addition to the optical code 20 and even the presence of a magnetic code 40. The term "magnetic code" in the context of the present invention is meant any "magnetic carpet", which thanks to the special magnetic properties of the material allows on the basis of such magnetic properties to authenticate provided them with a protective element. The coatings of this type include, for example, coating of a material which allows it to uniquely identify using the magnetic resistors, thereby allowing you to reliably distinguish it from other materials present in the protective element.

Shown in figure 1, the protective element has a total of three protective characteristic, which are optical code 20, the magnetic code 40 and a continuous conductive coating 30. In accordance with this protective element has a kind of "triple encoding". However, to achieve envisaged by the invention of the purpose and with the help of cover 30, a material which does not have any special physical properties and represents, for example, neutral printing ink. The most important condition that must cover 30, is that visually it must be not distinguishable from a material with magnetic properties of the dye, which is made of a magnetic code 40.

Figure 2 is similar to the one shown in figure 1, the protective element 1, a base 10 which is transparent synthetic polymer, but which is covered by a continuous layer of magnetic paint 40, over which, in turn, applied conductive ink 30 in the form of a special code. In accordance with this protective element instead of a special magnetic code is nebgen in this embodiment, a special conductive source 30 and is made entirely magnetic, and not electrically conductive. Unlike shown in figure 1 protective element optical code 20 is not only the portions of the protective element 1, on which there is a continuous magnetic coating 40, but also those areas where there is the conductive coating 30. Since such optical code 20 is made reversible by the font forming his white-space plots of the corresponding forms are present in the magnetic coating 40, and the conductive coating 30. In this embodiment, a continuous magnetic coating 40 can also be replaced with a neutral print with paint, which, however, would reduce from three to two the number of protective features, the protective element.

In preferred embodiments of the invention because they provide a higher degree of protection protective item from a fake and a special ability misleading considering such protective human element, as well as potential falsifiers there are three protective characteristic, which are optical, magnetic and electrically conductive protective characteristics and for which selects materials that are visually indistinguishable from each other and which are applied to the surface of the protective element 1 in the form of appropriate coatings suitable for this purpose method, preferably in the form of nanos is by printing printing inks. For example, methods of printing, which on the surface of the protective element can be applied appropriate coverage in the form of printing ink, can be called silkscreen, gravure, offset and flexographic printing, the preferred of which screen-printing and gravure printing. It is obvious that security features can be applied to the surface of the protective element and otherwise suitable for this purpose method, such as sputtering or plating. For coating by sputtering, it is preferable to use the methods of coating by vacuum deposition.

Figure 3 shows the following embodiment of the proposed invention in the protective element 1, In this case, the optical code 20 consists of font characters 20A and 20d, as well as from cross-strokes 20b and 20C trapezoidal shape. Each of the individual elements 20a-20d optical code 20 is formed by coating on the protective element 1 of a particular material. Thus, in particular, the element 20A in the form of letters "G&D" is formed by coating 50 of a neutral material that does not have any special physical properties. Element 20b of the optical code and the element 20d in the form of letters "PL" is formed by a magnetic coating 40. Item 20C optical code, in turn, formed conductive coating 30. In accordance with this, each with VI the font character elements 20A and 20d has distinct physical properties, as well as trapezoidal cross strokes 20b, 20C also have different physical properties, which in addition to this, in turn, differ from the physical properties with the appearance of a font character elements 20a, 20d, respectively. But man when dealing with such protective features can initially determine whether they have different physical properties, since all of the materials from which made forming optical code 20 items that are not visually distinguishable from each other by the naked eye. In this embodiment, all of the coating, similar to shown on figure 1 variant, marked on the base 10 made of synthetic resin material.

Figure 4 shows proposed in the invention, the protective element 1, the optical code 20 which is a bar code formed by strokes of different length with equal intervals between them. The human eye is similar to the original strokes are perceived as forming a traditional barcode. However, such components of the bar code 20 individual strokes are made, as seen in cross-section of the protective element 1, shown in the lower part of this drawing, made of different materials, one of which is electrically conductive and respectively form parts with conductive coating 30, the other has magnetic properties and ACC which respectively form parts with a magnetic coating 40, and the third is neutral and respectively form parts with a neutral coating 50, which do not have any magnetic or conductive properties. In accordance with this, the areas of the conductive coating 30 is formed of electrically conductive code 30, the magnetic sections 40, a magnetic code 40, and in combination with each other areas with a conductive coating 30, a magnetic coating 40 and a neutral floor 50 collectively form an optical code 20.

Thus areas with a neutral coating 50 are used for giving an optical code 20 complete, and, in principle, unlike shown in figure 4 variant would have sufficed to these areas with a neutral floor only 50 adjacent to areas with a magnetic coating 40 and/or areas with a conductive coating 30. However, the necessary condition of such individual plots differ in their properties coverings is extremely high precision manufacturing, precluding the formation of gaps between them without coverage. For this reason, to improve the manufacturability of the protective element primarily by printing areas with dissimilar in its properties the coating is preferably positioned in such a way that adjacent to other areas with dissimilar in its properties p is the floor mutually overlap. In this case, the manufacturing tolerances are not that significant. In this embodiment, all of the coating, similar to shown on figure 1 variant, marked on the base 10 made of synthetic resin material.

Figure 5 shows the following embodiment of the proposed invention in the protective element 1, the optical code 20 which is also formed of font characters 20A and strokes 20b, 20C. Strokes 20C performed within them reversible font letters "PL" formed conductive coating 30, and the bar 20b is carried out within reversible font is labeled "G&D is formed by the neutral coating 50 of opaque ink. When this conductive coating 30 forms an electrically conductive code, a special order of the elements and their form, however, is not visible to the human eye, since the area with a neutral coating 50 is visually perceived as an integral part of this code. The protective element further has a third code, namely magnetic code 40, which is formed by locally sealing strokes 20A, 20b of the magnetic paint 40. The areas occupied by the magnetic source 40, located outside made reversible font characters 20A, and therefore, such a magnetic code 40 can be in the form of a classical bar code in a simple way to apply printing on the protective e the ment. In this embodiment, all of the coating, similar to shown on figure 1 variant, marked on the base 10 made of synthetic resin material.

Figure 6 shows another embodiment of the proposed invention in the protective element 1, which is perceived by the human eye as having a continuous coating of the protective element is made of reversible type inscription 20. Such a protective element has a conductive code 30 and different magnetic code 40, which is formed by the respective surfaces 30, 40. The portions of the protective element, which covers 30, 40 are not available, pre-sealed opaque printed ink, forming a neutral floor 50. However, it should be noted that to achieve envisaged by the invention of the target sequence of the coating is not significant, since the protective element 1 in any case, their appearance will be perceived by the human eye as a fully sealed opaque printed ink element, even if its implementation is transparent will have the same appearance on both sides. In this embodiment, all of the coating, similar to shown on figure 1 variant, marked on the base 10 made of synthetic resin material.

In the case of a transparent protective element raznor the derivative on the physical properties of the coating can also be applied to its base 10 with its different sides.

The sections of the protective element, which have a magnetic coating 40 and respectively form a magnetic code can be divided into subclasses that differ in their parameters residual magnetic induction and/or coercive force. Such subdivided into different subclasses magnetic areas can be distinguished from one another based on differences in their magnetic properties when tested in the relevant identification machines. To give subdivided into subclasses magnetic zones of different magnetic properties, is detectable when the automatic control is possible through the use of different magnetic materials or by varying the number of the same material and/or parameters of its pigment distribution. Under the pigment distribution this implies, for example, the particle size of the pigment particles or the density (thickness) of their location.

As the magnetic materials in the manufacture proposed in the invention, the protective element can be used and hard magnetic and soft magnetic materials, and mixtures thereof.

As with magnetic paint can be used mixed with appropriate binders pigments based hard magnetic materials such as Fe3O4and powder coatings based on the magni is omagic materials, for example Fe or NiFe.

Areas with a conductive coating 30, as well as areas with a magnetic coating 40 receive the same method, for example by printing with use of the corresponding printing inks. The advantage associated with the application of electrically conductive and magnetic coatings by the method of printing is the simple matching of the created conductive paint visual experience with the visual impression created by the magnetic paint. In addition, this approach allows a simple way to provide for forming the optical code space areas in the conductive coating or to give them special contours without the need to use for this purpose, for example, time-consuming and complex process demetallization. For printing conductive sections can be used, for example, paint type Elektrodag company Acheson or mixed with an appropriate binder soot, for example, the product Printex HEV company Degussa Hüls.

1. The protective element (1)having a base (10), which is applied to forming the first code first floor (40) of magnetic material and forming the second code, the second surface (30) of electrically conductive material, and provided with a third optically read by the optical code (20), which at least in local areas formed the third floor (50) Samantha and electroconductive material, which covers at least individual sections of the protection element is not covered with the first and/or second floor, with all three of these coating (30, 40 and 50) are indistinguishable from one another with the naked eye.

2. The protective element according to claim 1, which is made of transparent synthetic polymer.

3. The protective element according to claim 1, which is made in the form of strands or strips.

4. The protective element according to claim 1, in which the coating (50) of non-magnetic and electroconductive material partially or completely overlaps with forming the first code cover (40) and/or forming the second code coating (30).

5. The protective element according to claim 1, in which the coating (50) of non-magnetic and electroconductive material closely adjacent to the forming the first code coverage (40) and/or forming the second code to the coating (30).

6. The protective element according to claim 1, in which all three of the coating (30, 40 and 50) are not mutually overlap.

7. The protective element according to claim 1, each longitudinal portion of which is provided with at least one of these three coatings (30, 40 and 50).

8. The protective element according to claim 1, in which the optical code (20) is made negative or positive font inscription.

9. The protective element of claim 8, which is made negative or positive font inscription is located only in those areas of the protective element, the cat who are not covered neither the first - magnetic - coating (40), nor the second - conductive - coating (30).

10. The protective element according to claim 1, in which at least one of the three coatings (30, 40, 50) are provided on both its sides.

11. The protective element according to claim 1, which forms the first code coverage (40) contains magnetic materials, which differ by the values of residual magnetic induction and/or coercive force.

12. The protective element according to claim 1, which has a thermochromic protective sign.

13. The protective element according to claim 1, which has luminescense protective sign.

14. The protective element according to claim 1, in which the materials of the aforementioned coatings (30,40 and 50) are printed ink.

15. The protective element 14, which these printing inks are opaque.

16. The protective element 14, which electrically conductive material is mixed with a binder soot.

17. The protective element 14, in which magnetic material is mixed with a binder of the magnetic pigment.

18. The protective element 14, in which the magnetic material is a powder paint based magnetic material.

19. A protective element having a base (10) and capable of automatic reading of the code formed by the first coating (30, 40) made of a material that has a special, allowing the car is aricescu verify the physical property, and other than allowing automatic code reading optically readable optical code (20), which at least in local areas formed by the second coating (50) made of a material that does not have a physical property that has a material forming the first coverage code (30, 40), while the first floor (30, 40) and second floor (50) are arranged in such a way that each of them visually distinguishable to the naked eye and in reflected and transmitted light, but indistinguishable from one another with the naked eye.

20. Protected from a fake document, with at least one protective element according to one of claims 1 to 19.

21. Banknote, provided with at least one protective element according to one of claims 1 to 19.

22. A method of manufacturing a protective element according to one of claims 1 to 19, which consists in the fact that the protective element is preferably applied by printing the said cover (30, 40 and 50).

23. The method according to item 22, in which the said coating is applied by screen printing.



 

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EFFECT: high degree of protection from forgery.

25 cl, 84 dwg

FIELD: protective element, having a composition of optically efficient structures in layered composite.

SUBSTANCE: protective element contains a layered composite for gluing onto substrate, containing form-making layer, protective layer of plastic material and reflective layer, which is positioned between form-making layer and protective layer of layered composite, while optically efficient structures of protective sign are formed in reflective layer. Protective sign has at least one surface with optical information element, on which reflective layer is made in form of mirror macro-structure with smooth profile, which in partial areas, forming relief display of information, is made curved so, that adjacent points with extreme values relatively to height of macro-structure profile are distanced for at least 0,3 millimeters. Point of macro-structure never has angle ±γ of local inclination of tangential surface to macro-structure, which angle is measured relatively to the surface of layered composite, greater than 7°. Surface with macro-structure is adapted for deflecting light, which falls in parallel manner at angle α relatively to normal onto surface of layered composite within limits of previously given angular range ε 14° around direction of mirror reflection, which includes angle (β=α) of reflection with normal line, so that element of optical information is visually visible, but can not be photo-copied.

EFFECT: high level of protection from photo-copying.

2 cl, 7 dwg

FIELD: manufacturing multi-layered films.

SUBSTANCE: film comprises base made of bi-axially oriented polypropylene film and polyolefin film. Before laminating, the polyolefin film is colored. The multi-layered film is oriented in transverse direction or longitudinal direction and transverse direction after laminating. The thickness of the multi-layered film ranges from 8 μm to 26 μm. The method of producing the multi-layered film is also presented.

EFFECT: expanded functional capabilities.

9 cl, 3 ex

FIELD: printing industry.

SUBSTANCE: proposed storage medium with half-tone image in engraving style produced by method of intaglio printing, i.e. presented by irregular linear structures, consists of repeated printable structural elements. Fine structure present within the limits of structural elements in from of spaces are partially applied to structural elements.

EFFECT: provision of complex design, high protection from counterfeit.

36 cl, 16 dwg

FIELD: printing processes to produce particular kinds of printed work.

SUBSTANCE: different color paint is applied to printing plate rolled up with paint within limits of definite pattern of mask.

EFFECT: improved quality of printing.

6 cl, 1 dwg

FIELD: methods of producing data carriers.

SUBSTANCE: method can be used for making persona; identifications in form of cards, securities etc. Method of making info carrier (1,10) provided with protective element having optically variable properties. The element has at least one distinguish marking (5, 6, 11) and at least one light-permeable layer (4) with optically variable properties. Layer having optically variable properties is at least at several parts overlapped with marking. Light-permeable layer (4) with optically variable properties is applied onto data carrier and marking (5, 6, and 11) is made through the layer onto data carrier (7) formed by means of laser radiation. Layer (4) with optically transparent properties has material, which creates optical variable effect. Moreover, the layer stays invariable under influence of laser radiation. Method provides high protection against imitation.

EFFECT: simplification; reduced cost of production.

30 cl, 4 dwg

FIELD: data carriers.

SUBSTANCE: data carrier is provided with protective element, which allows at least visual control and has at least on a portion an engraving, which is a semi-tone blind engraving, produced by metallographic printing without ink feed, and also disclosed are method for making a data carrier and printing form for making protective element by means of blind engraving.

EFFECT: higher level of protection from forgery.

3 cl, 13 dwg

FIELD: image printing technologies.

SUBSTANCE: required color is produced by mixing colors of image points, and on substrate fluorescent point of printing paints image are formed, which contain pigments fluorescent when excited by a certain electromagnetic emission, and also non-fluorescent image points of printing paints, containing colored pigments, non-fluorescent when excited by a certain electromagnetic emission. Aforementioned fluorescent image points and non-fluorescent image points are positioned on substrate in staggered order relatively to each other.

EFFECT: higher efficiency, higher quality.

2 cl, 4 ex

FIELD: printing.

SUBSTANCE: method includes use of freely mounted relatively to shape cylinder rolling cylinder, for rolling portions of composite printing form of shape cylinder, rolling cylinders being made with possible forming of portions of stripes of multicolored paints on shape cylinder.

EFFECT: higher efficiency.

3 cl, 9 dwg

FIELD: data carriers.

SUBSTANCE: data carrier 14 with forgery-protecting imprint 1 made by metallographic printing method consists of several contrasting structural elements 2,3,4,5,7,22, positioned with precise alignment to each other, while one portion of these structural elements 3,4,5,7 is made relief-type and can be sensed by touch, and other portion of structural element 2, 22 is made flat and undetectable by touch.

EFFECT: exceptionally high level of protection.

4 cl, 9 dwg

FIELD: information medium sealed up by the method of metallographic printing, method for its manufacture, as well as a printing plate suitable for the purpose and the method for its manufacture.

SUBSTANCE: the information medium, first of all a bank note, securities or a similar document, which has at least one sealed up section (13) and at least one separate section (14) practically completely encircled by this section. The mentioned section (13) and the separate section (14) are sealed up by the metallographic method, and both sections are sealed up by paint coats of a different thickness and differ from one another.

EFFECT: provided a high degree of protection against forgery of the information medium.

21 cl, 11 dwg

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