Data carrier, method for manufacturing data carrier and printing form for metallographic printing

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

 

The present invention relates to a data carrier provided with a protective element, which is obtained blind embossing method of metallographic printing, to a method of manufacturing such media and to print form for blind stamping protective element.

In the context of the present invention under the media refers protected from forgery or valuable documents, such as banknotes, identification cards, passports, banking and other forms of checks, stocks, certificates, stamps, tickets and similar documents, as well as labels, seals, packaging, or other items used as evidence of authenticity of the product and to protect it from tampering. With this in mind, under such referred to in the subsequent description of General concepts as "media information" and "protected against forgery or valuable document, always refer to the documents of the specified type.

Such securities, commercial or practical value which significantly exceeds the cost of the material from which they are made, i.e. their material value, must have certain characteristics that would identify such documents as genuine and to distinguish them from counterfeits or fakes. For this reason, these documents provide special protective ELEH the customers, forge which in the ideal case, impossible, or possible only at high cost and that it is impossible to falsify.

For use in such purposes the most well established such protective elements that you can identify and recognize as genuine without the use of tools, but the production of which at the same time is connected with high costs. This involves, for example, about watermarks that can be performed in the storage medium only when the production is used for making paper, or obtained by the method of metallographic printing images, which differ in their characteristic distinguishable by touch relief, which cannot be reproduced through Photocopying or copying-duplicating devices.

A distinctive feature of the method of gravure printing is used in, a special printed form, print, i.e. ensuring the transfer of ink to the printing medium, portions of which are made in the surface depressions. Such deepening perform the appropriate engraving tool or etching. Before actual printing process on the engraved printing plate is applied printing ink, the excess of which is removed from the surface of the printing is shaped squeegee or wiping roller, causing the ink remains only in the recesses of the printing plate. After that, usually paper, is pressed against the printing form and then separated from it, and the paint due to its adhesive remains on the substrate surface, forming therein a printed image or print. When using translucent colors thickness deposited on the base layer of paint is determined by the color tone of the print.

Methods gravure printing is divided into autodeploy gravure printing and metallographic printing. Deepening in printed form for autodeploy gravure printing is performed, for example, electron beam, laser beam or a chisel. A distinctive feature autodeploy gravure printing is that the transfer of the imprint of the different gray tones and color tones is provided with orderly arranged on the surface of the printing form cells that are performed with different densities of their placement, with different sizes and/or different depth.

Unlike color for metallographic printing use printing plates, recesses in the surface which is to receive the imprint perform as lines. In the manufacture of printing forms for metallographic printing machining typically used engraving tools with conically pointed end, and so is velichinam the depth of the engraving tool in the processed material width it generates line also increases. In addition, with increasing depth of etching is increased and filled with paint volume is engraved in the form of line grooves, and thereby increases the opacity of the printed line. In the manufacture of printing forms for metallographic printing etching whitespace areas of the printing plate is covered with a chemically inert lacquer. During the subsequent etching of material from the surface of the produced printing plate is removed to not coated with protective varnish the areas of education are filled with printing ink grooves in depth with such lines recesses depends primarily on the duration of the etching and the width of these lines.

In the process of metallographic printing the base material under high pressure (pressure) is additionally subjected to embossing, in which the reverse side of the Foundation acquires relief (embossed) structure. If in the process of metallographic printing use printing plate without applying paint, the appropriate basis is subjected to so-called blind stamping, in which the surface of the media is given the characteristic relief structure.

Thus, the method of metallographic printing and foremost method of metallographic printing with steel engravings provide features such as the NSS, easily recognizable even by the layman printed, respectively embossed image that cannot be reproduced in other common methods of printing. This is due to the fact that with sufficient depth engraved in printed form depressions in the printing method of metallographic print-based media as a result of its stamping and transfer it paints get the impression with discernible to the touch of a relief structure. For this reason, the method of metallographic printing with steel engravings preferably used for sealing those media, and especially those protected against forgery and valuable documents, such as banknotes, stocks, bonds, certificates, cheques and other similar documents, which must meet high requirements concerning the degree of protection against forgery.

From the application WO 97/48555 known method of mechanized production of printing forms, allowing the playback quality to produce printing plates for metallographic printing. To this end gather information about the dashed lines of the original and accurately determine the area occupied by each line of the surface. After this engraving tool, for example a rotating chisel or a laser beam, first engrave the outer contour of this surface is the surface with the aim to clearly limit.

Then using the same or another engraving tool with a limited way of surface area to a predetermined depth to relieve or remove the material, getting clearly engraved throughout their area in accordance with the stroke original line. Depending on the shape of the engraving tool and the parameters of its directional move bottom surface formed by removing material from the printing plate, is attached to the roughness with a certain pattern, ensures retention of the printed ink.

For blind stamping also has already been proposed to use a printed form designed for metallographic printing. In the prior art it is also known running blind stamping in the metal layer. However, all such known blind stamping are the simplest execution and are only given height, respectively the depth of the embossing. In other words, for such stamping is used printing form, having only a single-stage etching a precisely defined constant depth. While intended for stamping parts form, engraved at different depths, such as lines of different depths, always separated naprawianie areas. Produced using similar forms of stamping visually distinct t is like under completely defined, sharp angles, and therefore, such a sign of authenticity often not perceived by the human eye, which decreases the likelihood of detection of possible fakes. Apart from that, these numbers are usually not produced by human memorable experience.

The present invention was based on the objective to improve the protection of media from tampering by applying to the media more complex the structure of the protective element, which would be harder to counterfeit and which would be visually readable, and would create an unusual optical impression.

This task is solved by the distinguishing features of the independent claims. Various embodiments of the invention are given in the dependent claims.

Proposed in the invention, the information carrier has a protective element, which allows at least a visual its control and has at least in a portion of the lettering, which represents a halftone blind embossing received metallographic printing without ink.

Such halftone blind embossing is a blind embossing, embossed elements which have different heights, respectively, the embossing depth and preferably directly to the public transform into one another. Such halftone blind embossing is preferably a volumetric three-dimensional reproduction of the original, such as a sculpture or embossed patterns. In another embodiment, in the original, you can take a two-dimensional original and convert it on the basis of relevant background information, for example, depending on the audience in a two-dimensional image of the original colors, halftones, line width and other characteristic parameters in the three-dimensional original. At the next stage on the basis of such three-dimensional original intended for reproduction in the form of a stamping, creates a grayscale image, which is specially coordinated with the subsequent milling process of the printing form and the various shades of gray, which is set in accordance to the different depths of etching performed in printed form recesses.

However with those sites that embossed the image must be in the space to the maximum value, it is preferable to correlate the darkest shades of grey and thereby to engrave them on the greatest depth, and with parts protruding into the space at a lower value to match the lighter shades of grey and thereby to engrave them on a smaller depth. In the process of converting a grayscale image to an engraving in gravitoelectromagnetic the plates creates a three-dimensional relief. This engraving tool can be moved so that the depth of the engraving grooves was changed continuously. Sharp and clear image can be obtained on paper, primarily due to the selection of the contour image.

In the simplest scenario, as original as you can use alphanumeric characters and/or simple graphic elements in the form of text or similar. Such signs and/or relief items have different heights, thereby giving the surface of the information carrier modulated structure. This effect is additionally enhanced in the case, if these signs and/or elements have different sizes.

According to one preferred options as the original it is proposed to use an image, such as portrait, which can be converted into an image with many different tones or shades of gray. Resulting from this transform individual grayscale or groups of these shades of gray then mapped to the different depth of the engraving of the printing form. For example, the maximum depth of the engraving matches the black, and the minimum - white color. In other words, in relation to, for example, nose depicted in the portrait of a man who (nose) is usually at the origin of the E. bright, brilliant plot, it means that the tip of the nose should be a grayscale image, the color black, and therefore, the printing plate to be engraved on this area in great depth, and obtained from this section of the printing form plot embossed image in relief above the surface of the paper.

In a similar way and all other parts of the portrait image is converted to corresponding shades of gray. In the following information about the depth of etching resulting from conversion of the original in such a grayscale image, is used to control the engraving tool. This verterbrae at different depth sections of the printing form directly adjoin one another. In other words, these areas are not separated from one another located at the level of the surface of the printing form intermediate stations. The depth of the engraved recesses can be achieved with 300 μm and more preferably up to 250 μm. In principle, for engraving printing forms can be used, as mentioned above, and laser engraving.

Manufactured with the method described in printed form for metallographic printing with three-dimensional engraved relief, later used for stamping media, the surface of which, in turn, the result of the stamping is also formed three-dimensional relief. This stamping process is essentially a conventional printing process, which, obviously, is not accompanied by the transfer of ink onto the canvas. However, the media, as with conventional metallographic printing, pressed into engraved in printed form recesses and under high pressure irreversibly deformed, i.e. subjected to embossing. Upon contact of the media with those areas of the printing plate, on which are engraved recesses have the greatest depth at its surface formed embossed or embossed elements of greatest height, i.e. formed plots on which the paper is subjected to the greatest strain, whereas the contact of the media with those areas of the printing plate, on which are engraved recesses have the least depth on its surface are formed embossed or embossed elements of the smallest height. Under high pressure the paper in contact with naprawianie areas of the printing plate respectively form for stamping, evenly compressed and compacted at least on its surface, so after metallographic printing these parts of the surface of the media acquire increased gloss.

The degree of gloss, respectively visual fro the people, created by the embossed areas of the image, you can also have a targeted impact. As mentioned above in the description of the well-known application WO 97/48555 technology of engraving, the choice of the form of the engraving tool and the parameters of its directional move bottom surface formed by removing material from the printing plate, can be targeted to roughen with a certain pattern. In the process of blind stamping this roughness, existing forms of stamping, affects the visual impression created by the embossed areas. For example, the use of engraving tools, the working of which has a large radius at the base and round geometric shape, and movement in the process of removing material from the surface of the printing form located close to each other (for example, approximately 10 μm) trajectories ensures prints with a smooth bottom surface, which allows to get a smooth and rather specularly reflecting stamping. Conversely, the use of engraving tools, the working of which has a small radius at the base with a pointed geometry of the cutting edge, and their movement in the process of removing material from the surface of the printing form on a remote at a greater distance from each other the ha (e.g., at a distance of approximately 50 μm) trajectories ensures prints with rough, profiled bottom surface, allowing you to get Matt and diffuse scattering light stamping.

Alternative or additional possibility to vary the light scattering embossed basis is that in the process of etching recesses in the printed form, respectively creaser to change the direction of removal or removal of material in some areas. Deepening engraved in print form through the movement of the engraving tool on line, but, for example, rotated relative to each other by 90° trajectories that allow you to get on the basis of visually distinguishable from each other embossed patterns, which are characterized by different reflection of light from them. It holds in relation to the engraved recesses obtained by moving the engraving tool on direct or meanjournal trajectories, in comparison with the engraved grooves performed by moving the engraving tool in a spiral or concentric trajectories. Such effects can not only make blind stamping more attractive or creating unusual optical impression, but at the same time increase the degree for which the ITA's such a stamping from a fake. Purposeful use of such engraving techniques can be used to add embossed relief structure, clearly visible only at certain angles of view, respectively, of reflection. For example, in the case of banknotes or other valuable documents on the halftone blind embossing, reproducing some portrait can overlay engraved substructure reproducing the banknote denomination or the nominal value of the document.

Embossed image is three-dimensional and has a relatively complex structure. The size of the area occupied by the halftone blind embossing, no restrictions.

Preferably, however, to occupy the halftone blind embossing area ranged from 0.25 up to several square centimeters.

Halftone blind embossing can be played any geometric element, such as round, triangular, rectangular or asymmetrical outline graphic symbol, font character or other symbol. Most preferably, however, reproduce the halftone blind embossing portrait image, since people because of its features on the perception of the world is able to focus on the smallest details and nuances of it is a portrait image that the substantial increase awareness and recognition of such a protective element. There is also the possibility to combine the halftone blind embossing in any number and any shape.

With the aim to further improve the degree of protection protective item from a fake halftone blind embossing can be combined with the background stamp received is different from the metallographic printing method. This background stamp is applied on the basis on individual printing stage to perform halftone blind embossing. The background stamp is preferable to perform continuous. Such a background stamp can be performed, for example, screen printing, offset printing, offset printing, high printing or digital printing.

To obtain background stamp can be used any ink, but it is preferable to use create a specific optical effect (decorative) paint, which through their physical properties further increase the degree of protection of the valuable document from forgery and which are difficult to simulate. The most appropriate use for this purpose paint with metallic effect, containing a metallic pigment ink containing interference pigments of the paint, such as paint IRIODINE® firm Merck.

In another embodiment, the background stamp may be a metal layer applied on the nose the tel information for example, a method of hot stamping.

The halftone blind embossing is preferably fully positioned on the area occupied by the background stamp. In one of specific embodiments of the invention the background stamp is invited to perform in the form of a metallic imprint oval or round shape. Then, on this background stamp metallographic printing is applied halftone blind embossing. The best is the location of the halftone blind embossing in the center background of the print, making the visual impression created by such a halftone blind embossing when it is superimposed on having metallic luster background stamp becomes similar to the visual impression created by the coin.

It is obvious that between the background stamp and the halftone blind embossing, as they applied to the substrate at various stages of the printing process, you may encounter the error register. Such a misalignment in the register can be made invisible by combining decorated with appropriately colored patches, arranged in precise registration relative to the halftone blind embossing, which gives a person the impression that the halftone blind embossing is the exact center of the background from which the claim with accurate wiring to it. This color plot, respectively coloured areas it is preferable to arrange with some offset from the halftone blind embossing, if only members of the blind stamping is not supposed to come close to colour plots, respectively, continue on them and thereby visually perceived as turning into them.

Coloured areas have so that they are superimposed on a background image or blocked it, and their shape and color selected so that the edge of the background print is visually perceived as "fuzzy", i.e. to exclude the presence of background print smooth, clearly defined contours, allowing you to effectively hide, respectively, to cover any variations in shape and size background stamp from the nominal. Coloured areas most appropriate to perform in the form of patterns of lines, such as guilloche patterns or drawings, but can be done in the form of solid sheets, primarily solid prints, the ink layer thickness which is sufficient to hide the background stamp on the overlapping with the areas, or who have the same background stamp, the color tone.

According to one preferred options color plot forms a frame surrounding the halftone blind embossing Such a frame can be shaped to any contour shape. Preferably, however, to give this frame an oval or round shape and place it around blind stamping with a specified offset from him so that blind embossing was on the center of the color plot. Such framing may be continuous or intermittent. Equally this frame it is possible to perform continuous or in the form of some patterns or drawings. Preferably framed in the form of gelosa or rings with optically blurred inner edges, along which you can, for example, be positioned facing toward the center of the teeth. Similarly, the frame may be composed of a font of characters or have geometric patterns, such as gelosi combined, for example, with the type characters. Similarly, you can make and the edge of background stamp. In the case when to make the edges of the background stamp optical blur used some ordered structure with periodically recurring items, such as cloves, Gelosie, arcs of circles or other elements provided on the colored area, and along the edge of the background stamp, location periodically recurring items ordered structure under the background of the print, with some angular offset recurring items shall now ordered structure, under the stained area, or the location of the duplicate items ordered structure under the background of the stamp, with a frequency other than the frequency location of the duplicate items ordered structure under the color section, allows to achieve an optimal effect of optical blur" the edges of the background stamp, respectively optimally to cover them.

Exact registration between the halftone blind embossing and colour imprint most simply provide their both metallographic printing. In this case, in printed form for metallographic printing for one technological operation carry out the engraving, designed to perform halftone blind embossing, and engraving, designed for printing color. In the process of metallographic printing the basis of it is most preferable to seal the colorful layers of great thickness, which can effectively hide may already present on the basis of the background print.

Such printed form for metallographic printing, as well as all other proposed in the invention of the printing form for metallographic printing, it is preferable to make the engraving using quickly rotating stichele pointed at the cone end. When e is om in the surface of the printing form in accordance with the circuit substrate, accordingly subjected to blind stamping surface engraving tool are deepening with the purposeful variation of the depth of engraving. If the engraving areas, some of which are intended for halftone blind embossing, and others to perform color in certain places immediately adjacent to each other, in such marginal areas in the material of the printing form is advisable to leave a partition with sharpened upper edges, as it is known from DE 19845436 A1, which prevents the penetration of printing ink on designed to perform halftone blind embossing part of the form, respectively, the leaking ink on being blind to the embossed part of the canvas.

Before the printing process ink filled all engraved in the surface of the printing form recesses, and only the part that is intended for execution of color. In the process of printing the basis of simultaneously pressed and held printing ink, and not bearing printing ink engraved areas of the printing form. When this printing ink from carrying it engraved areas is transferred to the Foundation. Simultaneously, the base is subjected to the usual metallographic printing stamping. At t is x sections, are forced to not bearing printing ink areas of the printing form, the basis is only subjected to embossing. With raw, i.e. nagraviroval surface areas of the printing form, the paint on the canvas is not tolerated.

When sealing, respectively embossing media described directly above its surface acquires a relief or embossed structure, which corresponds to the above engraving, made in printed form, on some of these embossed areas is printing ink. The dimensions of the coated paint layer areas of the print, such as their width and thickness present to them the paint layer, depending on the depth and width of the engraved proposed in the invention of the printing form recesses, and also used in printing inks.

The thickness of the paint layer is also determined by the covering power of conventional printing inks for metallographic printing, which, on account of this can be put on a base in the form of opaque paint or to a certain extent, semi-transparent and translucent colors. Drawing on the basis of the printing ink layer of a certain thickness when properly selected background color allows you to obtain a color tone different brightness and color saturation. When enough pain is th difference in the thickness of paint layers can be achieved easily discernible to the human eye without any auxiliary means of the contrast between the individual elements of the printed image. This assumes the presence of normal lighting conditions and the normal distance between the human eye and in his field of vision of the object (media).

To improve the stability of the media may be appropriate to apply protruding from the front side of the protective element of relief or embossed structure of the coating, such as varnish, simultaneously filling the gaps between its protruding elements. Part of this varnish may include certain substances, which have the characteristic features you can use them as signs of authenticity, such as phosphors and similar substances, or other creating a specific optical effect pigments, for example, liquid crystal pigments. In addition, this varnish can be matte or glossy. In addition, the protective lacquer layer allows also enhance the effect of gloss and to protect the lettering.

Equipped with such a complex protective element of the media is different because of contrasting the play between light and shadow created multi-halftone blind embossing, high degree of protection against forgery. The combination of such blind stamping performed metallographic printing color prints, which among other things can be izlecimi to the touch and are located with precise registration relative to the halftone blind embossing and overlap with the background stamp, additionally allows to increase the degree of protection of media from tampering and forgery.

Another possibility to increase the degree of protection of media from a fake is that a few times to play on the media image that is passed to the halftone blind embossing, but in each case different methods. For example, the same content image, you can play as a watermark and/or classic color imprint performed metallographic printing. The same image can be re-played in the background stamp, embossed hologram, using fluorescent or with optically variable properties of the ink (for example, using containing interference or liquid crystal pigments paints) or in the form of so-called latent image, and using any combination of these alternative methods.

This proposed invention, the protective element can be applied either to a single media, or on the basis that host a large number of identical media, and which are subsequently cut into individual media.

As such bases, respectively materials for the manufacture of information carriers can and shall use all suitable for metallographic printing materials, such as paper, polymeric film, laminated or coated with polymeric films, paper, and laminated composite materials. Proposed in the invention method can be used primarily for sealing media, which must meet the highest requirements regarding their protection from forgery and which are protected from fraud and valuable documents, such as banknotes, stocks, bonds, certificates, cheques, etc.

Other options execution and advantages of the invention discussed below in more detail with reference to the accompanying drawings on which is shown:

figure 1 - bill in the form in the plan,

figure 2 is a view in cross section plane a-a of figure 1,

figure 3-6 - various embodiments of the proposed invention is a protective element,

7 - grayscale image that is used for the halftone blind embossing proposed in the invention method,

on Fig is a graph showing the change of the engraving depth of the recesses in the proposed invention of the printing form for metallographic printing in a section plane a-a in Fig.7,

figure 9 is an information carrier, provided with a protective element made according to another variant,

figure 10 is an enlarged image of the fragment of the protective element, shown n the figure 9,

figure 11 is a view in cross section plane a-a in figure 9,

on Fig proposed in the invention, the information carrier in the form in plan and

on Fig image explaining the mutual positioning of the background stamp and the color of the plot.

Figure 1 as an example of the information carrier shown banknote 1, equipped with the proposed invention, the protective element 2. Such a protective element 2 consists of a background print 4, halftone blind embossing 3 and base stations 5, located with precise registration relative to the halftone blind embossing 3. To improve the security of banknotes 1 from a fake image that is passed to the halftone blind embossing 3, reproduced several times on the banknote different methods. In this example, this image is additionally present on the banknote 1, for example, in the form of a portrait 13, printed with steel engravings, and a watermark 14.

In the example proposed in the invention, the protective element 2 has the shape of a coin, the image of which the halftone blind embossing 3 is located within the background print 4, preferably with a metallic effect. On this background print 4 superimposed color imprint 5, which can be multi-colored and/or may be in the form of a specific pattern, picture, sign,symbol or similar elements. In the form shown in the drawing example, the colored areas 5 made in the form of a continuous frame surrounding the halftone blind embossing 3 and combined in some areas with the type characters "X Y Z" and the word "medal". Such colored areas 5 depending on the depth of the engraving of the printing form can have distinct imprint on the touch path.

However, these coloured areas may have any other form. For example, they can consist of guilloche patterns or drawings. Coloured areas 5 can additionally be coordinated in color with the background print 4, and in this case, the edge of the background print 4 will "merge" with these colored patches, i.e. it will not visually distinguishable.

To perform the proposed invention the protective element 2 on storage media in the first stage is applied background print 4. This solid background stamp, it is preferable to perform screen printing using inks with metallic pigment or pigment with a metallic effect, with gold or silver color. After that, in the area of the background print 4 in a single operation method of metallographic printing simultaneously perform the halftone blind embossing 3 and coloured areas 5. In other words, at this stage, for metallographic printing uses a printing plate, and eUSA engraving, the respective colored portions 5, and the engraving corresponding to the halftone blind stamping 3. It is obvious that for the printing process, the paint is only applied on the engraved areas that are designed for color plots 5. Thus in the process of printing media 1 information in the area of color 5 is exposed, as with conventional metallographic printing, stamping, and sealing paint. In contrast, in the area of the halftone blind embossing the media is only subjected to embossing. Under high pressure, with which the information storage device 1 is pressed into the grooves, engraved in steel printed form for gravure printing, on the reverse side of the carrier 1 information is made visible relief, respectively embossed structure.

Said illustrated in figure 2. Figure 2 proposed in the invention, the protective element 2 is shown in cross section plane a-A. In this drawing it is seen that in the area of the halftone blind embossing 3 media 1 information, respectively, the background print 4 is exposed in the process of metallographic printing only the embossing. Since the background stamp 4 is applied to the carrier 1 information on individual working operations between such background stamp 4 and halftone blind embossing, sootvetstvenno the colored areas 5 may be misalignment in the register. For this reason, the colored areas 5 to hide such a misalignment in the register preferably so that they are superimposed on a background print 4 or blocked it, as shown in figure 2. As shown in figure 2, the background print 4 on the left, to a substantially lesser degree overlaps colored patches 5 than in the right part. Since, however, the colored areas 5 are located with precise registration relative to the halftone blind embossing 3, this halftone blind embossing is visually perceived as located in the center of the background print 4.

Visually perceived optical effect generated three-dimensional relief structure of the halftone blind embossing, enhanced by the play between light and shadow, primarily when using background printing with metallic luster.

Ensuring accurate registration between the metallographic printing printed and embossed areas allows to obtain a combined image consisting of printed and embossed parts. For example, in the image of a tree, its trunk and branches can be performed blind embossing, and its leaves, respectively, the crown can seal the printed ink. In the case of images, presented in the form of text or other regularly dissolved, and the proposed elements or structures, line of printed characters or image elements can also be alternated with rows of embossed characters or elements of the image subject, however, accurate registration between the printed and embossed characters or elements in the image.

Figure 3-6 top view showing various embodiments of the protective element 2. Figure 3 background print 4 has a star-shaped outer contour with pointing away from the center of the imprint rays. In this embodiment, the colored areas 5 form a continuous annular frame which is printed the maximum concentric relative to the background of the seal 4 and the inner edge of which also has a star-shaped contour with facing toward the center of the ring beams. Different intervals are mutually included in the intervals between them, ray background stamp and received metallographic printing a color plot allows optically or visually hide the error register between both of these prints.

Shown in figure 4 protective element differs from that shown in figure 3 only in that the frame 5 comprises a background print 4 star outer loop around its perimeter, but only in some areas.

Figure 5 shows a fundamentally different embodiment of a protective element 2, in which at least some part of the halftone blind handling embossing, glossy lamination who were exact register adjacent to the colored areas 5 and space stations go to these colored areas 5. In the example schematically shown in the drawing, halftone blind embossing consists of having different shading, respectively shade sections 6, 7 and 8. Elements 7 halftone blind embossing form a cross and are adjacent to a color frame 5. When the rays of such embossed cross formed by the embossed elements 7, go also to colour frame 5 in the form of whitespace sections 9. To achieve exact registration between the embossed elements 7 and white sections 9 can only be achieved through simultaneous execution of stamping and color of the frame 5 in a single operation using a single printing form for metallographic printing. When possible attempts to forge a protective element, in which the embossed sections 6, 7 and 8 and coloured areas 5 are performed independently from each other, to provide such a precise registration between all these embossed and printed items is impossible. Such deviations in the register is quite easy to recognize visually, which allows a simple way to distinguish a fake from an authentic document.

Figure 6 shows the following embodiment of a protective element, which is similar to that shown in figure 5. In this embodiment, the halftone blind embossing 3 reproduces the image of the bird on the branch. At one end of the branch on Radovan embossed element 7, which comes to colour frame 5 and then continues at a sealed section 5 in the form of a negative image, respectively whitespace section 9. The same thing applies to the tail feathers of the bird. These tail feathers also come in the form of embossed elements 7 to the colored sections 5 and continue on them as whitespace areas 9.

7 shows a grayscale raster image data which can be used for making proposed in the invention of the printing form for metallographic printing. This grayscale image is created with three-dimensional original, with darker shades of gray should be correlated with those areas, which subsequently embossed the image must be in the space at the greatest value. Different shades of gray in this grayscale image are associated with different values of the depth of the engraving and the obtained data are then transmitted to the control system of a milling machine, which is equipped, for example, the CNC (computer numerical control) CNC type, and which in accordance with this information engraved printing form for metallographic printing.

On Fig shows a graph showing the change of the depth of the engraving in the section plane a-a in Fig.7. When this printing plate to be engraved on the greatest depth is in on the plot, corresponding to the tip of the nose, and the area corresponding to the frill, which figure 7 is presented in the form most of the dark areas. In other areas, which are located between the above mentioned areas and which are designed to transmit more light halftone printing plate to be engraved on a smaller depth.

Figure 9 as an example of media schematically banknote 1, equipped with the proposed invention, the protective element 2, made according to another embodiment. In this case, the proposed invention the protective element 2 consists of playing black dots background stamp 4 having the shape of an oval medallion, marked maximum in the center of this background print 4 halftone blind embossing 3, reproducing the figure "b". Background print 4 to create the visual impression of the coin, it is preferable to give the effect of a metal, most preferably gold or silver glitter.

Figure 10 shows an enlarged fragment depicted in Fig.9 protective element 2, covering the section plane a-a and below the plane of the cross section of the lower third of the number "6". In the present embodiment, the halftone blind embossing 3 consists of located at three different levels 10, 11 and 12 embossed elements formed in tinen the m image ledges, the ladder passing from one to another. It is obvious that similar levels of the embossed elements can be more than three. Shown in figure 10 the white portions 10 are those areas where the embossing is absent, and accordingly has only a few pronounced relief, light gray areas 11 represent those areas where the embossing has a more pronounced relief compared with areas of 10, and the dark grey parts 12 embossing has the most pronounced relief. The polishing material media, such as paper, respectively background stamp can make the parts 10, obtained with nagraviroval or engraved on extremely small depth sections of the printing form, a special gloss. In contrast, areas 11 and 12 give the impression of Matt.

Figure 11 media 1 information together with existing background print 4 schematically shows in cross section plane a-a in figure 10. This drawing clearly visible and are located at different levels 10, 11 and 12 embossed elements. When the sections 10 are the most smoothed, respectively naselenie plots obtained in the process of stamping with nagraviroval sections of the printing form. On sections 11 and 12 of the embossing on the storage medium is the medium, respectively, the most pronounced relief, and such phase is obtained with those areas of the printing form, which is engraved on average, respectively greater depth.

Differentiated gradation multiple levels of the embossed elements in the embossed image and the possibility to combine different these levels allow you to obtain a complex protective element that is instantly recognizable.

On Fig shown again proposed in the invention, the information storage device 1, for example a banknote, with the protective element 2. In this case, the reproduced dots background stamp 4 received printing offset printing in the form of a shiny surface is Golden brown. Then in the process of metallographic printing simultaneously with a colour section 5, the obtained halftone blind embossing 3, providing absolutely exact register in the mutual arrangement of blind stamping and framing his color imprint. Color plot 5 has a fine guilloche patterns, which are quite difficult to reproduce without the appropriate equipment. Color imprint with the intention that it graphically better fit in with the surrounding background, and to create a more smooth transition between it and the background stamp preferably has a diffused outer and inner parts, which are thin, intertwining lines in the form of a positive image, covering only a small area is. In contrast, the Central part of the colored print is a large area and, for example, "dotted thin lines in the form of a negative image.

The advantage of this implementation and the location of the color and background of the prints illustrated by Fig on which the position of the colored area 5 relative to the background of the stamp 4 is illustrated in the form of a bitmap image. Halftone blind embossing on this drawing is not shown. Color plot 5 is superimposed on the background print 4 so that the Central covering a large area of the colored print 5 was located on top edge of the background print 4. Because the background 4 and 5 color prints are the different methods of printing on unrelated operations printing in register between these prints in any environment, there is a mismatch, which can be several millimeters and which can significantly degrade the overall visual impression created is equipped with such a protective element of the document. Such inaccuracies in the mutual positioning of both prints are able to compensate and effectively hide due to their shown Fig execution and relative position.

1. Media (1) information, such as a banknote, identification card, or other similar documentary is a COP, provided with a protective element (2), which allows at least a visual its control and has at least in a portion of embossed, characterized in that the embossing is a halftone blind embossing (3)obtained metallographic printing without ink.

2. The information carrier according to claim 1, characterized in that the halftone blind embossing (3) reproduced alphanumeric characters, graphics, or a grayscale image, preferably a portrait.

3. The information carrier according to claim 1 or 2, characterized in that in addition to the halftone blind stamping (3) with exact register to it is provided at least one is made of metallographic printing color plot (5), the halftone blind embossing (3) and non-section (5) are indented from each other.

4. The information carrier according to claim 3, characterized in that the distance between the halftone blind embossing (3) and a colour plot or plots is at least 1 mm, preferably 3 mm

5. The information carrier according to claim 1 or 2, characterized in that the halftone blind embossing (3) and non-section (5) immediately adjacent one another.

6. The information carrier according to claim 5, characterized in that adjacent color areas (5) half-tone embossing is the first embossing (3) at least partially continues in the form of a white space area (9) on colored areas (5).

7. The information carrier according to any one of p-6, characterized in that the halftone blind embossing (3) is centered with respect to the color plot (5).

8. The information carrier according to any one of p-7, characterized in that the colored area (5) is made in the form of a frame surrounding the halftone blind embossing (3).

9. The information carrier according to any one of p-8, characterized in that the color plot represents gelosi.

10. The information carrier according to any one of claims 1 to 9, characterized in that the halftone blind embossing (3) fully drawn on the background stamp (4)obtained different from metallographic printing method.

11. The storage medium of claim 10, characterized in that background stamp (4) at least in a portion overlapped with a color plot (5), respectively, imposed on him.

12. The storage medium of claim 10 or 11, characterized in that background stamp (4) made screen printing, offset printing or offset printing.

13. The information carrier according to any one of p-12, characterized in that background stamp (4) made in the form of a decorative layer.

14. The information carrier according to item 13, wherein the decorative layer is made of metal, metallic paint, respectively paint with metallic effect or paint containing interference pigments.

15. N is Khabibullina information in item 13 or 14, characterized in that the decorative layer has a bronze, gold or silver color.

16. The information carrier according to any one of p-15, characterized in that background stamp (4) and non-section (5) color coordinated, preferably have the same color tone.

17. The information carrier according to any one of p-16, characterized in that the colored section (5) has an inner part that covers a large area, and the inner and/or outer part covering a smaller area, while the portion of the colored area, which covers a large area, is located on top of the background region of the seal (4).

18. The information carrier according to any one of claims 1 to 17, characterized in that the image reproduced halftone blind embossing (3), repeated numerous times in the media and obtained by different methods.

19. The information carrier according to any one of claims 1 to 18, characterized in that in addition to the halftone blind embossing (3) there is a watermark (14) and additional printed items watermark (14), additional printing element and the halftone blind embossing (3) reproduces the same image.

20. The storage medium according to claim 19, wherein the additional printing element (13) is made of metallographic printing.

21. The media information is according to any one of the preceding paragraphs, characterized in that the halftone blind embossing (3) there are separate areas with different roughness, creating a reflection from the light of different visually distinct effects.

22. The information carrier according to any one of the preceding paragraphs, characterized in that the halftone blind embossing at least in some areas imposed substructure affecting created them visual impression and having on various separate areas of different orientation.

23. A method of manufacturing a data carrier provided with a protective element, namely, that

a) prepare a material medium,

b) produce a printed form for metallographic printing, engraving into the surface of this printed form three-dimensional relief, and

in material media is subjected to blind stamping using custom stage b) printed forms for metallographic printing.

24. The method according to item 23, wherein the three-dimensional relief reproduce alphanumeric characters, graphics, or a grayscale image, preferably a portrait.

25. The method according to item 23 or 24, characterized in that stage b) in addition to three-dimensional topography of the surface of the printing form engrave at least one additional area, which location is shown with accurate wiring to three-dimensional relief print and fill paint, and then on stage) simultaneously with the execution of the halftone blind embossing on the material of the carrier transfer printing ink with additional engraved area.

26. The method according A.25, characterized in that the halftone blind embossing feature centered with respect to carrying a paint additional engraved area.

27. The method according to p. 25 or 26, characterized in that the coloured areas are in the form of a frame surrounding blind embossing.

28. The method according to p or 27, characterized in that the coloured areas represent gelosi.

29. The method according to any of PP-24, characterized in that after performing a stage a) for material media put a background stamp, runs great from metallographic printing method, and in step C) blind embossing perform completely on the plot background stamp.

30. The method according to clause 29, wherein the background imprint perform screen printing, offset printing or offset printing.

31. The method according to clause 29 or 30, characterized in that the coloured areas at least in a portion overlapping with the background stamp, respectively, imposed on him.

32. The method according to any of p-31, characterized in that the colored area perform in such a way that it has a Central portion covering substantially the th its area, and the inner and/or outer part covering a smaller area, while the portion of the colored area, which covers a large area, have a top edge of the background stamp.

33. Printed form for metallographic printing, designed to perform halftone blind embossing (3) and having at least one made in its surface engraved area, characterized in that the engraved area has engraved three-dimensional relief with continuously varying depth of the engraving.

34. Printed form on p, characterized in that the engraving has separate areas with different roughness on each of them.

35. Printed form on p or 34, characterized in that a three-dimensional relief of at least some sections superimposed substructures, which are on different sites have different orientation.



 

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