Method for deep printing from steel plates for manufacturing a forgery-protected document, and also steel printing form for deep printing and intermediate parts for its manufacture and method for making these
FIELD: printing technologies.
SUBSTANCE: steel printing form for deep printing contains on its surface at least one first section with printing structures, meant for producing an imprint by deep printing method, and at least one second section with structures intended for stamping, size of which is less than 100 micrometers. Parts of structures which are closest to the surface of printing form are positioned at a distance from 20 to 100 micrometers below level of printing form surface.
EFFECT: ensured stamping of securities and their simultaneous printing with usage of a single steel printing form for deep printing, and also high protection of securities from forgery is ensured.
9 cl, 15 dwg
The present invention relates to a method of manufacturing a tamper document, primarily securities, such as banknotes, cheque or other similar valuable document, coated with a gravure printing method with steel engravings, prints and plot with microrelief embossed, the size of the relief structures is less than 100 μm. The invention relates further to a method of manufacture suitable for carrying out the method of the instruments, namely steel printing plates for intaglio printing, and to a method of their production, including the manufacture of intermediate products for the manufacture of such forms, namely the original printed forms and intermediate forms for the manufacture of steel printing plates for intaglio printing, and made with them by using counterfeit documents. Printing method with steel engravings corresponds to the method of metallographic printing used in which the printing form is made of steel. The execution of the printing plate of steel allows to increase service life of such printed forms that you need for printing securities, and first of all banknotes in large print runs.
It is known that counterfeit documents in addition to applied by the method of metallographic printing the print can be of particular authenticity of the cat is undertaken in the context of the present invention are of greatest interest, an optically variable properties, such as an embossed hologram or grating, as described in DE-A-4002979, and blind stamping, described in DE-A-19845552.
Blind stamping is usually performed simultaneously with the rest of the imprint printing with the same steel engravings, for which designed for blind stamping parts of this engraving does not cause the printing ink. In the process of printing paper is pressed into including these designed for blind stamping parts of this engraving, being thus irreversible deformation. Because intended for blind stamping areas of the printing form, unlike for performing print areas, not filled with printing ink, pressed in these areas of the printing form paper deal only with irreversible deformation, in other words, the embossing, and the transfer of ink from the shapes on the paper in such areas does not occur. Such solutions are known from the publications WO 97/48555 (the closest analogue of the invention) and DE-A-19845552.
When examining such blind of tisani is created due to the play of light and shadow special optical impression of three-dimensionality. In addition, with appropriate dimensions blind stamping easily distinguished by touch.
Patterns that are designed to run as a blind of tisani and the rest of the print, usually in polnaya in the surface of the printing form by the chisel, laser or etching. In the context of the present invention any such structure, regardless of the specific technology and its implementation, denoted by generalizing the term "engraving". It is obvious however, that the achievable fineness of such structures is limited and restrictions as determined by the applicable technology, and by the fact that most small structures are not capable of a long time without damaging subjected to the mechanical action of the washing roller, which partially covered with printing ink printed forms are removed the excess of the dye. The unevenness in the movement of the roller on the surface of the mold, and the friction caused by the force with which the washing roller is normally pressed against this surface, soon lead to damage in contact with the platen designed for embossing structures of a size substantially less than 100 μm (in the context of the present invention, such structures are also called "microstructures"). Accordingly stamping to create special optical effects do microstructures with dimensions significantly smaller 100 μm, during the operation of the stamping carried out separately from the print operation designed for application on paper print from a steel engraving.
The same applies to the application of optical diffraction structure is R, such as holograms and grating. The order of the size of such diffractive structures corresponds to the wavelength range of visible radiation, i.e. less than 1 μm. Based on the above, in DE-A-19845552, for example, is first prepared with all protective elements, including, for example embossed diffraction patterns, securities, and only at the final stage of the manufacturing process of the latter apply to this paper, for example, by way of metallographic printing, the required prints. This diffractive structure is proposed, as one of the options to perform drawing on a pre-smoothed plot fundamentals of securities corresponding sequence of layers, with the first such smoothed plot is suggested to apply a curable lacquer, and on top of it is an extremely thin metal reflective layer. Then, in having the specified coating lacquer layer creaser invited to perform relief diffractive optical structure and over it spread a layer of protective lacquer.
Thus, the process execution is protected from a fake document embossed microstructures, whether blind embossing in the base material or the performance of a relief diffractive optical structures in the specially provided for this lacquer layer, required the implementation of a working operation, additional in relation to the operation for performing imprint printing with steel engravings.
Based on the foregoing, the present invention was based on the task to provide a method of manufacturing a tamper document, allowing a simpler way to do prints by intaglio with steel engravings and embossed microstructure.
In addition, the present invention was also based on the task to offer tools that are suitable for the implementation of the above method, and a method of manufacturing such tools and blanks for their manufacture.
In accordance with the invention these problems are solved in the methods and products described in the independent claims. In the respective dependent claims are shown preferred embodiments of the invention.
In the invention it is proposed to perform as the impression produced by the method of gravure printing with a steel engraving and embossed microstructure at one time printing and using the same printing plate, which is provided as an engraving for receiving a printed image and microstructure (for stamping patterns). To prevent damage to the engraved surface of the printing form microstruc the tour under the influence of moving on the surface of the wiping roller these microstructure made located slightly below the surface of the printing form - so low as to erase the platen did not come in contact with them, but at the same time with the ability to perform high-quality prints. The specific distance that these structures do not reach the surface of the printing form, depends, on the one hand, from the place of microstructured area, and on the other side of the compressibility of the material from which made the erase roller, and the efforts which the latter is pressed against the surface of the printing form. In accordance with the invention, the microstructure is located approximately 20-100 μm, preferably not less than 40 and not more than 60 μm, below the surface of the printing form, and these figures relate to the most close to the surface elements of the microstructures. So, for example, to exclude the possibility of contact between the wiping roller and positioned below the surface of the printing form the microstructures of the area of a square plot with microstructures must, for example, be less than 100 mm2. In other words, the length of the section with microstructures in the direction parallel to the axis of rotation of the wiping roller and parallel to the surface of the printing plate must be less than 10 mm
Several sites with microstructures may together form having a microstructure surface bolsig the size, moreover, in this case, individual plots with microstructures must be separated by partitions, reaching the level of the surface of the printing form. The width of these walls at the level of the surface of the printing plate must be sufficient to ensure that the wall could serve as a basis erasing roller and not be damaged under the impact of the effort with which this roller is pressed against the surface of the printing form. This way of smaller sites with microstructures you can create a two-dimensional matrix of arbitrary shape and an arbitrary size.
In the case of manufacturing a simple blind of tisani dimensions of microstructures, i.e. their height and/or size in the plane of the corresponding area, preferably be on the order of 5-100 μm. If using microstructures, for example, specifically for this purpose applied to the material is protected from a fake document and, under certain conditions, the metallized lacquer layer is expected to perform embossed diffractive relief optical structure, the order of the size of the microstructures can match the range of visible radiation and be approximately 1 μm or less.
Since such structures are so small that with sufficient accuracy to perform their usual methods used for the manufacture of printed forms, nab, the emer-chisel, laser or etching, it is not always possible, provided in the invention a method of manufacturing a printed form includes two stages. In accordance with the proposed invention method the usual way first made separately, on the one hand, the original printing plate having suitable for performing fingerprint engraving, and on the other hand is one or more having microstructure stamps for stamping, then this original print form or stamped with her matrix is combined with one or more original dies for stamping or made with them copies.
In accordance with the first embodiment proposed in the invention method, first, an original printing plate by stamping perform intermediate forms, the so-called matrix. The number of such embossed matrices correspond to the number of units of use of the area, which is supposed to provide for finished steel printed form for gravure printing. Along with the matrices are still copies of stamps intended for embossing microstructures, and the number of such copies corresponds to the number of units of use of the area, which is supposed to provide for finished steel printed form for gravure printing. Then Matri is s and copies of stamps intended for embossing microstructures combined with each other, for example having them near each other and connecting suitable way. At subsequent stages of the proposed method obtained the complex serves as an intermediate form to copy with the receipt of one or more copies of the printed forms, which are then used as steel printing plates for intaglio printing in the clamping mechanisms of the printing press.
In another embodiment proposed in the invention method on one or more sections of the original printing plate, in which the engraved printed image, choose the material, so that the resulting deepening can thus set the original(s) and stamp(s) intended for embossing microstructures that these microstructure was below the level of the surface of the mold. Then, the obtained complex perform matrix. Then a matrix group, the mutual location which you specify the desired location of the units use the square on the future of the printed form, forms an intermediate form for obtaining steel printing plates for intaglio printing.
In addition, the printing form, having designed for stamping microstructure below her nigroviolacea surface, you can also engrave directly. However, these prints should be pre is sonnym engraving device, since the standard device for engraving printing forms for metallographic printing do not provide adequate accuracy for repeatable execution of the specified structures with dimensions less than 100 μm. This precision engraving can be mechanical, i.e. cutting, and laser.
While designed to meet the print and fill printed paint deepening can be engraved in the surface of the printing form in the usual way, with those portions of the form, which will include the microstructure, is first removed material to a level corresponding to the closest without engraving the surface of the printing form parts of the respective microstructures. In the thus obtained below without engraving the surface of the printing plate surfaces of these sections, precision engraving perform microstructure. In principle, we can first perform the microstructure of the required depth and only then need to remove them too close to not having engraving the surface of the printing plate material to provide a desired distance between this surface and the most close to her areas of microstructures.
Having the microstructure of the original printing plate can be directly used as combiner the private printing form and creaser. However, this original print form you can also copy the normal methods of reproduction and production of secondary printed forms.
Proposed in the invention of the printing form for metallographic printing ensure fidelity embossed structures and high contour sharpness even when mass-circulation producing securities.
Because of metallographic printing base material, such as paper made from cotton fibers, is subjected to extremely high pressing force, this material is condensed and subjected to irreversible compression including on unsealed or non-embossed areas of the base. In those areas treated bases that come in contact with areas of the printing form, having not reaching the surface of the printing form of the microstructure, the base material is not subjected to compression or at least subjected to a less severe contraction than other areas, and as a result of contact with the microstructures of the printing form on these sites you have the basics with the micro-relief prints, or embossed microstructure. For wear protection such embossed microstructure may be covered by increasing the rigidity of the protective layers.
Below the invention is considered on the example of some variants of its domestic is with reference to the accompanying drawings, showing:
figure 1 - bill obtained by the method of gravure printing with steel engravings, prints and microrelief stamping,
figure 2 - shown in figure 1 banknote in the context with microrelief embossed in blind stamping,
on figa-3b is shown in figure 1 banknote in the context at different points in its production, with microrelief embossing in the form of causing the diffraction light pattern,
on figa-4G - separate stages of the manufacturing process proposed in the invention steel printing plate for gravure printing according to the first variant of the invention,
figure 5 is similar to the one shown in figure 1 banknote with multiple spaced from each other by areas with microrelief embossed and
on figa-6D - separate manufacturing stage proposed in the invention steel printing plate for gravure printing according to the second variant embodiment of the invention.
Figure 1 as an example of one of many possible types of counterfeit documents as the plan shows a banknote received by intaglio with a steel engraving print 1 and obtained by the same method microrelief embossed 2. This microrelief embossing 2 may be performed, for example, in the form of blind stamping paper-based or in the form of calling the diffraction of light is elenai patterns on printed on paper based polymer layer.
Figure 2 shown in the cross section depicted in figure 1 banknote, which microrelief embossing 2 made in the form of blind stamping on the top 3. Applied by gravure printing with steel engravings and forming print 1 printing ink in relief above the surface of the base 3 in the form of distinguishable for this reason, at the touch of tabs.
Convex micro-relief or relief microstructure microrelease stamping 2 represents, for example, linear raster with a frequency lying in the range from 5 to 100 μm. Such a relief structure visually distinct in the form of small, creating the effect of light and shade of the picture, and it occupies a surface under certain conditions also distinguishable by touch from the surrounding, non-embossed surface.
In the shown figa-3b example microrelief embossing 2 made in the form of calling the diffraction of light relief patterns. In this case, the size of these relief structures is of the order of 1 μm or less than 1 μm, i.e. comparable to the wavelength of visible light. On figa shown have not yet been sealed banknote base 3, the surface of which is smoothed in zone 4 in order to ensure the most durable grip subjected to the subsequent embossing lacquer 5 based on 3 on its site. On the lacquer surface 5 a thin layer of spray deposited metal is against the floor 6. The next phase prepared in this way the base 3 by intaglio with steel engravings put the stamp 1 and simultaneously subjected to embossing with obtaining causing the diffraction of light microrelease stamping 2 (figb). Then microrelief embossing 2 covers scratch resistant protective lacquer 7 (pigv).
Shown in figure 2 and figa-3V embodiments, the stamp 1 and microrelief embossing 2 is carried out in one pass using a single printing plate. Suitable for this purpose, the printing plate 8 is shown in the section on high and 6D. According Figg in the surface 9 of the steel printing plate for gravure printing are printing patterns 10 in the form of recesses for receiving the seal 1 and microstructure 11 to obtain microrelease stamping 2. These microstructure 11 slightly recessed relative to the surface 9 of the printing form, and therefore the upper part, i.e. the vertices formed by these microstructures elevation, are located at a small distance d below the surface 9 of the printing form. This distance d is from 20 to 100 μm, preferably from 40 to 60 μm. To obtain a protective seal first portion of the surface 9 of the steel printing plates in the printing structures 10 is applied printing ink, the excess of which is then removed from the surface 9 of the printing form is not shown in the drawing, erase the platen. However due to the location of filigree microstructures 11 below the surface of the printing plate washing roller is not in contact with them and can't damage them. During the subsequent printing process, the base is protected from a fake document is pressed into educated printing structures 10 of the recess and formed by the microstructures 11 deepening, resulting, first, printing ink, sticking to the substrate surface, is transferred to it from educated printing structures 10 of the recesses, and, secondly, the surface of the base is protected from a fake document is exposed to on a plot of microstructures 11 stamping, i.e. irreversible deformation.
Used in the process of receiving print by intaglio with steel engravings of pressure or pressure and temperature of the plate cylinder is enough for stamping the usual counterfeit securities, without allowing any problems to expose counterfeit paper stamping and simultaneously to seal it using a single steel printing plate for gravure printing. A typical heating temperature of the plate cylinder is about 80°With, however, may lie in the range of from 50 to 90°C.
Below with reference to figa-4D and 6A-6D are considered two different versions of the method have been made the value of the printing form 8 with recessed below the surface of the microstructures 11.
In the first stage (Figo) in the original printed form On a conventional method, namely, for example, etching using stiches or etching, perform print patterns 10 intended to receive the imprint method of gravure printing. Separately from the original printing plates made one or optionally several different stamps D for stamping with microstructures 11, which also perform the traditional method, i.e. for example, the same methods that are commonly used for the manufacture of causing diffraction of light relief structures.
In the second stage (figb) with the original printed form and stamp D for stamping made copies of them. The process of making a copy of the original printed forms, i.e. the matrix M can be, for example, in mechanical matriciana original printing plate by pressing in a plastically deformable plastic (for example, the indentation in the plate of material Cobex), which then forms the matrix M. however, it is possible to use other known methods of producing secondary forms. The matrix is made in the number of M1, M2, ..., Mnthat corresponds to the number of duplicate images on one made of steel printed form for gravure printing. With one or more stamps D for stamping with m is crostructure 11 also produce an appropriate number of his (their) copies of DD 1DD2, .... Copies of DD from a stamp or stamps for stamping preferably produce electroformed, for which the microstructure 11 first give electroconductive properties, and then it is applied metallic coating, for example of copper. The copper coating is then to make the microstructure hardness add, for example tin, then pour a lead or plastic, providing in this way the possibility to operate with a copy of the DD stamp for stamping.
At the third stage (pigv) matrix M1, M2... and copy DD1DD2, ... stamp for stamping feature next to each other and firmly connected between a respective suitable for this purpose, methods such as bonding, which results in an interim form z Have shown figv interim form Z each of the matrices and copies of the creaser form their pairs M1DD1accordingly M2DD2and so on, each of which corresponds to one unit of the use of the square made by this interim form Z steel printing plate 8 for gravure printing. This drawing clearly shows that the microstructure, which in this case have the form of curved microstructures 11', a few are over forming plane 9' intermediate forms Z.
Steel printed fo the mu 8 gravure also produce electroformed up with an interim form Z (figure 4 g) is similar to the process of copying stamp D for stamping. Additionally, the surface 9 of the printing form can at a later stage to strengthen the Nickel plating or chrome plating.
On figa-6D illustrates another variant of the method of manufacturing the printing plate 8. In accordance with this option, first make the original printed form Of print structures 10 intended to receive the imprint of the intaglio (figa). Then, the surface of the original printing plate On on certain areas of the segments of the removed material, such as precision milling (figb). In thus obtained the recess 13 then insert similar to that shown figa stamp D for stamping with microstructures 11 (pigv). This stamp D for stamping must be accurate prepisovanie processing order after it is put in the recess 13 of the microstructure was located at a certain distance d below the surface of the original printing plate O. Prepared by original printed form About use then for pressing matrices M (high), which in this case can for example be used a method based on the indentation of an original printing plate in the plate of material Cobex. In this embodiment, each matrix M is used for further production of one full unit used in the Finance area of manufactured steel printing plate 8 for gravure printing. Therefore, the number of produced from one original printed forms (pigv) invested in it, stamp D for embossing matrices M1, M2, M3, ... corresponds to the number of units using the square end of manufactured steel printing plate 8 for gravure printing. Matrix M1, M2, M3... and in this case, connect a suitable for this purpose method of obtaining interim form Z (figd), copying, which then electroplating methods produce steel printing plate 8 for gravure printing.
In another embodiment, it is possible to immediately make pressing the interim form Z desired size, for which the operation of the indentation shown in figv original printed form in the workpiece intermediate forms of appropriate sizes need to be repeated several times by the number of units of use of the area. In this case, there is no stage of connection of the individual matrices M1, M2, M3... at a single intermediate form Z.
The above-described various embodiments of the method of manufacturing the printing plate, thus equally suitable for conversion performed in its original print form print structures 10 and made in the original stamp for embossing of microstructures 11 across the intermediate run "reversible structures ' 10', 11' in the interim form Z again in a positive patterns 10, 11 in the finished steel printed form 8 for gravure printing. However, preference should be given to that described above with reference to figa-6D option, because the placement of microstructures 11 at any desired location within the stamp 1 is easier to achieve due to space related stamps D for stamping recesses 13 in its original printed form On (pigv) than by the precise connection between the copies of printed forms, respectively, of the matrix M (pigv) and copies of DD stamp or stamps for stamping. Steel printing plate 8 for gravure printing, designed primarily for shown in figure 5 seal 1 with an integrated areas microprofiling embossed 2, it is most expedient to make way illustrated in figa-6D. In obtained by the method of gravure printing with a steel engraving of the stamp 1, which figure 5 indicated only conditionally its footprint, several sites with microprofiling embossed 2 form field microrelief embossed structures within which individual plots with microprofiling embossed 2 are offset from each other. The presence of such gaps 12' between the individual plots with microprofiling embossed due to the fact that the individual occupied by the microstructures 11 participants and steel printing plate 8 for gravure printing should not prevent damage to the microstructures of the erase roller to be greater than a certain maximum value area and therefore are separated from each other by partitions 12 (high). These walls 12 and end at the level of the surface 9 of the printing form and are required for efficient perception provided the erase roller pressure width.
1. Steel printing plate (8) for gravure printing on the surface (9) which has at least one first section of print structures (10)designed to receive the imprint method, gravure printing, and at least one second section with intended for embossing structures (11), the size of which is less than 100 μm and coming to the surface (9) of the printing form which is located at a distance of from 20 to 100 µm below the surface (9) of the printing form.
2. An intermediate form (Z) for the manufacture of steel plates (8) for gravure printing according to claim 1, having at least one first segment (M) with reversible structures (10'), which is the negative display printing structures printing plate for gravure printing, and at least one second, different from the first segment (DD) with reversible structures (11'), which is the negative display is designed for embossing structures, and having a molding plane (9'), next to which parts of reversible structures (11'), which is the negative display designed for embossing structures are located on rasstoyaniyam 20 to 100 μm above the level of this molding plane (9').
3. An intermediate form (Z) for the manufacture of steel plates (8) for gravure printing according to claim 1, having at least one segment (M) with reversible structures (10'), which is the negative display printing structures printing plate for gravure printing, and negative structures (11'), which is the negative display is designed for embossing structures, and having a molding plane (9'), next to which parts of reversible structures (11'), which is the negative display is designed for embossing structures are located at a distance of from 20 to 100 μm above this molding plane (9').
4. Original printed form for the manufacture of intermediate forms according to claim 3, having the printing patterns (10)designed to receive the imprint method, gravure printing, and at least one recess (13)in which is inserted the stamp (D) for stamping with intended for embossing structures (11) in such a way that nearest to the surface of the original printing plate (About) part of these intended for embossing structures (11) are located at a distance of from 20 to 100 microns below the surface.
5. The object of the invention according to one of claim 2 to 4, in which the size intended for embossing structures is ≤100 microns.
6. The object of the invention according to one of claims 1 to 4, whose size is prednaznachennyh for embossed structures (11) is from 5 to 100 microns.
7. The object of the invention according to one of claims 1 to 4, which are designed for stamping patterns (11) is designed in such a way that they provide embossed calls the diffraction of light relief structure.
8. The object of the invention according to claim 7, in which the size intended for the embossed structures (11) is less than 1 micron.
9. The object of the invention according to one of claims 1 to 4, which are closest to the surface (9) of the printing form, respectively to molding plane (9') of the intermediate forms part intended for embossing structures (11) are removed by at least 40 μm from the surface (9) of the printing form, respectively, of the molding plane (9') of the intermediate form.
10. The object of the invention according to one of claims 1 to 4, which are closest to the surface (9) of the printing form, respectively to molding plane (9') of the intermediate forms part intended for embossing structures (11) are removed by at least 60 μm from the surface (9) of the printing form, respectively, of the molding plane (9') of the intermediate form.
11. The object of the invention according to one of claims 1 to 4, in which the area planned for the embossed structures (11) is less than 400 mm2preferably less than 100 mm2.
12. The object of the invention according to one of claims 1 to 4, which several parcels intended for handling embossing, glossy lamination is of structure (11) form a flat die used for stamping structures.
13. The object of the invention according to one of claims 1 to 4, which are designed for stamping patterns (11) are separated from those intended to receive the imprint of the intaglio printing structures (10) or from another parcel with intended for embossing structures (11) by a partition (12), which reaches the surface (9) of the printing form, accordingly to the level of molding plane (9') of the intermediate form and the width of which is at least 0,5 mm
14. A method of manufacturing an intermediate form according to one of claim 2 and 5-13, namely, that in the original printed form (O) perform designed to produce a seal with intaglio print structure (10) and with this original printing plates (A) made at least one matrix (M), make a stamp (D) for stamping with intended for embossing structures (11) and with this stamp (D) for stamping make at least one copy (DD) and then produce an intermediate form (Z) with a molding plane (9') by location next to each other one or more matrices (M, M1, M2, ...) and one or more copies (DD, DD1DD2, ...) creaser and their connections in such a manner that the next to the molding plane (9') parts intended for s is s structures were located at a distance of from 20 to 100 μm above its level.
15. The method according to 14, in which intermediate forms (Z) are made of steel printing plate (8) for gravure printing.
16. The method according to item 15, in which a steel printing plate (8) for gravure printing are made with intermediate forms (Z) electroplating methods.
17. A method of manufacturing an original printing plate according to one of claims 4 to 13, which consists in the fact that in the original printed form (O) perform intended for receiving print by intaglio printing patterns (10), equipped intended for receiving the imprint of the intaglio printing structures (10) the surface of the original printing plates (A) perform at least one recess, made stamp (D) for stamping with intended for embossing structures (11) and then this stamp (D) for stamping is inserted into the specified recess (13) thus, so coming to the surface of the original printing plate (About) parts intended for embossing structures (11) located at a distance of 20 to 100 microns below the surface.
18. The method according to 17, in which the original printing plate (A) with the inserted executed by the recess (13) stamp (D) for stamping pressing, produce several matrices (M1, M2, ...), which then have next to each other and connect to each other is a single intermediate form (Z).
19. The method according to p, in which intermediate forms (Z) are made of steel printing plate (8) for gravure printing.
20. The method according to claim 19, in which a steel printing plate (8) for gravure printing are made with intermediate forms (Z) electroplating methods.
21. A method of manufacturing a steel printing plate (8) for gravure printing according to one of claims 1, 5-13, namely, that in steel printed form (8) for gravure perform intended for receiving print by intaglio printing patterns (10), as well as engraving perform it intended for stamping patterns (11) so that nearest to the surface of the printing plate (8) for gravure printing of these intended for embossing structures (11) located at a distance of 20 to 100 microns below the surface.
22. The method according to one of PP-21, in which the size intended for embossing structures (11) is ≤100 microns.
23. A method of manufacturing a tamper document by intaglio using appropriate steel printing plate according to one of claims 1, 5-13, namely, that intended to receive the imprint of the intaglio printing patterns (10) steel printing plates (8) gravure fill the printed ink not filling in this print the oops paint designed for stamping patterns (11), and counterfeit document in one pass sealed with a partially completed printed paint steel printing plates (8) for gravure printing, and subjected to embossing by pressing into it intended for embossing structures with attached pressure, which is sufficient, on the one hand, to migrate ink used to obtain a seal with intaglio printing structures (10)and, on the other hand, for stamping in the area of contact with him intended for embossing structures (11).
24. The method according to item 23, in which the embossing is protected from a fake document in the area of contact with him intended for embossing structures (11) is performing it blind stamping.
25. The method according to item 23, which is protected from a fake document is suitable for embossing the coating (5, 6), in the location area in which it during embossing is protected from a fake document squeezed causing diffraction of light relief structure.
26. The method according A.25, in which embossed coated cover with a transparent protective layer (7).
27. Protected from a fake document obtained by the method of gravure printing with steel engravings, prints and microrelief embossed performed with the use of printed forms for metallographic printing according to one of claims 1, 5-13.
SUBSTANCE: method comprises exposing photosensitive layer applied on magnesium plate to ultraviolet radiation, etching in nitrogen acid, removing photosensitive layer, washing in fresh water, and drying.
EFFECT: enhanced quality of printing plate.
FIELD: metallographic printing.
SUBSTANCE: form is meant for producing printed image or imprint and has at lest one engraved portion on surface with one or more structural elements. Edge portion of structural elements is engraved for greater depth compared to depth, at which their inner portion is engraved, edge portion and inner portions are directly adjacent, directly merge into one another and inner portion is made in form of area, positioned below surface of printed form.
EFFECT: higher efficiency, lower costs.
4 cl, 4 dwg
FIELD: printing engineering.
SUBSTANCE: invention, in particular, relates to a method of printing allowing protection of printing materials against counterfeit reprints, for instance in fabrication of banknotes, shares, checks, and other valuable paper documents. Invention provides printing liquid for printing through narrow nozzles onto objects, in particular when fabricating banknotes, shares, and checks, which liquid comprises carrying medium and nanoparticles of metal salts in the form of crystalline solid particles having average diameter less than 300 nm, which fluorescent and phosphorescent when excited by UV emission of the A, B, or C band, or visual light, while emitted fluorescent and phosphorescent waves do not lie in the visual light frequency region and excitation frequency region and emission frequency region are shifted in frequency scale. Nanoparticles contain enhancing additives of at least one type having excitation and emission frequency ranges corresponding to fluorescence and phosphorescence. Provided is also printing method including injecting of above-described liquid(s) through one or several narrow nozzles, which are regulated individually or by groups in relation to availability or lack of printing liquid and in relation to duration or intensity of flowing of printing liquid. Printing method is either piezoelectric method or jet printing one. Employment of proposed liquid for ink-pots and object marking, in particular when fabricating banknotes, shares, and checks involving printing equipment provided with one or several narrow nozzles is also described.
EFFECT: increased reliability of protection.
15 cl, 2 dwg
FIELD: valuable paper securities and method for manufacturing of valuable paper securities protected from counterfeit.
SUBSTANCE: method involves introducing protective member formed as figured metallized polymeric thread onto net of netted cylinder of papermaking machine; dehydrating while forming face layer from pulp; pressing. Thread has central core and wing-shaped side members. During pressing, protrusion of thread wing ends above net surface onto paper surface, along at least one edge of figured thread by means of said members is provided, so that intermittent line is formed with constant or varying intervals between ends of thread wings.
EFFECT: enhanced protection of valuable paper securities from counterfeit.
6 cl, 13 dwg
FIELD: chemical industry; printing industry; other industries; methods of production of the composition of the paint including the optically changeable pigments.
SUBSTANCE: the invention may be used in production of the optically changeable pigments. The optically changeable pigment includes the stratified set composed of the different materials, in which, at least, one of the layers represents the reflecting layer and, at least, one of the other layers represents the dielectric layer. At least, one of the surfaces of the indicated layers is subjected to the chemical action. The indicated materials also include, at least, one of the layers, which represents the semitransparent metallic layer made out of chromium and also one or more metals and-or their inorganic compounds. At that the metal and-or its inorganic compound are subject to corrosion. The subjected to the chemical action surface of the reflecting and dielectric layer along the edge of the layering block of the edge structure of the pigment is coated with the passivating agent, which is selected from the group consisting of the organic esters and the fluorinated organic esters of the phosphoric acid, having the following structural formula: (Rf-CH2-CH2-O)xP(O)(OH)y, where Rf=F-(CF2-CF2)z, х=1 or 2, у=2 or 1, х+у=3, z=l-7. The composition of the printing paint includes the binding system, water and the optically changeable pigment. The invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.
EFFECT: the invention allows to diminish oxidation of the metallic layers and dissolution of the dielectric layers of the optically changeable pigment and to use it in the compositions of the printing paint.
22 cl, 7 ex
FIELD: protective elements for documents.
SUBSTANCE: protective element contains at least two adjacently positioned zones without metallic materials. One of aforementioned zones has a layer of material, light refraction of which changes with change of light falling angle. Another zone has a layer of material with constant reflection. At least one of aforementioned zones forms sections without material for forming graphic markings and signs, which may be visually detected.
EFFECT: high degree of protection of securities from forgery with low costs of manufacture of protective element.
2 cl, 4 dwg
SUBSTANCE: method comprises generating two homogeneous dot areas with relative area of the dot members of 60-70% for the first dot area and 15-20% for the second dot area which is equal to the guilloching member thus imaging dark areas in the first dot area and light parts in the second dot area, applying the picture on the dot areas, and filling the image with the same dots shifting by the half of the dot line space.
EFFECT: enhanced reliability.
FIELD: marking and identification of protected articles, such as bank-notes, service papers, labels, foil, fiber, card or industrial products.
SUBSTANCE: proposed printing ink contains dyes or pigments of expanded or hyperchromatic color space which is not reproduced by means of standard 4-color reproducing equipment. Identification of marking includes mathematical conversion of non-processed spectral information into statically independent hyperchromatic coordinates and comparison of selected hyperchromatic coordinates with respective standard magnitudes. Specification gives also description of printing inks and method of marking and identification of articles.
EFFECT: enhanced efficiency.
25 cl, 6 dwg, 2 tbl, 4 ex
FIELD: printing form for printing of, in particular, securities and documents, and a printing method.
SUBSTANCE: printing form contains, at least, two functional layers 1 and 2, first one of which is made with through printing elements 3 and 4 for transferring painted image directly onto carrier material 5. Printing form has means 8 for tearing paint layer and redistributing paint in printing elements between layers, which means may be made in form of a mesh or honeycombed structure between layers 1 and 2. In accordance to invention, printing method includes transferring form pattern onto carrier material by means of described printing form, while during printing pressure is created in printing zone, value of which exceeds the yield point value of the carrier material.
EFFECT: possible creation of imprints, analogical to metallographic printing imprints, with more complicated structure and increased degree of protection from forgery; improved quality of imprints due to decreased probability of spraying of paint across space sections of form during printing, and also due to fine-grain structure of imprint surface with high productivity and possible use of broad assortment of painting materials.
4 cl, 12 dwg
FIELD: protective members for visual controlling of authenticity of printing product such as security papers, banknotes, identification cards.
SUBSTANCE: protective member is formed as color layer applied to substrate and having color-free portions produced by exposing color layer to laser radiation for forming of image detected by visual control. Substrate surface is provided with relief, said image being formed on at least one side of relief after exposing to laser radiation falling at predetermined angle to relief surface. Protected printing product is equipped with protective member for visual controlling of paper authenticity.
EFFECT: increased extent of protecting printing products due to creation of protective member more complicated for counterfeit and using optical variable image.
7 cl, 5 dwg
FIELD: graphic arts industry, in particular, processes for manufacture of protected graphic product with protected member for controlling authenticity of said product.
SUBSTANCE: method involves applying polymeric film material thread having central part and edge zones onto net of netted cylinder of papermaking machine; providing dehydration during forming of paper pulp layer and pressing thereof; before applying of thread onto netted cylinder net, deforming at least one edge zone of thread. Protective member for controlling authenticity of protected graphic products and paper with protective member are manufactured according to said method.
EFFECT: improved workability of protective member during introducing it into paper pulp and simplified process for manufacture of protective member and paper.
15 cl, 5 dwg
FIELD: printing arts; printing inks for securities; protection against falsification.
SUBSTANCE: proposed printing ink contains pigment possessing protective properties, binder and thinner; pigment contains ultra-dispersed powder of rare-earth ferrite-garnet selected from group including Y3Fe5O12, Ln3Fe5O12, YxLn3-xFe5O12, where Ln is rare-earth element, 0≤x≤3, Y3-xBixFe5O12, where 0≤x≤2 with sizes of crystallites not exceeding 100 nm in the amount not exceeding 85% of weight of ink. Optical characteristics are extended within 380-750 nm and infrared transparence is increased within 0.74-3.0 mcm.
EFFECT: enhanced identification due to magnetic properties.
8 dwg, 1 tbl, 3 ex
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
FIELD: working materials by cutting, engraving relief structures.
SUBSTANCE: method comprises steps of removing allowance at least for one pass of planning cutter having stem and cutting part in the form of trihedral pyramid; before starting working and at changing direction of cutting path for opposite one in zone of broken portions of cutting path and in portions of cutting path joined with small curvature radius, rotating cutter around lengthwise symmetry axis of stem by angle normalized by direction of cutting path; in order to improve working efficiency, using cutter with cutting portion in the form of regular truncated pyramid whose lengthwise symmetry axis is matched with lengthwise symmetry axis of stem and whose small base is apex of cutter; using each lateral face of said pyramid depending upon cutting sign as front surface of cutter; at changing cutting direction for opposite and in zone of broken portions of cutting path and also in portions of cutting path with small joining radius, using as front surface of cutter face of cutting part to be turned by minimum angle due to rotation of cutter for optimizing its spatial position relative to cutting surface.
EFFECT: enhanced working efficiency of method.
6 cl, 12 dwg
FIELD: working materials by cutting, engraving relief structures.
SUBSTANCE: cutter includes stem and cutting part in the form of trihedral truncated pyramid having lateral faces inclined by acute angle relative to lengthwise symmetry axis of stem; small base of said pyramid is apex of cutter. In order to improve efficiency, said truncated pyramid is regular one. Each lateral face of such pyramid is designed for using as front surface depending upon its spatial position relative to cutting direction. Symmetry axis of cutting portion may be matched with lengthwise symmetry axis of stem.
EFFECT: improved design of cutter.
2 cl, 12 dwg
FIELD: manufacture of plates used for intaglio printing.
SUBSTANCE: method for making engraved plate with use of tool such as laser beam comprises steps of using engraving tool operating with use of data of depth card formed on base of three-dimensional raster image of printed document; similarly making intermediate engraved plates.
EFFECT: shortened time period for engraving high-quality plates, prevention of warping of plates at printing process.
21 cl, 15 dwg