Method of printing protective element from counterfeiting and the protective element

FIELD: printing.

SUBSTANCE: invention pertains to the method of printing a protective element from counterfeiting, the protective element and to valuable documents with the above mentioned protective element. The method of printing the protective element from counterfeiting of security papers, for example, banknotes and other similar document on a substrate lies in that, a certain background is printed on the substrate. A certain figure is printed, at least partially covering the above mentioned background, using an opaque optically changing printing dye. The above mentioned figure is made with using the screen printing process, or flexographic method or photoengraving using the corresponding sieve, anilox roller or printing form. The fineness of the given structure or lieature is chosen in such a way that, the printed figure is semitransparent, while the background can be seen through this figure.

EFFECT: higher degree of protection from counterfeiting and copying the protective element, and consequently the security papers.

10 cl, 4 dwg

 

The present invention relates to a method of printing element of protection against forgery of securities, such as Bank notes, cheques, credit cards, passports or other identity documents, and similar documents.

The present invention also relates to an element of protection against forgery of securities, such as Bank notes, cheques, credit cards, passports or other identification documents and other similar documents.

In the production of securities, in particular Bank notes, there is a growing need for the creation of security features designed to prevent the possibility of forgery of such documents. Recently there has been a rapid development of techniques and technologies of computers, scanners and Photocopying devices, resulting in the present time there is an opportunity to purchase the aforementioned equipment with high performance and features at affordable prices. Because these devices have more capabilities, it is necessary to develop new and innovative security features of valuable papers, which themselves should have higher performance and should be designed to equip the securities, in particular Bank notes cheques credit cards, passports or other identification documents and other similar documents in order to exclude the possibility of falsification of these documents and copy them with the help of modern computers, scanners, photocopiers and various devices.

Such elements counterfeit protection is used, in particular, special inks, such as optically variable ink ("OVI" ®) and other printing ink, having the properties of pereuchivali used for printing pictures or some specific geometric forms on the surface of the securities optically variable elements ("OVR" ®) in the form of metallized labels (called "foils") or holograms, as well as iridescent drawings and other images that, on the one hand, it is quite difficult and even impossible to copy using modern heliographic equipment, and on the other hand, is very easy to visually monitor and even to the naked eye.

Other elements of protection against forgery form combinations superimposed on each of the lines and/or drawings in color, which may be visible only under certain conditions, for example when illuminated with UV rays or when viewed against the light. First of all, the advantage of t the fir elements of protection against forgery is that they can be easily printed or placed on the document, which must be protected, and such protective elements can be controlled by using a fairly simple devices and even to the naked eye, despite the fact that they cannot be reproduced using modern printing devices, scanners and photocopiers.

As an example we can mention the patent US 6050606 used as references in the patent application, which describes an element of protection against forgery, intended for protection of securities, such as Bank notes. This protection element is formed by a background having at least two adjacent areas, and each area contains its own geometric patterns, and these areas have different color density. These protection element further comprises a graphical element corresponding to this area, a color density which is somewhat smaller, and which is printed over the said region in the color selected in such a way as to compensate for the difference in color density between these two areas. Thus, this element of protection appears to be homogeneous and does not have a graphical picture when viewed with the naked eye, but this graphic clearly will ustupaet in the process of photocopies of the above-mentioned protection element.

In the patent US 5443579 used as a reference in this patent application, describes another method of printing a latent image on the substrate, representing be protected document. In accordance with this patent provide a combination of print embossed lines with print flat lines with no relief. Thus creating a latent color image that cannot be reproduced using the photocopier or other svetotekhnicheskikh processes.

In patents US 5853197 and US 5487567 used as references in this patent application presents the elements of protection against counterfeiting, which hardly vary with the naked eye, but which become clearly visible during playback of the given element by means of Photocopying or scanning.

In accordance with another specific technology counterfeit protection using watermarking, in which the substrate to be protected document, such as paper, marked with lines or patterns, which are visible to the naked eye only on clearance. The development of this technology applies pseudosolenia characters formed by creating a window in the substrate of the document, and this technology is used in particular for substrates of paper, which themselves are generally not transparent, and PR is becomes clear only mentioned the window.

In the patent US 6082778, the content of which is incorporated by reference into the proposed patent application described identity card is protected from unauthorized copying using the photocopier. In accordance with this patent the basic idea is to create an element of protection against fakes, formed by combining the protective effect achieved by using a thin metal film with certain physical properties, in particular optical properties of some additional layer, and the combination of the protective effects prevents the reproduction of such cards. Under the transparent coating layer is a layer of metal applied over a layer having specific optical properties. In accordance with the first way of implementing the above-mentioned metal layer is locally demetallized, thus opening said additional layer having specific optical properties, that is, makes it visible in the above detalizirovannoi zone. Due to the contrast differences between the layers are formed label, formed by sections of demetallization, readily identifiable to the naked eye. In accordance with another specific way of implementing the above-mentioned layer having a specific and optical properties, has a dark color such as black. The combination of the directly reflected from the metallized area and the layer having a high absorptive capacity (black layer), prevents the detection of contrast differences so that the information generated detalizirovannoi area completely disappears on a copy of this protective element.

In accordance with another technology, known from the existing prior art in this field, use the laser or for direct marking substrate of the document, or for marking layer deposited on said substrate, and thus increasing the security features against counterfeiting, which cannot be reproduced using a Photocopying machine or scanner.

The task of the invention is to develop an improved method for printing an element of protection against forgery used, in particular, on various securities.

Another objective of the invention is to create an element of security for securities perfects the already known security elements and is obtained by using relatively simple and easy to implement method.

Another objective of the invention is to develop such a protection element, which is difficult to copy and tamper with the use of owls the temporal standard scanners and Photocopying devices, as well as other equivalent devices, but which can be easily printed using modern printing means.

To achieve these objectives the method according to the invention contains the steps outlined in paragraphs 1-5 of the claims, and the element of protection against counterfeiting in accordance with this invention is determined by the characteristics described in paragraphs 6-9 of the claims.

The invention will be better understood from the following description of several ways of its implementation, where references are given in Appendix figures, including:

figure 1 is a block diagram of a printing method, forming an element of protection against counterfeiting in accordance with the invention;

figure 2 schematically represents the first implementation method element of protection against counterfeiting in accordance with the invention;

figure 3 schematically represents a second method of implementation of an element of protection against counterfeiting in accordance with the invention;

figure 4 schematically represents the type of securities that contain an element of protection against counterfeiting in accordance with the invention.

Figure 1 in the form of a block diagram shows a variant implementation of the method in accordance with the invention. In the first stage, first of all, the substrate is ogliastro the document protection print some background, for example, using the offset printing method, known from the existing art. This background can be a solid color or multicolored, and such printing can be carried out using other methods known from existing in this field the prior art. In accordance with these methods, the picture that should be printed, is transferred from the cylindrical offset printing plate, smeared ink using paint rollers, printing dechelly cylinder, which in turn transfers a given pattern onto a substrate to be protected document such as a paper. In the patent FR 2222214 describes the offset printing method and the corresponding offset printing machine. The contents of this patent, in particular that part of it which relates to offset printing, used as a reference in the patent application. As another example, in patent US 6101939, the content of which is used as a reference in this patent application, describes another printing machine, using offset printing. The above background can be located on the entire surface protected securities, or may be only in some limited special area of this paper.

Then on top of the background image on Westlaw printing a translucent drawing using appropriate in this case printing technique and with the use of optically variable ink. Such printing ink having the property to create a shimmering image, contain metal particles and is applied usually in the form of an opaque pattern on securities, and mentioned the figure constitutes an element of protection against forgery. Indeed, due to the presence of metal particles these drawings, formed optically variable inks that change color depending on the angle at which they are considered, and these colors are based from the color of the paint and metal particles. Such ink is particularly effective for the formation of elements of protection against counterfeiting, because it is impossible to reproduce iridescent effect using colored photocopy devices or scanners, because in the process of copying the picture, formed optically variable inks, loses, in particular, its ability to flow, resulting copy is easily identified as a fake even to the naked eye.

Preferably translucent picture, formed optically variable paint, applied by screen printing. Such a printing method known in itself from the current level of technology. In accordance with this method be printing pattern is formed using a sieve, through which printing ink is applied on a substrate, such as securities is. For positive printing apertures of a sieve is closed outside the picture so that the ink passed through this sieve for forming the pattern on the substrate, whereas for the implementation of the negative print of the holes on the screen corresponding to the figure, closed and ink denotes only the outline of the figure, and the figure is created due to the lack of ink on the substrate. As an example, US patents 6109172 and US 5671671, in which is described a machine for the implementation of screen printing, introduced as references in the proposed patent application.

In the framework of the present invention provides the combination of a specific printing method such as screen printing method, as described above and in the aforementioned U.S. patents using optically variable printing ink fineness of the sieve used for screen printing, that is, the size of the holes of the strainer, is selected so that generated using optically variable printing ink willow pattern was translucent. Thus, on the one hand, you can see the background printed on the substrate, through the translucent figure, formed optically variable printing ink, and on the other hand, because this ri is UNOC performed using optically variable printing ink, it retains the properties of iridescence associated with the features of this optically variable ink. This provides the combination of two specific optical effects, which are quite difficult to qualitatively reproduce, on the one hand, the transparency of the picture, and on the other hand, the iridescence optically variable ink. In addition, there is a combination of at least three superimposed one upon the other colors (namely, the background color and the two colors optically variable ink), which changes depending on the angle at which consider the above figure, all of these characteristics together form a particularly effective element of protection against forgery.

In the case of using the screen printing method subtlety mentioned sieve has a value in the range from 180 to 230 lines per inch in each of the directions X and Y of the strainer. It is preferable to select the fineness of the sieve of about 230 lines per inch. There is also the possibility to adapt the fineness sieve functions used optically variable printing ink and, in particular, in function of the size of the metal particles contained in the paint, and in this case, the task is to get translucent imprint using optically variable ink. Optim is within these parameters can be performed simply in the course of the trial test print to delineate the size of the sieve mesh and therefore, the amount of paint applied in the printing process, to obtain the desired effect.

You can use other methods of printing, allowing the formation of a semi-transparent pattern formed optically variable printing ink, in particular a method of letterpress printing or heliogravure, or flexographic method, and the invention is not limited to the use of screen printing, and, as was mentioned above, the desired objective is to obtain a translucent figure with the use of optically variable ink. Mentioned printing methods known from the existing art, for example from the publication DE 3535993 for a method of flexography.

In the case of application of the method of letterpress printing or heliogravure it is preferable to use a printed form, with the subtlety of the basics in the range from 60 to 120 lines per centimeter, for which the angle of the framework may vary in the range from 0 to 75°and the depth of the engraved cells which has a value in the range from 10 microns to 50 microns. These parameters can be adapted to the type of optically variable ink and transparency of the picture, which is desirable. The refinement of these parameters can assests is sterile, in particular, the comparative tests.

In case of application of the method of flexographic printing use the cylinder anylox with lineature in the range of from about 100 to 120 lines per centimeter, and the depth of the cells has a value in the range from 30 microns to 50 microns. These parameters can be adapted to the type of optically variable ink and transparency of the picture, which is desirable.

In the third stage of implementation of the proposed method, which is optional, carry out dry embossed markings formed element of protection. This stage allows you to get additional and a prominent figure on the security feature created by blending some background translucent, printed pattern, and this additional relief is also impossible to reproduce by means of Photocopying or scanning. For the implementation of the embossed markings, you can use the classic method of printing with deep engraving on metal, omitting the use of printing ink to obtain a dry embossed markings. This relief pattern also can be seen only under some specific angle consideration of the protection element, in which in accordance with this method of implementation socatots the color effects, the chatoyancy of the picture and tactile effect created by the relief pattern.

The actual element of protection against counterfeiting in accordance with the invention will be described below with reference to figure 2-4.

Figure 2 schematically shows an element of protection against counterfeiting in accordance with the invention, an educated background 1, printed, for example, using the offset printing method and contains located next to each other repeating numbers "2000". On top of this background printed translucent figure 2, is made with the use of optically variable ink. Although the implementation of the mentioned figure 2 is optically variable inks, which usually gives an opaque print, used printing method is shown in figure 2 allows to obtain a translucent figure, resulting in a background of 1 is visible through the figure 2. As noted above, a printing method, which can be used to create such a translucent figure with the use of optically variable ink is a screen printing method, by which printed a sieve or stencil has specially selected subtlety, namely fineness in the range from 180 to 230 lines per inch.

So get the picture is to, having both properties are printed using optically variable printing ink drawing, with, in addition, the effect of translucency that allows you to see through it to the background on which this figure is printed.

Figure 3 shows schematically the various elements forming the element of protection against counterfeiting in accordance with the invention in a specific way to implement this element. Here, as mentioned above, there is a background 1 containing recurring digits "2000", and also contains a translucent figure 2, is made with the use of optically variable ink, through which you can see the numbers of background due to the effect of translucency of this figure. Here you can also distinguish a prominent figure 3, in this case representing a facial image that has been formed, for example, by dry embossed markings of this security feature.

Thus, in this case to offer protection against counterfeiting adds an extra level of protection in the sense that this item not only is translucent and has a protective characteristics of a picture made with the use of optically variable ink, but also contains a relief, you is ananny using dry embossed markings, all these properties of this element of protection is very difficult and even impossible to reproduce using modern Photocopying or scanning devices.

Figure 4 schematically presents some be protected against forgery of valuable paper 4, as an example, contains an element of protection in accordance with the invention. This valuable paper 4 in this case is a Bank ticket, containing in its lower-right corner element of protection against counterfeiting, which has in its composition the background 1, a translucent figure 2, is made with the use of optically variable ink, and dry embossed markings 3, which in the example presented on figure 3 in this patent application. It should be noted that the background 1 can be located on the entire surface of the given securities.

In addition, to print the background 1 and figure 2 can be used and other printing technologies, and referred to figure 2, it is important that he also represented the characteristics inherent in the design executed with the use of optically variable ink, and also had the effect of translucency.

1. The method of printing element of protection against forgery of securities, such as Bank notes and other similar documents on the substrate, Otley is audica fact, what does print some background on the substrate, printing a certain figure, at least partially covering the above-mentioned background, using opaque optically variable ink, and the said drawing is performed by using the screen printing method or using the flexographic method, or using a method heliogravure through, respectively, sieves, the anilox cylinder or the printing form, the fineness of patterns or frequency is selected so that the printed pattern was semi-transparent, and the background can be seen through this drawing.

2. The method according to claim 1, characterized in that the sieve used in the process of screen printing, contains from about 180 to 230 lines per inch along the X and Y directions of the strainer.

3. The method according to claim 1, characterized in that the cylinder anilox used to implement the flexographic printing technique, is lineature in the range of from about 100 to 120 lines per centimeter and the depth of the cells has a value in the range from 30 to 50 microns.

4. The method according to claim 1, characterized in that the printed form used in the implementation of the method heliogravure has a subtlety basis in the range of from about 60 to 120 lines per centimeter, for which the angle is changed in the range is from 0 to 75° and the depth of the engraved cells has a value in the range from 10 to 50 microns.

5. The method according to one of claims 1 to 4, characterized in that the above-mentioned background is printed using the method of monochrome or multi-color offset printing.

6. The method according to one of claims 1 to 4, characterized in that it additionally produce dry embossed markings of the protection element.

7. The element of protection against forgery of securities, such as Bank notes and other similar documents are placed on the substrate, characterized in that the background (1) printed on the substrate, and figure (2)at least partially covers the above-mentioned background, and figure (2) is translucent and formed with the optically variable printing ink in accordance with the method according to one of claims 1 to 4, in such a way as to leave visible background (1) through the specified pattern.

8. The element of protection against forgery according to claim 7, characterized in that the background (1) printed using the offset printing method.

9. The element of protection against forgery according to one of claim 7 or 8, characterized in that it further comprises a dry embossed markings (3).

10. Securities (4), in particular Bank card or other similar document, characterized in that it contains an element of protection against fakes in one of claims 7 to 9.



 

Same patents:

FIELD: printing.

SUBSTANCE: invention relates to protected documents, to the method of their fabrication and the paper base. The protected document, e.g. a currency note or a security, has a base with a thinner section making a transparent zone in the base. The said document has, also, a strengthening means to strengthen the said thinner section. Note here, that the said strengthening means contain, at least, one strip or a cover to protect the said thinner section.

EFFECT: higher protection of documents against forgery and higher life of the said documents.

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EFFECT: increased protection of paper or important documents from counterfeiting.

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FIELD: methods for identification and protection of objects from falsification.

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EFFECT: increased degree of protection of valuable object from falsification.

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Protective element // 2322358

FIELD: protective elements.

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FIELD: engineering of devices for ensuring protection from falsification.

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FIELD: information carriers, and methods for manufacture thereof.

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FIELD: information carriers, and methods for manufacture thereof.

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4 cl, 4 dwg

FIELD: polygraphy, method for manufacturing polygraphic product which requires identification and confirmation of authenticity, for example, during manufacture of securities and valuable documents.

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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.

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9 cl, 15 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.

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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

FIELD: polygraphy.

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.

10 dwg

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

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

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

21 cl, 11 dwg

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