Valuable document protected against forgery and method of determining its authenticity

FIELD: printing.

SUBSTANCE: invention relates to the field of protection of valuable documents against forgery. The valuable document comprises on its surface an invisible protective marking applied on the elongated section along the long side of the document, which is intended for the instrument reading. The protective marking has the property of selective absorption of the radiation in the range optical spectrum from 0.76 mcm to 10 mcm. The marking is wholly or partially located in the area of additional masking marking. The material of the latter has the property of re-radiation when exposed of the exciting radiation of the same spectral composition as the material of the protective marking, but is characterised with magnitude of afterglow time. The method of determining the authenticity of the valuable document comprises revealing the hidden security marking on the valuable document. The revealing of marking is carried out by registration of afterglow of its material after removal of the exciting radiation and/or by registration of the diffuse reflection of the material in the optical range of wavelengths from 0.76 mcm to 10 mcm. Violation of the predetermined information indicates full or partial forgery.

EFFECT: increase in the level of protection of the valuable document against forgery.

13 cl, 4 ex

 

The invention relates to the field of protection of valuable documents against forgery and is intended to be an instrument for determining the authenticity of the protected printing products, such as banknotes and forms of securities, and passports and travel documents.

Known counterfeiting of valuable documents, in particular banknotes and passports, which is only partial falsification by making unauthorized information, or, more commonly in the case of banknotes, the manufacture of compound documents. When this composite document, or a composite banknote, represents the plots of the original banknote glued or bonded in any other way with lots of counterfeit banknotes. Also known Scam, in which all segments of a composite banknotes are genuine, and the benefits of a counterfeiter is to make a profit by implementing the composite notes, consisting of three sections of banknotes and official refund for the remaining preserved parcels of banknotes, as a whole, but damaged, for example, partially burnt, banknotes.

To combat this type of fraud by matching serial numbers are located on the opposite fields coupon banknotes (if they, in turn, are not subjected to a partial forgery and yesterday I the dimension).

However, this method is not convenient and not always applicable, the corset control banknotes counting and sorting techniques. In addition, it is possible to prevent the method of forgery of a document, in which numbers will remain on the original sections of the document, not subjected to a partial forgery.

Known solution WO 0078556 A1, describing the document data is printed in invisible ink and visualized under the influence of an applied excitation radiation.

This solution is designed to determine the authenticity of a valuable document by applying the hidden information, and its subsequent identification using fluorescent radiation. If this is not protection from fraud entire surface of the document, or only the specified area exposed to the attacks of the forgers.

Also known solution WO 2004076192 A1, describes a method of marking and identification of the document using a unique sequence of invisible photoluminescent images.

This solution also does not fully solve the posed problem, since the described approach to a certain extent protects valuable document from forgery in General, but does not protect the document from a partial alteration. The decision also does not specify the possibility of mathematical identify a unique sequence of image the clusters with the aim of finding a partial forgery (or compilation) of the document.

Known solution EN 2452030 that describes how to determine fake compound document by analyzing different parts of the image, the mathematical relationships of the specified points of the document and the search of the gradient values of the final signal, which characterizes the degree of connection of the specified points of the document. If the gradient value of the links do not correspond to the normal values, is a fake document. This method is very tedious to implement, based on statistical methods, and is likely to give unstable results on worn and contaminated documents.

The closest to the proposed invention is the application US 2004169847 A1, describes a method of marking and identification of the document using fluorescent ink, using the sequence of graphical objects - patterns, each of which is characterized by the spectrum of the excitation spectrum of luminescence and afterglow kinetics.

This solution describes how to protect a document against forgery, comprising coating the surface of the document hidden fluorescent labeling, and the labeling contains the sequence of graphical objects, and is designed to determine the authenticity of the valuable document.

However, the task of improving the security of the valuable document. is the proposed method is not solved fully, because this invention does not involve solving the problem of protection from partial crafts valuable document by pasting a fragment fake or authentic document.

The objective of the proposed invention is to increase the level of protection of the valuable document from full or partial forgery. The technical result is ensured by the fact that the valuable document is protected from a fake by making unauthorized changes contains on its surface an invisible protective marking printed on the long stretch along the long side of the document represented by graphical elements with the given information intended for the instrument reading, and when replacing and/or offset of any of the fragments of the valuable document, the information in labeling violated, indicating partial or complete forgery of a valuable document. This result is due to the fact that the protective marking, having the property of selective absorption of radiation in the optical range of the spectrum in the range of 0.76 to 10 μm, a fully or partially located in the region of an additional masking marking material which has the property of reemission preferably in the same part of the optical spectrum when exposed to excitation radiation of the same specification of the Central structure, as the material of the protective marking, but differs by the amount of time the afterglow.

Preferably, the material of protective marking has the property of re-emission in the optical range of the spectrum in the range from 0.3 μm to 2.5 μm, when exposed to radiation in the spectral range from 0.1 to 10 microns.

Preferably, the material of protective marking has the property of afterglow in the time range from 10-7with up to 10 hours after removal of the exciting radiation,

Preferably, the material of protective marking invisible in normal conditions, has a reversible, disappearing over time, the property re-emission or absorption of radiation, preferably in the visible part of the optical spectrum when the temperature influence in the range from -100°C to +100°C,

Preferably, the material of protective marking invisible in normal conditions, has a reversible, disappearing over time, the property re-emission or absorption of radiation, preferably in the visible part of the optical spectrum after exposure to radiation spectral range from 1 μm to 10 μm.

Valuable document may be a banknote, a passport, a travel document, driving licence, identity card, a security paper, a plastic card.

Protective marking is preferably printing pic is BOM, preferably the method of inkjet printing.

Protective marking may be performed using laser engraving, by selective removal plots coatings printing method

Usually protective marking is made in the form of geometric shapes, guilloche elements, graphics, alphanumeric characters, dashes constant and/or varying width, forms the encoding or represents any combination of all the above,

The document may be a banknote with a protective marking that contains information about the serial number and designed for fast reading on counting and sorting equipment,

The technical result is also provided a method of determining the authenticity of a valuable document described above according to which make the detection of hidden protective marking on the valuable document, the analysis of the shape and arrangement of geometric shapes, the definition of the specified dependencies and/or analysis of the information contained therein, and the detection of hidden protective marking on the valuable document is produced by registering the afterglow of her material after removal of the excitation radiation and/or by recording the ratio of the diffuse reflectance of the material in the optical wavelength range from 076 μm to 10 μm, if this violation information indicates a full or partial forgery of the document.

Thus, the claimed valuable document such as a banknote or a passport or travel document contain an invisible protective mark or part of a document subjected to attack, either on the entire surface of the document. Information about the authenticity of the document is provided a given set of graphical images of various geometric shapes, sizes and locations. After the forgery of a document by changing its fragment, or the replacement of one genuine fragment to another, information about the authenticity is destroyed, and cannot be read instrument methods, which indicates to either full or partial falsification of this document.

Determining the authenticity of a valuable document, which is characterized by a stated set of features may include the analysis of the shape and arrangement of geometric shapes by establishing mathematical relationships between them, demonstrating the authenticity and/or integrity of the document, the breach specified according to the evidence of the forgery of the document.

Example 1.

A valuable document in the form of banknotes, on the front side by way of inkjet printing has suffered a hidden protective marking using Lumi is ascentage connection SrAl 2O4:Eu,Dy with green luminescence under UV radiation in the wavelength range of 330-370 nm and characterized by the time of the afterglow 10 seconds, and made in the form of a barcode PDF417 format, containing the serial number of this bill. On top of this protective marking applied additional masking marking in the form of random bands, also with green luminescence under UV radiation, and is characterized by the time of the afterglow 10-6(1 microsecond).

When observing the banknote under the influence of UV radiation is observed chaotic pattern formed by the superposition of (overlay) image protective marking and camouflage markings, and considering information protective marking is not possible. When turning off the exciting UV radiation, image masking marking disappears after 1 microsecond and 10 seconds is observed only luminous image protective marking is available to determine the reading device reads the bar code.

Example 2.

The method of determining the authenticity of a valuable document, including the device, a barcode reader (scanner), a stopwatch and a UV illuminator. The validation is performed in three steps.

1. Irradiation valuable document of UV radiation. Ska the EP is unable to read information from a valuable document, since the information structure protective marking violates the mask marking.

2. Off the source of UV radiation. Within 10 seconds, the scanner reads the information contained in the bar code PDF417 format and represents the serial number of the valuable document, if the document is authentic.

3. After the expiration of 10 seconds luminous image protective marking disappears, and the scanner can't read the information.

The decision about the authenticity of the document is taken as positive run at the same time the three above conditions. Otherwise, valuable document is recognized either partially or completely falsified.

Example 3.

A valuable document in the form of banknotes, on the other side of which method of inkjet printing inflicted hidden protective marking is performed using inorganic compounds SbSn, invisible in normal conditions and with the absorption of optical radiation in the wavelength range of 1200-1500 nm, made in the form of a barcode that contains the serial number of the banknote.

The specified bar code applied over the entire surface of the banknote along its side length, and include edge regions of the banknote and its coupon fields.

When observing the banknote under normal conditions protective marking does not manifest itself (not visible to the naked chap who ohms).

When using the barcode scanner, operating in the wavelength range of 1200-1500 nm, reads information about the serial number of the banknote, that proves its authenticity.

When you try to rig the bill by gluing of the component parts, the invisible bar code with serial number cannot be read, indicating full or partial counterfeit banknotes.

Example 4.

The method of determining the authenticity of a valuable document, including the device, a barcode reader (scanner), operating in the infrared optical region of wavelengths in the range of 1200-1500 nm.

The method includes the lighting of the valuable document radiation in the range of 1200-1500 nm using a semiconductor laser, moving the laser beam over the surface of the document due to the tilting of the scanning prism and reflected from registration document radiation in time.

The scanner reads the information contained in the bar code, and represents the serial number of the valuable document, if the document is authentic.

Otherwise, valuable document is recognized either partially or completely falsified.

1. A valuable document that is protected from a fake by making unauthorized changes, containing on its surface an invisible protective marking printed on the longest is castac along the long side of the document, represents a set of graphic elements with the given information intended for the instrument reading, characterized in that the protective marking has the property of selective absorption of radiation in the optical range of the spectrum in the range of 0.76 μm to 10 μm, and a protective marking is fully or partially located in the region of an additional masking marking material which has the property of re-emission when exposed to excitation radiation of the same spectral composition as the material of the protective marking, but differs by the amount of time the afterglow.
2. Valuable document according to claim 1, characterized in that during the replacement and/or removal of any of the fragments of the valuable document, the information in labeling violated, indicating partial or complete forgery of a valuable document.

3. Valuable document according to claims 1 and 2, characterized in that the material of the mask marking has the property of reemission preferably in the same part of the optical spectrum, as the material of the protective marking.

4. Valuable document according to claims 1 and 2, characterized in that the protective marking has the property of afterglow in the time interval from 10-7with up to 10 hours after removal of the exciting radiation.

5. Valuable document according to claims 1 and 2, characterized in that the protective material mA is Kirovka has the property of re-emission in the optical range of the spectrum in the range from 0.3 μm to 2.5 μm, when exposed to radiation in the spectral range from 1 to 10 microns.

6. Valuable document according to claims 1 and 2, characterized in that the material of the protective marking is invisible in normal conditions, has a reversible, disappearing over time, the property re-emission or absorption of radiation, preferably in the visible part of the optical spectrum when the temperature influence in the range from -100°C to +100°C.

7. Valuable document according to claims 1 and 2, characterized in that the material of the protective marking is invisible in normal conditions, has a reversible, disappearing over time, the property re-emission or absorption of radiation, preferably in the visible part of the optical spectrum after exposure to radiation in the spectral range from 1 μm to 10 μm.

8. Valuable document according to claims 1 and 2, characterized in that it is a banknote, a passport, a travel document, driving licence, identity card, a security paper, a plastic card.

9. Valuable document according to claims 1 and 2, characterized in that the protective marking is made in the printing method, preferably by way of inkjet printing.

10. Valuable document according to claims 1 and 2, characterized in that the protective marking is performed using laser engraving, by selective removal plots coatings printing is a manual.

11. Valuable document according to claims 1 and 2, characterized in that the protective marking is made in the form of geometric shapes, guilloche elements, graphics, alphanumeric characters, dashes constant and/or varying width, forms the encoding or represents any combination of all the above.

12. Valuable document according to claims 1 and 2, characterized in that the document is a banknote with a protective marking that contains information about the serial number and designed for fast reading on counting and sorting techniques.

13. The method of determining the authenticity of a valuable document, as described in claims 1 to 12, comprising the detection of hidden protective marking on the valuable document, the analysis of the shape and arrangement of geometric shapes, the definition of the specified dependencies and/or analysis of the information contained therein, and the detection of hidden protective marking on the valuable document is produced by registering the afterglow of her material after removal of the excitation radiation and/or by registering the diffuse reflectance of the material in the optical wavelength range of 0.76 μm to 10 μm, and the violation information indicates a full or partial falsification.



 

Same patents:

FIELD: physics.

SUBSTANCE: method of inspecting paper with optical protective marks on banknote threads involves synthesis of a flat optical element with an asymmetric microrelief. An asymmetric image is formed in an optical element to allow automatic inspection, invariant to the shift of the banknote and turning thereof within 10 degrees when the protective mark is illuminated with a laser beam perpendicular to the plane of the banknote. The image is in form of bright sections, parallel to the direction of movement of the banknote in the channel of a counting and sorting device, lying in the focal plane, parallel to the plane of the banknote, or in planes Q1 and Q2, each inclined to the plane of the banknote by an angle α, which is less than 60 degrees. The line of intersection of planes Q1 and Q2 is parallel to the direction of movement of the banknote. The control feature for identification is the distance from each of the sections to the laser beam. The apparatus for inspecting paper with optical protective marks on banknote threads includes a diode laser, a detection system, an electronic unit for recording information from a line of photodiodes and an electronic unit which performs automatic inspection. The diode layer emits a laser beam perpendicular to the plane of the banknote.

EFFECT: high protection of optical marks from forgery, high reliability of identification and invariance of the inspection procedure at high speeds of the banknote in the channel of a counting and sorting machine.

3 cl, 16 dwg

FIELD: textile, paper.

SUBSTANCE: sandwich product protected against forgery includes sheets of paper with protective elements, which are saturated with a polymer binding agent, and external polymer layers. Sheets of paper are saturated in molten thermoreactive or thermoplastic polymer throughout the volume and surfaces of each sheet are coated with a polymer layer; besides, the product surfaces are of a relief type. A manufacturing method involves saturation of sheets of paper with protective elements with the molten thermoreactive or thermoplastic polymer, or with their mixtures, drying with partial polymerisation, assembly of a pack of saturated sheets, hot pressing lamination with simultaneous formation of surface relief and products of the specified geometrical shape.

EFFECT: producing substitutes of currency notes based on sandwich plastic materials containing protective elements and having high indices of stability to aggressive action and mechanical wear during operation.

8 cl, 2 ex

FIELD: information technology.

SUBSTANCE: graphic elements are deposited using printing techniques on one or both sides of the medium, wherein mutual arrangement thereof is such that said elements form an image having an optically variable effect. The graphic elements are deposited by scratch-off printing while meeting the following conditions: engraving groove depth should not exceed 14 mcm and the width of the graphic elements should be of the order of the thickness of the data medium. The obtained data medium retains its flatness. The thickness of the paint layer is in the range of 3 to 10 mcm.

EFFECT: high degree of protection of articles while obtaining a novel optically variable effect or movement effect, high manufacturability and low cost of the protective element.

8 cl, 10 dwg, 2 ex

FIELD: textiles, paper.

SUBSTANCE: method of papermaking with multi-tone watermark lies in the use for casting and moulding of the paper web on a papermaking machine of the relief mask representing a partially water-permeable moulding element. The element is formed on the surface of the cylinder forming fabric, or on the dandy roll of the fourdrinier former. The mask has a variable height of the image area of the watermark, created by the relief stamping of the fabric, with electrotype and/or conjoint stamping of the fabric and electrotype and/or use of several layers of the electrotype. Individual, successive layers of electrotype in the mask can have openings which are different in the diameter and the density of location. The mask is assembled out of several layers of perforated plates of metal or plastic plates or composite materials. The paper and printing product made by the above method is claimed, which are protected against forgery.

EFFECT: expansion of technological capabilities of the method of production in the paper of the watermark with the increase in the capacity of the watermark as an element of protection against forgery.

7 cl, 10 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to making of protective element having substrate with at least one opening covered on one side by translucent film. Said film is applied over solid translucent coat on the substrate top and bottom sides. Note here that coat forming material is applied in large amount in zone of said opening or said opening is filled with filler completely prior to coat application.

EFFECT: ruled out fouling nearby opening edges, stability of protective element at flexure.

7 cl, 4 dwg

Covered document // 2439235

FIELD: textiles, paper.

SUBSTANCE: covered document contains a substrate, visible authenticating element, as well as a control area which boundaries are at least partially defined by the authenticating element, and the authenticating element, at least partially restricts the contour of the control area and/or is used for positioning the control area. The control area has many identifying elements that differ from the specified authenticating element, and the control area carries the identifying information displaying at least one feature of identifying elements, in particular spatial or physical feature. Identification information is associated with the feature of the control area, in particular spatial and/or physical feature, at that the said information relates to one spatial and/or physical feature of identifying elements. Identifying elements are randomly dispersed within the control area and/or made for emission of a particular signal at the external, in particular optoelectronic, electromagnetic, electrical, magnetic, thermal or acoustic influence.

EFFECT: increased degree of protection of documents against forgery and counterfeiting, improvement of identification while automatic reading of documents.

59 cl, 18 dwg, 5 ex

FIELD: textiles, paper.

SUBSTANCE: method of wet manufacturing a fibrous layer on a forming fabric of a paper machine, having a pile of fabrics. Wherein the said pile of fabrics includes superimposed front fabric and at least one subfabric, and the fibrous layer contains at least one element of an assigned thickness. At that the method includes a stage of forming the said layer by pulp dewatering on the forming fabric, which pile of fabrics has an area of low dehydration, compared to the first subfabric, at a level of at least one subfabric and/or under the front fabric. And the area of low dehydration meets the location of the said element. The group of inventions also relates to a forming fabric, to a method for its manufacture, to a protective sheet obtained in the above manner, and to covered document obtained from the protected sheet.

EFFECT: obtaining the fibrous layer with protective elements with lack of apparent thickening on its surface.

54 cl, 8 dwg

FIELD: textile, paper.

SUBSTANCE: invention relates to a flat protective element of comparatively small size, for instance, to a pad, and also to a material that contains such elements, to secured documents made from such material, and to the method of manufacturing of these elements. The specified protective element comprises at least one through hole.

EFFECT: higher extent of documents counterfeit protection, and also provision of a stronger attachment of protective elements to the substrate.

26 cl, 5 dwg, 2 ex

FIELD: textile, paper.

SUBSTANCE: counterfeit-proof paper comprises a transparent, at least at some areas, film element, which is freely accessible, at least at some areas, via counterfeit-proof paper. The film element is connected to counterfeit-proof paper by means of an adhesive layer, which is highly transparent and clear in the region of freely accessible areas. The adhesive layer for at least one of freely accessible areas includes a groove, which substantially covers this area surface. The groove in the form of a freely accessible area has an adhesive layer, which is 1-2 mm less or 1-2 mm more than this area. The adhesive layer in the area of at least one of freely accessible areas, apart from the groove, has an ornamental area, on which the adhesive layer is applied in the form of ornaments, symbols or a code. Also a film elements is proposed, and a method to manufacture counterfeit-proof paper or a valuable documents (its version).

EFFECT: improved counterfeit protection of paper.

70 cl, 20 dwg

FIELD: textile, paper.

SUBSTANCE: structure is intended for secured and/or valuable documents. It contains at least one substrate of fibre material, optionally, at least one surface layer applied onto one surface of substrate. At the same time the specified surface layer comprises coating or surface pigments and at least one binder. It also contains multiple various elements of substrate and/or optionally of a surface layer, distributed in a random manner inside the substrate and/or optionally the surface layer, and at least one portion of authenticating and/or identifying information is related to at least one spatial and/or physical criterion of at least part of specified various elements. Also a document, a packing facility and a sheet material are proposed with application of the above-specified structure. A method to make such a structure, its versions and a method to authenticate and/or identify the structure are also proposed.

EFFECT: improved extent of protection.

31 cl, 12 dwg

FIELD: information technology.

SUBSTANCE: data medium has a substrate having a portion with a distinctive feature formed by a family of curves which includes a plurality of arched and/or diverging slit lines. Inside the portion with a distinctive feature there is an identification mark which is configured for visual or computer recognition and is a pattern, symbols or code. Said identification mark is formed by a portion of the substrate which does not have slits and has a family of marking curves, which includes a plurality of marking lines connected to the slit lines outside the identification mark.

EFFECT: high degree of counterfeit protection.

22 cl, 13 dwg

FIELD: printing.

SUBSTANCE: invention relates to a method and also the device for colour individualisation of security documents, as well as to security documents for colour individualisation with the body of the document. The starting materials are located inside this document body, which by localised targeted energy input are excited to create or modify the nanoparticles of different type and/or local concentration while the colour perception of the nanoparticles depends on their type and/or local concentration. For individualisation of such security document with such document body, the energy is injected locally purposefully into the place where in the document body the colour perception should be achieved in order to keep the individualising information through the achieved colour perception. At that, to achieve the colour change the dependence of absorption of light by nanoparticles on the wavelength is modified, which is not only the change in the absorption efficiency in the absorption spectrum, the colour change is due to the quantisation effect of the nanoparticles, and the colour perception is set by the energy input.

EFFECT: proposed invention provides the ability of colour individualisation of the document.

21 cl, 5 dwg

FIELD: information technology.

SUBSTANCE: graphic elements are deposited using printing techniques on one or both sides of the medium, wherein mutual arrangement thereof is such that said elements form an image having an optically variable effect. The graphic elements are deposited by scratch-off printing while meeting the following conditions: engraving groove depth should not exceed 14 mcm and the width of the graphic elements should be of the order of the thickness of the data medium. The obtained data medium retains its flatness. The thickness of the paint layer is in the range of 3 to 10 mcm.

EFFECT: high degree of protection of articles while obtaining a novel optically variable effect or movement effect, high manufacturability and low cost of the protective element.

8 cl, 10 dwg, 2 ex

FIELD: printing.

SUBSTANCE: invention relates to a method of manufacturing a security or valuable document, which includes the following steps: B) multilayer material is produced, which comprises a paper substrate, a masking layer provided on the paper substrate in the masking area, and marking substance modified by laser radiation, provided in the marked area, at that the marked area covers the masking area, and L) the multilayer material in the marked area is subjected to laser action in order to create the negative signs in the masking area simultaneously in register and discolored signs on unmasked areas of the marked area. At that before performing the step L) on the masking layer at least in the marked area the recesses are made in the form of patterns, signs or a code.

EFFECT: invention provides a high degree of protection against forgery.

25 cl, 22 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to object formed by stencils of concealed image applied on valuable printed paper, said, bank notes, stock, etc, to be protected against counterfeit. Proposed object comprises, at least on a part of substrate surface, a concealed image area located along at least a part of said concealed image and background area located against the background of said concealed image area and said outline area. In concealed image area, multiple first elements of convex or concave profile are arranged at first spacing in first direction. In background area, multiple first elements are arranged at first spacing in first direction in phase that differ from that of first elements in said concealed image area. In outline area, multiple first elements are arranged at first spacing in first direction in phase that differ from that of first elements in said concealed image or background area that adjoins said outline area. In concealed image area, background area and outline area, multiple second elements feature coloring that differs from that of substrate and are located at second spacing in second direction.

EFFECT: better protection against counterfeit.

19 cl, 80 dwg, 11 ex

FIELD: physics, computer engineering.

SUBSTANCE: invention relates to a data medium with a printed magnetic protective feature and a method of making such a data medium. The method of making the data medium involves carrying out a first step where a data medium for forming at least part of the protective feature is printed with printing ink which contains a certain amount of a magnetic substance in form of a magnetic paste mixed with the basic ink with para- and/or ferromagnetic particles At the second step, on a least one separate area printed by the printing ink, the amount of the magnetic substance is reduced by removal, respective demagnetisation of at least a portion of the magnetic particles.

EFFECT: invention enables to obtain a data medium with a machine-readable protective feature which is impossible to detect visually, thereby providing high protection from counterfeit and falsification.

21 cl, 15 dwg

FIELD: printing.

SUBSTANCE: method of manufacturing a polymeric multilayer composite comprising several layers of polymer, at least one of which contains the laser-sensitive component, comprising the stages: A) at least on one of the polymeric layers by ink-jet method the first personalised information sign is applied as a coloured printed layer obtained by ink-jet method; B) the polymeric layer with the coloured printed layer obtained by ink-jet method, which is a polycarbonate layer, is then combined with other polymeric layers, at that the polymeric layer with the coloured printed layer obtained by ink-jet method is located between two other polymeric layers; C) in the polymeric multilayer composite obtained at the stage B) by means of laser engraving, the second personalised information sign is inserted. At that the printed layer obtained by ink-jet method comprises a binder which is the polycarbonate derivative which contains functional structural carbonate units of formula , where R1 and R2 independently of each other represent hydrogen, halogen, C1-C8-alkyl, C5-C6-cycloalkyl, C6-C10-aryl and C7-C12-aralkyl; m is an integer from 4 to 7; R3 and R4 are individually selected for each X and independently of each other from hydrogen or C1-C6-alkyl; X is carbon, and n is an integer greater than 20, providing that in at least one atom X, R3 and R4 simultaneously mean alkyl.

EFFECT: proposed invention provides protection against manipulation of colour personalised information signs

23 cl, 4 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to magnetic compositions used as ink or toner for producing pigmented magnetic materials. The magnetic composition contains particles having a core made of magnetic material and a coating surrounding the core. The pigmented magnetic layer on the substrate has a Hunter Lab colour scale L-value of at least 50. The coating of each particle is sufficiently opaque so as to completely conceal the colour of said core or an additional coating under said coating. Described also is a method of forming a pigmented magnetic layer, the obtained articles, e.g. banknotes, the protective property of the magnetic layer for the banknote.

EFFECT: disclosed magnetic compositions contain particles which are coated such that they look white, substantially white or coloured, while providing the desired magnetic properties and opening up new possibilities of producing corresponding magnetic layers on substrates.

24 cl, 2 ex

FIELD: textiles, paper.

SUBSTANCE: method of manufacturing a sheet material comprising at least two superimposed fibrous layers, including the following steps: the first paper layer is produced, having at least one elongated zone of zero thickness, by means of filtering of the aqueous suspension of fibers on the grid of the first drum or farmer. And in the process of formation of the said layer, a transparent element is at least partially inserted into it. And the said at least partially transparent element is located at least in the said elongated zone of zero thickness, the second paper layer is produced on the grid of the second drum to form at least one recess in the said second layer, both layers are combined so that at least one recess of the second layer is placed in front of the said at least one elongated zone of zero thickness of the first layer comprising at least partially transparent element, with the formation of the window at this time, and the structure thus obtained is dried.

EFFECT: improvement of the method.

43 cl, 7 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of sheet material composed of, at least, two superimposed fibrous layers. Proposed method comprises the following steps. First paper layer is made with, at least, one elongated zero-thickness zone by filtering water suspension at first drum screen. Second paper layer is made at second drum screen to make, at least, one recess in second layer. At least, one transparent element is arranged between two still wet layers to bind both layers so that said recess of second layer, one said transparent element and said elongated zero-thickness zone of first layer are opposed. Made structure is dried.

EFFECT: sheet material with protective element without structure peeling.

43 cl, 6 dwg

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

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

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

21 cl, 11 dwg

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