Protection-attribute combination for important documents

FIELD: important documents with protective attributes, combination of matters with two automatically controlled properties for protecting important documents against counterfeit, methods for making such documents and methods for testing authenticity of charred matters and ash.

SUBSTANCE: important document, mainly bank note or person certificate is characterized by use at least of two luminophors whose luminescent properties may be automatically and individually monitored. First luminophore irreversibly losses its luminescent properties at first temperature. Second luminophore irreversibly losses its luminescent properties at second temperature. First and (or) second temperature exceeds natural temperature of burning important document. It allows to identify document according to itself and also according to its ash and prevents possibility of illegal regeneration of materials designed for protecting against counterfeit in order to make duplicates of documents.

EFFECT: enhanced reliability of identifying important documents.

29 cl

 

The present invention relates to the combination of substances with two automatically controlled properties to protect valuable documents from forgery, use of this combination of substances for the protection of valuable documents against forgery, valuable document with two security features, each of which has its automatically controlled physical property, to a method for producing such valuable documents, as well as authentication method charred material or ash.

In the context of the present invention for the valuable documents include all documents that must be protected from tampering. Such documents include primarily banknotes, securities (shares), identity cards and badges, smart cards and other Similar documents can be made on the basis of cellulose, cotton fiber, or based on plastic or on a mixed basis of many such materials.

Valuable documents to protect them against forgery provide various security features, to forge which is almost impossible or possible at extremely high cost, essentially not comparable with the cost of the document. As such protective features may be used, for example, phosphors, magnetic particles and other substances, to discover that mo is but on the basis of their particular physical properties. Automatically detectable protective signs indicate those characteristics, which are mainly intended for automatic control of unlike signs, designed to test a person primarily on visual inspection. The latest security features, designed for human verification include, for example, watermarks, gelosi, the printed image obtained by metallographic printing, etc. For automatic control of the most suitable, for example, magnetic materials. Such materials may be added in the form of magnetic particles to the material of the securities at the stage of its manufacture. Such magnetic particles can be either hard magnetic, i.e. to create a permanent magnetic field after magnetization, or magnetic, i.e. to detect the magnetization only when exposed to an external magnetic field.

In the prior art it is known also made extensive use of fluorescent labels as automatically detectable security features. There are fluorescent substance capable of emitting characteristic radiation only under the influence of the excitation radiation, and phosphorescent substances, which are able to luminesce for a long period of time after cessation of excitation. Various properties of luminophore which can be used as a protective sign, for example, the spectra of excitation and emission, visibility/invisibility of radiation, possible duration of the afterglow and the half-period of its decay, narrow/broadband radiation. Using all these various evaluation criteria can further increase the degree and reliability protect documents against forgery, because the forger does not know what property is subject to control and should be so they reproduced.

Often used as phosphors capable of emitting radiation only in a very narrow range of wavelengths, for example compounds of rare earth elements. The advantage of such phosphors compared with phosphors emitting radiation in a wide wavelength range, is that their radiation has a characteristic spectrum in comparison with the spectra of radiation of other substances, making such phosphors should be considered more reliable for automatic control of authenticity of documents. To increase the reliability of protection of documents against forgery using substances, radiation which lies in a wide range of wavelengths, the emission spectrum can be modified in a characteristic way, as described, for example, in DE 3020652.

In addition, it should be noted that conducting forensics promotes the use of protection to the instruments substances, discover who is still possible even after the burning of the document, so that in fact it was possible to establish the identity of the changed drastically remaining after combustion of the remainder of the original document. On the other hand, it is necessary to prevent the possibility of regenerating used to protect valuable documents from forgery substances contained in the remaining after the combustion of such valuable documents ashes, and use of these substances for the manufacture of forged documents.

Based on the foregoing, the present invention was used to find a solution that would uniquely identify a valuable document for both himself and his ashes, but would exclude the possibility of illegal regenerating designed to protect documents from tampering substances for the manufacture of fake duplicate of the valuable document.

This objective of the invention is solved by the proposed therein a valuable document, first of all bills or ID, characterized by the presence of at least two phosphors, luminescent properties which are amenable to automatic control independently of each other, wherein the first phosphor irreversibly loses its fluorescent properties when the first temperature, and vtoro the phosphor irreversibly loses its fluorescent properties when the second temperature.

According to the invention the first and/or second temperature exceeds the combustion temperature of the valuable document.

The first temperature may be less than or equal to own the combustion temperature of the valuable document, and the second temperature exceeds the combustion temperature of the valuable document.

It is important to note that the first and/or second temperature exceeds the combustion temperature of the valuable document, but less than the temperature of destruction of the valuable document.

The second temperature may exceed the temperature of destruction of the valuable document.

Luminescent properties of the phosphors used in the valuable document according to the invention, should be capable of automatic control in the same place, but independently from each other.

In a preferred variant of the invention, the self-burning temperature of the valuable document is from 400 to 600°C, preferably about 500°and the temperature of the destruction of the valuable document is at least 1000°C.

Preferably, as a first phosphor to use inorganic phosphor, the second phosphor is an organic phosphor.

In a preferred embodiment, the organic phosphor is methylene blue.

However, there is an option when the first and second l is minatory are in each case inorganic phosphors.

Inorganic phosphors in accordance with the invention contain crystalline substances, in the lattice of the matrix which contains dopant rare earth elements.

According to the invention at least one of the luminescent properties present on or in the protective heathered yarns or fibers valuable document, or at least one of the luminescent properties is present in at least one printing ink, which sealed a valuable document, or at least one of the luminescent properties present in the material basis of the valuable document.

Material-basis securities document can be mainly paper, preferably paper-based cotton fiber, but may be plastic or polymeric material.

The objective of the invention is also solved with the help of its proposed combination of substances for the protection of valuable documents against forgery, consisting of at least two phosphors, luminescent properties which are amenable to automatic control independently of each other, wherein the first phosphor irreversibly loses its fluorescent properties when you first temperature and the second phosphor irreversibly loses its fluorescent properties when the second temperature. According to the invention the first and/or second temperature exceeds the temperature is ur burning valuable document.

In this combination of substances of the first phosphor is an inorganic phosphor and the second phosphor is an organic phosphor.

Organic phosphor in the preferred embodiment is methylene blue.

But not excluded options, when the first and second phosphors are in each case inorganic phosphors.

Inorganic phosphors contain crystalline substances, in the lattice of the matrix which contains dopant rare earth elements.

Preferably rare earth element selected from the group comprising neodymium, ytterbium, praseodymium, erbium, and holmium.

Preferably, the matrix lattice contained elements selected from the group comprising chromium and iron.

It should be noted that in the preferred embodiment, the second phosphor is ZnS:CuCl, and the first phosphor is Y3Al5About12:b.

The objective of the invention is also solved even with its proposed method of manufacturing valuable documents, namely, that valuable document supply inextricably associated first and second phosphors.

Thus preferably at least one of the phosphors to enter or be incorporated as an additive in the security thread, heathered fiber or material most valuable document or primes is to to printing ink which sealed a valuable document, or the first and second phosphors to recycle in their mix.

The objective of the invention is solved with the help of its proposed method validation charred or burnt material, which presumably earlier was a valuable document, which according to the invention is that subjected to testing luminescent properties, from memory depending on the temperature, the effects of which have been valuable document, call the stored reference or control value, these reference or control values are compared with the measured values and determine whether it was the temperature at which charred or burned valuable document, its own temperature combustion or temperature of its destruction.

Thus, the basic idea of the invention lies in the fact that to achieve mutually conflicting goals can be achieved through the use of different physical or chemical properties that can be controlled independently from each other and which are at different temperatures change or disappear. In accordance with this proposed invention is a valuable document has at least two amenable to automatic control of the physical or chemical properties which can be detected independently from each other,in this valuable document loses at least one automatically controlled properties at a first temperature value, and at a second temperature substantially different from the first temperature, under certain conditions, lose and other automatically controlled property.

Preferably, the controlled properties manifested in the same place and/or were based on the same physical or chemical phenomenon or effect. If we are talking about properties that are not based on the same physical phenomenon, such properties may be different properties of a single controlled substances at different temperatures disappear at least partially or change so that the change can be detected by the measuring means. Otherwise, it is preferable to apply two substances, each of which has one of the controlled properties.

When selecting automatically controlled properties according to the invention must further be considered that the combustion of valuable documents is possible in two temperature ranges. The first type includes the self-combustion temperature, i.e. the temperature at which valuable document such as a banknote, burned with a lighter, burning in atmospheric conditions, and the second interval is the average temperature of the destruction of valuable documents in high temperature furnaces. After the it case, valuable documents, which shall be subject to withdrawal from circulation due to the high degree of contamination or deterioration, destroyed relevant institutions issuing in high temperature furnaces with blowing oxygen or in similar conditions. Normal temperature destruction of valuable documents is approximately 1000°and more. In contrast, self-burning temperature of the valuable documents ranges from 400 to 500°C, considerably lower than the specified temperature destruction.

Because the volumes of destroying valuable documents are quite large, according to the invention in each case it is necessary to exclude the possibility of regenerating unauthorized produced after combustion residues destroyed valuable documents designed to protect documents from tampering substances that would forge a genuine valuable documents.

In accordance with this used according to the invention is automatically controlled properties (E1E2etc) must meet one of the following conditions, with T1indicates own combustion temperature, and T2mean temperature destruction.

Option 1

Valuable document loses the first property E1below the temperature T1and preserves the property of E2at temperatures above T1and T2.

PR is such a combination exists the opportunity to confirm on the basis of thermostable monitored property E 2the identity of the ashes of the burnt genuine valuable document. However, it is impossible to draw any conclusions regarding the conditions of combustion, i.e. there was a combustion of the document in atmospheric conditions or at a temperature of destruction.

Option 2

Valuable document retains the properties of E1and E2higher temperature T1and it loses the property of E1below the temperature T2keeping in the same time, the property E2at temperatures above T2.

In this case, based on the properties of E2you can not only set the ownership of the ashes of the burnt genuine valuable document, but also to determine the conditions of combustion of the valuable document. If ash finds both of the E1and E2then a valuable document was burned in atmospheric conditions, and Vice versa, if ash finds only property E2it suggests that the valuable document was exposed to at least the temperature of the destruction.

3-option

Valuable document loses the property E1below the temperature T1and the property E2below the temperature T2.

In this case, the ash is a valuable document, which was burned at a temperature of destruction, does not detect any property E1or property of the E2. Thus, the ash generated after the official destruction of the dock is ment, remains neutral regarding protective characteristics. If the ashes, as before, finds the property E2this indicates combustion valuable document in atmospheric conditions.

4 option

Valuable document retains the properties of E1and E2higher temperature T1and lose both properties below the temperature T2.

In this case, it is also possible to establish the fact that the combustion of the document in atmospheric conditions, and therefore creates the opportunity to confirm the authenticity of erroneously burned documents, which if necessary can be replaced with undamaged documents. If the ash does not detect any of the properties of E1and E2in this case, it is impossible to say that was destroyed genuine valuable document.

In the proposed invention the solution is possible using a variety of effects, such as luminescence, magnetism, conductivity, chemical reactions. Fundamental to the invention only the possibility of analysis of at least two physical or chemical properties, at least one of which is irreversible changes or disappears completely above a certain first temperature and the second property above the first temperature remains unchanged.

According to one preferred variant is now of carrying out the invention a valuable document can be provided with two phosphors, who lose their fluorescent properties at different temperatures. Most suitable in this respect, combinations of organic and inorganic phosphors, because organic phosphors lose their luminescence property already at low temperatures, whereas a large number of inorganic phosphors are thermostable.

As an example, volatile organic phosphors can be called various dyes such as methylene blue, rhodamine, entrain, gynazole, benzothiazin etc. and also chelates and acetonate rare earth elements. An example of a stable inorganic phosphors that can be used according to the invention are crystalline substances, in the lattice of the matrix which contains dopant rare earth elements. As such crystalline substances, it is preferable to use calcium tungstate, yttrium iron garnet, yttrium Vanadate, oxysulfide yttrium, etc. To encode invisible marks, the wavelengths of radiation which lies in the infrared region of the spectrum can be used such rare earth elements such as neodymium, ytterbium, praseodymium, erbium or holmium, preferably embedded into the crystalline lattice of the matrix chromium or iron-containing substances. Thus preferably ispolzovanpokoleniya rare earth elements, compounds, because their radiation has a very narrow band, and therefore, these compounds are most suitable for automatic control.

However, instead of volatile organic phosphors can also be used unstable inorganic phosphors such as zinc sulfide doped with silver or copper and/or cerium.

According to another variant implementation of the invention can be applied to various magnetic materials, magnetic properties at certain temperatures or irreversible change, or completely lost. As an example, thermostable magnetic materials magnetic hardness medium to hard can be called iron oxide (Fe3About4), black chromium oxide, and barium ferrite.

In contrast, lower thermostability have such a metal magnetic material such as iron or cobalt in powder form or in the form of thin layers. The properties of these materials can vary from soft to hard magnetic. Equally soft and are easily flammable zhelezomargantsevye and high Nickel alloys. Another example of easily flammable, but at the same time is extremely hard magnetic material is americabelieves connection (SmCo5).

Magnetic properties of easily flammable magnetic materials at low the peraturan or completely lost, any change solely a characteristic way. In contrast, magnetic properties of thermostable magnetic substances remain unchanged.

If valuable documents are records of the same type, but have in each case respectively different value, for example, are banknotes of various denominations, such a single value or face value, it is preferable to provide different pairs of properties as signs of authenticity, so when checking residues from combustion can be classified not only on the basis of "true" or "false", but on the specific category, for example to give an opinion about the value of a document. This feature proves to be advantageous especially in the case of banknotes, because the residues from combustion is often impossible to determine what the value originally had the banknote, and their owner requires confirmation that the ashes left from banknotes of a specific denomination.

To enter or introduce substances designed to protect documents against forgery, it is possible in different ways. If valuable document is made out of paper or has a paper layer, such a substance can be uniformly admix in the process of making paper to paper pulp or sprayed or do you print on a certain phase is finished, but still moist paper web or any other way to apply this cloth or embedded in it.

If valuable document is made of plastic or polymer material, designed to protect against forgery substances can be added to the composition of the plastic or polymer material at a stage of its manufacture and then together with them to process into films or fibers. After such films or fibers can be used to produce directly a valuable document or in the manufacture of valuable document. There is also the opportunity to plug into the paper during its production cut, for example, narrow strips of foil as a protective threads. Another possibility is to supply intended for protection against forgery substances melange of fibers or plates. In this case, similarly to the protective threads designed to protect against forgery substances can either be entered directly in the material of these heathered fibers or plates, or do you print on their surface, or be added to the dye solution used for coloring.

Another possibility is to use a polymer film as a cover film, which is laminated identity card or passport.

In another embodiment valuable to the side, you can also seal printed paint, composed of one or more intended for protection against forgery substances. In addition, such substances may be contained in various printing inks. You can use any method of printing, in particular gravure printing, printing using thermal transfer, hot stamping, screen printing.

Other possible embodiments of the invention briefly described in the following examples.

Example 1

In the pulp for the manufacture of counterfeit paper before forming her paintings mingle two phosphor with different spectra of radiation. Thus according to the invention as thermostable phosphor using Y3Al5About12:b with a very characteristic radiation in the green region of the spectrum. As less stable phosphor is used as a compound ZnS:CuCl radiation which lies in the green region of the spectrum, but disappears at temperatures around 700°C. Despite the fact that the radiation of both of these phosphors are in the green region of the spectrum, these radiations are so different spectral distribution that can be detected by measuring equipment separately from each other.

If you are ready paper on fire and let it burn under normal atmospheric conditions, the ash can be found with both phosphor. Only by burning paper in the fiery furnace at temperatures above 1000°With destruction occurs less thermostable phosphor ZnS. In contrast, inorganic phosphor doped with terbium, can withstand such temperatures and retains its properties, allowing on the basis of the characteristic Y3Al5About12:b of the emission spectrum of the ash can be identified as the remnant of the original document that allows you to confirm the formation of the ashes in conditions other than normal atmospheric conditions.

Example 2

To printing ink mixed into two phosphor with different spectra of radiation. As thermostable phosphor using doped with manganese silicate of zinc (product CD 112 company Allied Signal), emitting in the green region of the spectrum. As less stable phosphor used chelate compound of europium from class thenoyltrifluoroacetone (product CD 335 company Allied Signal), fluorescent radiation which lies in the red region of the spectrum.

When applying paint on any base color of both fluorescent pigments are visually perceived as mixed. If such a basis to put then in a fiery furnace to temperatures in excess of 800°, chelate compound of europium be dissolved. In contrast, neorganic the ski phosphor can withstand these temperatures and retains its properties, making on the basis of a characteristic fluorescence spectrum ashes can be identified as the remnant of the original document. Simultaneously, there is also the opportunity to confirm the formation of this ash in conditions other than normal atmospheric conditions.

Example 3

To the synthetic resin obtained, for example, polyprionidae multifunctional isocyanates, melamine and benzamide, in the process of getting admixed as inorganic phosphor doped with europium yttrium oxide (product CD 106 company Allied Signal) together with organic phosphor from the class of benzthiazole (product CD 333 company Allied Signal) with the emission of fluorescence in the yellow-green region of the spectrum. In this way receive intended for protection against forgery substance in powder form, which when excited by UV radiation is characterized by an orange fluorescence. If thus obtained luminescense pigment be added to printing ink and apply the latest on paper, this paper will be characterized by an orange fluorescence. If this paper is to put then in a fiery furnace to temperatures in excess of 800°C, the organic phosphor will collapse. In contrast, inorganic phosphor can withstand these temperatures and retains its properties,allowing on the basis of a characteristic fluorescence spectrum ashes can be identified as the remnant of the original document. In this case, it is also possible to confirm the formation of this ash in conditions other than normal atmospheric conditions. While ash is characterized by red fluorescence.

Example 4

To one of two different offset inks admixed as inorganic fluorescent pigment doped with manganese and lead-calcium silicate (product CD 110 company Allied Signal) with an orange fluorescence, and another offset the paint mixed into the organic pigment based on Anthranilic acid (the product CD 329 company Allied Signal) with a blue fluorescence. Thus obtained printing ink alternately applied in the form of a code marking on the film, which is then cut into narrow strips and used as protective yarns in the manufacture of paper. If the bullet so valuable paper to put then in a fiery furnace to temperatures in excess of 800°C, the organic phosphor will collapse. In contrast, inorganic phosphor can withstand these temperatures and retains its properties, allowing on the basis of a characteristic fluorescence spectrum ashes can be identified as the remnant of the original document. Simultaneously, there is also the opportunity to confirm the formation of this ash in conditions other than normal and the atmospheric conditions. While ash is characterized by an orange fluorescence.

Example 5

In this case, used in example 4, the phosphors mix, first, to printing ink, and secondly, to paper as described in example 1. After applying the printing ink to be manufactured paper the document is characterized by orange fluorescence in print and blue fluorescence in the paper. If the bullet so valuable paper to put then in a fiery furnace to temperatures in excess of 800°C, the organic phosphor will collapse. In contrast, inorganic phosphor can withstand these temperatures and retains its properties, allowing on the basis of a characteristic fluorescence spectrum ashes can be identified as the remnant of the original document. Simultaneously, there is also the opportunity to confirm the formation of this ash in conditions other than normal atmospheric conditions. While ash is characterized by an orange fluorescence.

Example 6

Receive printing ink for gravure printing drawing pad or screen printing with americablog powder (SmCo5). When this was added 1 part of vinylite as a binder with 1-2 parts of magnetic pigment and 0.5 to 3 parts of ethyl acetate as solvent. Quantity is of solvent depends on the printing method used. If the paint is applied with a gravure printing method, it requires a greater amount of solvent, and Vice versa, when the ink for screen printing requires a smaller quantity of solvent.

To get the second printing ink of the above composition with carbonyl iron powder (99% Fe). Then both of these printing inks, optionally with the addition of other pigments, is applied by printing in the form of a barcode on a polymer film, which is then cut into strips in the form of protective threads. These threads are fully incorporated into the paper during its manufacture.

The above combination americablog compounds with carbonyl iron provides a high degree of protection against forgery, as the combination of such compounds is not commercially available product and is strongly characterized by magnetic properties. Americabelieves connection with a residual magnetization of about 40000 e refers to extremely hard magnetic materials, while the remanent magnetization of the carbonyl iron is less than 10 E.

During the combustion of securities under atmospheric conditions americabelieves compound decomposes in the fully non-magnetic oxides, carbonyl iron is converted to iron oxides Fe2About3and Fe3O4with significantly higher compared to arbonelli iron residual magnetization in the range of about 200 to 400 E.

Thus, the hard magnetic properties as a result of combustion is lost, and soft magnetic properties are maintained, although somewhat changed.

Example 7

Described in example 6 magnetic pigments, i.e. americabelieves compound and carbonyl iron, can also be added to the inks for offset printing, letterpress printing or printing with steel engravings. To this end mix from 0.3 to 1 parts of magnetic pigment and 1 part of linseed oil. When this varnish depending on the printing method fray with greater or lesser amount of linseed oil, respectively receiving more liquid (for offset printing) or thicker (seal with steel engravings) mass.

Using this printing ink securities seal various signs or drawings on the same site or on different sites.

Analysis of charred or burnt material, which previously presumably represented the proposed invention is a valuable document, is based on automatically comparable physical or chemical properties used for protection against counterfeit substance. The information about the controlled property is automatically processed and compared with a reference or control values stored in memory. If valuable document assumption was about iboco burned in atmospheric conditions, the measured values of the monitored properties are compared with the expected reference values for the temperature range above about 400-500°and below about 1000°C. to Give a definite conclusion that we are talking about genuine valuable document, only if the measured values coincide with the reference.

Simultaneously, you can also set whether or not the estimated value document was destroyed by atmospheric conditions. The coincidence of the measured values with reference values for the temperature destruction, greater than about 1000°can indicate that the ash was unauthorized withdrawn from the process destroying of securities and declared as residues mistakenly burned valuable document to exchange these remains intact valuable document in the establishment of the Issuer.

To improve the reliability of identification of ashes to detect intended for anti-counterfeiting materials, respectively, are typical components of these materials and to determine their concentration you can use the methods of trace analysis. Suitable for this, for example, methods such as atomic absorption spectroscopy (AAS), atomic emission spectroscopy (NPP) in the spectrum of the discharge, electron beam, x-e is essiona spectroscopy (ARAS).

These methods of trace analysis allow to identify especially those designed to protect against forgery substances that are not contained in the ashes of documents that are not protected offer in the invention method. Thus in the above example 1 is determined by the presence of elements such as yttrium, terbium, zinc and copper, and the ratio of the concentrations of these elements. At the same time in example 7 is determined by the presence of iron, cobalt and samarium, and also estimated the ratio of the concentrations of these elements.

1. Valuable document, first of all banknote or identity card, characterized by the presence of at least two phosphors, luminescent properties which are amenable to automatic control independently of each other, wherein the first phosphor irreversibly loses its fluorescent properties when you first temperature and the second phosphor irreversibly loses its fluorescent properties when the second temperature, wherein the first and/or second temperature exceeds the combustion temperature of the valuable document.

2. Valuable document according to claim 1, characterized in that the first temperature is less than or equal to own the combustion temperature of the valuable document, and the second temperature exceeds the combustion temperature of the valuable document.

3. Valuable document according to claim 1 or 2, trichosis fact, the first and/or second temperature exceeds the combustion temperature of the valuable document, but less than the temperature of destruction of the valuable document.

4. Valuable document according to any one of claims 1 to 3, characterized in that the second temperature higher than the temperature of destruction of the valuable document.

5. Valuable document according to any one of claims 1 to 4, characterized in that the luminescent properties of the phosphors are amenable to automatic control in the same place, but independently from each other.

6. Valuable document according to any one of claims 1 to 5, characterized in that the self-burning temperature of the valuable document is 400 - 600°C, preferably about 500°C.

7. Valuable document according to any one of claims 1 to 6, characterized in that the temperature of the destruction of the valuable document is at least 1000°C.

8. Valuable document according to any one of claims 1 to 7, characterized in that the first phosphor is an inorganic phosphor and the second phosphor is an organic phosphor.

9. A valuable document of claim 8, wherein the organic phosphor is methylene blue.

10. Valuable document according to any one of claims 1 to 7, characterized in that the first and second phosphors are in each case inorganic phosphors.

11. Valuable document according to any one of p-10, characterized in that the inorganic phosphors contain Chris is allicance substances, in the lattice of the matrix which contains dopant rare earth elements.

12. Valuable document according to any one of claims 1 to 11, characterized in that at least one of the luminescent properties present on or in the protective heathered yarns or fibers.

13. Valuable document according to any one of claims 1 to 12, characterized in that at least one of the luminescent properties is present in at least one printing ink, which is printed valuable document.

14. Valuable document according to any one of claims 1 to 13, characterized in that at least one of the luminescent properties present in the material basis of the valuable document.

15. Valuable document according to any one of claims 1 to 14, characterized in that the material basis of the valuable document is mainly paper, preferably paper-based cotton fiber.

16. Valuable document according to any one of claims 1 to 14, characterized in that the material basis of the valuable document is mainly plastic or polymeric material.

17. The combination of substances to protect valuable documents from forgery, consisting of at least two phosphors, luminescent properties which are amenable to automatic control independently from each other, the first phosphor irreversibly loses its fluorescent properties when you first temperature and the second phosphor n is reversible lose their fluorescent properties when the second temperature, characterized in that the first and/or second temperature exceeds the combustion temperature of the valuable document.

18. The combination of substances according to 17, characterized in that the first phosphor is an inorganic phosphor and the second phosphor is an organic phosphor.

19. The combination of substances p, wherein the organic phosphor is methylene blue.

20. The combination of substances p, characterized in that the first and second phosphors are in each case inorganic phosphors.

21. The combination of substances according to any one of p-20, characterized in that the inorganic phosphors contain crystalline substances, in the lattice of the matrix which contains dopant rare earth elements.

22. The combination of substances according to item 21, wherein the rare earth element selected from the group comprising neodymium, ytterbium, praseodymium, erbium, and holmium.

23. The combination of substances according to item 21 or 22, characterized in that the lattice of the matrix contains elements selected from the group comprising chromium and iron.

24. The combination of substances according to claim 20, characterized in that the second phosphor is ZNS:CuCL, and the first phosphor is Y3AL5O12:Tb.

25. A method of manufacturing a valuable document according to any one of claims 1 to 16, namely, that a valuable document for supply of nerar the VNO associated first and second phosphors.

26. The method according A.25, characterized in that at least one of the phosphors is injected or incorporated into the additive in the security thread, heathered fiber or material very valuable document.

27. The method according A.25, characterized in that at least one of the phosphors mingle printing ink, which sealed a valuable document.

28. The method according to any of PP-27, characterized in that the first and second phosphors are processed in a mixture.

29. Method validation charred or burnt material, which previously presumably represented a valuable document according to any one of claims 1 to 16, characterized in that subjected to testing luminescent properties, from memory depending on the temperature, the effects of which have been valuable document, call the stored reference or control value, these reference or control values are compared with the measured values and determine whether it was the temperature at which charred or burned valuable document, its own temperature combustion or temperature of its destruction.



 

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The invention relates to inorganic sheet bearing at least one character, intended for the manufacture of elements of the pigment of a predetermined size, which are used for labeling products, to a method of forming such inorganic elements of pigments and pigment to the coating composition containing pigment particles, intended for printing or ink, as well as to substrates, which caused compositions

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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