Important document

FIELD: printed important documents.

SUBSTANCE: important document has at least one authenticity sign, which is made using luminescent substance on basis of crystalline latticework of base. Crystalline latticework of base is alloyed with at least one chromophore with electronic configuration (3d)2.

EFFECT: increased level of protection of important document from forgery.

7 cl, 3 dwg, 3 ex

 

The present invention relates to printed valuable document having at least one characteristic of the authentication performed using luminescense matter on the basis of crystal lattices basis doped with chromophores with electron configuration (3d)2.

In the context of the present invention, the term "valuable document" refers to banknotes, checks, stocks, stamps (postal, service, travel etc), identity cards, credit cards, passports and similar documents, as well as labels, seals, packaging or other items to protect products from counterfeiting.

Protect valuable documents against forgery using luminescent substances have been known for quite a long time. The use of rare earth metals also have already been discussed.

The advantage of rare earth metals is the presence in their emission spectrum typical narrowband lines, which allows a high degree of reliability to identify their radiation and to distinguish it from radiation having different spectral composition. While it is preferable to use substances in the spectrum of the absorption or emission of which there are lines that lie outside the visible region of the spectrum.

Y substances wavelengths which emitted radiation lies in the range from the ome 400 to about 700 nm, can at their respective excitation to detect visually. In some cases, seek to ensure the availability of such opportunities, when, for example, the authenticity of valuable documents are supposed to check their irradiation with ultraviolet (UV) radiation. In other cases it is more appropriate to use substances, which emitted radiation outside the visible spectrum, because their detection requires special detectors.

However, currently there is only a limited number of phosphors, which have a certain set of characteristic properties that enable their use for anti-counterfeiting of valuable documents, and primarily for automated authentication of such valuable documents. Inorganic and organic phosphors greater part of them have atypical wide spectrum of radiation, and in addition are often commercially available products. For this reason considerably hindered by their identification and becomes impractical simultaneous use of several such compounds.

Based on the above-described prior art, the present invention was used, the goal is to increase the number of phosphors suitable for use as signs of authenticity, which are labeled valuable to the instruments, and first of all to offer valuable documents used in which as signs of authenticity y of a substance different from currently known phosphors used for anti-counterfeiting of valuable documents, characterized by a modified spectrum of the excitation and/or emission.

This problem is solved by using objects presented in the independent claims. Various preferred embodiments of the invention are given in the respective dependent claims.

Proposed in the invention the solution is based on the fact that the difficulty of detecting the luminescence of certain phosphors, which increases with the wavelength of radiation they emit in the infrared (IR) spectral region, can only effectively be used to increase the degree of protection of the valuable document from forgery.

In accordance with the invention to protect valuable documents from forgery are encouraged to use at least one luminescense substance, the emission spectrum of which lies outside the visible spectrum, and preferably even beyond the threshold of sensitivity of silicon detectors.

Substances that can be used for provided by the invention protect valuable documents from forgery, y are in the society on the basis of crystal lattices, bases, doped with chromophores with electron configuration (3d)2. It could be that the chromophores of the same type or a mixture of chromophores at least two different types. According to the present invention as such chromophores is preferable to use such transition metals as titanium with a degree of oxidation of Ti2+below denoted as Ti(II), vanadium with a degree of oxidation of V3+below denoted as V(III), chromium with a degree of oxidation of Cr4+below denoted as Cr(IV), manganese with a degree of oxidation of Mn5+below denoted as Mn(V), and iron with an oxidation number of Fe6+below denoted as Fe(VI).

As the crystal lattices of the framework can be used an inorganic matrix or organic chelates, such as apatites, speciosity, palmierite, forsterite, brushite, delity, ellestadite, francolite, monetite, morenita, velocity, wilkeite, felicity, pyromorphite, garnets, perovskites and olivines, and certain silicates, titanates, vanadates, phosphates, sulfates, aluminates and zirconate.

In a preferred embodiment, the lattice basis is a compound of the formula:

[BaaCabSrcPbdCde(PfVgAshSijSkCr1O4)3FmClnBr p(OH)q]x,

where the sum a+b+c+d+e is equal to 5, the sum f+g+h+j+k+l is 1, the sum of m+n+p+q is 1, x is 1 or 2 and the value of each of a, b, C, d and e lies in the interval from 0 to 5, and the value of each of f, g, h, j, k, 1, m, n, p and q lies in the interval from 0 to 1.

Another preferred lattice basis is a compound of the formula:

[MgaBabCacSrdPbeCdf][PgVhAsjSikSlCrm]O4[FnClpBrq(OH)r],

where the sum a+b+c+d+e+f is equal to 2, the sum g+h+j+k+l+m is equal to 1, the sum n+p+q+r is 1 and the value of each of a, b, C, d, e and f lies in the interval from 0 to 2, and the value of each of g, h, j, k, 1, m, n, p, q, and g lies in the interval from 0 to 1.

As the lattice basis can continue to use the compound of the formula:

[MgaBabCacSrdPbeCdf][SigTihGej]O4,

where the sum a+b+c+d+e+f is equal to 2, the sum g+h+j is 1 and the value of each of a, b, C, d, e and f lies in the interval from 0 to 2, and the value of each of g, h and j lies in the interval from 0 to 1.

It is preferable to continue to use the crystal lattice of the formula:

[LiaNabKcRbd][PeAsfVg]O4,

where the sum a+b+C+d is equal to 3, the sum of e+f+g is equal to 1 and the value of each of a, b, C and d lies in the intervale from 0 to 3, and the value of each of e, f and g lies in the interval from 0 to 1.

The most appropriate use of the crystal lattice of the formula:

[YaLab][SicTid]O5,

where the sum a+b is equal to 2, the sum of C+d is 1 and the value of each of a and b lies in the interval from 0 to 2, and the value of each of C and d lies in the interval from 0 to 1.

As the lattice basis preferably, in addition, to use the compound of the formula:

[BaaCabSrcPbdCde](PfVgAshSijSkCriO4)2,

where the sum a+b+c+d+e is 3, the sum f+g+h+j+k+l is 1 and the value of each of a, b, C, d and e lies in the interval from 0 to 3 and each value of f, g, h, j, k and 1 lies in the interval from 0 to 1.

Preferred are also the crystal lattice of the formula:

[BaaCabSrcPbdCde](PfVgAshSijSkCriO4)3Cl,

where the sum a+b+c+d+e is equal to 5, the sum f+g+h+j+1 is equal to 1 and the value of each of a, b, C, d and e lies in the interval from 0 to 5, and the value of each of f, g, h, j, k and 1 lies in the interval from 0 to 1.

In addition, the most suitable for use in stipulated invention purposes is the crystal lattice of the formula:

[NaaKbRbcCsd][SeSefCrgMo h]O4,

where the sum a+b+C+d is equal to 2, the sum of e+f+g+h is 1 and the value of each of a, b, C and d lies in the interval from 0 to 2, and the value of each of e, f, g and h lies in the interval from 0 to 1.

Most suitable for use under the invention the purpose is to further the crystal lattice of the formula:

[MgaCabSrcBad][SeSefCrgMohWi]O4,

where the sum a+b+C+d is equal to 1, the sum of e+f+g+h+i is equal to 1 and the value of each of a, b, C and d lies in the interval from 0 to 1 and the value of each of e, f, g, h and i lies in the interval from 0 to 1. Particularly preferred is a crystalline lattice basis BaSO4.

The following preferred lattice basis is a compound of the formula:

[ScaYbLacCedPreNdfPmgSmhEujGdkTbiDymHonErpTmqYbrLns][AluDevCrx]O3,

where the sum a+b+c+d+e+f+g+h+j+k+1+m+n+p+q+r+s is equal to 1, the sum u+v+x is equal to 1 and the value of each of a, b, C, d, e, f, g, h, j, k, I, m, n, p, q, r, s, u, v, and x lies in the interval from 0 to 1.

Preferred further the crystal lattice of the formula:

[YaGdbSccLadLne][AlfFegCrh]O12,

where the sum a+b+c+d+e is 3, the sum f+g+h is equal to 5 and the value of each is about and from, b, C, d and e lies in the interval from 0 to 3 and each value of f, g and h lies in the interval from 0 to 5.

The following preferred lattice basis is a compound of the formula:

[MgaCabSrcBad][AleCrfFegGah]O4,

where the sum a+b+C+d is equal to 1, the sum of e+f+g+h is equal to 2 and the value of each of a, b, C and d lies in the interval from 0 to 1 and the value of each of e, f, g and h lies in the interval from 0 to 2, or a compound of the formula:

[MgaCabSrcBad][AleCrfFegGah]O7,

where the sum a+b+C+d is equal to 1, the sum of e+f+g+h is equal to 4 and the value of each of a, b, C and d lies in the interval from 0 to 1 and the value of each of e, f, g and h lies in the interval from 0 to 4.

Preferred are also the crystal lattice of the formula:

Y2[SiaTibZrc]O7or MgCa2[SiaTibZrc]O7,

where the sum a+b+C is equal to 2 and the value of each of a, b and C lies in the interval from 0 to 2.

As the lattice basis can then be used a compound of the formula:

[BaaCabSrc][SidTieZrf]O5,

where the sum a+b+C is equal to 3, the sum of d+e+f is equal to 1 and the value of each of a, b and C lies in the interval from 0 to 3 and each value of d, e and f lies in the interval from 0 to 1.

Predpochtitel is Oh, also, is the crystal lattice of the formula:

[YaLabZrc][PdSie]O4,

where the sum a+b+C is equal to 1, the sum of d+e is equal to 1 and the value of each of a, b and C lies in the interval from 0 to 1 and the value of each of d and e lies in the interval from 0 to 1. Most preferred in this lattice basis YPO4, LaPO4and ZrSiO4.

Preferred further the crystal lattice of the formula:

K[Ti2aZr2b](PO4)3,

where the sum a+b is 1 and the value of each of a and b lies in the interval from 0 to 1. Most preferred in this lattice basis KTi2(PO4)3and KZr2(PO4)3.

A particularly preferred crystalline lattice bases with high tension their crystal field.

The position and shape of the bands of the excitation and/or emission depend on the configuration, in which are embedded into the crystalline lattice basis chromophores. The chromophores may be in the oxide structural fragments of the crystal lattice basis in tetrahedral, and octahedral configuration. More preferred, however, tetrachloroferrate chromophores in the crystal lattice basis. The position and shape of the bands of the excitation and/or emission depend, in addition, from tension to istoricheskogo field in the crystal lattice basis. As a result of interactions that occur between the chromophore and the crystal lattice basis, change, i.e. shift (part relative to each other), the electronic levels of the chromophores with respect to their values and locations in the gas phase.

The concept of the "crystal field" is illustrated below by the example system of Cr3+in octahedral environment [G.F. Imbusch, Spectroscopy of Solid-State Laser-Type Materials, Ed. by .Di Bartolo, 1987, s]. On figa shows the dependence of the position and sequence of the electronic levels of the chromophore Cr3+from the intensity of the crystalline field, i.e. the interaction between the chromophore and the lattice (figure Tanabe-Sugano). In the case of the octahedral crystal field of low tension electronic state of4T2is the first excited state after the ground state4And2and so when the electrons at the level of4T2there is broadband luminescence. In the case of crystalline fields of high intensity first excited electronic state is the state of2E, which only weakly depends on the crystal field, and therefore, when the electrons at this level observed narrow-band luminescence. A similar diagram of the energy levels is possible, using appropriate notations will be built and proposed in the invention configuration (3d) 2. The sequence of electronic levels for the most important octahedral (Oh) and tetrahedral (Td) configurations shown in figb.

To protect valuable documents can be used y substances and with broadband and narrow-band luminescence, however, given the selectivity is more preferable to use y substances with a narrow-band luminescence. Such luminescence is observed primarily among chromophores Mn(V) and Fe(VI)embedded in the crystal lattice of the substrate with high strength of the crystal field.

Usually about escapologist radiation spoken in that case, when the average width of the bands in the spectrum of the radiation is less than 50 nm. It is said, however, does not mean that strip, the width of which lies outside the specified interval, not suitable for solution in the invention of the task.

The variation used in accordance with the invention of the chromophores and their combination with each other and the variation of crystal lattices framework provides numerous opportunities to influence the spectra of excitation and emission proposed in the invention luminescent substances and thereby to obtain a large variety of security features. To identify or detect those or other luminescent substances along with the spectra of their excitation and/or emission can also analyze the lifetime of their luminescence. In the analysis of source lines, respectively, radiation, in addition to their wavelengths can also consider the number and/or shape and/or intensity, allowing in this way to encode some information.

The number proposed in the invention of substances with distinctive force can be improved, if we assume the use of mixed crystals as the crystal lattices of the basics or fundamentals, the crystal lattice of which is doped more impurities. For example, apatites and speciosity or garnets and perovskites can at a certain ratio of the initial concentrations of the substances to form mixed crystals, lattice which one into the other. This, in turn, related to the possibility to modify the crystal field acting on the chromophore.

Equally there is the opportunity to legitamate lattice basis in addition to the proposed invention to other chromophores chromophores, providing in this way the combined luminescence of both systems or the energy transfer between these systems and using this effect for subsequent identification. As an example, suitable for use in this purpose, additional dopants can be called ions of rare earth elements, which due to their E. regirovannyy shells retain their typical character of luminescence and embedded in the lattice basis. It preferably is about cations neodymium (Nd), holmium (Ho), erbium (Er), thulium (Tm), or ytterbium (Yb), or their mixtures.

Marking valuable document, not one, but multiple proposed in the invention luminescense substances can further increase the number of combinations, distinctive force. The number of such combinations may further increase if in addition using fluorescent substances in a mixture between a mixture thereof distinguishable from one another by different ratio of components. In this valuable document can be marked either on its various areas, either in the same place. Application luminescing substances in different parts of the valuable document, respectively, the introduction of luminescing substances in the material valuable document at various sites allows you to add some kind of spatial code, as the most simple example which can be called a bar code.

The degree of protection of the valuable document from forgery could be further enhanced through the use of specifically selected luminescing substances in combination, for example, with other information which bears valuable document that allows you to verify the authenticity of such a document by using the appropriate algorithm. Obviously, h is a valuable document along with the offer in the invention luminescense substance may have other additional signs of authenticity such as traditional signs of authenticity with fluorescent and/or magnetic properties.

In accordance with the invention y substances can enter into the material of the valuable document, or to put on it in different ways. So, for example, y substances can be added to the printing ink. However, y substances can be added to a paper or polymer mass in the process of making a valuable document of the paper, respectively, of synthetic material. Similarly y substances can be introduced into the polymeric material of the substrate or applied to it, which, in turn, can, for example, at least partially incorporated into a paper weight. With such a substrate, a material which is acceptable polymer, such as polymethylmethacrylate (PMMA), and the material which is introduced proposed in the invention luminescense substance can be performed in the form of a security thread, from mixed fibers or in the form of plates. Similarly to protect the products against forgery luminescense substance can be typed directly into the material to be protected from counterfeit products, such as buildings or plastic bottles.

However, polymer (plastic) or paper substrate can also be attached to any other object which, for example, in order to protect products from counterfeiting. The substrate in this case preferably in the form of labels. If the substrate is a component protected from counterfeit products, as, for example, with a tear-off threads for opening the package, in this case, the substrate can, obviously, be given and any other form. In certain cases it may be appropriate to apply luminescense substance on the valuable document in the form of an invisible coating. Such a coating can be applied either to the entire surface of the valuable document or in the form of a pattern, such as stripes, lines, circles, and also in the form of alphanumeric characters. To make luminescense invisible substance in accordance with the invention in the composition of the printing ink or coating of varnish you must use either colorless phosphor or color phosphor in the lowest possible concentration that ensures the transparency of the coating. Alternative or in addition to manufacturing the substrate can also be used with appropriate coloring material that allows you to make color y of the substance, its own color which matches the color of the substrate material, are not visually distinguishable.

Normally offered in the invention luminescense the substances processed in pigments. Such pigments to improve their technological properties (processing AIDS) or to increase their resistance can be represented in the form of individually encapsulated particles or in the form of particles, which is applied inorganic or organic coating. For example, the individual pigment particles to facilitate their dispersion in various environments conclude with this purpose in silicate shell. Equally related to one combination of pigment particles can be encapsulated together, such as fibers, threads, silicate shells. In this case, it becomes impossible to change in the next code combination. "Kapsulirovaniem" refers to the conclusion of the pigment particles in fully covering their shell, while the "floor" refers to the conclusion of the pigment particles in partially covering their shell, respectively, causing them to partially cover cover them.

Below are examined in more detail some examples of the invention luminescing substance and its production method.

Example 1

To obtain luminescing substance of the original substance in the form of oxides or in the form of substances which can be converted to oxides, are mixed together in a certain ratio, for example, in accordance with the th following equation (1), supply chromophore and then subjected to annealing, crushed, washed (e.g., water), dried and milled. As a chromophore can be used, for example, Mn2About3, MnO, MnO2, MnCO3, MnCl2, KMnO4and organic manganese compounds. Mass fraction of such chromophores in terms of the mass of the whole mixture can reach 20 wt.%. Annealing is carried out at a temperature of from 200 to 1700°and holding at that temperature for 0.2 to 24 hours, preferably, however, at temperatures from 300 to 500°and holding at that temperature for 0.5-2 hours

6LiOH+As2O5+xMnCl2→2Li3AsO4:Mn+3H2O+xCl2(1)

To shift the equilibrium towards the formation of the product to the original mixture can optionally add LiCO3, preferably in an amount of from 1 to 5%, and an additional amount of LiOH, comprising from 1 to 20 wt.%.

Example 2

In alkaline medium dissolve the appropriate amount of sulfates (For example, a2SO4or chromates (e.g., K2CrO4), as well as some amount of alloying materials, such as Na2FeO4. When using Na2FeO4as alloying substances can reach 20%. Evaporation of the solvent to obtain the target product for later use is isawanya crushed.

In other variant is possible also to carry out solid-phase reaction. To this end, first the K2SO4crushed together with NaCl and thoroughly mixed with Fe3O4. Then the mixture is subjected to calcination at a temperature of from 700 to 1800°C. thus Obtained product for future use crushed.

Example 3

Described in example 2, the process can be modified and used for evaporation of the solvent spray dryer. In addition, the alkaline medium may wholly or partially be composed, for example, of silica suspension (for example, of a suspension of the product LUDOX®AS-40 Dupont). In this case, in the spray drying receive material, enclosed in a silica shell. Subsequent annealing is carried out preferably at a temperature of from 200 to 600°receive a protective SiO2layer, giving in this way the substance resistance to dissolution in water. The resulting material can optionally be incorporated or embedded in a polymer, such as PMMA, and then turn it into a film or sheet material. Such film or sheet material is then cut into individual slices.

Other options for the implementation and advantages of the invention discussed below in more detail with reference to figure 2, which is shown in the cross section proposed the invention the protective element.

Figure 2 shows one of the embodiments proposed in the invention, the protective element. In this case, the protective element is a label 2, which consists of a paper or polymer layer 3, a transparent cover layer 4 and the adhesive layer 5. This adhesive layer 5 allows you to attach the label 2 to 1 basis. This base 1 can serve as valuable documents, identity cards, passports, certificates and similar documents, as well as other protected from counterfeit products, such as CDs, packaging, or similar products. In the present embodiment, luminescense substance 6 is contained in the volume layer 3.

In another embodiment, this luminescense substance may also be contained in not shown in the drawing, printing ink deposited on one of the layers of the label, preferably on the surface layer 3.

Luminescense substance instead of its introduction into the substrate material, which in the following as a protective element is fixed on the protected product, or applied on such a substrate, in accordance with the invention directly to provide the volume of material to be protected from forgery of a valuable document, respectively, to coat its surface in the form of a coating.

1. Valuable document having at least one characteristic under which innosti, made using luminescense matter on the basis of the crystal lattices of the base, characterized in that the crystal lattice basis doped with at least one chromophore with electronic configuration (3d)2.

2. Valuable document according to claim 1, characterized in that the crystal lattice of the bases has a crystalline field of high intensity.

3. Valuable document according to claim 1 or 2, characterized in that the chromophore is either titanium with a degree of oxidation of 2 or vanadium with a degree of oxidation of 3 or chromium with a degree of oxidation of 4 or manganese with oxidation number 5, or iron with oxidation States 6.

4. Valuable document according to any one of claims 1 to 3, characterized in that it is made of paper or synthetic, respectively polymeric material.

5. Valuable document according to any one of claims 1 to 4, characterized in that the sign of authenticity is the volume of material valuable document or available as printed on the value document layer.

6. Valuable document according to any one of claims 1 to 5, characterized in that luminescense substance provided on a valuable document in the form of invisible coating at least partially covering the valuable document.

7. Valuable document according to any one of claims 1 to 6, characterized in that luminescense substance added to printing ink.

8. Valuable document is t according to any one of claims 1 to 7, characterized in that the coating has the form of one or more bands.

9. Valuable document according to any one of claims 1 to 8, characterized in that the crystal lattice of the basics additionally doped with at least one element selected from the group comprising cations of rare earth metals.

10. Valuable document according to claim 9, characterized in that the cation of the rare earth metal selected from the group comprising the cation of neodymium (Nd), holmium (Ho), erbium (Fr), thulium (Tm), and ytterbium (Yb).

11. Valuable document according to any one of claims 1 to 10, characterized in that the crystal lattice bases selected from the class Apatite, spoliation, palmarito, forsterite, Brusilov, gallito, ellestadite, francolite, monetite, morenito, whitlockite, wilkeite, pellerito, pyromorphite, garnets, perovskites, silicates, titanates, vanadates and phosphates.

12. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[BaaCabSrcPbdCde(PfVgAshSijSkCr1O4)3FmClnBrp(OH)q]x,

where the sum a+b+c+d+e is equal to 5, the sum f+g+h+j+k+l is 1, the sum of m+n+p+q is 1, x is 1 or 2, and the value of each of a, b, C, d and e lies in the interval from 0 to 5, and the value of each of f, g, h, j, k, 1, m,n, p and q lies in the interval from 0 to 1.

13. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[MgaBabCacSrdPbeCdf][PgVhAsjSikSlCrm]O4[FnClpBrq(OH)r],

where the sum a+b+c+d+e+f is equal to 2, the sum g+h+j+k+1+m is equal to 1, the sum n+p+q+r is equal to 1, and the value of each of a, b, C, d, e and f lies in the interval from 0 to 2, and the value of each of g, h, j, k, 1, m, n, p, q, and g lies in the interval from 0 to 1.

14. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[MgaBabCacSrdPbeCdf][SigTihGej]O4,

where the sum a+b+c+d+e+f is equal to 2, the sum g+h+j equals 1, and the value of each of a, b, C, d, e and f lies in the interval from 0 to 2, and the value of each of g, h and j lies in the interval from 0 to 1.

15. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[LiaNabKcRbd][PeAsfVg]O4,

where the sum a+b+c+d is equal to 3, the sum of e+f+g equals 1, and the value of each of a, b, C and d lies in the interval from 0 to 3 and each value of e, f and g lies in what intervale from 0 to 1.

16. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[YaLab][SicTid]O5,

where the sum a+b is equal to 2, the sum of c+d is equal to 1, and the value of each of a and b lies in the interval from 0 to 2, and the value of each of C and d lies in the interval from 0 to 1.

17. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[BaaCabSrcPbdCde](PfVgAshSijSkCriO4)2,

where the sum a+b+c+d+e is 3, the sum f+g+h+j+k+l is 1, and the value of each of a, b, C, d and e lies in the interval from 0 to 3 and each value of f, g, h, j, k and 1 lies in the interval from 0 to 1.

18. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[BaaCabSrcPbdCde](PfVgAshSijSkCriO4)3Cl,

where the sum a+b+c+d+e is equal to 5, the sum f+g+h+j+1 equals 1, and the value of each of a, b, C, d and e lies in the interval from 0 to 5, and the value of each of f, g, h, j, k and 1 lies in the interval from 0 to 1.

19. Valuable document according to any one of claims 1 to 11, characterized in that the crystal lattice is very foundations is a compound of the formula

[NaaKbRbcCsd][SeSefCrgMoh]O4,

where the sum a+b+c+d is equal to 2, the sum of e+f+g+h is equal to 1, and the value of each of a, b, C and d lies in the interval from 0 to 2, and the value of each of e, f, g and h lies in the interval from 0 to 1.

20. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[MgaCabSrcBad][SeSefCrgMohWi]O4,

where the sum a+b+c+d is equal to 1, the sum of e+f+g+h+i is equal to 1, and the value of each of a, b, C and d lies in the interval from 0 to 1 and the value of each of e, f, g, h and i lies in the interval from 0 to 1.

21. Valuable document according to any one of claims 1 to 11, characterized in that

the lattice basis is a compound of the formula

[ScaYbLacCedPreNdfPmgSmhEujGdkTbiDymHOnErpTmqYbrLns][AluDevCrx]O3,

where the sum a+b+c+d+e+f+g+h+j+k+1+m+n+p+q+r+s is equal to 1, the sum u+v+x equals 1, and the value of each of a, b, C, d, e, f, g, h, j, k, i, m, n, p, q, r, s, u, v, and x lies in the interval from 0 to 1.

22. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[Ya/sub> GdbSccLadLne][AlfFegCrh]O12,

where the sum a+b+c+d+e is 3, the sum f+g+h is equal to 5, and the value of each of a, b, C, d and e lies in the interval from 0 to 3 and each value of f, g and h lies in the interval from 0 to 5.

23. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[MgaCabSrcBad][AleCrfFegGa]O4,

where the sum a+b+c+d is equal to 1, the sum of e+f+g+h is equal to 2, and the value of each of a, b, C and d lies in the interval from 0 to 1 and the value of each of e, f, g and h lies in the interval from 0 to 2, or a compound of the formula

[MgaCabSrcBad][AleCrfFegGah]O7,

where the sum a+b+c+d is equal to 1, the sum of e+f+g+h is equal to 4, and the value of each of a, b, C and d lies in the interval from 0 to 1 and the value of each of e, f, g and h lies in the interval from 0 to 4.

24. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

Y2[SiaTibZrc]O7or MgCa2[SiaTibZrc]O7,

where the sum a+b+C equals 2, and the value of each of a, b and C lies in the interval from 0 to 2.

25. Valuable document according to any one of claims 1 to 11, characterized in, is that the lattice basis is a compound of the formula

[BaaCabSrc][SidTieZrf]O5,

where the sum a+b+C is equal to 3, the sum of d+e+f is equal to 1, and the value of each of a, b and C lies in the interval from 0 to 3 and each value of d, e and f lies in the interval from 0 to 1.

26. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

[YaLabZrc][PdSie]O4,

where the sum a+b+C is equal to 1, the sum of d+e is equal to 1, and the value of each of a, b and C lies in the interval from 0 to 1 and the value of each of d and e lies in the interval from 0 to 1.

27. Valuable document according to any one of claims 1 to 11, characterized in that the lattice basis is a compound of the formula

K[Ti2aZr2b](PO4)3,

where the sum a+b is equal to 1, and the value of each of a and b lies in the interval from 0 to 1.

28. Valuable document according to any one of claims 1 to 27, characterized in that the chromophores are present in the crystal lattice framework in tetrachlorophenol.

29. Valuable document according to any one of claims 1 to 28, characterized in that luminescense substance presented in the form of pigment particles.

30. A protective element having a substrate and at least one luminescense substance on the basis of doped crystalline lattices, bases, characterized in that the crystal lattice basis doped with at least one chromophore with electronic configuration (3d) 2.

31. The protective element according to item 30, wherein the lattice framework has a crystalline field of high intensity.

32. The protective element according to item 30 or 31, characterized in that it has the form of a strip or tape.

33. The protective element according to any one of p-32, characterized in that the substrate is in the form of a security thread, a plate or mixed fibers.

34. The protective element according to any one of p-33, characterized in that it is made in the form of labels.

35. The protective element according to any one of p-34, characterized in that at least one luminescense substance embedded in the substrate material or drawn on it.

36. A method of manufacturing a valuable document according to any one of claims 1 to 29, characterized in that luminescense substance added to printing ink.

37. A method of manufacturing a valuable document according to any one of claims 1 to 29, characterized in that luminescense substance is applied in the coating process.

38. A method of manufacturing a valuable document according to any one of claims 1 to 29, characterized in that luminescense substance buried or embedded in the volume of material valuable document.

39. The method according to 38, characterized in that luminescense substance is injected into the material of the valuable document in the form of appropriately received mixed fibers.

40. The method according to 38, characterized in that lumines yousee substance is injected into the material of the valuable document in the form of appropriately obtained security threads.

41. The authentication method is a valuable document according to any one of claims 1 to 29 or a protective element according to any one of p-35, characterized in that analyze wavelengths, and/or the number and/or shape and/or intensity of the radiation lines and/or bands of excitation of the luminescent substances.

42. The method according to paragraph 41, wherein the line of radiation and/or band excitation form some encoding.

43. The authentication method is a valuable document according to any one of claims 1 to 29 or a protective element according to any one of p-35, wherein analyzing the lifetime of the luminescence emitted luminescense substances.



 

Same patents:

FIELD: printed matter of special format.

SUBSTANCE: multi-layered article comprises the layer sensitive to the laser radiation, marking member, e.g., diffraction and/or holographic structure, reflecting layer, and print formed in the second layer and/or in the layer sensitive to the laser radiation. The layer sensitive to the laser radiation has markers that are made by means of laser radiation and precisely positioned with respect to the marking member.

EFFECT: enhanced reliability of protection.

27 cl, 40 dwg

FIELD: devices for protecting books or documents.

SUBSTANCE: protecting member comprises substrates, planar or dispersed metallized coverings with a definite specific resistance, and conducting polymers with a definite specific resistance. The difference between the specific resistances exceeds 100 KOm/m.

EFFECT: enhanced reliability.

14 cl, 8 dwg, 7 ex

FIELD: manufacturing multi-layered films.

SUBSTANCE: film comprises base made of bi-axially oriented polypropylene film and polyolefin film. Before laminating, the polyolefin film is colored. The multi-layered film is oriented in transverse direction or longitudinal direction and transverse direction after laminating. The thickness of the multi-layered film ranges from 8 μm to 26 μm. The method of producing the multi-layered film is also presented.

EFFECT: expanded functional capabilities.

9 cl, 3 ex

FIELD: protective system for checking authenticity of valuable documents.

SUBSTANCE: protective system in case of falling light can reconstruct a pattern outside the plane of carrier in holographic way, which pattern contains concealed information. System contains surface, at least partially transparent verification element, which in case of surface contact with protective element allows reading of information stored in it.

EFFECT: higher level of protection from forgery, increased reliability of authenticity check.

9 cl, 8 dwg

FIELD: engineering of protection elements.

SUBSTANCE: protection element 2 of plastic laminate 1 with surface ornament 12 mosaic-composed of surface elements 13,14,15, while plastic laminate 1 has shaped layer 5 positioned between surface 4 and protective 6 layers. Light 11 falling on boundary surface 8 between shaped 5 and protective 6 layers, is reflected, while at boundary surface 8 structures 9 are formed of optical effect of surface elements 13,14,15. in surface ornament 12 at least one pair 14,15 of surfaces is positioned, formed by first 14 and second 15 surface elements. Each surface element 14,15 has diffraction structure {B(x,y,T)}, produced by superposition of grid structure {G(x,y)} onto profiled structure {R(x,y)}. In first surface el 14 vector 16 of grid structure {G(x,y)} and vector 17 of profiled structure {R(x,y)} are practically parallel to each other, and inside second surface element 15 vector 16 of similar grid structure {G(x,y)} and vector 17 of similar profiled structure {R(x,y)} enclose practically a right angle, vectors 16 of grid structures {G(x,y)} in both surface elements 14,15 are practically parallel. Spatial frequency fR of both relief structures {R(x,y)} is more than 2500 lines in one millimeter, while spatial frequency fR of profile is at least ten times greater than spatial frequency fG of both grid structures {G(x,y)}.

EFFECT: protection element is hard to copy and has bright surface drawing altering on rotation or inclination, authenticity of element is easily checked by simple means.

25 cl, 10 dwg, 2 ex

FIELD: production of a paper protected against a counterfeit.

SUBSTANCE: the invention is pertaining to manufacture of a paper protected against a counterfeit and used for manufacture of the important documents, such as banknotes, certificates and other analogous important documents, and which has at least one multilayer protective element capable to form at least one visually checkable optical effect. This protective element is at least partially is placed on the surface of the paper protected against a counterfeit and supplied at least with one integrated circuit. At that the protective element has at least one layer containing pigments with optically variable properties, first of all - interferential or liquid-crystal pigments. So the invention ensures production of a simple and inexpensive in manufacture important document, which allows to form an suitable to the visual control optical effect and simultaneously make it possible to conduct a machine check.

EFFECT: the ensures production of a simple and inexpensive in manufacture important document, formation of an suitable to the visual control optical effect and simultaneously permits a machine check.

73 cl, 10 dwg

FIELD: image printing technologies.

SUBSTANCE: required color is produced by mixing colors of image points, and on substrate fluorescent point of printing paints image are formed, which contain pigments fluorescent when excited by a certain electromagnetic emission, and also non-fluorescent image points of printing paints, containing colored pigments, non-fluorescent when excited by a certain electromagnetic emission. Aforementioned fluorescent image points and non-fluorescent image points are positioned on substrate in staggered order relatively to each other.

EFFECT: higher efficiency, higher quality.

2 cl, 4 ex

Protective element // 2255000

FIELD: production of optically diffraction protective elements.

SUBSTANCE: the invention is pertaining to production of optically diffraction protective element. The protective element with a sample formed out of the separated surfaces and having the form of a laminated structure used for notarization of authenticity of a document contains, at least, a transparent protective layer, a transparent varnished layer and an adhesive layer. The separated surfaces of the sample consist of the background surfaces and elements of the sample. At that in the field of the background surfaces the varnished layer is formed smooth and even and in the field of elements of the sample the relief structures with the definite optically effective depth "h" are formed in the varnished layer. The background surfaces for the light illuminating a laminated serve as the even reflecting planes and the relief structures are two-dimensional diffraction gratings, which are formed out of the bas gratings with the periods (dx;dy) and the periods (dx;dy) are smaller, than the given limiting wavelength (λ) in the shortwave part of the spectrum of the visible light so, that elements of the sample absorb and disperse the illuminating light. At that in each relief structure the ratio of the absorbed and the dispersed light is given and depends on the given optical effective depth (h) in the relief structure. Thus the invention ensures a high protection of an element against its reproduction by copiers.

EFFECT: the invention ensures a high protection of an element against its reproduction by copiers.

25 cl, 9 dwg

FIELD: polymeric industry.

SUBSTANCE: marker comprises substrate provided with organic polymeric surface, coating solidified by irradiation and applied on the organic polymeric surface, and coloring agent applied on the solidified coating. The substrate has light-reflecting layer. The coloring agent can not be removed by five-fold wiping the surface with petrol. The method comprises preparing the substrate and applying the coloring agent on the coating solidified by radiation. The substrate has light-reflecting layer.

EFFECT: prolonged service life.

28 cl, 6 dwg, 2 tbl

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

FIELD: optics.

SUBSTANCE: the optically changeable plane specimen is made of partial elements with diffraction reflecting structures and mirror-reflecting partial elements for formation of two or more images, which at illumination by light falling perpendicularly to the plane specimen may be perceived singly by the observer at an observation distance equal to 30 cm at different angles of view. The partial elements contain achromatically diffracting saw-tooth relief structures with saw-tooth inclination angles relative to the plane of the plane specimen. The relief structures related to various images have different angles of inclination, and the value of the maximum angle of inclination makes up maximum 25 deg, so that the difference of the angles of view for light beams reflected from relief structures at least of two images is less than the difference of angles equal to 30 deg. determined by a duplicator, due to it the copy produced with the aid of a duplicator reproduces at least two images by imposition one on the other.

EFFECT: produced optically changed plane specimen, which provides for an improved protection against copying.

11 cl, 9 dwg

FIELD: printed matter of special format.

SUBSTANCE: multi-layered article comprises the layer sensitive to the laser radiation, marking member, e.g., diffraction and/or holographic structure, reflecting layer, and print formed in the second layer and/or in the layer sensitive to the laser radiation. The layer sensitive to the laser radiation has markers that are made by means of laser radiation and precisely positioned with respect to the marking member.

EFFECT: enhanced reliability of protection.

27 cl, 40 dwg

FIELD: devices for protecting books or documents.

SUBSTANCE: protecting member comprises substrates, planar or dispersed metallized coverings with a definite specific resistance, and conducting polymers with a definite specific resistance. The difference between the specific resistances exceeds 100 KOm/m.

EFFECT: enhanced reliability.

14 cl, 8 dwg, 7 ex

FIELD: devices for protecting books or documents.

SUBSTANCE: protecting member comprises substrates, planar or dispersed metallized coverings with a definite specific resistance, and conducting polymers with a definite specific resistance. The difference between the specific resistances exceeds 100 KOm/m.

EFFECT: enhanced reliability.

14 cl, 8 dwg, 7 ex

FIELD: manufacturing multi-layered films.

SUBSTANCE: film comprises base made of bi-axially oriented polypropylene film and polyolefin film. Before laminating, the polyolefin film is colored. The multi-layered film is oriented in transverse direction or longitudinal direction and transverse direction after laminating. The thickness of the multi-layered film ranges from 8 μm to 26 μm. The method of producing the multi-layered film is also presented.

EFFECT: expanded functional capabilities.

9 cl, 3 ex

FIELD: protective system for checking authenticity of valuable documents.

SUBSTANCE: protective system in case of falling light can reconstruct a pattern outside the plane of carrier in holographic way, which pattern contains concealed information. System contains surface, at least partially transparent verification element, which in case of surface contact with protective element allows reading of information stored in it.

EFFECT: higher level of protection from forgery, increased reliability of authenticity check.

9 cl, 8 dwg

FIELD: information carrier with a structure possessing optically variable properties, embossing die designed for manufacture of the carrier, method for manufacture of the carrier and use of the die for its manufacture.

SUBSTANCE: the information carrier (1) has a structure (2) possessing optically variable properties, consisting of an embossed structure and a coating contrasting with the surface of the information carrier. Such an embossed structure and a coating are combined in such a way that at least some sections of this coating are completely seen at a right angle of vision, and at an acute angle of vision they become invisible as a result of which a Kipp-effect is produced at an alternative consideration at right and acute angles of vision. Such a coating is made uniform, and the embossed structure is subdivided into separate sections with various embossed substructures provided on them.

EFFECT: enhanced degree of carrier protection against falsification by reproduction, enhanced convenience of visual check.

55 cl, 10 dwg

FIELD: engineering of protection elements.

SUBSTANCE: protection element 2 of plastic laminate 1 with surface ornament 12 mosaic-composed of surface elements 13,14,15, while plastic laminate 1 has shaped layer 5 positioned between surface 4 and protective 6 layers. Light 11 falling on boundary surface 8 between shaped 5 and protective 6 layers, is reflected, while at boundary surface 8 structures 9 are formed of optical effect of surface elements 13,14,15. in surface ornament 12 at least one pair 14,15 of surfaces is positioned, formed by first 14 and second 15 surface elements. Each surface element 14,15 has diffraction structure {B(x,y,T)}, produced by superposition of grid structure {G(x,y)} onto profiled structure {R(x,y)}. In first surface el 14 vector 16 of grid structure {G(x,y)} and vector 17 of profiled structure {R(x,y)} are practically parallel to each other, and inside second surface element 15 vector 16 of similar grid structure {G(x,y)} and vector 17 of similar profiled structure {R(x,y)} enclose practically a right angle, vectors 16 of grid structures {G(x,y)} in both surface elements 14,15 are practically parallel. Spatial frequency fR of both relief structures {R(x,y)} is more than 2500 lines in one millimeter, while spatial frequency fR of profile is at least ten times greater than spatial frequency fG of both grid structures {G(x,y)}.

EFFECT: protection element is hard to copy and has bright surface drawing altering on rotation or inclination, authenticity of element is easily checked by simple means.

25 cl, 10 dwg, 2 ex

FIELD: production of a paper protected against a counterfeit.

SUBSTANCE: the invention is pertaining to manufacture of a paper protected against a counterfeit and used for manufacture of the important documents, such as banknotes, certificates and other analogous important documents, and which has at least one multilayer protective element capable to form at least one visually checkable optical effect. This protective element is at least partially is placed on the surface of the paper protected against a counterfeit and supplied at least with one integrated circuit. At that the protective element has at least one layer containing pigments with optically variable properties, first of all - interferential or liquid-crystal pigments. So the invention ensures production of a simple and inexpensive in manufacture important document, which allows to form an suitable to the visual control optical effect and simultaneously make it possible to conduct a machine check.

EFFECT: the ensures production of a simple and inexpensive in manufacture important document, formation of an suitable to the visual control optical effect and simultaneously permits a machine check.

73 cl, 10 dwg

FIELD: production of a paper protected against a counterfeit.

SUBSTANCE: the invention is pertaining to manufacture of a paper protected against a counterfeit and used for manufacture of the important documents, such as banknotes, certificates and other analogous important documents, and which has at least one multilayer protective element capable to form at least one visually checkable optical effect. This protective element is at least partially is placed on the surface of the paper protected against a counterfeit and supplied at least with one integrated circuit. At that the protective element has at least one layer containing pigments with optically variable properties, first of all - interferential or liquid-crystal pigments. So the invention ensures production of a simple and inexpensive in manufacture important document, which allows to form an suitable to the visual control optical effect and simultaneously make it possible to conduct a machine check.

EFFECT: the ensures production of a simple and inexpensive in manufacture important document, formation of an suitable to the visual control optical effect and simultaneously permits a machine check.

73 cl, 10 dwg

FIELD: protective marks.

SUBSTANCE: method for making protective marks on carrier having first surface and second surface opposite to first surface, includes sealing of first surface with high-resolution varnish, carrier is then electrolyzed and then washed and dried.

EFFECT: higher level of protection of forgery.

3 cl, 25 dwg

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