Valuable document protected from forgery and method of determining its authenticity

FIELD: physics.

SUBSTANCE: valuable document contains an identification mark based on the elements made of an amorphous ferromagnetic alloy. The elements are segments of microwires connected to each other, having the ability to emit electromagnetic pulses with a jump-like magnetization reversal under the influence of an external sinusoidal magnetic field. The intensity of the exciting magnetic field is chosen to be from 0.1 to 1000 A/m, and the frequency of this field is in the range of 0.1 to 100 KHz. The pulses emitted at the field magnetization have the options characteristic for the protective label of number: the number of pulses, the ratio of their intensities and phases measured relative to the zero-phase referred to the magnetic field, with the formation of a given code.

EFFECT: invention provides a high degree of protection of documents and reliability of determining their authenticity.

12 cl, 4 ex, 2 dwg



Same patents:

FIELD: measurement equipment.

SUBSTANCE: invention relates to inspection of documents of value with a protective element having low and high coercive magnetic areas, and also combined magnetic areas. After magnetisation of all magnetic areas in the first direction, the second magnetisation is carried out, at which only low coercive magnetic material is magnetised reversely as back-to-back to the first magnetisation, however, high coercive magnetic material remains in the first direction of magnetisation. Then the first magnetic signals of the protective element are detected with the help of the first magnetic detector, and the second magnetic signals of the protective element - with the help of the second magnetic detector. On the basis of the magnetic signals each magnetic area of the protective element is identified as high coercive, low coercive or combined magnetic area.

EFFECT: provision of reliability of differences of each magnetic area.

15 cl, 7 dwg

FIELD: printing.

SUBSTANCE: security feature is proposed to protect valuable documents against forgery, having a plurality of microcapsules each of which has a wall and each of which contains a liquid medium in which several magnetic particles are distributed, which are arranged movably in the liquid medium with the ability to change their position inside the microcapsule by influencing with the magnetic field and which are made with the ability of their ordering in the microcapsule to form a diffraction regular structure by them.

EFFECT: proposed invention increases the degree of protection of the document against forgery.

15 cl, 5 dwg

FIELD: physics.

SUBSTANCE: invention discloses a magnetic sensor, a device and a method of checking a valuable document. The magnetic sensor (10) for checking a valuable document (1) has a first row measurement-conversion unit (12) and a second row measurement-conversion unit (14). The first measurement-conversion unit (12) has multiple magneto-sensitive elements (13) with a first direction (H1) of maximum sensitivity. The second measurement-conversion unit (14) has multiple magneto-sensitive elements (15) with a second direction (H2) of maximum sensitivity different from the first direction (H1) of maximum sensitivity.

EFFECT: facilitating distinction of valuable documents with magnetic codes formed by magnetic materials with different coercitive forces.

19 cl, 5 dwg

FIELD: printing.

SUBSTANCE: invention relates to a protection element for bank notes, cards-passes, etc. The protection element comprises a first substrate which at least partly is opaque when viewed in transmitted light, and a plurality of magnetic zones placed on the said substrate, at that each of the said magnetic zones is formed using the first magnetic material, the second magnetic material or composition of the first and second magnetic materials which are at least partially superimposed. The first magnetic material and the second magnetic material exhibit different coercivity values which are determined by the sensor, at that the first and second magnetic materials are magnetically saturated, so that one of the first and second magnetic materials is not affected by the other.

EFFECT: protection element has a high ability to protect against counterfeiting.

25 cl, 10 dwg

FIELD: printing industry.

SUBSTANCE: invention describes an elongated protective element for papers, security papers and other documents. The protective element has longitudinal direction and transverse direction perpendicular to the longitudinal direction; with that, it includes a magnetic layer located on a substrate and having machine readable magnetic sections. The magnetic layer includes a set of frame magnetic elements that have machine readable magnetic sections and are located in longitudinal direction of the elongated protective element; with that, frame magnetic elements form closed magnetic frames located at some distance from each other; with that, each of the above frames is located around additional protective elements, thus containing the above elements inside itself.

EFFECT: proposed invention provides easy and accurate reading of magnetic sections of the protective element at its supply in any reading direction.

20 cl, 11 dwg

FIELD: physics.

SUBSTANCE: protective element contains a plurality of particles consisting of a core and a cladding. The core of the particles contains a magnetic fluid medium and is visually distinct from the magnetic fluid medium of a nonmagnetic phase, configured to move inside the magnetic fluid medium.

EFFECT: protective element with high degree of protection from forgery, whose outward appearance can be interactively affected during authentication to obtain a dynamic image.

29 cl, 9 dwg

FIELD: printing.

SUBSTANCE: protective element, in particular for currency units, pass cards, and similar things, comprising: a first substrate that is at least partially opaque when viewed in transmitted light. The magnetic fields located on the said substrate, and the magnetic fields comprise at least two types of magnetic fields which have different values of coercivity, and which magnetic remanence is the same or different. And the said different values of coercivity are adapted to create at least three different codes. The said three codes are defined by all available magnetic fields, magnetic fields with the high value of coercivity and magnetic fields with low value of coercivity, respectively, and the said magnetic field are separated from each other by areas in which there is no magnetic material. At that, at least some of these magnetic fields with low and high coercivity value are placed so as to be superimposed on the said first substrate.

EFFECT: protective element has a high level of protection against forgery.

23 cl, 10 dwg

FIELD: information technologies.

SUBSTANCE: reading sensor suitable for reading a protection element having magnetic areas with different coercitivity, and comprising at least one first reading head and at least one second reading head, which are arranged in parallel to each other and are arranged as capable of detecting two separate sequences of signals, besides, a permanent magnet is arranged between the specified reading heads, and the specified first and second heads are arranged at the angle relative to the specified element of protection regardless of the direction of displacement of the specified element of protection relative to the mentioned sensor.

EFFECT: providing of the possibility to read elements of protection having magnetic areas with different coercitivity.

13 cl, 11 dwg

FIELD: information technology.

SUBSTANCE: valuable document, transferrable material and a method of verifying such a protective element of the valuable document are also described in the claim. One or more, at most five, magnetic areas and one or more, at most five, empty areas lie along the protective element, for example, along the longitudinal direction thereof. The length of the magnetic areas or empty areas along the protective element is preferably selected such that magnetic signals from neighbouring boundaries of magnetic or empty areas, where there are magnetisation jumps arising when the protective element moves past a magnetosensitive sensor, constructively interfere with each other.

EFFECT: simple verification of a protective element.

25 cl, 8 dwg

FIELD: information technology.

SUBSTANCE: protective element, particularly for banknotes and bank cards, has a substrate on which there is at least one opaque layer (2) and symbols and/or marks (3) are formed in regions of at least one opaque layer (2), containing, at least in the symbols and/or marks, one or more magnetic elements (4, 6) which are visible in at least transmitted light.

EFFECT: simple manufacture and verification of documents.

34 cl, 10 dwg

FIELD: textiles, paper.

SUBSTANCE: recessed elements are inserted into paper, which provide safety and prevent forgery of the document. The paper comprises a security thread or strip as a windowed thread and a watermark obtained using electrotype in the areas of the greatest accumulation of the fibers intended to cover the said windowed thread. The windowed thread or strip is visible in some areas and is hidden in the other intermediate areas. The areas where the windowed thread or strip is hidden are dark areas in which near the security thread or strip the watermarks are placed obtained using electrotype.

EFFECT: creation of an effective means of protection against forgery of valuable documents.

14 cl, 3 dwg

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: textile, paper.

SUBSTANCE: movable support surface with waterproof areas is passed through a bath with a fibre-containing solution, thus aiding in accumulation of fibres on the movable support surface. A belt is fed to the movable support surface, which contains open parts and linking parts so that open parts are substantially opposite to waterproof areas of the movable support surface. The belt is fed to the movable surface in the bath under its free surface in the area, where fibres have already been accumulated on the movable support surface, accumulation of fibres continues so that they are accumulated on linking parts and along the contour of open parts. At the same time waterproof areas do not protrude relative to the specified movable surface or protrude by not more than the thickness of a sealing substance applied onto the movable surface at the level of waterproof areas.

EFFECT: method ensures development of a fibre base with windows on a movable support surface, which does not contain relief elements, to simplify technology of base manufacturing with windows and to reduce requirements to accuracy of belt synchronisation with the surface.

8 cl, 5 dwg

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: device includes a flat lattice forming device, an apparatus to feed a paper mass to a forming lattice, a thread-feeding device and a facility to create open sections on the protective thread in the form of a system of nozzles connected to a line of water supply and with an electronic device to adjust head and time of water supply to nozzles. The facility to create open areas on a protective thread is a system of two parallel rows of nozzles arranged so that the first row of nozzles along with the motion of the paper web ensures water supply at the angle of 85-110 to the paper web, and the second row of nozzles ensures water supply at the angle of 100-130 to the paper web.

EFFECT: invention makes it possible to improve quality of produce by increasing of stability in process of making open areas on a protective thread during paper making.

6 cl, 1 dwg, 4 ex

FIELD: textile, paper.

SUBSTANCE: sheet material, a protective sheet and a protected document include at least two layers applied one onto the other. Besides, the first layer contains at least one lengthy section of zero thickness, and the second layer contains at least one groove, at the same time the specified at least one groove in the second layer is arranged opposite to the specified at least one section of zero thickness of the first layer, thus forming a window. Methods relate to manufacturing of sheet material and making a protected sheet. Method to make a sheet material includes the following stages. Making the first layer of paper specified above by filtration of cellulose fibre suspension on the metal cloth of the first cylindrical shape or a forming device. Making the second layer of paper on the metal cloth of the second cylindrical shape with formation of at least one groove in the second layer. Then two layers are combined and dried. Method to make a protective sheet repeats the above-specified method with inclusion of the stage, where at least partially transparent element is fixed in the longitudinal section of zero thickness of the first layer of the sheet material.

EFFECT: expanded assortment of protected materials, improvement of their protective properties with provision of tactile effect.

43 cl, 7 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to multilayer substrate 60 and method to produce a counterfeit-protected paper. Proposed substrate consists of the first paper interlayer (10, 202) with density varying from 10 to 80 g/m2 and second paper interlayer (20, 214) with density varying from 10 to 80 g/m2, and one layer of plastic made from thermosetting polymer materials arranged between aforesaid interlayers (10, 20, 202, 214) and bound therewith. Proposed method consists in that plastic layer, as-melted, is introduced between said paper interlayers (10, 20, 202, 214) for them to be squeezed between two rolls (50) in continuous process. Said two rolls 50 are kept at temperature exceeding room temperature but lower than that plastic material melt. Paper interlayers and plastic layer are bound together due to atomic-molecular forces between said layers to produce penetration zone wherein plastic layers are bound with fibrous material of aforesaid interlayers (10, 20, 202, 214). Plastic layer density varies from 22 to 80 g/m2.

EFFECT: better counterfeit protection, longer life.

38 cl, 5 ex, 3 tbl, 4 dwg

FIELD: paper industry.

SUBSTANCE: method is intended to impart dirt and/or moisture resistance to porous substrate for protected documents, and also relates to dirt and/or moisture resistant protected document. Method includes application of dirt and/or moisture resistant compound onto opposite surfaces of porous substrate having porosity of approximately 20-100 millilitres per minutes and its impression into pores of substrate. At the same time compound penetrates and spreads at least in part of substrate thickness, then excess compound is removed from opposite surfaces of substrate. Coating press is used to impress dirt and/or moisture resistant compound into pores of substrate.

EFFECT: specified compounds applied by suggested method do not darken optically variable effects generated by non-porous film structures on the basis of microlenses, which may be used on or inside these protected documents, and thin layers of fibres applied and this introduced into parts of protective devices in protected documents containing windows with dirt and/or moisture resistant properties according to the present invention, demonstrate improved durability.

22 cl, 1 ex

FIELD: textile, paper.

SUBSTANCE: invention relates to protective strip and counterfeit-protected paper intended to make secured documents, such as treasury notes, cheques or identification documents. Protective strip consists of cellulose support cloth formed by plant fibres and is arranged with the possibility of introduction into substrate, which consists of mass including plant fibres, so that specified protective strip is hard to detach due to physical and chemical links formed between plant fibres of substrate and support cloth.

EFFECT: proposed invention provides for prevention of document counterfeiting.

13 cl, 4 dwg

FIELD: printing.

SUBSTANCE: document comprises a substrate and a protective element comprising the first and the second structures contained on the substrate. The substrate also comprises a region which is translucent or even transparent, and within which the first and second structures are located at least partially. The first and the second structures within the transparent area when the document is viewed in reflected light have at least the first and the second colours, respectively, and when the document is viewed in transmitted light, a mutual change of the said first and second colours occurs.

EFFECT: improved protection.

12 cl, 14 dwg