Sheet material and method authenticate

 

The invention is intended for use in the manufacture of banknotes, securities, credit cards, and also for manufacturing labels for goods or packaging of goods. The sheet material includes an agent of authenticity, made in the form of fibers made of amorphous magnetic material, distributed in the mass of the sheet material. Length, width, thickness or diameter of the amorphous soft magnetic material or the values of the magnetic moments is selected in accordance with predetermined values of the distribution function. The length of the fibers of amorphous magnetic material is selected in the range of 0.5-32 mm Width of the fibers is selected in the range of 30-400 μm. The thickness of the fibers is selected in the range of 0.3 to 30 μm. The diameter of the fibers is selected in the range of 3-400 μm. The fibres are distributed in the mass of the sheet material uniformly with a density of 20-20x103g/T. Fibers made of a magnetostrictive magnetic alloy. Fibers made of amorphous magnetic material systems Fe-Co-Ni, Fe-Ni-B, Co-Mn-Si-B. Method of determining the authenticity of sheet material includes moving the sheet material with the agent authentication through a magnetic field, recording the amplitude of the response signal from each of the fibers of amorphous magnet the material determine the distribution function of the amplitudes of the response signals, and assessment of the authenticity of sheet material produced by the shape of the curve integral and/or differential distribution function of the amplitudes of the response signals. Reduces the possibility of tampering and facilitate proof of identity, as well as cost reduction in the production of sheet material. 2 C. and 7 C.p. f-crystals, 6 ill., table 2.

Description text in facsimile form (see graphic part)

Claims

1. The sheet material containing the agent of authenticity, made in the form of fibers made of amorphous magnetic material, distributed in the mass of the sheet material, characterized in that the length, width, thickness or diameter of the amorphous soft magnetic material and/or the values of the magnetic moments is selected in accordance with predetermined values of the distribution function of the electromagnetic response of the soft magnetic fibers in the mass of the sheet material to assess the authenticity of the shape of the curve integral and/or differential distribution function of the amplitudes of the response signals.

2. The sheet material under item 1, characterized in that the length of the fibers of amorphous magnetic material is selected in the range of 0.5-32 mm

3. Sheet is .1, characterized in that the thickness of the fibers is selected in the range of 0.3-30 ám.

5. The sheet material under item 1, characterized in that the diameter of the fibers is selected in the range of 3-400 microns.

6. The sheet material under item 1, characterized in that the fibres are distributed in the mass of the sheet material uniformly with density 20-20103g/so

7. The sheet material under item 1, characterized in that the fibers are made of a magnetostrictive magnetic alloy.

8. The sheet material under item 1, characterized in that the fiber is made of amorphous magnetic material systems Co-Fe-Cr, Fe-Co-Ni, Fe-Ni-B, Co-Mn-Si-b

9. The method of determining the authenticity of sheet material, comprising moving the sheet material with the agent authentication through a magnetic field, recording the amplitude of the response signal from each of the fibers of amorphous magnetic material and the assessment of the degree of authenticity of sheet material, characterized in that when assessing the authenticity of sheet material to define the distribution function of the amplitudes of the response signals, and evaluating the authenticity of sheet material produced by the shape of the curve integral and/or differential distribution function of the amplitudes of the response signals.

 

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Securities // 2170788

FIELD: designs or pictures characterized by special or unusual light effects.

SUBSTANCE: safety paper has a layer characterized by variable optical properties, made semitransparent, with transparency from 20 to 80%, and provided with coloring agent composed of optically changeable pigments.

EFFECT: enhanced protection.

1 cl, 2 dwg

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: manufacture of securities.

SUBSTANCE: metallographic printing form has printing members disposed on working surface and made in the form of deepened strokes having cross section profile of asymmetric shape with various angles of inclination of side faces.

EFFECT: increased extent of protection of securities from counterfeit.

17 cl, 4 dwg

FIELD: manufacture of securities.

SUBSTANCE: method involves providing pattern comprising combination of ink layer protrusions and slots therebetween, with width of ink layer protrusions making at least 0.5 mm.

EFFECT: increased extent of protection of securities from counterfeit.

17 cl, 4 dwg

FIELD: manufacture of securities.

SUBSTANCE: method involves providing protrusions of equal width at their base portion and of various cross section at apexes within the range of length of each protrusion.

EFFECT: increased extent of protection of securities from counterfeit.

17 cl, 4 dwg

FIELD: applicable for manufacture of paper protected against simulation.

SUBSTANCE: the paper protected against simulation, having blended fibers at least of two types that differ in their luminessent properties and form a coding or coded combination. There are at least two definite separate sections, on which blended fiber of only one type are available. The coding or coded combination is formed due to a definite geometrical layout of such separate sections on the paper protected against simulation and/or due to the presence or absence of blended fibers of a definite type. According to the second modification, similar blended fibers are present on both separate sections.

EFFECT: enhanced reliability of readout and identification at automatic control.

14 cl, 6 dwg

FIELD: chemical engineering.

SUBSTANCE: method involves using polymer material with additives as material for producing protection filaments.

EFFECT: high reliability of paper protection.

5 cl, 2 tbl

FIELD: pulp-and-paper industry.

SUBSTANCE: paper/cardboard with protection means comprises paper base and cardboard base having one or more layers of cellulose fibers and surface-processed layer adjoining at least one side of paper/cardboard base, of which layers at least one layer is part of at least one local deviation defining distinctive sign on paper/cardboard. Local deviation comprises locally compressed material and locally surface-processed layer having thickness exceeding thickness of respective surface-processed layer disposed around and outside indicated layer. Method for producing of paper/cardboard with protection means is also described.

EFFECT: increased efficiency in producing of low-cost surface- processed cardboard and paper protected from counterfeit, provision for obtaining of desirable precise distinctive signs on paper or cardboard.

20 cl, 4 dwg, 3 ex

FIELD: special-purpose paper types.

SUBSTANCE: method involves treating a part of suspension ingredients, selected from cellulose fibers or powder-like filler, with a color-producing reagent.

EFFECT: enhanced protection effectiveness; reduced reagent consumption.

5 cl

FIELD: special-purpose paper types.

SUBSTANCE: method involves applying chemical substances introduced in the amount of 0.1-1% of paper sheet weight.

EFFECT: enhanced effectiveness and high quality of protection.

4 cl, 2 dwg

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