Mix of pigment scales oriented by magnetic field and not oriented by magnetic field and applied as coat on substrate
FIELD: physics, optics.
SUBSTANCE: mix comprises first set of pigment scales oriented by magnetic field. Said scales can vary their colour from first to second colour at first change of the angle of vision. Second set of pigment scales not oriented by magnetic field that can vary their colour from said first to third colour at second change of the angle of vision other than the first one. Note here that said first, second and third colours are different colours. Scales of said first and second sets are applied on substrate in binder that makes the mix of scales. Note also that said scales have said first colour if seen on substrate at direct angle. Note also that scales oriented by magnetic field are oriented, in fact, in similar way differing from orientation of scales not oriented by magnetic field so that substrate inclination relative to first axis causes the change in seen colour from said first to said second colour. Substrate inclination relative to second axis perpendicular to first axis causes the change of colour from first colour to said third colour.
EFFECT: coat colouration changing.
8 cl, 10 dwg
The technical field to which the invention relates
This invention relates to color-changing pigment and coatings, in particular to that type which is used on banknotes, labels, securities and documents that are required to obtain an attractive protective coating or changing the color of the coating.
The level of technology
Covering, color-changing, are well known and are found on some banknotes and banknotes USA many other countries. Although the resulting printed or affixed at a high temperature diffraction patterns have the ability to change color and are sometimes considered Zlatopramen, the present invention relates generally to a color change, which is caused by interference effects from thin films; i.e. due to the multilayer thin-film coatings having a reflector, the separator and the absorber or the sequence of interference layers. U.S. patent 6236510, 5570847 and 5279657 are some examples of patents on the name of Roger Phillips describing thin-film interference scales. In U.S. patents 7258900, 7047883 and 7517578 in the name of Raksha et describes oriented in the magnetic field of thin-film pigment flakes and orientation methods such scales. All of the aforementioned patents and applications included in Dan�th document by reference for all purposes.
Application for U.S. patent US 20080069979, incorporated herein by reference, entitled “security image coated with a single coating with a visually distinct areas,” describes the security image that is formed from flakes having the first color is uniformly mixed within the framework of the flakes having the second color, different from the first. The flakes having the second color, have the ability to Orient in the magnetic field, and the flakes having the first color are non-magnetic and do not align or are not oriented in the magnetic field. When exposed to at least one area coated with a magnetic field which is essentially orthogonal to the substrate on which is deposited a coating of scales, provides a visible region having the first color, because the magnetic scales are upright and not with magnetic properties of the scales are placed flat on the substrate. In another area, which is not applied magnetic field, the visible region, having a third predetermined color different from the first or second colors. Although using this method is possible to obtain interesting effects, the present invention provides the use of a larger number of possible angles for coverage or provisions where the light strikes.
the Present invention provides the advantage of what are magnetic and non-oriented magnetic field scales have different behavior in a magnetic field. In addition, careful selection goniochromism characteristics and angle of the magnetic field lines allows to obtain a very useful protective coating that changes color when tilted from East to West or from North to South, and the protective coating has a different color when tilted from East to West or from North to South, and when you look at it at the right angle, the coating has a single color.
The aim of the present invention is to provide a coating, which shows two different effects of color changes when you look at it from two different directions and has a one color when you look at it at the right angle.
The aim of the present invention is to provide a color change between the first and second color when tilted relative to the first axis and providing a color change from first to third color when tilted around an axis perpendicular to the first axis, the first, second and third colors are three visually distinct from other colors.
Another objective of the present invention is the use of a mixture of oriented in the magnetic field of the magnetic color-shifting flakes and is not magnetic and not oriented non-magnetic color-changing scales, and red�t scales are the same in the fall light at the right angle.
Another objective of the present invention is the use of a mixture of only two different types of scales, placed and fixed in a particular orientation on the substrate, to obtain a color change from the first to the second color, or from first to third color depending on the tilt of the substrate.
Disclosure of the invention
According to one aspect of the invention provides a blend of pigment flakes containing the first set is oriented in the magnetic field of pigment flakes, which have the property to change color from a first color to a second color when the angle of view; and
the second set of scales that has the property of changing color from a first color to a third color or Vice versa when you change the angle of view, the first, second and third colors are three different colors.
According to another aspect of the invention provides a coating containing a mixture of magnetic flakes, oriented in the magnetic field, and magnetic scales, and magnetic scales change color due to the thin-film interference when the angle of view from the first color to the second color, and non-magnetic flakes change color due to the thin-film interference when the angle of view with a third color to the first color.
According to one aspect of the invention provides a pigment mixture� scales, containing the first set of non-magnetic pigment flakes (oriented parallel to the substrate) which have the property of changing color from a first color to a second color when the angle of view; and
the second set of magnetic flakes oriented in the magnetic field at an angle to the substrate having the property to change color from a first color to a third color or Vice versa when you change the angle of view, the first, second and third colors are three different colors.
Brief description of the drawings
Examples of embodiments of the invention are described in conjunction with the drawings, in which:
Fig. 1 is a graph of the color coordinates in the system Lab and color changing the color of the pigment when you change the angle in the range from 5° to 45°;
Fig. 2 - illustration of the invention, which is shown oriented in the magnetic field scales 205 and not oriented in the magnetic field scales 204, which are coplanar with the substrate;
Fig. 3 is a ray of light incident on the scales when the light source is at the point [Z, Y], and the observer is looking from the point [Z, - Y];
Fig. 4 - a ray of light incident on the scales when the light source is at the point [Z, Y], and the observer is looking from the point [Z, - X];
Fig. 5 - substrate, which are vertically arranged and lying flatwise scales, �ri light is incident at a right angle, in this case oriented and not oriented in the magnetic field scales have the same color;
Fig.6 is an illustration in which the product is tilted from the observer, as if it is rotated about the axis X shown in Fig.3;
Fig.7 is an illustration on which the product is tilted about the Y-axis, while the magnetic particles are oriented so that their plane coincide with the direction of observation, become visible;
Fig.8 is an illustration in which the magnetic particles are shown as squares with the cells of the checkerboard pattern, are particularly noticeable and the product changes color to Golden;
Fig.9a, 9b, 10A and 10b photography substrates, coated with a magnetic scales, changing the color from gold to green and not magnetic scales, which change color from green to blue, and the magnetic flakes are oriented in the magnetic field.
The implementation of the invention
The present invention provides a mixture of two types of scales: magnetically orientable flakes and not oriented in the magnetic field scales. Scales have common characteristics. Two types of scales are scales that change color as a result of thin film interference with the same at different tilt relative to the observer or when the angle of incidence of light to induce color change. In R�sive, after coating of a mixture of scales is applied to a substrate and exposing it to a magnetic field to Orient the magnetic flakes are preferred, when the inclination of the substrate from the East to the West there is a change in color from the first color to the second color, and at an inclination of the substrate from the North to the South there is a change in color from the second color to a third color, the first, second and third colors are different visually distinguishable colors.
Thin-film color changing pigments used according to the invention, belonging to the type described below have one color at a normal viewing angle and a different color at large angles different from normal. The perceived color of the pigment depends on the thickness of the separator in the optical structure of the Fabry-Perot. Therefore, the angle of incidence and angle of reflection are critical factors in the perception of color pigment when changing the thickness of the separator with increasing off-normal angle of incidence and reflection. When you angle changing the color of the pigment relative to the observer's initial pigment color gradually changes into another color. In the color coordinate system Lab color pigment varies along the curve going counterclockwise from one quarter of the space Lab to another, as shown in Fig. 1 for a hypothetical pigment that changes color with gold�on the green (101) or from green to blue (102) or from blue to red (103) when changing the angle from 5° to 45°. All the pigment particles are oriented more or less parallel to one another and the substrate and reflect incident light in the form of a bundle of essentially parallel rays.
The present invention uses a mixture of magnetic and non-magnetic pigment particles. The magnetic particles are laminated scales, which have a layer oriented in the magnetic field of the material. The mixture of magnetic and non-magnetic flakes dispersed in a binder material, preferably, an organic binder and may be applied by a printing method, as shown in Fig.2, on a flexible or rigid substrate. Ink 202 are put by a method of printing on top of the substrate 201. Ink contains magnetic particles 203 and a non-magnetic pigment particles 204. The particles may have a predetermined shape or may have a random shape. The width of the surface of the scales may have a size of from 1 µm to 100 µm. At the further formation of the coating on the substrate of the printed product is exposed to an external magnetic field in the direction 205; and all of the magnetic pigment particles are oriented parallel to the magnetic field lines and to each other in the direction of the lines of the magnetic field angle α 206 to the substrate and to the surface of the nonmagnetic particles. On the non-magnetic particles 204 there is no magnetic field, and they are parallel or nearly parallel�mi the substrate 201. As a result of the different spatial position of the magnetic and non-magnetic particles in the magnetic ink and the non-magnetic particles reflect incident light in different directions relative to the observer, as shown in Fig. 3 and 4.
Solely for purposes of illustration, oriented in the magnetic field scales are hexagonal in shape, and oriented scales 203 and 205 have a square shape. In addition, solely for purposes of illustration to visually differentiate between the two types of scales used chess and point the location of the magnetic and non-magnetic flakes, respectively. In reality, the scales are not arranged in such a way.
Fig. 3 shows that when the rays of light from a distant source 301 light located at coordinates XYZ, where X=0 into the surface of non-magnetic plates in zone 0, they will be reflected in the direction 303 to a point with coordinates XYZ, where X=0 and Y=0. Vector projection of the incident and reflected rays of light in the XY coordinates are in points A and B, respectively.
As shown in Fig. 4, light from the same light source is reflected from oriented in the magnetic field of the particles as non-magnetic particles shown in Fig.3. The light source 401 with the same XYZ coordinates, where X=0, comes into the zone 0 of the printed products along a direction 402 and is reflected from the NAC�at counterclockwise magnetic particles in the direction of 403 with XYZ coordinates, where Y=0 and X<0. The projection vector of the incident and reflected rays of light in the XY coordinates are now in a and C, respectively.
The same in Fig.3 and 4 is the direction of the incident light coming into the same area of reflection. From light reflected not inclined non-magnetic particles in the field, talking to the observer, and the reflected light focused by the magnetic field plates, changes its direction and reaches the observer, becoming invisible at certain angles of observation. The deviation of the sample relative to the X-axis by an amount of from 5° to 45°, as shown in Fig.3 and 4, will cause the color change of a non-magnetic pigment corresponding to a deviation of 0°, the color corresponding to the angle of 45°. Colors will change from gold to green to curve 101 in Fig.1, or from green to blue (102) or from blue to red (103). On a non-magnetic color effect pigment color magnetic pigment corresponding to a large angle. The deviation in the opposite direction relative to the Y-axis from 0° to 45°, as shown in Fig.3 and 4, causes a change in the color of the magnetic particles with a color corresponding to a large angle, the color corresponding to small angles. Now nonmagnetic particles reflect the light away from the observer, becoming invisible, and color of the product is determined by the magnetic pigment.
To reduce �liania color one pigment, for example, the magnetic pigment, the color of another pigment, such as non-magnetic pigment in a mixture of pigments using a common color. The example given of the pigments are shown in Fig.1. They represent the magnetic pigment 101 changing the color from gold to green, and the non-magnetic pigment 102 of changing color from green to blue, and the green is the common color for both pigments. Magnetic pigment 101 has a green color when the particles are oriented in the magnetic field at an angle of 45° to the non-magnetic particles. Non-magnetic pigment 102 of changing color from green to blue, is green when the angle is 0°, because the particles parallel to the substrate. Both have the same pigment color when you look at the product or substrate at a right angle, as shown in Fig.5. Most of the incident light rays are reflected back nonmagnetic changing color pigment particles 501, i.e., hexagonal plates with point location, with green color. Oriented in the magnetic field, the particles are green, because they are oriented at an angle of 45° to the substrate. When the product deviates from the observer, as shown in Fig.6, it is rotated about the axis X shown in Fig.3. Color non-magnetic particles, hexahedral particles with point location changes to blue according �Riva 102 in Fig.1. As noted previously, the arrangement of particles "polka dot" or in a staggered manner in the figures used to illustrate the differences between the two types of scales on the figures. Scales don't actually have this arrangement.
The tilting of the products relative to the Y-axis to the left according to Fig.7 the magnetic particles are oriented so that their plane coincide with the direction of observation, become visible. However, when the product tilts to the right, as shown in Fig.8, the magnetic particles, the squares of the checkerboard structure, become clearly visible, and the product changes color to Golden.
In the example embodiment of the invention shown in Fig.9a-10b, applied magnetic pigment, changing the color from gold to green, and the non-magnetic pigment that changes color from green to blue. The appearance of this combination of pigments shown in Fig.9a-10b. Green thumbprint containing these pigments, visible at normal viewing angle, as shown in Fig.9a. When the sample deviates from the observer, as shown in Fig.9b, the color becomes blue. The deviation back to normal angle leads to the return of green, as shown in Fig.10A. The deviation of the sample to the right changes color to gold, as shown in Fig.10b.
The mixture of color-changing pigments according to the invention can be applied d�I banknotes, labels, securities and other documents to which it is necessary to apply an attractive protective coating or changing the color of the coating.
1. The mixture of pigment flakes deposited as a coating on a substrate, comprising:
the first set is oriented in the magnetic field of pigment flakes, which have the property to change color from a first color to a second color when the first change in the angle of view; and
the second set of pigment flakes are not oriented in the magnetic field which have the property of changing color with the specified first color to a third color when the second angle of view different from the first, the first, second and third colors are three different colors;
moreover, these scales first and second sets applied to the substrate in a binder, forming the mixture of flakes;
these first and second plurality of flakes are of a specified first color when viewed on a substrate at a right angle, and oriented in the magnetic field scales are oriented essentially in the same way that is different from the orientation of the flakes are not oriented in the magnetic field, so:
the inclination of the substrate relative to the first axis leads to a change in the observed color with the specified first color at the second specified color, and
tilt �tlojki relative to the second axis, perpendicular to the first axis changes the color with the specified first color to a specified third color.
2. The mixture of pigment flakes according to claim 1, in which the first and second set of scales change color due to interference of light in thin films, and the first and second set of scales mixed together and flakes of the second plurality of flakes are essentially coplanar with the substrate.
3. The mixture of pigment flakes according to claim 2, in which the substrate is a filament, a bill or a financial document.
4. The mixture of pigment flakes according to claim 3, in which the width of the surface of the scales ranges from 1 µm to 100 µm.
5. The mixture of pigment flakes according to claim 4, in which the scales are essentially flat flakes having one or more predefined forms.
6. The mixture of pigment flakes according to claim 2, in which said mixture is ink or paint.
7. The mixture of pigment flakes according to claim 2, in which the first set of scales is up to 40-60% of the total number of scales.
8. The mixture of pigment flakes according to claim 1, in which the first set of scales is a number greater than 10,000, while the second set of scales is a number greater than 10000.
SUBSTANCE: invention relates to novel active dyes, methods of their obtaining and their application in dyeing or printing textile fibrous materials. An active dye of formula in which B represents a radical of formula -CH2-CH(R12)- or -(R12)CH-CH2-, in which R12 represents C1-C4alkyl, R5 represents hydrogen or sulpho, Z1 represents a fibre-reactionable group of formula -SO2-Y (3a) or -NH-CO-(CH2)l-SO2-Y (3b), R7 represents amino, R8 represents C2-C4alkanoylamino or ureido, X1 and X2 represent, each independently on the other, fluorine or chlorine, k equals a number 2 or 3, l equals a number 2 or 3 and Y represents vinyl or β-sulphatoethyl.
EFFECT: invention makes it possible to obtain the improved active dyes with high reaction ability, chemical affinity, as well as with good dyeability with a high degree of fixation.
8 cl, 2 tbl, 8 ex
SUBSTANCE: invention relates to compositions for obtaining electroconductive coatings on substrates surface. Described is a printing composition for obtaining the electroconductive coatings based on silver particles dispersed in water. The composition contains: a) from 5 to 40 wt.p. of metal silver particles with an effective diameter from 10 to 150 nm, with the silver particles having bimodal distribution of particles by sizes; from 50 to 99.5 wt.p. of water and, if necessary, to 30 wt.p. of a solvent; c) from 0.01 to 15 wt.p. of a dispersing agent; d) from 0 to 5 wt.p of additives; e) from 0 to 5 wt.p. of electroconductive, if necessary, water-soluble, polymers; f) from o.5 to 5 wt.p. of a thickening agent; g) from 30 to 70 wt.p. of silver particles or silver-coated copper particles with an effective diameter from 500 nm to 10 mcm. The composition has a viscosity, at least, 1 Pa·s. Also described is the application of the composition for obtaining the electroconductive coatings, method of obtaining current-conductive paths and a polymer substrate with the electroconductive coating from the claimed composition.
EFFECT: invention provides an effective elctroconductivity of electroconductive structures on thermally stable surfaces with the application of offset printing and screen printing.
15 cl, 2 ex
SUBSTANCE: invention can be used for inkjet printing. A porphyrazine colorant or its salt is represented by formula (1), where rings A-D each independently represents a benzene ring or a 6-membered nitrogen-containing heteroaromatic ring. E represents alkylene, X represents sulfo-substituted group aniline or the like, which can additionally have a substituent, R1 represents C1-C6 alkyl group, b equals to 0.00 or more and less than 3.90, as the average value, c equals to 0.10 or more and less than 4, as the average value, and the sum of b and c equals to 1.00 or more and less than 4.00, as the average value. The composition of colorant for inkjet printing, which contains the porphyrazine colorant or its salt.
EFFECT: invention makes it possible to obtain the composition of a colorant, which has good shade, possesses excellent properties of various types of resistance, in particular, ozone resistance, provides a possibility of high density of printing, possesses properties which almost do not produce a bronze tint effect.
21 cl, 5 tbl, 17 ex
SUBSTANCE: invention relates to an ink set containing chromophoric metals for digital printing on ceramic materials. The ink set comprises liquid colouring compositions (A), (B), (C) and one from (D) and (E). The (A) comprises at least a compound of cobalt. The (B) comprises at least a compound of iron. The (C) comprises at least a compound of a metal selected from chromium, nickel and their mixtures. The (D) comprises at least a compound of cobalt and at least a compound of iron. The (E) comprises one or more compounds of zirconium. The said metal compounds decompose at a temperature of from 500 to 1300°C. When interacting with the ceramic material the metal compounds of compositions (A)-(D) form colured oxides or colured compounds. The compounds of zirconium from the composition (E) with the ceramic material form white oxides or white compounds. Also the method of decorating ceramic materials by digital printing using the specified set of ink and the decorated ceramic products produced using this method are described.
EFFECT: invention provides ceramic materials decorated with digital printing of wide range of colours with the effect of natural stone.
11 cl, 45 tbl, 5 ex
SUBSTANCE: invention relates to conductive pastes for forming metal contacts on the surface of substrates for photovoltaic cells. The conductive paste is substantially free of frit glass. According to one version of the invention, the conductive paste contains organometallic components which form a solid metal oxide phase upon firing and conductive material. The organometallic components are selected from a group which includes metal carboxylates or metal alkoxides, where the metal is boron, aluminium, silicon, bismuth, zinc or vanadium. According to another version, the conductive paste includes multiple precursors which form conductive elements upon firing or heating. The paste is adapted for adhesion to the surface of a substrate and upon firing, forms a solid oxide phase while forming an electrical conductor from conductive materials on the substrate.
EFFECT: use of said conductive paste in a line of a conductive array of photovoltaic cells provides high efficiency and fill factor of the photovoltaic cell.
14 cl, 2 tbl, 2 ex
SUBSTANCE: composition for making sensor coatings contains antimony-doped tin dioxide of the formula SbxSn1-xO2, where x=0.1-0.3, and water in ratio SbxSn1-xO2:H2O = 89-87:11-13 wt %. The method of preparing the composition involves hydrothermal treatment of tin and antimony hydroxides at 170°C for 48 hours. The tin and antimony hydroxides are obtained by dissolving Sn and Sb metal in concentrated hydrochloric acid, 18-20 wt %, while adding 3-5 wt % concentrated HNO3. The obtained solution is 2-3 times diluted with distilled water and a calculated amount of ammonia solution is added. Using a simple scheme, the disclosed method enables to obtain nanoparticles of said composition SbxSn1-xO2 with size of 30 nm and surface area of 154 m2/g, which can be used as the basic component of electroconductive ink for printing sensor arrays and microcontacts.
EFFECT: low labour and power consumption.
3 cl, 6 dwg, 3 ex
SUBSTANCE: conductive paste contains frit glass, a conductive material, an organic medium and one or more organometallic components which form metal oxides when burnt. The organometallic components are selected from a group comprising a metal carboxylate and a metal alkoxide, where the metal is boron, aluminium, silicon, bismuth, zinc or vanadium. When deposited on antireflecting coating on a substrate, the conductive paste is capable of penetrating the coating to form an ohmic contact with the substrate. Described also is a photovoltaic cell, having a semiconductor substrate, an antireflecting coating and lines of a conductive mesh formed from said conductive paste.
EFFECT: high efficiency of the photovoltaic cell, improved adhesion and ohmic contact between metallic elements and the substrate through antireflecting coatings.
10 cl, 1 tbl, 2 ex
SUBSTANCE: present invention relates to use of a composition which contains: a) 0.1-20 wt % binder which contains a polycarbonate derivative based on geminally disubstituted dihydroxydiphenyl cycloalkane, b) 30-99.9 wt % solvent, c) 0-10 wt %, with respect to dry mass, dye or mixture of dyes, d) 0-10 wt % functional material or mixture of functional materials, e) 0-30 wt % additives and/or auxiliary substances or a mixture thereof, as jet printing ink. The invention also relates to a method of producing a composite and a composite which contains a polymer layer on which there is a jet printing layer of said composition.
EFFECT: invention is aimed at producing agents which enable to use jet printing in making counterfeit protected documents and/or valuable documents based on polycarbonate layers, and which enable to deposit jet printing layers on layers which meet all optical requirements, which can be coloured, wherein lamination does not deteriorate optical properties of the layers and said layers do not act as a separating layer and facilitate formation of a monolithic composite.
31 cl, 2 tbl, 2 dwg, 8 ex
SUBSTANCE: invention relates to jet printing inks, particularly non-aqueous inks for jet printing. The ink for jet printing contains a pigment, binder, polyetheramide resin as a pigment dispersant, an organic solvent and an anti-corrosion agent from an imidazole group or a group of volatile anti-corrosion agents, preferably dicyclohexylamine or cyclohexylammonium cyclohexylcarbamate.
EFFECT: disclosed inks have high dispersion stability and prevent corrosion of print heads of jet printers and nozzle clogging.
8 cl, 8 tbl, 34 ex
SUBSTANCE: marking element is made in form of woven tape, formed by interlacing of main threads from thin poorly melting wire and weft threads of two types: glass threads of white colour and carbon threads of black colour, forming straps with specified combination, read by scanner. Application of fire-resistant threads in woven tape gives advantage of reliability of information storage under conditions of fire impact.
EFFECT: increase of protection of marking element against counterfeiting.
FIELD: physics, optics.
SUBSTANCE: invention relates to a multilayer body having a transparent first layer. In the transparent first layer, a plurality of microlenses, arranged according to a microlens grid, are imprinted in a first region. The multilayer body also has a second layer under the first layer and in a fixed position relative to the first layer and has a plurality of microimages arranged according to a microimage grid and in each case at least with local overlapping with one of the microlenses from the microlens grid in order to generate a first optically variable information element. The grid spacing in the microimage grid and in the microlens grid in each case in at least one spatial direction is less than 300 mcm. The second layer has in a first region at least one first area having microimages, and has at least one second area having optically active surface structures for forming a third optically variable information element, different from the first optically variable information element.
EFFECT: improved security.
32 cl, 14 dwg
SUBSTANCE: security document comprises a substrate coated with a film element. The film element comprises a security feature such as a diffraction structure, such as a hologram. For quick identification of the remote film element using the conventional detecting devices the marking intersecting film element is printed between the lower surface and the substrate, at that the marking is at least partially overlapped with the film element. At that at least a part of the marking is printed on the substrate and for the said part of the marking printed on the substrate, adhesion of the marking to the substrate is weaker than the adhesion of the marking with the film element.
EFFECT: improvement of the document security.
15 cl, 2 dwg
SUBSTANCE: security element is proposed, which has at least a first luminophor and a second luminophor which are characterised by the presence of substantially equal common band of emission. Each of the two luminophors is characterised by the presence of at least one excitation band that leads to emission of radiation in the common band of emission, i.e. both luminophors are selected so that they are at different excitation capable to emit radiation on at least one common wavelength, and for each of both luminophors there is at least one wavelength on which the excitation is possible, accordingly, of only one luminophor, and excitation of the other is impossible.
EFFECT: proposed protective element increases the degree of protection against counterfeiting of valuable documents.
18 cl, 24 dwg, 2 tbl, 4 ex
FIELD: physics, signalling.
SUBSTANCE: disclosed is a method of making a security element having a base with at least one hole which is closed at one side by at least a partially translucent or transparent film. A coating is deposited on one side of the base, and a through-hole is made in the base and the coating and the back side of the base is coated with at least a partially translucent or transparent film, as a result of which the hole is closed at one side by at least partially translucent or transparent film, and the coating on the base is primarily located in an area of the surface occupied by said film.
EFFECT: method improves counterfeit protection of the security element.
19 cl, 7 dwg
FIELD: physics, optics.
SUBSTANCE: described is a security element for a counterfeit protected article, having an upper side and a lower side, as well as one or more imaging optical systems, each forming an enlarged image of the associated object only in the space before the upper side of the security element. One optical system or at least one of the optical systems has multiple reflective imaging microelements arranged in two-dimensional space in the form of a first drawing, said microelements being in the form of concave micromirrors. The object associated with the optical system is in the form of a microrelief object formed by multiple microrelief structures which are arranged in the form of a microrelief drawing, matched with the first drawing such that the reflective imaging microelements form an enlarged image of the microrelief object in the space before the upper side of the security element, which has at its upper side and its lower side an adhesive layer which enables to embed the security element into the counterfeit protected article with adhesion thereof to the upper side and the lower side of the security element.
EFFECT: improved security.
13 cl, 6 dwg
FIELD: textile, paper.
SUBSTANCE: invention aims at creating a document containing a transparent or semi-transparent reach-through window representing a layered polymer structure containing printing, optical, diffraction, holographic and other protective elements. A polymer layered composite for a document of value contains at least two coupled layers; at least one of the above layers contains an information sign visible through a free end of the second layer. Certain layers are made of a photopolymer materials and have different photosensitivities; some of the above photopolymer layers contains the information signs different from those appeared in the other layers. Each of the information signs become visible if arranged at a specific angle of view in transmitted or reflected light. Presented is the document of value containing protective elements presented by one or more described polymer layered composites mounted as inserts into marked segments of the document of value.
EFFECT: simplifying the document technology and reducing the production cost of end products.
10 cl, 1 dwg
SUBSTANCE: disclosed is a protective mark having a layer with a concealed polarisation image and a reflecting layer. The layer with the concealed polarisation image has isotropic and anisotropic regions; the layer with the concealed polarisation image is a dichronic light polariser based on organic layers of dichroic anionic dyes, and the layer with the concealed polarisation image has phase polarisation capability.
EFFECT: high level of counterfeit protection while providing a cheap and reliable method of authenticating marked articles.
26 cl, 4 dwg
FIELD: physics, computer engineering.
SUBSTANCE: disclosed protective device with indication of unauthorised tempering is based on the principle of creating one or more synthetic images. The device is an optical film material which consists of at least one layer containing focusing elements, at least one layer containing image elements and at least one optical splitter or a layer of splitters located between at least one layer of focusing elements and at least one layer of image elements. The focusing elements form one or more synthetic images of at least part of the image elements. The image elements are microstructures in the form of voids or depressions in a polymer substrate, or in the form of protruding portions or moulded columns. The device splits up or delaminates upon an attempt at separating the device from the main material, making the device partially or completely non-operable.
EFFECT: disclosed group of inventions provide protection from unauthorised tempering.
43 cl, 17 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to sandwiched body including first ply with multiple first zones separated by one or several translucent second zones. This body has second ply of translucent material, second ply being arranged under first ply and reflecting ply being located under second ply. Second ply has multiple third zones wherein every microstructure is embedded in the boundary, sideways from first ply, between first ply and reflecting ply coated with reflecting ply. Every microstructure is configured to reflect backward and/or to diffract light backward falling perpendicular to the plane covered by first ply in direction from first ply located in the zone of third zone to first ply area. First ply area is smaller at least 10 times than that of appropriate third zone. Microstructures are arranged in compliance with microstructure grid where spacing between adjacent microstructures in second spatial direction makes less than 300 mcm.
EFFECT: perfected design.
53 cl, 14 dwg
FIELD: processes of making protecting members such as filaments for protection against counterfeit of valuable papers, possibly determination of authenticity of bank notes and other bank-papers and credit documents.
SUBSTANCE: protecting magnetic filament includes polymeric film base onto which laminate structure of protecting means is formed. Such structure includes first masking layer of metallic material applied on base and successively arranged layer of magnetic material to be detected, additional masking layer of metallic material and outer covering film layer of polymeric material. First masking layer is arranged between surface of polymeric film base and layer of detected magnetic material whose characteristic magnetic parameters are limited by respective values: 0.1 Oe < Hc < 1 Oe; Hc/Hs ˜= 0.95 -0.98 where Hc - coercive force of magnetic material; Hs - saturation field of magnetic material.
EFFECT: enhanced degree of protecting valuable papers.
3 cl, 4 dwg