Cash or warranty document rectangular

 

(57) Abstract:

Usage: in the Bank tickets and guarantee documents such as identity cards, etc., the essence of the invention: improved security document printed with graphical representation due to the fact that the first sign of protection made in the form of a periodic grid of parallel lines watermark located obliquely to the edge of the document, and superimposed on the second character of the protection executed in parallel to the first edge of the document stripes printed graphic image, presents at least two different colors, moreover, the reaction of inks of different pairs of lanes, symmetric about the middle of the second edge of the document, on the electromagnetic radiation of the predetermined invisible wavelength range (e.g., infrared) different for at least one of colors, so it ensures that the binary encoding of the mentioned bands. 13 C.p. f-crystals, 21 ill.

The invention concerns money or guarantee documents related to the type of documents containing printed graphic image and safety signs, and these documents may constitute, in particular Bank notes.

is Loki, fully or interleaved hidden in a paper wrapper of this document, and, in addition, this wire can be encoded; these documents are of interest because they are well adapted to automated controls designed to detect the presence of magnetic wire in passing the document, and decoding this wire to identify the specified document.

This technology actually has limitations in relation to the efficiency of determining the authenticity of documents that encourages them to resort to complicated code.

There are also documents, safety signs which are based on the principle of changing the density of the fibers (bulk or surface mass density), with a special encoding.

It was suggested periodic dry embossing on the strip parallel to the edge of the document with the specified embossed provided in the manufacture of paper, so to change the volumetric mass along a specified band, with flattening of this band when printing the document.

Alternatively, use a sequence of stages stamping and counter-stamping forming Polo is a type of watermark type grid with watermarks, moreover, this grid can be periodic or aperiodic.

This technology, however, is limited, as it is in most cases is compulsory with respect to orientation (large or small edges parallel to the direction of passage), from the treatment of the front surface (front-back side) of the document and the direction of its bandwidth (right-left) in the machine for processing.

There is also a method of encoding a document is a sequence of strokes, some of which absorb and reflect infrared radiation, in order to determine the authenticity of these documents.

In General, these safety signs used alone or in combination with each other, while in the latter case, it was required to use different types of sensors for consistent recognition of these signs.

Currently, there is a need to improve the technology for determining the authenticity in order to counter the increasingly sophisticated technology used in the forgery of documents.

In the particular case of Bank notes must also be resolved additional problem of automatically recognizing who agnosti, trying to combine different signs of protection, on the one hand, because the technology analysis quickly becomes complicated and requires the use of various sensors, are often cumbersome and poorly compatible with each other, and on the other hand, because decisions often depend on the treatment front side and on the orientation of the document.

In addition, the machines are used for sorting, counting and/or distribution will be improved in order to improve their performance.

This explains the fact that specialists have to use the marks protection of the same type, depending on the objectives (in particular, in the case of the recognition of the authenticity or the identity of the specified advantages of Bank notes).

The subject of the invention is the production of cash or guarantee document, the signs of which simultaneously provide the best help in determining the authenticity and easy recognition.

The subject of the invention is the creation of the document, signs of protection which is designed to abstract from the directedness of the front side and on the orientation of the specified document, as well as its space, Breakfast is aetsa the creation of the document, signs of protection which would be most visible when viewed with the naked gas so as not to attract attention.

And, finally, the subject of the invention is the production of the document, which could be analyzed by means of analysis with digital processing methods that are both simple and very reliable.

The problem is solved in that the proposed cash or warranty document rectangular shape with printed graphics invention and trademarks protection, according to the invention containing two superimposed one upon the other sign of protection, each made in the form of a grid, of which the first sign of protection is in the form of a grid periodic watermark, and the second character protection is the result of the division printed graphics on the parallel bars, located and coded into binary code, symmetrically relative to the symmetry axis of this document, the wave front wave of relief this mesh watermarking takes place in a common direction, almost not perpendicular to the direction of these bands separating the printed graphic image, and overlay each other these two characters sustained fashion, to the grid of watermarks, forms the first sign of protection, would contain a wave with a sinusoidal profile of the surfaces of the mass. It really eliminates the presence of sharp contrasts at the level of the edges of the wave (in fact, square wave or rectangular shape would be more sharp and less subtle). In particular, changes in the amplitude of the wave grid watermarks are around the mid-plane of the said document that allows you to get rid of the requirements for the treatment of the front side of the document.

It is also advisable to wave to the grid of the watermarks were almost in the same direction, forming an angle of 45owith respect to the direction of the stripes division printed graphic image. So this is an opportunity to read the document, regardless of the treatment of the front surface, the orientation of the specified document from the spatial position relative to the direction of transmission.

According to another expedient distinctive feature, the grid watermark defines the surface, a closed loop which is inside edges of the said document, whereby the entire surface of the pen, to the grid of the watermark was made in the form of a square, and the dimensions of this square is preferably chosen relatively large to maintain a good flatness of the document (this problem is especially acute when using bundles or bales, containing a large number of documents), as well as to strengthen malosemenovsky this sign of protection. It is also advisable that the edges of the square were beveled in the prevents the phenomenon that is associated with the introduction at the level of the edges resulting from the enhanced contrast, which results in the invisibility of the mark protection by improving.

According to a particular variant implementation, the dividing printing graphic images have the same predetermined width e which is a function of the angle between the direction of wave propagation grid of the watermark and the direction of stripes of separation, when the specified angle b exceeds the reference angle corresponding to the width of the strip, reaching half the width of the specified document, in particular, the width e of the bands separation is given by the formula:

< / BR>
where T denotes the wavelength grid of the watermark. The identity of the Shi values which are possible encoding, this is especially advantageous when the document is a Bank ticket, this encoding allows in this case to make the recognition of the specified rank.

Alternatively, the dividing printed graphic images are the same width, depending on the desired encoding, and not from the angle b between the General direction of wave propagation mesh with watermarks and direction of the stripes of separation, when the angle b is smaller than the reference angle corresponding to the width of the strip, reaching half the width of the specified document. This is true for the case with a direction of propagation parallel to the direction of the bands split, but the technique of analysis in this case should be appropriate.

It is also advisable to drawing this document was printed using two colors of the same shade, of which one responds and the other does not respond to a predetermined electromagnetic radiation invisible wavelength range in order to determine sharing this graphic on the parallel bars.

This electromagnetic radiation may be different ve radioactive source).

In particular, the graphic image is printed with other inks that do not respond to the specified predetermined electromagnetic (e.g., infrared) radiation, the same is true for the graphics of the invention, provided on the reverse side of this document.

In the case of a document containing a graphic image printed on its both surfaces, it is advantageous that the dividing of this graphical image could be encoded on the face or on the reverse side, or on the obverse and on the reverse side of this document.

In particular, the graphic image of the specified document was printed using a pair of colors, one of which reflects infrared radiation, and the other does not.

And finally, if this document is a Bank ticket, it is advisable that the first and second marks his protection were used for determining the authenticity of the ticket, and the second character protection is also to mechanized specified recognition of the dignity of the ticket.

In Fig. 1 shows a rectangular document according to the invention, the first and second marks protection which image is AK protection of the said document, which is made in the form of periodic mesh watermarking, formed in this case in the form of a square, as it can be seen in the lumen, with the alternation of light in this area with watermarks;

in Fig. 3 in terms of front relief surface of the matrix, allowing you to stamp forming fabric in the manufacture of the document, to obtain a periodic grid of watermarks, similar to that given in Fig.2, with the sinuosity of this relief surface, in this case, sinusoidal, allows you to perform the required changes in the surface mass in this area with watermarks, edges of this matrix, also in this case, the beveled to soften the contrasts at the level of the edges of this zone;

in Fig.4 8 sections, respectively, IV IV, V, VI-VI, VII - VII and VIII-VIII in Fig.3 to better understand the structure of the relief surface of the matrix, and, in particular, its beveled edges, relative to the average plane of the specified surface;

in Fig.9 13 curves illustrating changes in the surface mass zone with watermarks, obtained using a specified matrix, and these curves correspond to the sections respectively of Fig. 4 8 (curves changes in the surface mass in the paper actually stamping);

Fig. 14 and 15 represent an illustration of the document in Fig.1 with two different types of encoding the parallel strips of the second grid, in the form in which this document adopts, for example, when viewed in the infrared radiation (for printed graphics using two colors, one of which reflects infrared light, and the other does not), in this case eight parallel lanes, coded 1 011 1101 and 0 110 0110;

in Fig.16 view of the lumen of the periodic grid of the watermark obtained above is represented by a matrix, with a square contour with beveled edges and with a special phase offset relative to the axes of the square (which preferably coincide with the two axes of symmetry of the rectangular document);

in Fig. 17 view on a larger scale, showing the area of the document, in which both mark protection superimposed one upon the other (in this case, there are six parallel strips of the second grid that intersect the area with watermarks from the first periodic grid), and from this figure it is seen that the two grids are overlaid in such a way as to provide an analysis of the document with one element, at which propuskayu parallel strip of the second grid, moreover, the specified bundle is placed perpendicular to the direction of transmission of the document;

in Fig. 19 version of the image, in which direction (DC) wave propagation mesh with watermarks is not tilted, as previously angled at 45oto the direction of travel (DD), and is parallel to the specified direction of travel, with strap with detectors in this case is made differently, with two offset rows of sensors, as can be seen in this figure;

in Fig. 20 fragments that illustrate the different configurations of the sensor bracket with Fig.13, respectively having openings in the form of inclined slits, cross holes, multiple sensors with two adjacent sensors and multiple sensors with four sensors, arranged in the shape of a square;

in Fig.21 the circuit analysis device associated with lath sensors according to Fig. 13, which shows the tools used to process signals from various sensors, in order, on the one hand, to check the encoding of the second grid and to determine the authenticity of the analyzed document, when the second grid meets the requirements, and, on the other hand, to analyze the first grid and under the

In Fig.1 shows the document 1, in this case rectangular, large side which is indicated by the numeral 2, and the small figure 3.

This document contains on one side (front or back) printed graphic image G, illustrating in this case the glider. Graphics, of course, may be provided on the other side of the document 1.

According to the invention, the document 1 contains two superimposed on each mark protection 100, 200, shown here by dashed lines.

The first sign of protection 100 is represented in the form of a periodic grid with watermarks bounded by the closed contour C, which is inside edges 2, 3 of document 1. This is the first sign of protection, therefore, is visible in the lumen and in this case contains a sequence of light and dark bands 101, 102. The appearance of these bands 101, 102 is the result of changes in surface mass in this area with watermarks.

The second character protection 200 is also made in the form of a grid, but this second sign is the representation of the printed graphic image G on the parallel bars 201, 202, which are encoded.

Strips 201, 202 are symmetric the specified document. Therefore, there is an even number of pairs of strips located on both sides of the axis X' X. the Other axis of the document denoted by Y' Y of Fig.1.

The direction of the strips 201, 202 denoted by DD and you can see that this direction coincides with the direction of passage of the document.

Since there is no need to strip 201, 202, referred to the entire document 1, Fig.1 there are two areas not covered by the coding ZL. In the case, in particular, Bank ticket, these two zones ZL can be used for numbering.

These strips 201, 202, also encoded in binary code (0 or 1), symmetrically relative to the axis of symmetry X' X document 1. Coding strips 201, 202 implemented in such a manner along the axis Y' y

In this case, it is advisable that the graphic image G document was printed using two colors of the same hue, one of which responds to a predetermined excitation, but not the other, in order to provide the specified graphic image in the form of parallel strips.

Although you can use different types of excitation (magnetic pigments, microwaves, UV radiation, radioactive source), it is advisable to choose infrared radiation is a query result pair, educated both marks protection 100, 200, in order curves response signal addressed during the analysis of the document matches at least in part.

It is preferable to select the wavelength, the smaller one micrometer, and in particular in the range between 0.8 and 1 micrometer (hence, we are talking about the lower zone of infrared radiation, which is far removed from thermal infrared region, sometimes used for the analysis of the documents in the case of wavelengths of at least 3 μm).

When a graphic image of the document is printed using two colors, one of which reflects infrared radiation, and the second does not reflect, review this document in the infrared radiation corresponds to the image, similar to that shown in Fig.14 and 15.

In Fig. 15 can consistently see the band 202, coded unit (absorbs infrared light, therefore, allows you to see considered part of the graphic image, as well as the considered part of the first grid of the watermark 100), lane 201, coded zero (reflects infrared light, therefore, masks the graphic, making it Metria encoding with respect to the axis X' X in this case entails the presence of two consequent strips 202, strip 201 and finally one strip 202.

Thus, the binary encoding is shown in Fig.14, will be expressed by the number 10111101.

In Fig.15 depicts a different encoding with the same number of parallel strips in this case, the encoding will be expressed by the number 01100110 (symmetry encoding with respect to the axis X' X fully met).

In Fig.14 and 15 provides eight parallel lanes, resulting actually have 24then there are 16 different codes.

In the more General case, when 2n bands, coded 0 or 1, there are 2ndifferent codes.

Coding by dividing the printed graphic image may refer to an obverse surface to the reverse surface or both. In the latter case, reading of the document will be facilitated if they use the same encoding on the front side and back side, and the corresponding bands in the result, directly imposed on one another, this can be advantageous insofar as it allows us to better resist the effects of aging.

In practice select the number of bands, at least equal to the number of recognized dock the Oia specified dignity analyzed ticket) while the number of bands remain, furthermore, limited technological capabilities of the analysis tools operating on very thin strips.

In addition, a graphical image may be printed on the front and/or back side) with the use of other colors that do not respond to the excitation corresponding to the encoding in the form of parallel strips (e.g., infrared radiation).

This feature can be used for Bank notes offset printing, in particular, gravure printing, making it easy to match colours, thanks to the engraved rollers (not a problem "register" with paints as used in this case, the same printing plate).

Fig.2 allows us to better distinguish the area with watermarks corresponding to the first sign of protection 100 as it is seen in the lumen.

Mesh with watermarks 100, therefore, is periodic (uniform alternation of opaque and bright zones), with period T. in Addition, as will be explained in detail below, this mesh with watermarks contains waves (i.e., has an undulating topography), which preferably have a sinusoidal profile surface layer.

In this case the specified direction DS and DD between them form an angle b, which is 45othat allows the reading of the document in two perpendicular directions (parallel to the long edge that is typically used in machines for processing, in particular Bank notes, or parallel to the short edge).

Alternatively, you can choose other values for angle b between the two specified directions, but with the loss of certain benefits. In Fig.19 shows the case when the directions of the DC and DD almost parallel, and in this case refers to the special location of the detector sensors, as will be described hereinafter with reference to this figure.

It should also be noted that in the embodiment shown in Fig.2, there is a definite shift in phase for waves of the first grid 100 with respect to the center of the square, located at the intersection of axes X' X and Y' Y of the document. The choice of such a shift in phase, in which the edge strip is applied to the center Of the square will depend on the options used analysis and related processing tools. As a result, the sensor located at a certain distance from the axes X' X for Y' Y which is in any case the most appropriate, because both are overlaid grids, namely periodic grid with watermarks 100 and coded grid 200 in the form of parallel strips separating the printed graphic image, allows in General to make an independent reading of the document (not dependent on the treatment front side of the document from its orientation and the direction of its passage).

In Fig.3 depicts a front relief surface of the matrix 110 that allows you to stamp the forming fabric in the manufacture of the document, to obtain a periodic grid of watermarks, similar to the grid in Fig.2. This relief surface has a wavy shape, in this case, sinusoidal, and extends in the General direction DC, angled at 45o.

The relief surface of the matrix 110 is thus a sequence of depressions of the protrusions 111 and 112 (better visible in cross section in Fig.4) that allow you to perform alternately light 102 101 and dark areas on the grid of the watermark 100 of the document.

Curve IV in Fig.9, showing the changes in the surface mass in the area with watermarked document (under the direction of the DC), in this case corresponds to the ISM is the amplitude of the sine wave grid with watermarks occur around the mid-plane of the document, denoted by RM (which allows you to have independence read in relation to the treatment of the front side of the document).

The period T should preferably be chosen large compared to the size of the document, for example, about 10 mm for a Bank card, ensure that the trademark protection 100 was the most visible. The same applies to the side of the square, which should be, for example, about 60 mm

The sections of figures 5 to 8 allow, in addition, it is better to distinguish specific skew edges 113 of the matrix 110. This skew is almost formed in this case or the bottom (edge 113' chamfered) or up (edge 113" chamfered) with respect to the Central plane of the relief surface of the die 110.

This is expressed bevel edges for areas with watermarks, as it follows from the curves V, VIII, illustrating the corresponding changes in the surface mass, and all this takes place on both sides of the mean plane PM of the document. The result is a square in the form of a watermark, the edge of which is made in the form of "lace", which eliminates the sharp contrast transitions around with watermarks and further improves the invisibility of the mark protection.

In Fig.16 artelino stamped by the specified matrix 110, in particular, it should be noted beveled edges 103 of the square. As for opaque 101 and bright zones 102, they correspond to what was described earlier with reference to Fig.2.

In Fig.17 shows in larger scale the area of the document 1, which marks protection 100 and 200 superimposed one upon the other.

Alternating dark and light zones in the form of strips 101 and 102 periodic grid watermark 100 have the same width, which is equal to the half period T/2 sine wave of a specified grid.

The slope of these bands 101 and 102 indicated by the angle b between the directions of DC and DD (the angle b is 45 hereo).

Fig.17 also allows you to distinguish encoded parallel strips 201, 202 second digit protection 200 corresponding to the separation of the printed graphic image.

Coded stripes have the same width e, which in most cases depends on the parameters of the grid with watermarks, more precisely from the period T and the angle b.

In Fig. 17 shows a right-angled triangle ABC, corresponding to the most appropriate structure for the reciting of the document whose hypotenuse AB corresponds to the width e of each of the strips 201 or 202, and one leg which is coherent case b, 45otherefore,

,

which corresponds, for example, the width of the bands 10 mm (six lanes), for a period in the 14,14 mm

The above attitude, however, can only be used within certain limits, that is, until, until, the angle will exceed the reference angle bocorresponding to the width of the strip e0reaching the half width of the document 1, this extreme case is almost the same as the presence of two bands that are symmetric with respect to the axis X' X.

For example, in the case of Bank ticket width of about 80 mm reference angleowould be of the order of 10o.

When the angle becomes less than the reference angle bothe width e of the strips separating 201, 202 printed graphic image is selected mainly depending on the desired encoding.

A particular case of zero angle is shown in Fig.19 strips 101, 102 first 100 stacks in this case, orthogonal to the strips 201, 202 second grid 200, and in this case to choose the width of e, which in the preferred case, is equal to the half period T/2 ( in this case, the image would correspond to the correct ruling square six orthogonal strips).

In practice, it is necessary first of vdavlenia, you can make these encoded strip, and from the stress of symmetry. This choice will also depend on the accuracy of the reading device used for the analysis of the document. Then should be possible angles , taking into account the fact that the angle at 45oprovides maximum benefits, as explained above.

Thus, the document that contains the two-character protection, superimposed on each other, 100, 200 of the above type is of interest in the extent overlap each other these two characters affect the reading of these characters individually.

Thus it is possible largely to justify the efficiency of determining the authenticity.

When the document is a Bank ticket, the first sign of protection 100 and the second character protection 200 are used to determine the authenticity of the ticket, and the second character protection 200 is used for the automatic recognition of the specified advantages of the ticket.

This variant of the method of analysis and the associated device are described below with reference to Fig.18 21.

In fact, in Fig.18 depicts the area of the document 1, in which both mark protection bedstvie detection.

Detection in this case is made in the form of sensors 300, at least one sensor on the encoded strip 201 or 202 of the second grid 200 (in this case, one per band). These tools are located along the main direction D perpendicular to the direction of DD, which is a direction of passage of the document by the reading device (direction DD is the direction of coded strips 201, 202) and with an intermediate distance d equal to the width e of the specified coded strips 201 or 202.

In addition, it is advisable that the detection means 300 were located on the middle axis (a) of the United strips 201 or 202 of the second grid 200, thus preventing any danger of distortion analysis in the event of displacement of the document relative to the sensor readout strips (may be a loss of signal due to the increased interference).

Can we talk about a single readout strip sensors which contain transmitting and receiving means, and which passes the document being parsed. Alternatively, apply two superimposed one on another readout strips, one of which contains the transmitting and the other receiving means, and between which is one of the two overlaid bars (the other is below it).

Fig.18 also allows you to understand that when the sensor 300 that is associated with the encoded strip 201 or 202, reads the minimum surface mass (sensor is located in the center of the inclined strip 102, on the axis specified band), the sensor 300 that is associated with a symmetric band 201 or 202 (conjugated band), reads the maximum surface mass (the sensor in the center of the inclined strip 101, the axis specified band), this follows from the fact that the grid structure with watermarks with sinusoidal wave profile is selected such that make waves on both sides of the axis X' X document located at the same distance from the said axis, were in antiphase.

More generally, raw materials, at any time find the relationship between the response signal encoded strip 201 and 202 and the response signal encoded symmetric band (paired bands), when the document passes under the read bar 301.

This allows us to formulate a distinctive part of the method of analysis of the document, according to which:

feature detection means 300 in the amount of at least one strip 201, 202 of the second wall 200, and these tools are installed along the main direction D, p is entrusted strips 201, 202 the specified second grid,

check the encoding of the second grid 200, summarizing the response signal from each coded zero or one strip and related symmetric her band in order to eliminate the impact of the first grid 100, and comparing the obtained results with theoretical values encoding,

evaluate the first grid of 100 by subtracting the response signals of each band not containing the coding coded 0 or symmetric her band.

According to this method, summarizing the response signal from each encoded strip and a feedback signal related bands manage to capture the signal from the first grid with watermarks, and to improve the response signal in the infrared radiation, it is preferable to use the decoding by the synchronous integration for each pair of coded bands (in this case, the pair formed the encoded strip and symmetric with her or paired band), then the mutual comparison of the obtained results with theoretical values of the encoding.

Subtracting the response signals from the pairs of strips without coding (coded 0), in particular, the levels of absorption infra/noise ratio of this grid (in practice have a signal, the amplitude of which doubled owing to the opposition of phase grid with watermarks between paired coded stripes of the same channel).

In the case of Fig.19, for which the direction of DC and DD almost parallel (both are overlaid grid form in this case, the lined grid zone with watermarks), you want to change the read bar 301.

Instead of a single row of sensors 300, perpendicular to the direction of passage of DD, in this case, the reader strap 301 contains two parallel rows of sensors 300', 300", located perpendicular to the direction of passage of DD, with one row of half placket these two rows of sensors (in this case, each contains three sensor 300' or 300") in this case, the offset relative to each other by a predetermined distance d1, which is preferably almost equal to the half wave length of T/2 of the first grid, in order to detect the contrast of the earlier phase response between sensors.

The sensors 300' or 300" same number, also located on the middle axis (a) of the United coded strips 201, 202 second grid and are located on the same p is the way to formulate a distinctive characteristic of this variant of the method of analysis, according to which:

feature detection means 300', 300" in the amount of at least one strip 201, 202 second grid 200, and these funds are placed along the main direction D perpendicular to the direction of passage of DD, and are on average axis and adjacent strips 201, 202, while on one side of the specified axis H X document 1 are located on the same line the first detection means 300', and on the other side of the specified axis X' X second detection means 300", also arranged in a line between them, but are displaced with respect to the first detection means 300' by a distance almost equal to the half wave length of T/2 of the first grid 100,

check the encoding of the second grid 200, summarizing the response signal from each band, coded zero or unit and related symmetric her band, to exclude the influence of the first grid 100, and comparing the obtained results with theoretical values encoding,

evaluate the first grid of 100 by subtracting the response signals from each band that does not contain encoding, coded zero and symmetric with her band.

In this case, in fact, uses the same process analysis for one or more channels, used for coding (band, coded zero).

This analysis process, therefore, very advantageous, as it allows dual analysis of these superimposed on each other marks protection with a single strap with sensors, and this despite the fact that overlay each other these two characters affect reading individually each of them.

This process of analysis will be explained in further detail below with reference to Fig.21, which is schematically illustrated as a single device for analysis of signals from various sensors, in order, on the one hand, to check the encoding of the second grid and to determine the authenticity of the analyzed document, when read in the grid meets the necessary requirements, and, on the other hand, to analyze the first grid and to determine the authenticity of the analyzed document, when read grid also meets the necessary requirements.

There are, of course, numerous ways to perform the readout strips, as is clear from the following examples.

Reading Planck 301 may be located at the same distance almost all overstimated holes in the form of slits 303 (Fig. 20,in this case, each slot is inclined so as to be almost perpendicular to the direction of propagation of waves of the first grid (each slit is inclined at the same angle b with respect to the direction of transmission of DD).

According to another variant, provided crosswise holes 304 (Fig. 20, b), both branches of which are respectively parallel and perpendicular to the direction of passage of the first wave of the grid. This allows to further increase the surface currents for the first grid and get a higher average value for the measured signal, as in this case, the process of integration of sampling.

According to another variant, shown in Fig.20 C and 20 d, at least one of the sensors is combined (in this case, all six sensors combined). In Fig.20, with each combined sensor 300 is formed of two adjacent identical sensors 3001located on either side of the middle axis (a) each encoded strip 201 and 202. The response signal from the sensor 300 in this case will be the sum of the response signals from both sensors 3001. In Fig.20,d each, the combined sensor 300 is formed is on the middle axis (a) each encoded strip 201 or 202, and the edges of the square are parallel and perpendicular to the direction of passage of the DD.

It is obvious that variants with Fig.20,and d can be applicable for the case with strap with two offset rows, illustrated in Fig.19, in this case with two offset rows of slots, inclined or crosswise, or with two offset rows of combined sensors.

In General, the sensors 300 or 300', 300" reading of the strap 301 preferably should be made so as to have the same gain and the same initial configuration in order to ensure the balance of the different channels.

Single or combined sensors can be photodiodes or photosensitive or more photoresistors, each of these sensors preferably connected with optical filters for full compliance with the required wavelength.

Below describes the complete device for analyzing signals from various sensors readout strips, with reference to Fig.21.

In Fig.21 shows the reader strap 301, in this case with six sensors 300 for a document with six coded stripes parallel to the direction of passage, and with three sensors symwmi paired coded bands.

The unit of analysis contains the means 400 for processing signals from the sensors 300.

These tools contain two processing units, each of which is associated with a grid of 100 or 200 of the document.

The first block checks the encoding of the second document grid, held at the level of the bracket with the sensors, and determining the authenticity of the document to be parsed when the grid meets the requirements.

The first block contains the first of all means of summation 401, associated with each pair of coded bands. The output signals correspond to the signals SA+SA', SB+SB', and SC+SC' (these amounts consist of signal and the same signal shifted by p), pre-amplified using the introduced amplifier 412. The signals are further integrating means 402, performing the integration over the entire length of the analyzed document.

The result signals 1A, 1B, 1C, related to each pair of coded bands. These signals are fed to the means of comparison 430 to compare the obtained results with theoretical values encoding the second grid of the analyzed document.

Preferably, the than these switching means (schematically depicted here in the form of switches respectively controlled by the passage of the front edge and the rear edge of the document before the stationary element, such as photodiode (as a variant, at least one of the sensors readout strips can provide the additional function of controlling the passing of the ticket, which prevents the need for a separate photodiode), in this case, the control means 408, 409 is shown schematically in the form of a Central control unit 415.

Due to this fixed element detection (built-in or stand-alone photodiode) in this case ensured by integrating along the length of the document. This is particularly advantageous in the case of Bank notes of the same width and different lengths.

Comparator 403 allows first of all to check that each value 1A, 1B, 1C truly is within the specified range, the boundaries of which are determined depending on the colors, tones in the paper and other parameters related to the current document.

Comparator 403 is equipped with an alarm contrast 410, triggered when the difference between the results is outside the specified fork. In this case, all the differences IiIjcompared with the limits of the range, and the alarm 410 is enabled if there is no paint that reacts to the stimulation.

Alternatively, contrast audio signal 410 is turned on when the relationship between the results is outside the specified range. Means comparison 403 in this case contain logarithmic amplifiers relations and the comparator range (positive or negative). In this case, all values are compared with the limits of the range. This option is preferable from the point of view of achieving symmetry results when the response signals are inverted, obtaining high sensitivity in the range of small deviations of the contrast, and the possibility of obtaining the optimal reaction of the black and minimal white.

Preferably, the first block contained the decoding means 411 after comparison tools 403, in order to identify the document, and in particular, when the document is a Bank ticket to recognize specified dignity ticket. These funds decoding 411 are in memory inequality Ii<Ifor each document, allowing you to easily identify the document being parsed.

The second block contains primarily a means of differentiation 404 associated with each punishment coded bands. Polucen the aqueous amplification using the built-in amplifiers 413. Every distinction corresponds, because of the opposite phase to mesh with watermarks twice the original signal, released from the interference caused by the pollution of the document and transparency paper.

Provide selector means 405, following along after each of the tools differentsirovaniya 404, to save only the response signals related to the bands without coding (coded zero). These means are shown diagrammatically in this case, the switches controlled by the Central unit 415, and the switch associated with the bands of SC and SC' (coded zero), here is closed.

Advantageously apply the received signals to additional funds additions 412 (because the signals coincide in phase, in fact, receive n signal where n=1, 2, or 3).

Then we introduce the tools filter 406, which allows filtering of signals with the main frequency of the first grid that allows you to isolate the useful signal. The latter serves on the means 407 identify and define the authentication in order to analyze the first document grid and to recognize the genuine document, when the grid watermark matches the specified requirements, or operator and/or means for threshold detecting nonlinear distortion, or else the detection of the number of periods.

Needless to say, that can be grouped into a single functional block means to enhance 413, summation 401 and integration 402 of the first block, and means to enhance 413 and differentiation 404 of the second block.

The described method and device analysis greatly facilitate the identification of authenticity.

In the case of forgery of a document can be not complied with the encoding of parallel strips (second grid), but in this case, the decoding circuit does not recognize the authenticity of the document, and, in addition, the reading grid with watermarks on this channel will not be possible due to the dye that is sensitive to infrared radiation. This may also be the result of fraud periodic grid of watermarks (first grid), but in this case, if the amplitude is too large, the detection is facilitated; if the phase is not observed, the signal coming out of the difference between the channels, in this case will be very weak, and if the profile is not sinusoidal, the measurement of nonlinear distortion allows discovering.

The invention is not limited to the above variants of the implementation, but on the contrary, includes the e above.

1. Cash or warranty document rectangular shape with printed graphic image at least on the one side and with two marks of protection, the first sign of protection is made in the form of a grid of parallel lines, characterized in that the first sign of protection imposed on the second character of the protection executed in parallel to the first edge of the document stripes printed graphic image, presents at least two different colors, moreover, the reaction of inks of different pairs of the mentioned bands, symmetric about the middle of the second edge of the document, the electromagnetic radiation of the predetermined invisible wavelength range different for at least one of the inks, providing a binary encoding of the mentioned bands, these grid of parallel lines of the first sign of protection made in the form of a periodic grid of parallel lines watermark located obliquely to the edge of the document.

2. The document under item 1, wherein forming the first sign of protection mesh watermarking contains wave with a sinusoidal profile of the surface of the mass.

3. The document under item 2, characterized in that the amplitude of the waves behold the UNT according to any one of paragraphs. 1 to 3, characterized in that the parallel lines of the periodic grid watermark is oriented at an angle of 45oto one of the edges of a document.

5. Document according to any one of paragraphs. 1 to 4, characterized in that the grid watermarks, forms a surface, a closed loop which is located inside the edges of the paper, while the said surface is completely crossed by bands separating the printed graphic image.

6. The document under item 5, characterized in that the grid watermark is made in the form of a square.

7. The document under item 6, characterized in that the edges of the square are made oblique.

8. Document according to any one of paragraphs. 1 to 7, characterized in that the strip of printed graphics have the same predetermined width e, which depends on the angle between the perpendicular to the parallel lines of the grid watermark and direction of the strips separating the printed graphic image, when the angle b exceeds the reference angle corresponding to the width of the strip eoequal to half the width of the document.

9. The document under item 8, characterized in that the width e of the bands printed graphic image is defined by the formula

< / BR>
where T is the wavelength of the mental images have the same width, depends only on the desired encoding, and not from the angle b between the line perpendicular to the parallel lines of the grid watermark and the direction of propagation of bands printed graphic image, when the angle b is smaller than the reference angle corresponding to the width of the strip eoequal to half the width of the document.

11. Document according to any one of paragraphs.1 to 10, characterized in that one of the above-mentioned ink absorbs electromagnetic radiation of a predetermined invisible wavelength range, and the other paint reflects this radiation.

12. The document under item 11, characterized in that the electromagnetic radiation of the predetermined invisible wavelength range is an infrared radiation.

13. The document under item 11, characterized in that the decomposition printed graphics on the coded parallel bands performed at least on one side of the document.

14. Document according to any one of paragraphs.1 to 13, characterized in that in the case when the document is a Bank card, printed graphic image includes characters dignity Bank ticket, and the decay of his printed graphics on the coded parallel strips allows

 

Same patents:
The invention relates to techniques for image recognition

The invention relates to banking technique

The invention relates to systems for the recognition of the authenticity of the documents and can be used to identify genuine and counterfeit money
The invention relates to a method of surface treatment, in particular, securities using polymer films to obtain a particular optical effect, which can serve as a basis in determining the authenticity or detect tampering

The invention relates to the issue of securities for various purposes, banking, primarily for the protection of securities and documents from possible counterfeits, as well as to give protected securities and documents of high consumer properties

The invention relates to advertising, printing, remedies securities, manufacturing labels, nameplates, stickers and labels

FIELD: paper improved through usage of watermarks and/or embossed members for strengthening of paper sheets and documents manufactured from such a paper.

SUBSTANCE: paper sheet has at least three corners and three sides connected in said corners, wherein angular strengthening watermarks are formed in each of said corners. Alternatively or in addition to it, angular strengthening embossing members are formed in each of said corners. Also, according to another version, paper sheet has at least three corners and three sides connected in said corners, wherein edge strengthening watermarks are formed in the vicinity of mid portion of each of said edges or said watermarks cover mid portion of each of said edges.

EFFECT: increased strengthening of paper sheets and improved protection of documents manufactured from said paper sheets.

21 cl, 8 dwg

FIELD: production of paper for banknotes, securities, identity certificates or other protected printed products.

SUBSTANCE: grid has filigree members fixed on grid and designed for local reducing of paper water loss for producing of filigree watermark on paper. Filigree members are made in the form of various figures, patterns, or text produced by shaped cutting from sheet material. There are through apertures and/or slots provided in body of filigree member, said apertures having cross size below 500 micron and being designed for creating zones with higher water loss. Method involves forming paper web on grid of round grid-type papermaking machine; dehydrating during pressing of paper web; forming paper on grid in order to produce filigree watermark having additional picture provided on the background of filigree watermark and having higher optical density as compared to optical density of filigree watermark.

EFFECT: increased degree of protecting paper from forgery.

4 cl, 3 dwg

FIELD: manufacture of paper, in particular, counterfeit-proof paper, and valuable document manufactured from such paper, manufacture method, cloth of papermaking machine and apparatus for manufacturing the same.

SUBSTANCE: counterfeit-proof paper has through opening made during papermaking process and free from definitely delimited edge on its edge portion. Paper may consist of two layers, first layer being provided with window formed during papermaking process. Paper comprises through opening having sizes less than window sizes. Method for manufacturing cloth of papermaking machine involves furnishing cloth with flexible or movable continuity disturbing member which prevents accumulation of pulp on cloth portion occupied by said member; forming paper web furnished with through opening; withdrawing paper web from cloth so that continuity disturbing member is deformed or sunk under cloth.

EFFECT: increased extent of protecting paper from counterfeit.

37 cl, 12 dwg, 1 tbl

FIELD: physics.

SUBSTANCE: method of marking articles illuminated with a water mark comprises steps on which an ordered regular array of particles is deposited on the article in a configuration which marks the article, where radiation with detected wavelength is diffracted on the said array. An article with a water mark made using the said method is also proposed. The method of making an article which shows an image comprises steps on which an ordered regular array of particles is deposited in an image configuration, the said particle array is covered by a matrix composition and the coating of the particle array is fixed such that the image is visible when radiation is diffracted on the said array.

EFFECT: invention can protect documents, verify the source of product, identify a product or can be used for decorative purposes.

28 cl, 6 dwg

FIELD: textile, paper.

SUBSTANCE: invention relates to pulp and paper industry, in particular to production of paper, with water sign, to make banknotes and secure documents that require higher counterfeit protection. Counterfeit-proof paper includes water signs with multitone effect, having light and dark elements, visually perceived in passing light in the form of raster image, besides, light elements are characterised by smaller weight per unit of paper area, compared to dark elements. At the same time total area of light elements of water sign, optical density of which is less than optical density of paper, makes at least 1% of total area of paper, and depth of light elements of water sign does not exceed 70% of paper thickness. Mesh to manufacture counterfeit-proof paper comprises masks to form water sign, which are solid elements arranged between perforated sections of mesh, besides, at least on one mask there are microholes with diametre of not more than 0.25 mm, and total area of microholes makes not more than 15% of overall area of mask.

EFFECT: invention increases strength of paper with preservation of good graded conveying of image tones.

4 cl, 3 dwg

FIELD: textiles, paper.

SUBSTANCE: sheet comprises a surface of the front side and the surface of the back side and at least one water mark or pseudo-water mark. And at least a part of the said water mark or pseudo-water mark is visible in transmitted light only on one side of the said sheet.

EFFECT: providing means of protection against counterfeit of valuable documents and sheets of paper, and these means can be easily seen even by nonexpert.

33 cl, 11 ex, 13 dwg

FIELD: textiles, paper.

SUBSTANCE: method of papermaking with multi-tone watermark lies in the use for casting and moulding of the paper web on a papermaking machine of the relief mask representing a partially water-permeable moulding element. The element is formed on the surface of the cylinder forming fabric, or on the dandy roll of the fourdrinier former. The mask has a variable height of the image area of the watermark, created by the relief stamping of the fabric, with electrotype and/or conjoint stamping of the fabric and electrotype and/or use of several layers of the electrotype. Individual, successive layers of electrotype in the mask can have openings which are different in the diameter and the density of location. The mask is assembled out of several layers of perforated plates of metal or plastic plates or composite materials. The paper and printing product made by the above method is claimed, which are protected against forgery.

EFFECT: expansion of technological capabilities of the method of production in the paper of the watermark with the increase in the capacity of the watermark as an element of protection against forgery.

7 cl, 10 dwg

FIELD: textiles, paper.

SUBSTANCE: method of papermaking and the method of production of the protecting element are proposed. The protrusions or recesses in the form of a light watermark are formed on a paper, and these protrusions or recesses are sealed. On some parts of the paper surface, containing the recesses, a paint layer with a negative image is applied. The paint layer covers no more than 80% of the recesses surface. The protecting element is a composite image consisting of protrusions or recesses formed on the paper in the form of a light watermark, and a paint layer with a negative image applied on these protrusions or recesses, covering not more than 80% of the recesses surface.

EFFECT: elimination of difficulties connected with printing and processing of printed products, simplification of identification of the watermark while maintaining its protective properties.

5 cl, 5 dwg

FIELD: information medium sealed up by the method of metallographic printing, method for its manufacture, as well as a printing plate suitable for the purpose and the method for its manufacture.

SUBSTANCE: the information medium, first of all a bank note, securities or a similar document, which has at least one sealed up section (13) and at least one separate section (14) practically completely encircled by this section. The mentioned section (13) and the separate section (14) are sealed up by the metallographic method, and both sections are sealed up by paint coats of a different thickness and differ from one another.

EFFECT: provided a high degree of protection against forgery of the information medium.

21 cl, 11 dwg

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

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