Protection element for valuable document

FIELD: printing.

SUBSTANCE: protection element comprises a matrix of relief lines, and each line has at least one lateral side of each of which determines the angle of inclination relative to the direction of normal to the matrix. The angle of inclination of the lateral side of at least one matrix line changes gradually along this line so as to form in the light reflection the optical effect of halftones, variable in a function of the viewing angle of the protection element.

EFFECT: proposed protection element enables to create complex patterns and identify them at any viewing angle.

29 cl, 16 dwg

 

The technical field to which the invention relates.

The invention relates to the field elements of protection for valuable documents. In particular, but not restrictive, it refers to a printed security feature for such a valuable document as, for example, fiduciary or trust document and an equivalent document.

Under "trust document" in the context of the invention refers to all the documents, such as banknotes, cheques, Bank cards, essential for transfer of sums of money.

Under "similar documents" refers to all of the state administration documents for identity cards, certificates, driver's license, such as the ID card, passport, driving license etc., this expression refers to all documents used to certify the origin of a valuable object, such as a label attached to luxury. This includes all documents used to certify the validity of the tax, such as tax stamps.

The level of technology

In the field of valuable documents, in particular banknotes, known applying one or more security elements of different nature to protect documents from tampering.

There are different types of security elements, in particular, so-called the e security features "first level". This protection element difficult to manufacture and at the same time easily identified ordinary people by simply careful consideration.

This protection element often has a relatively complex graphic image such as a barcode printing, guilloche or pattern, background notes, and is accomplished by various printing technologies such as offset printing, screen printing, gravure printing, flexography, typography and others.

The result of a combination of different printing technologies and complex graphics is a security feature with sophisticated style, weave patterns and combination of effects that are very difficult to reproduce using a widely available means of reproduction (scanners, laser or inkjet printers) and/or standard printing materials.

Among the security features of the first level from the prior art, in particular from patent document EP 1384595 known protection element containing a latent or hidden image made according to the first technology.

According to the decision of this document in accordance with the first manufacturing technology protection element perform a method of relief printing. The protection element includes the first network or matrix of lines drawn with a predetermined orientation, and a second matrix lines, prog is handled with a different orientation, for example, perpendicularly, so that the two matrices have a clear distinction. For example, the second matrix forms a pattern latent image, which may contain information, and the first matrix forms the background of the latent image.

The pattern of the latent image is not visible, if you look at the protection element perpendicular to its plane, but appears at a certain angle, namely, when the scanning observation. The relief of the protection element can be covered with paint. In addition, in accordance with this first technology can be twisted several hidden images.

In the prior art, in particular from patent document EP 1580020 known protection element containing the latent image is performed by the second technology.

According to the decision of this document, the protection element contains two separate zones, each of which contains a set of grooves, each groove has a steep slope and a gentle slope. The first zone forms, for example, the background of the latent image, and the second zone forms a figure, hidden in the background, when the protection element considered in the direction normal to its plane.

The gentle slopes of the grooves of the first set is oriented in the same first direction, and the gentle slopes of the grooves of the second set are oriented in the same second direction against the opposite first direction.

In this case, when the irradiation light source protection element reflects the light beam in two different dominant directions depending on the inclination of the slopes, so when browsing under a predefined angle between the two areas appears contrast, revealing a hidden picture.

The disadvantage of these solutions is that the need for a strong tilt valuable document to obtain sufficient contrast between the two zones and the disclosure of the hidden picture. In addition, the figure should have a relatively easy schedule, so that when scanning the observation to appear readable way.

Disclosure of inventions

Accordingly, the object of the invention is to provide a protection element of the first level, which can be identified at any angle and at the same time allows you to create complex drawings.

To solve this problem the invention provides an element of protection for valuable document containing a matrix of relief lines, and each line has at least one lateral side, each of which defines an angle relative to the direction normal to the matrix, characterized in that the angle of the side of the at least one line of the matrix gradually changes along this line thereby to form a light cut at the position of the optical effect of a halftone, changing the angle of the protection element.

Thanks to the invention due to the fact that the tilting occurs along the line, the light is reflected side of the line a few dominant directions, and the distribution of light intensity by a matrix of lines creates the optical effect of tones as a function of angle. In addition, the item provides tactile relief.

Thus, with a simple movement of the bending of the sheet with a small amplitude relative to the direction normal to the substrate of the document is achieved by the gradual spread of the sequence of contrasts from a lighter to a darker shade, each corresponding to a different light distribution that creates immediately find the dynamic effect. In addition, in the matrix form complex images with many colors, which can be introduced by variation of the inclination of the sides of the lines. The resulting image allows you to achieve additional effects compared with the solutions of the prior art and creates lagoonarium dynamic effect.

Under an optical effect halftone mean gradual gradual transition from light to a darker shade. Needless to say that in the framework of the invention between zones p is the power transition may also have zones of abrupt transitions.

In accordance with the invention, the technical problem solved by the element of protection for valuable document containing a matrix of relief lines, and each line has a side that defines an angle relative to the direction normal to the matrix, characterized in that the angle of the side of the at least two adjacent lines of the matrix gradually changes from one line to another thereby to form a light reflection optical effect of tones varying in function of the angle of the protection element.

Thus, in this case, the inclination angle is, for example, constant along each line of the matrix, but gradual changes from one line of the matrix to another, which creates a dynamic effect as a function of angle, as in the previous embodiment.

This alternative solution to the first solution of a technical problem: instead of changing the angle of inclination along the same line, the slope of the side changes from one line of the matrix to another.

You can consider this second variant implementation as a private limited example of the first variant of implementation, in which the angle of inclination along the line is so low that it can be equated to zero, and in which the angles of inclination of the two sides is toron one orientation of two adjacent lines are different.

Preferably in two variants of implementation of the matrix formed by continuous lines with a small distance between them and preferably adjacent or contiguous to each other. In addition, preferably these lines are parallel or quasi parallel straight lines (vertical, horizontal or inclined).

In another example implementation, the line can be zigzag formed by many more or less long sections, each section forming different angles with the directly adjacent areas.

In another example, execution of the line can be curved, circular, or spiral, at least on sections of lines.

Thanks to these various possible forms of line drawings can be more or less complex.

More generally, the line can be any shape with smooth or abrupt bends, open or closed, concave or convex.

Preferably the lines are constant and the same width. In versions of the width of the lines may be different and/or may change with gradual or abrupt expansion or contraction within the same line. Own characteristics of each line, such as width, length, General form, can change from one line to another.

Preferably embossed matrix is formed using the technology of gravure printing with ink or without it. Gravure printing without ink is also called the technology of dry impression. Dry the print can be performed, for example, on the substrate or the basis of the valuable document after pre-coating the first layer of printing ink. Then produce the embossed relief matrix, at least, parallel to this first layer of paint.

As an example, but not in a restrictive way, the paint is chosen from a group of colors with iridescent optical effect, paints with a variable optical effect, paints with a variable magnetic optical effect or liquid inks. Paint can also be a paint, which is not visible under white light and is visible in the ultraviolet or infrared radiation.

In this case, a variable optical effect created by the geometric elevation of each line of the matrix, advantageously combined with the optical properties of the paint from getting complicated protection element of the first level, difficult to play.

Preferably the angle of inclination is periodic or pseudoperiodic. This periodicity of the angular changes of the lateral sides of the lines allows you to create an optical effect which gradually spreads during tilting of the protection element.

In this case, the tilting can be spatially modulated by the estate thus, to encode or embed information in a line and/or in the matrix. Thus it is possible to provide the appearance of characters, complex drawings by modulation sections of lines of the matrix at a high frequency compared with the rest of the matrix.

As an example, periodic or pseudoperiodic the tilting is sinusoidal or helical, at least on the line segment.

The angle of the side of the can change from a pre-defined step along the line. It is also possible AC predetermined step change.

Preferably, each line has a second lateral side, and two lateral sides connected to the longitudinal crest line, the angle of inclination of the other side gradually changes along the line. In this case, the groove formed by two facing each other, the sides of two adjacent lines may have a constant depth.

However, you can also create a symmetrical optical effect by symmetrical changes in the angles of tilt (mirror effect) on two facing each other, the sides of two adjacent lines and/or the two lateral sides of the same line.

Preferably the lines of the matrix are adjacent to each other. Dense compression allows to enhance the optical effect type.

The element m which may contain at least first and second adjacent lines, and changes the inclination of the sides of one orientation of two lines offset from each other along the lines of.

In this case, the best way offset changes the angle from one line to another creates the effect of a gradual distribution pattern formed by the matrix at arbitrary inclinations of the protection element.

Preferably, the line width is from 10 μm to 2 mm, more preferably from 100 μm to 1 mm, Preferably line has a height of from 0 to 200 μm, preferably equal to about 100 microns. As an example, the period of change exceeds 0.1 mm, and is preferably from 0.5 to 20 mm

Preferably the matrix is covered with a protective lacquer for protection from aggressive external environment.

In addition, the matrix can be performed, at least in part on the diffractive structure, such as a holographic plot spot or band.

Further, the side or sides may have a cross section having a General curved concave or convex shape or straight overall shape of the at least one fracture convex or concave downward slope. This allows you to increase the complexity of the optical effect.

The protection element according to the invention can optionally have one or more features according to the ACLs that:

- each line has a different side, and two lateral sides connected to the longitudinal crest line, the angle of inclination of the other side is constant along the line;

two facing each other, the sides of two adjacent lines of the matrix are connected with the formation of the grooves of constant depth along the lines of;

two facing each other, the sides of two adjacent lines of the matrix are connected with the formation of the grooves of variable depth along the line, and one of the sides has a constant angle along its line, for example, equal to zero.

The invention further proposes plate for gravure printing, which has a zone designed to create print-based protection element according to the invention, the zone contains at least one engraved in the groove, the shape of the response line of the matrix element of protection.

The plate according to the invention can have one or more features, according to which:

the groove has a stepped profile;

- speed profile contains individual level not larger than 5 μm.

The invention also provides a method of manufacturing a plate according to the invention for gravure printing, containing the step of engraving plates by engraving tool, directed by the computer program, is guiding the tilting side of each line of the matrix.

The method according to the invention can have the feature according to which the engraving tool is a laser engraving instrument or precision mechanical milling.

The invention further proposes a valuable document, bearing protection element according to the invention.

Finally, the invention provides the basis for a valuable document according to the invention, in which the protection element obtained by the method of gravure printing or stamping through the plate. Embossing can be done cold or hot method.

A short list of drawings

Other features and advantages of the invention will be clear from the following description with reference to the accompanying drawings. In the drawings:

Fig.1 depicts a valuable document such as a banknote, containing protection element in the first embodiment of the invention,

Fig.2 and 3 depict the matrix lines of the protection element of Fig.1 under two angles, respectively, θ1 and θ2,

Fig.4 depicts in perspective three adjacent lines of the matrix in Fig.2 and 3

Fig.5 and 6 depict a graph of the height of the longitudinal ridge along one of the lines of the matrix in Fig.4, along which the change in the angle of one of the sides has respectively sine and triangular in nature, and Fig.5A, 5B and 6A, 6B are respective views in cross-section along the line is m a-a and b-b of Fig.5 and 6,

Fig.7 depicts in perspective three adjacent lines of the matrix according to the first exemplary embodiment of the first variant of implementation, which changes the angles facing each other of the sides of two adjacent lines,

Fig.8 and 9 depict a diagram of the longitudinal trajectory of the grooves formed by the connection of two facing each other of the sides of two adjacent lines in Fig.7, along which the angle is respectively sine and triangular in nature, and Fig.8A, 8B and 9A, 9B are respective views in cross-section along lines A-a and b-b of Fig.8 and 9

Fig.10 depicts a map of the relief engraved plates in shades of gray,

Fig.11 depicts a table comparing the shade of gray the engraving depth map in Fig.10,

Fig.12A-12D depict the depth of the grooves engraved in the plate in accordance with designations of these places in Fig.10,

Fig.13 depicts a magnified limited by the circumference of the plot in Fig.12D,

Fig.14 depicts a perspective engraving plate of the protection element of Fig.1-4,

Fig.15 depicts the trajectory of multiple grooves formed facing each other, the sides of several adjacent lines of the matrix along which the change of angle has a triangular character, according to the second exemplary embodiment of the first VA is Ianto implementation

Fig.16A-16F depict a view in cross section of the side lines of the matrix in Fig.1 in various possible examples of execution.

The implementation of the invention

In Fig.1 shows a valuable document 10 in accordance with the first embodiment of the invention. In this embodiment valuable document 10 is a bill.

As shown in Fig.1, the banknote contains in its upper left corner of the element 12 of the protection according to the invention.

The protection element 12 contains a matrix 14 embossed lines 16. Each line 16 has at least one lateral side 18, which defines the angle α1 of the angle to the normal to the plane of the matrix 14. This direction is schematically represented by the Z-axis of a rectangular coordinate system [X, Y, Z], shown on the drawings.

In the embodiment of Fig.1-4 each line 16 has a General rectangular shape, while line 16 matrix 14 essentially parallel to each other. Needless to say that is not shown in the drawings embodiment, the matrix may contain one line, for example, in the company of a spiral. In this case, the matrix is formed by multiple turns of the spiral.

In this embodiment, the angle α1 of inclination of at least one line 16 matrix 14 gradually changes along the line 16 thereby to form a light reflection optical effect halftone changing is uncle angle θ of the review of the protection element 12.

In Fig.2 and 3 shows the case of oblique observation matrix 14 adjacent parallel lines 16, which are illuminated by a light beam perpendicular to the plate 14. Generating a light beam of the light source 13 is schematically shown above the protection element 12. In this case the eye 15 of the observer is schematically shown in Fig.2 and 3 to the left. The angle θ of the review relative to normals varies from one drawing to another on the value θ1 (Fig.2) to a value of θ2 (Fig.3), and θ2 more θ1.

In the drawings it is seen that the reflection of light on the matrix 14 creates the optical effect of a halftone, schematically illustrated by changing the density of points. This optical effect of a halftone is determined by the angle α1 of inclination of the lateral sides 18 of the lines 16 of the matrix 14.

In the shown embodiment, the angle α1 of inclination of the lateral sides 18 of each line 16 changes the sine wave from the minimum value, close to 70°, in the zones Z1 of the ends of each line 16, to the maximum value of close to 90°, in the middle zone Z2 with the transition in the intermediate zone Z3. For illustrative purposes in the drawings, these angles are not shown to scale.

With close to 90° tilt light beam is essentially parallel to the direction normal to Z, is reflected by the mirror in the same direction, while when close to the 45° tilt of the beam is mirrored, essentially at a right angle.

Thus, the eye 15 of the user, alwaysgo for the protection element 12 at an angle θ1 review components, essentially, 30° to the normal, sees the bright zone (zone Z1), which correspond to the zones of the matrix 14, inclined at an angle of 75°, the dark zone (zone Z2), which correspond to the zones of the matrix 14, inclined at an angle of 90°, and the intermediate zone (zone Z3), which correspond to the zones of the matrix 14, inclined at an angle of from 75° to 90°.

Thus, in accordance with the inclination of the lateral sides 18 of each line 16 of the light is reflected in different directions, and not in one dominant direction, which creates for an observer optical effect type.

This light distribution is changed in function of the angle θ of the review. Thus, this optical effect halftone changes when the viewing angle changes from θ1 (Fig.2) to θ2 (Fig.3) and creates a dynamic effect associated with the change of the light distribution in the reflection.

In this embodiment, the angle α1 of the slope changes from pre-defined pitch P along the line 16. Preferably predefined step P is constant and has a value greater than three microns. In the embodiment, a predetermined step can be variable.

Preferably, the angle α1 of inclination of the lateral sides 18 of the line 16 is changed periodically or pseudoperiodicity. In this embodiment, the tilting is sinusoidal (Fig.2 and 3).

In Deuteronomy the fifth exemplary embodiment of the first variant implementation, it is shown in Fig.15, the tilting can be spatially modulated in frequency so that in the matrix 14 were reported. This frequency modulation can be entered into the matrix 14 are modulated on a high frequency pattern on the background, modulated at a low frequency. This figure may be an alphanumeric character.

This drawing shows that the grooves 22 follow a triangular path, containing areas of high frequency and portions of the lower frequency. In this example, the execution area E1 that contains areas of high frequency, limits the number 2, and the area E2 covers areas of middle and low frequencies. Needless to say that the zone E2 may contain one spatial frequency modulation, not multiple frequencies, as shown in Fig.15.

Preferably, the period T of variation greater than 0.1 mm and preferably ranges from 0.5 to 20 mm as an example, step R corresponds to one tenth of the period T.

Preferably, the width L of the line 16 is from 10 μm to 2 mm, even more preferably from 100 μm to 1 mm, Although in the drawings, this is not visible, the width may vary along each line 16. As an example, the line 16 may have a height H from 0 to 200 μm, preferably it is equal to 100 microns.

Various parameters can be optimized, for example, by simple experiments applying print is to achieve the desired effect.

Preferably line 16 contains other side 18V located in such a way that two sides 18A and 18B of the line 16 is connected with the formation of longitudinal ridge 20 line 16. In addition, two facing each other, the sides 18A and 18B of the two connecting lines 16 are joined with the formation of the grooves 22.

In the embodiment according to Fig.1-4 the other lateral side of 18V angle α2 of the slope is constant throughout the length of the line 16. More precisely, in this embodiment, the angle α2 of inclination relative to the Z-direction is zero and the angle α1 of the slope is sinusoidal.

In this case, the ridge 20 line 16 has a variable height in the longitudinal direction, as shown in Fig.5, 5A and 5B. This diagram shows the change of the height of the ridge 20 along one of the lines 16 matrix 14 in Fig.4. Changing the height H of the ridge 20 corresponds to a change of the angle α1 of the slope along the line 16 and, accordingly, is sinusoidal. In this case, the groove 22 has a constant depth in the longitudinal direction of the lines 16. In other examples, the groove 22 may be a variable depth in the longitudinal direction of the lines 16.

In the first example shown in Fig.6, 6A and 6B, the change of the height H of the ridge 20 has a triangular character.

In the second exemplary embodiment shown in Fig.7, the angle of the other side 18V l the NII 16 gradually changes along the line 16. For example, two facing each other, the sides 18A, 18B of the two connecting lines 16 matrix 14 are connected with the formation of the grooves 22 a constant depth along the line 16. The change of the angles α1 slope follows a spiral profile, at least on the section lines 16.

In this case, the groove 22 has a constant depth in the longitudinal direction of the lines 16, as shown in Fig.8, 8A and 8B.

This chart shows half of the two connecting lines 16, spaced from each other a distance D equal to the width L of one line in the projection on the top view. It is seen that the trajectory of the grooves 22 along lines has a common sinusoidal shape. However, as seen in cross-section, the depth of the grooves is constant along lines 16. In an embodiment, the trajectory of the grooves may have an overall triangular shape in accordance with the diagrams in Fig.9, 9A and 9B.

In not shown in the drawings, the examples of how to perform one or more lines 16 matrix 14 may have a generally curvilinear, circular, zigzag or spiral form.

According to the first described embodiment of the implementation of the sides 18A, 18B have a rectilinear cross-section. However, it is quite possible examples, in which the sides have different geometric cross-sectional shape for an even richer optical effect, creating aemula matrix 14.

In Fig.16A-16F presents various forms of possible cross-sections of the lateral sides. Thus, the cross section can contain one or two salient convex downward slope (Fig.16D, E) or concave downward slope (Fig.16A, 16B),or have a curved convex shape (Fig.16C) or a curved convex shape (Fig.16F), either parabolic or circular. In this case, the angle of the side 18 is defined as the average angle of inclination.

In the second embodiment, not shown in the drawings, the angle of each side 18A, 18B together adjacent lines 16 matrix 14 gradually changes from one line together to the other thereby to form a light reflection optical effect of tones varying in function of the angle of the protection element.

In this case, the relief plate 14 may have the same characteristics and the frequency of change of the angle, as in the first embodiment, the variable step, which here corresponds to the width of the line.

Although it is not shown in the drawings, in the second embodiment, the plate 14 can contain only one line, for example, rolled into a spiral. In this case, the tilt angle varies from one spiral to another.

In an example implementation, the matrix may contain parallel lines if the AI. The angle varies along the line, and from one line to another, i.e. in the transverse direction relative to the lines of the matrix, and not along the lines, as in the above-described embodiment.

Needless to say that the characteristics of the matrix in two ways exercise can be combined. Changing the angle of inclination of the sides of the lines of the matrix can be implemented as longitudinal and transverse lines of the matrix.

For example, in the first embodiment, the change of slope of the sides 18A, 18B of the same orientation in two adjacent lines 16 can be displaced relative to each other along lines 16.

The formation of such a protection element 12 in accordance with one or other of the embodiment is realized, for example, by gravure printing or embossing an appropriate framework document by using the engraved plate.

As an example, the protection element 12 is performed by the method of gravure printing without ink, also called the technology of dry seal.

To improve the visual effect of the element in the protection of this dry seal preferably is applied to the first pre-applied layer of ink. Next, after forming a dry impression on him may be applied another layer of printing ink with a variable optical effect.

In the example, when asked inks selected from a group of colors with iridescent optical effect, paints with a variable magnetic optical effect or liquid paints and cover this paint matrix 14. It is possible that the paint is invisible under white light and is visible in the ultraviolet or infrared radiation.

Adding ink allows you to create additional optical effect which is combined with the optical effect of a halftone generated geometric relief of the matrix 14. These printing ink, which themselves are known in the prior art include, for example, pigments with a variable optical effect changes color depending on the viewing angle. In addition, paint with a variable magnetic optical effect contain pigments capable of orientation in a magnetic field.

Printing ink contains, for example, in addition to the pigments and solvents capable of polymerization materials intended for application to a valuable document 10 using the printing method, allowing to apply a thick layer of paint, such as screen printing, flexography and heliogravure.

In another example, performing the matrix 14 is made by stamping method, a dry seal on a paper or plastic (polymer) basis. Embossed produce cold or hot method (in press). After this step, the embossing seal is full the m or partial coating of the matrix 14 ink. In this case, for printing using an ink, which can have a variable optical effect or not to have it.

The matrix 14 may be at least partially executed on the diffractive structure, such as, for example, holographic plot or strip.

The purpose of the protection element 12 protection against possible mechanical and/or chemical damage may be caused to the upper layer of lacquer is one of the methods of printing selected from the group consisting of offset printing, screen printing, flexography and heliogravure.

In Fig.10 shows a grayscale map 24 relief engraving plate 26, which allows to produce the protection element 12 shown in Fig.1-4. Each shade of gray this map 26 corresponds to the depth of the engraving on the plate 26. As indicated by using the lookup table in Fig.11, the depth scale engraving plate 26 is from 5 to 100 microns.

Engraving plate 26 is represented in cross section in Fig.14. The plate 26 will keep the matrix 30 of the grooves 28, the General form of which is the response matrix 14 embossed lines 16 of the element 12 protection. Thus, the plate 26 has an elevation opposite to the relief of the matrix 14 of the element 12 protection. In other words, the relief line 32 matrix 30 of the plate 26 forms when printing the groove 22 of the matrix 14 of the printing element 12 protection and bores the ka 28 matrix 30 of the plate 26 forms a relief line 16 matrix 14.

Fig.12A-12D illustrate the depth of the grooves 28 of the plate 26, engraved in accordance with the card 24, the areas marked on the map 24 positions 12A, 12B, 12C and 12D. It is clear that changing the depth of the grooves 28 is happening gradually.

Next will be described the main stages of the method of manufacturing engraving plate 26 in Fig.14. The method includes the step of engraving the plates 26 by means of engraving tool, which is directed by the computer program that determines the angle of the lateral sides of each of the grooves 28 of the matrix 30 of the plate 26 in accordance with the directions on the card 24.

Thus, nehruvian plate 26 is subjected to soft etching by engraving tool, directed by the computer. Stage engraving perform the functions of data in the depth map depth 24. Preferably engraving tool is a laser engraving tool. In an embodiment the tool is an instrument of precision mechanical milling.

Is a digital three-dimensional control engraving, allowing you to easily control the inclination of the lateral sides with a resolution equal to or less than 5 microns.

This groove 28 preferably has a stepped profile with the individual steps equal to 5 μm or less, as this is shown in Fig.13.

In the invention used in the advantage that this method of engraving is possible to accurately adjust the inclination of the surfaces or sides of the grooves 28 of the matrix 30 of the plate 26.

Next will be described the main aspects of the protection element 12 according to the invention.

The observer wants to verify the authenticity of the valuable document, that is, the banknote 10. To do this, it causes movement of the banknote with small amplitude around the Z-direction normal to the banknote 10 thus, in order to observe the optical effect of changing tones. Depending on the pattern of change of the slope angle of the lateral side of each line appear and gradually propagated wave and the modulations caused by these movements of the observer even for angles close to the normal to the valuable document 10.

This impression of the gradual spread of the figure is provided by the geometric figure of the relief formed by the matrix 14.

Thus, the observer quickly verifies the authenticity of the valuable document.

Although the invention is described by examples with reference to the drawings, it is obvious that those skilled in this field possible modifications within the scope of the invention.

Thus, the geometric parameters of the lines of the matrix, such as width, length, shape of the lines can be different for different lines is for one line of the matrix within the volume, defined by the claims.

1. Element (12) protection for valuable document (10) containing the matrix (14) relief lines (16), each line (16) has at least one lateral side (18, 18A), each of which defines the angle (α1) of inclination relative to the direction of the normal (Z) to the matrix (14), characterized in that the angle (α1) of inclination of the lateral sides (18, 18A), at least one line (16) of the matrix (14) gradually changes along this line (16) thus, to form a light reflection optical effect of tones varying in function of the angle (θ, θ1, θ2) review item (12) protection.

2. Element (12) protection for valuable document (10) containing the matrix (14) relief lines (16), each line (16) has a side (18, 18A), which defines the angle (α1) of inclination relative to the direction of the normal (Z) to the matrix (14), characterized in that the angle (α1) of inclination of the lateral sides (18, 18A), at least two adjacent lines of the matrix (14) gradually changes from one line to another so to form a light reflection optical effect of tones varying in function of the angle (θ, θ1, θ2) review item (12) protection.

3. Item under item 2, characterized in that the angle (α1) of inclination of the lateral sides (18, 18A), at least one of the two adjacent lines gradually changes along this line (16) in such a way that the s form in the light reflection optical effect halftone changing the angle (θ, θ1, θ2) review item (12) protection.

4. Item under item 1 or 2, characterized in that the line or lines (16) are, at least on my site, straight, zigzag, circular, curved or spiral overall shape.

5. Item under item 1 or 2, characterized in that each line (16) has a different lateral side (18, 18B), and two sides (18A, 18B) each line (16) connected to the longitudinal crest (20), the angle (α2) of the slope of the other side (18, 18V) is essentially constant along the line (16).

6. Item under item 1 or 2, characterized in that each line (16) has a different lateral side (18, 18B), and two sides (18A, 18B) each line (16) connected to the longitudinal crest (20), the angle (α2) of the slope of the other side (18, 18V) is gradually changed along the line (16).

7. Item under item 1 or 2, characterized in that the line (16) of the matrix (14) are adjacent to each other.

8. Item under item 7, characterized in that the two are facing each other the sides (18A, 18B) of two adjacent lines (16) the matrix (14) is connected with the formation of the grooves (22) of constant depth along these lines.

9. Item under item 7, characterized in that the two are facing each other the sides (18A, 18B) of two adjacent lines (16) are connected with the formation of the grooves (22) of variable depth along these lines (16), and one side of the SRT is he has a constant angle along its line, for example, zero.

10. Item under item 1 or 2, characterized in that the angle (α) of inclination is changed periodically or pseudoperiodicity with period T.

11. Item under item 10, characterized in that the angle (α1, α2) tilt one of the side walls (18A, 18B) of a line or lines (16) the matrix (14) spatially modulated in frequency along a line or lines (16) thus, in order to encrypt the information in the matrix (14).

12. Item under item 9, characterized in that the angle (α1, α2) tilt varies sinusoidally or in a spiral, at least on the line segment (16).

13. Item under item 10, characterized in that the period (T) changes greater than 0.1 mm and preferably ranges from 0.5 to 20 mm

14. Item under item 1 or 2, characterized in that it contains at least first and second adjacent line (16), and the change of the slope of the sides of one orientation of two lines offset from each other along the lines of.

15. Item under item 1 or 2, characterized in that the angle (α1, α2) slope side (18) is changed from a pre-defined step (B) along the line (16).

16. Item under item 15, wherein the predetermined pitch (P) is a variable.

17. Item under item 1 or 2, characterized in that the width (L) line (16) is from 10 μm to 2 mm, preferably from 100 μm to 1 mm

18. Item under item 1 or 2, characterized in that h is on the line (16) has a height (H) from 0 to 200 μm, preferably 100 microns.

19. Item under item 1 or 2, characterized in that the matrix (14) is made by embossing the layer of printing ink or covered with a layer of printing ink and printing ink selected from the group consisting of printing ink with optical spillover effect, printing ink, with a variable optical effect, magnetic inks with a variable optical effect, liquid printing ink and printing ink, which is invisible under white light and visible under ultraviolet or infrared radiation.

20. Item under item 1 or 2, characterized in that the matrix is coated with a protective varnish.

21. Item under item 1 or 2, characterized in that the matrix is made at least partially on the diffractive structure, such as a holographic plot or strip.

22. Item under item 1 or 2, characterized in that the lateral side or sides have a cross-section of General curvilinear concave or convex shape or a straight shape, with at least one fracture convex or concave downward slope.

23. Plate (26) for gravure printing, characterized in that it has an area to create a print-based element (12) protection described in any of the preceding paragraphs, and this zone contains at least one of digravio is nnow the groove (28), the form of the response line (16) the matrix element (12) protection.

24. Plate on p. 23, characterized in that the groove (28) has a stepped profile.

25. Plate on p. 24, wherein the stepped profile includes an individual level, not larger than 5 μm.

26. A method of manufacturing a plate (26) for gravure printing, as described in any of paragraphs.23-25 containing phase engraving plate (26) by engraving tool under computer control program that determines the change of the tilt angle (α1, α2) side (18, 18A) of each line (16) of the matrix (14).

27. The method according to p. 26, characterized in that the engraving tool is a laser engraving instrument or precision mechanical milling.

28. Valuable document, characterized in that it is equipped with element (12) protection described in any of paragraphs.1-22.

29. The basis for valuable document described in paragraph 28, the protection element which is obtained by the method of gravure printing or embossing by means of a plate (26), described in any of paragraphs.23-25.



 

Same patents:

FIELD: printing industry.

SUBSTANCE: product comprises a paper or a polymeric carrier with a protective marking applied to the extended part or the entire surface of the carrier. The marking is applied as part of the adhesive layer between the inner layers of the multilayer product and is made using a crystalline inorganic compound which is characterized by the ability to absorb optical radiation at a certain wavelength range and capable of reversible change of the optical and/or magnetic characteristic typical for the present compound, which appears under the influence of pulsed infrared (IR) laser irradiation providing localized heating to the temperature of 330-700°K and disappears after removal of the exposure.

EFFECT: increased protection level, providing the ability of automatic determining of authenticity.

11 cl, 7 ex

FIELD: textiles, paper.

SUBSTANCE: method of production of security paper consists in adding to the paper pulp of protective markers on a carrier. The carrier is used as particles or a mixture of particles of a polymeric hydrogel. The maximum particle size of the hydrogel is up to 1000 microns.

EFFECT: improved protection of valuable documents.

21 cl, 5 ex

FIELD: physics.

SUBSTANCE: laminated structure includes a layer containing a thermoplastic polymer and a layer containing a thermoplastic polymer and a black pigment as a laser radiation sensitive additive. The layer containing a thermoplastic polymer is free of laser radiation sensitive additives and the layer containing a thermoplastic polymer and a black pigment as a laser radiation sensitive additive has a thickness of 5-30 mcm and contains 40-180 ppm of the black pigment.

EFFECT: font information or an image, the definition and resolution of which are better compared to existing systems, can be incorporated into the disclosed laminated structure by laser engraving without deterioration of visual colour effect caused by intense grey colouring of the base material.

13 cl, 4 dwg, 1 tbl, 23 ex

FIELD: printing.

SUBSTANCE: in application security element is described, for information media, having a translucent base which has a first separate part with the first paint layer and a second separate part with a second paint layer different from the first paint layer. When viewed in reflected light the first and second separate parts form a continuous common site and create mainly equal visual appearance, and when viewed in transmitted light the first separate part creates the visual impression that is lighter compared to the visual impression created by the second separate part.

EFFECT: proposed security element has ease of manufacture and ease of its identification.

18 cl, 7 dwg

FIELD: measurement technology.

SUBSTANCE: polymeric film authentification method includes the stage, when the birefringence of the layer inside this film is measured, the birefringence value obtained at the measurement stage is compared with the preset birefringence value indicating the film recognised as authentic, to determine, whether the specified film is authentic or not, on the basis of the named comparison.

EFFECT: possibility of film protection without making any changes in it.

20 cl, 5 dwg

FIELD: printing.

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

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

15 cl, 5 dwg

FIELD: physics.

SUBSTANCE: invention relates to a security element having the following layers: a) a substrate, b) a first lacquer layer having a diffraction-optically active structure containing a hologram, a surface relief, a diffraction structure, a diffraction grating or kinegram, c) a second lacquer layer, e) an adhesive coating. In case of an attempt at tempering with the security element, the first lacquer layer (b) separates from the second lacquer layer (c) and the optically active structure entering the first lacquer layer (b) in both the separated first lacquer layer and the second lacquer layer remaining on the protected object becomes visible as a negative.

EFFECT: disclosed security element provides unambiguous determination of tempering with the security element.

14 cl

FIELD: physics.

SUBSTANCE: security element for identification of articles relates to counterfeit protection and authentication of securities, which can be used for concealed marking of various objects in order to prevent unauthorised production of said objects and simplify authentication thereof. The security element comprises a stack of polymer layers glued to each other, each having a certain type of semiconductor quantum rods which luminesce in different spectral regions and are oriented in directions orthogonal to each other.

EFFECT: high reliability of the security element and longer service life thereof.

4 dwg

FIELD: physics.

SUBSTANCE: protected document contains an opaque substrate, optical wave guide located on the substrate and/or in it and a coupler for light conducting into or out of the wave guide. Meanwhile the coupler has a hole passing through a wave guide and through the whole opaque substrate.

EFFECT: enhanced protection against document forgery.

15 cl, 9 dwg

FIELD: physics.

SUBSTANCE: invention relates to the method and line for fabrication of insert for a multilayer film, to the multilayer film itself, in particular to the inserts for further comprising into the smart card, where the film substrate with several electronic devices placed on it and conjugated with each other is fed to the image reader, which allows to obtain a position of an electronic device, as separate object. Meanwhile the laser sensitive levelling film is applied on the film substrate, at first is fed to the device for laser cutting, and the data on the position of the respective electronic devices on the film substrate obtained by the image reader, is transmitted into the device for laser cutting and this device is controlled for making the cut-outs aligned with the positions of electronic elements. The levelling film with cut-outs, and the film substrate in assembly section are connected and, with precise matching having aligned with reference to each other are fixed, forming an insert. Meanwhile, using the laser cutting device for making of cut-outs, and using one more laser cutting device or the marking device for each object or the group of objects on the levelling film a mounting mark is applied depending on the obtained position of the electronic device on the film substrate.

EFFECT: method improvement.

17 cl, 2 dwg

FIELD: physics, computer engineering.

SUBSTANCE: group of inventions relates to a printing layer of a security element for a data medium. The printing layer comprises elastic microcapsules. The microcapsules have inside them a cholesteric phase-forming liquid crystal which is fixed by a compressible elastomer having at least two areas distinguished by elastic properties. In an uncompressed initial state of the elastomer, the cholesteric phase on said areas has the same specified winding pitch of its spiral structure. Said areas exhibit identical optical properties. With uniform mechanical pressure on the printing layer, said areas experience different deformation and begin to differ by the winding pitch of the spiral structure of the cholesteric phase, thereby reflecting radiation of different colours. The printing layer becomes visible to a person. The invention also describes a method of making a printing layer, a security element, a data medium and a transfer element, having said security element.

EFFECT: invention provides high degree of security of a data medium.

12 cl, 6 dwg

FIELD: printing industry.

SUBSTANCE: multilayer protected composition is formed with an additional multilayer element. The element is formed on the paper surface. The element comprises a multi-colour coating in the form of periodic raster formed by at least two paints of different colours contrasting relative to the paper surface. The paints contain luminescent compounds having daily luminescence in the visible range of light under the influence of natural lighting. The combinations of paints are such that the integral colour of the additional multilayer protected element is visually perceived as unsaturated close to achromatic. One of the embodiments of the protected element forms graphic shape or is part of a graphic shape, which changes its visual display due to changing its colour grade and/or optical density and/or saturation when copying the document on a printing device operating in a colour system CMYK.

EFFECT: increased level of protection of paper or document from forgery by applying a new security feature.

12 cl, 8 dwg, 6 ex

FIELD: printing.

SUBSTANCE: invention relates to a method of production of counterfeit-proof document and/or valuable document comprising a polymer multilayer composite or consisting of it, at that the polymer multilayer composite is formed of a polymer multilayer partial composite and a polymer coating layer, and at that the polymer multilayer partial composite and/or polymer coating layer comprises a laser-sensitive component, with the following process stages: A) on the polymeric multilayer partial composite by means of jet printing the first personalised information attribute is applied in the form of a colour printing layer obtained by method of inkjet printing, B) on the printing layer obtained by method of inkjet printing a polymer coating layer is applied and by thermal lamination is connected to the polymer multilayer partial composite and C) obtained in step B) polymer multilayer composite of counterfeit-proof document and/or valuable document by means of laser engraving the second personalised information attribute is applied.

EFFECT: invention relates to counterfeit-proof document and/or valuable document obtained by such method.

17 cl, 5 dwg

FIELD: printing industry.

SUBSTANCE: invention relates to the field of protection of valuable documents against forgery and is designed for the instrument determining the authenticity of the protected printing products, such as all kinds of valuable documents. The valuable document has a marking comprising at least one inorganic compound with a crystal structure, doped with ions of rare earth elements, having the property of selective interaction with the radiation in the optical spectral range, characterised in that when exposed to radiation on it in a predetermined band of the optical spectrum the radiation of the compound only in this band of the spectrum has an excess over the temperature radiation with the final duration of 10-10 seconds and more.

EFFECT: improving the level of protection of the valuable document.

10 cl, 2 ex

FIELD: printing.

SUBSTANCE: invention relates to the field of protection of valuable documents against forgery. The valuable document comprises on its surface an invisible protective marking applied on the elongated section along the long side of the document, which is intended for the instrument reading. The protective marking has the property of selective absorption of the radiation in the range optical spectrum from 0.76 mcm to 10 mcm. The marking is wholly or partially located in the area of additional masking marking. The material of the latter has the property of re-radiation when exposed of the exciting radiation of the same spectral composition as the material of the protective marking, but is characterised with magnitude of afterglow time. The method of determining the authenticity of the valuable document comprises revealing the hidden security marking on the valuable document. The revealing of marking is carried out by registration of afterglow of its material after removal of the exciting radiation and/or by registration of the diffuse reflection of the material in the optical range of wavelengths from 0.76 mcm to 10 mcm. Violation of the predetermined information indicates full or partial forgery.

EFFECT: increase in the level of protection of the valuable document against forgery.

13 cl, 4 ex

FIELD: information technology.

SUBSTANCE: data medium has a substrate having a portion with a distinctive feature formed by a family of curves which includes a plurality of arched and/or diverging slit lines. Inside the portion with a distinctive feature there is an identification mark which is configured for visual or computer recognition and is a pattern, symbols or code. Said identification mark is formed by a portion of the substrate which does not have slits and has a family of marking curves, which includes a plurality of marking lines connected to the slit lines outside the identification mark.

EFFECT: high degree of counterfeit protection.

22 cl, 13 dwg

FIELD: printing.

SUBSTANCE: invention relates to a method and also the device for colour individualisation of security documents, as well as to security documents for colour individualisation with the body of the document. The starting materials are located inside this document body, which by localised targeted energy input are excited to create or modify the nanoparticles of different type and/or local concentration while the colour perception of the nanoparticles depends on their type and/or local concentration. For individualisation of such security document with such document body, the energy is injected locally purposefully into the place where in the document body the colour perception should be achieved in order to keep the individualising information through the achieved colour perception. At that, to achieve the colour change the dependence of absorption of light by nanoparticles on the wavelength is modified, which is not only the change in the absorption efficiency in the absorption spectrum, the colour change is due to the quantisation effect of the nanoparticles, and the colour perception is set by the energy input.

EFFECT: proposed invention provides the ability of colour individualisation of the document.

21 cl, 5 dwg

FIELD: information technology.

SUBSTANCE: graphic elements are deposited using printing techniques on one or both sides of the medium, wherein mutual arrangement thereof is such that said elements form an image having an optically variable effect. The graphic elements are deposited by scratch-off printing while meeting the following conditions: engraving groove depth should not exceed 14 mcm and the width of the graphic elements should be of the order of the thickness of the data medium. The obtained data medium retains its flatness. The thickness of the paint layer is in the range of 3 to 10 mcm.

EFFECT: high degree of protection of articles while obtaining a novel optically variable effect or movement effect, high manufacturability and low cost of the protective element.

8 cl, 10 dwg, 2 ex

FIELD: printing.

SUBSTANCE: invention relates to a method of manufacturing a security or valuable document, which includes the following steps: B) multilayer material is produced, which comprises a paper substrate, a masking layer provided on the paper substrate in the masking area, and marking substance modified by laser radiation, provided in the marked area, at that the marked area covers the masking area, and L) the multilayer material in the marked area is subjected to laser action in order to create the negative signs in the masking area simultaneously in register and discolored signs on unmasked areas of the marked area. At that before performing the step L) on the masking layer at least in the marked area the recesses are made in the form of patterns, signs or a code.

EFFECT: invention provides a high degree of protection against forgery.

25 cl, 22 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to object formed by stencils of concealed image applied on valuable printed paper, said, bank notes, stock, etc, to be protected against counterfeit. Proposed object comprises, at least on a part of substrate surface, a concealed image area located along at least a part of said concealed image and background area located against the background of said concealed image area and said outline area. In concealed image area, multiple first elements of convex or concave profile are arranged at first spacing in first direction. In background area, multiple first elements are arranged at first spacing in first direction in phase that differ from that of first elements in said concealed image area. In outline area, multiple first elements are arranged at first spacing in first direction in phase that differ from that of first elements in said concealed image or background area that adjoins said outline area. In concealed image area, background area and outline area, multiple second elements feature coloring that differs from that of substrate and are located at second spacing in second direction.

EFFECT: better protection against counterfeit.

19 cl, 80 dwg, 11 ex

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

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