EA011271B1 - Anti-forge material distributed anti-fibers having visual characters capable of preventing imitate of printing - Google Patents

Abstract

An anti-forge material is disclosed. Anti-fibers (2) are distributed on the anti-forge material. Part surfaces (3) of the anti-forge fibers (2) are located on the surface (1') of the anti-forge material (1), wherein said part surfaces (3) have concave-convex sheltering structure, and at least two color patterns (A, B) are distributed on the surfaces. Said at least two color patterns (A, B) have distinct visual difference on the said part surfaces (3), resulting that the color patterns (A, B) can be seen from the surface (1') of the anti-forge material (1) respectively when observed from different angle. Due to the visual difference according to the present invention is formed by shielding the patterns distributed on the part surfaces (3) of the anti-forge fibers (2) in the anti-forge material with the concave-convex sheltering structure, the exact printing is unable to imitate the three-dimensional structure. Therefore the present invention is capable of preventing imitate of printing effectively.

Description

The present invention relates to a fake-protected material, for example tamper-resistant paper, or tamper-resistant film, or tamper-resistant packaging, in particular to tamper-resistant material with distributed tamper-resistant fiber having visual characteristics that cannot be counterfeited by printing .

BACKGROUND OF THE INVENTION

Counterfeit paper made with dyed fiber added to paper has a long history of nearly one hundred years, and has been used in many countries for the manufacture of paper money up to the present, as well as for the manufacture of securities, receipts, technical specifications for products, label printing, etc. In the manufacture of almost all paper money, in particular, fluorescent fiber is used. In short, there are generally two types of fibers that protect against counterfeiting, namely: a single fiber of the same color and a single fiber of several colors. In the patent of the People's Republic of China ΟΝ 02168121.0 ("Anti-counterfeiting fiber") a single fiber is disclosed with sections of several colors, that is, at least two colors are present in the direction of its length. In the patent of the People's Republic of China ΟΝ 02170092.4 (“Anti-counterfeit fiber and anti-counterfeit paper made from it”), a fiber with different colors is disclosed on its upper and lower surfaces, i.e. the fiber cross-section is oval, and there are two surfaces, an upper and a lower, corresponding to an oval, and there is a clear color difference between the two surfaces. When this fiber is added to the pulp to produce tamper-resistant paper, the upper and lower surfaces of the oval fiber will be parallel to the surface of the paper when reacted with cellulose. If the paper is thin or transparent and if one fiber is visible in the paper, its one color is displayed on one surface of the paper, and its second color is displayed on the other surface of the paper. However, the color fiber mentioned above has the disadvantage that the visual effect can be falsified by printing a thin line, and if you need to accurately distinguish whether it is fiber or a printed thin line, the only way is to tear the paper or poke it with a needle for further study. This is not only inconvenient, but also impossible in the case of paper money, securities, etc., which are of value, since they deteriorate. Therefore, the effectiveness of such anti-counterfeiting protection is limited, and any fraudster can easily achieve counterfeit success by printing a thin line.

In the patent of the People's Republic of China ΟΝ02146589.4 (“Material protected from counterfeiting and document made of it, protected from counterfeiting”), a fiber protecting against counterfeiting is disclosed, which is a thread having an axial length and a round or almost round cross section, characterized in that said thread has in its cross section two or more colors, and the axial colored part for each of these colors passes axially in a spiral. If you look at any changing angle of view, a simple person cannot notice changes in the color pattern on the fiber by eye; therefore, it is an almost visual characteristic of a flat pattern and can be successfully falsified by the method of accurate printing within the limits of accuracy distinguishable by eye.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a counterfeit-resistant material that has a counterfeit fiber distributed over it, on which, when changing the angle of view relative to the fiber, different color patterns can be observed and the visual characteristics cannot be faked using current printing technologies.

Another objective of the present invention is the creation of anti-counterfeiting fibers. When the surface of its special part is displayed on at least one surface of the material protected from counterfeiting, on this surface the observer can respectively and separately see different color pictures on this special part from different angles of view. Moreover, if it is used in a material protected from counterfeiting, counterfeiting using current printing technology is not possible.

In addition, several anti-counterfeiting fibers are provided, and in the manufacturing process of the anti-counterfeiting material, the surface of the special part of these anti-counterfeiting fibers can naturally be displayed on at least one surface of the anti-counterfeiting material. This special part allows the observer respectively and separately to see different color patterns on this special part from different angles of view. At the same time, if they are used in a material protected from counterfeiting, counterfeiting using current printing technology is not possible.

The first objective of the present invention is achieved thanks to a counterfeit material in which the counterfeit fiber is distributed, the partial surface of the counterfeit fiber being displayed on the surface of the counterfeit material, characterized in that said partial surface has a concave-convex protective structure in which at least two color patterns A and B are distributed, at least two color patterns A and B are indicated on said partial top the features have a noticeable visual difference, therefore, on the surface of the material protected from counterfeiting with the indicated frequency

- 1 011271 of the surface, if you look at the specified partial surface at different angles of view, you can respectively see color patterns A and B.

At least two color patterns on the counterfeit fiber distributed in the proposed counterfeit material include color patterns that appear in visible light, in ultraviolet, infrared, and other rays of the invisible spectral regions. In the case of color patterns appearing in visible light, the proposed anti-counterfeit material can provide a check for counterfeiting of the first level, i.e. check with the naked eye. In the case of color patterns appearing in ultraviolet, infrared, and other rays of the invisible regions of the spectrum, they can be judged using special instruments necessary to perform a check for falsification of the second level. Since the proposed anti-counterfeiting material distributes a very thin anti-counterfeit fiber (typically a fiber diameter of less than 100 μm) on which a concave-convex protective structure is located, and a concave-convex protective structure is located on said partial surface of the counterfeit fiber, and this the partial surface 3 can be displayed on at least one surface of the anti-counterfeit material, and there is a noticeable visual difference between the at least two color patterns on the indicated partial surface, and due to obscuring with a concave-convex structure, the observer can respectively and separately see different color patterns on the partial surface on the surface of the material protected from forgery at different viewing angles, so that an anti-fake effect can be achieved. Since such a visual difference is achieved through the use of a concave-convex screening structure designed to obscure patterns distributed on a partial surface of the anti-counterfeit fiber in the anti-counterfeit material, it is impossible to accurately fake such a stereo structure using printing technologies, no matter how accurate they are. Thus, the present invention can effectively prevent any fake using printing technologies.

The visual difference lies in the variety that is provided by color patterns, respectively, and separately visible due to the fact that at least two color patterns on counterfeit fibers distributed in the proposed counterfeit material are obscured by a concave-convex structure. In this case, it is possible that there are at least two angles of view “a” and “b” on the surface of the material protected from counterfeiting with the display of the indicated partial surface. The color pattern A can be seen if you look at the indicated partial surface of the anti-counterfeiting fiber at an angle of view “a”, but you cannot see the color pattern B because it is obscured by a concave-convex obstructing structure on the partial surface of the anti-counterfeit fiber. The color pattern B can be seen if you look at the indicated partial surface of the anti-counterfeiting fiber from the angle “b”, but you cannot see the color pattern A, since it is obscured by a concave-convex structure on the partial surface of the anti-counterfeit fiber. In addition, a different visual effect is possible, produced with incomplete obscuration of one color pattern, but with complete obscuration of another color pattern. In addition, a visual difference can be obtained by abrupt visual change in the length direction of the anti-counterfeiting fiber caused by the screening. In embodiments, each of the differences will be further explained in detail with reference to their figures.

Another objective of the present invention is achieved thanks to a counterfeit fiber introduced into said counterfeit material having a partial surface that can be displayed on one surface of said counterfeit material, characterized in that said partial surface has a concave-convex protective structure at least two color patterns A and B distributed on a partial surface, wherein two color patterns A and B on said partial surface have ametnoe visual difference that allows a person respectively see the color patterns A and B, when viewed on said partial surface at different angles on the protected against forgery material displaying said partial surfaces. Due to the concave-convex screening structure located on the proposed anti-counterfeiting fiber, and the concave-convex screening structure located on a partial surface of the counterfeiting fiber that can be displayed on one surface of the counterfeit material, and due to the screening of the concave-convex screening structure, the observer can respectively and separately see this special part at different angles of view on a special surface - color drawings with visual differences partial surface. Thus, when used in a material protected from counterfeiting, such a visual difference caused by its stereo structure cannot be faked using current printing technologies.

In fact, the object of the present invention to display a special part of the counterfeit fiber on at least one surface of the counterfeit material is to direct a specific surface of the counterfeit fiber toward the visible surface of the counterfeit material. Based on theoretical analysis and practical experiment, the surface of the anti-counterfeiting fiber parallel to max

- 2 011271 of the projection of the anti-counterfeiting fiber, can naturally be displayed on at least one surface of the anti-counterfeiting material. There are three ways to achieve this.

The first method: apply a flat transparent material to the outside of the anti-counterfeiting fiber and simultaneously rotate the indicated partial surface of the anti-counterfeiting fiber towards the flat surface of the transparent material. Moreover, the flat surface of the flat fiber can naturally be parallel to the visible surface of the anti-counterfeit material in order to make the necessary partial surface displayed on the visible surface of the anti-counterfeit material.

The second method: to bend or bend the anti-counterfeiting fiber at the same time with a certain stiffness and position the indicated partial surface on a bent or curved outer surface. In this case, the anti-counterfeit fiber can be displayed on the visible surface of the anti-counterfeit material in its self-bent or self-bent state.

Third way: cross-section all or part of the length of the anti-counterfeit fiber of a flat shape, place the indicated partial surface of the anti-counterfeit fiber on a flat surface on a flat part of the cross-section or on the surface of the anti-counterfeit fiber having the same direction as the flat surface .

In the case of a fiber with a flat cross-section along its entire length, a flat surface may face the visible surface when it is naturally added to a material protected from counterfeiting. In the case of a fiber with a flat cross-section, a flat part may face the visible surface over part of its length. The rest of it in the same direction as the flat surface can naturally follow towards the visible surface.

Description of graphic material

FIG. 1 is a drawing of a proposed schematic structure;

FIG. 2 - drawings of color drawings A and B, distributed in the length direction of the anti-counterfeiting fiber and with a parallel arrangement in the anti-counterfeiting fiber:

FIG. 2a is a horizontal plan view, FIG. 2b is a cross section;

FIG. 3 is a drawing of color patterns A and B distributed on a counterfeit fiber with a parallel arrangement, but at an angle to the length direction of the counterfeit fiber;

FIG. 4 is a side view of color patterns A and B on a counterfeit fiber distributed in the length direction of the counterfeit fiber;

FIG. 5a-5d are drawings of color patterns A and B on counterfeit fiber distributed radially, extending axially and in different positions in the length direction;

FIG. 6 - drawings of the cross section of the anti-counterfeiting fiber in the form of a single triangle in a material protected from counterfeiting:

FIG. 6a is a cross section, FIG. 6b is a drawing in horizontal projection;

FIG. 7 - drawings of the cross section of the anti-counterfeiting fiber in the form of two connected triangles in the anti-counterfeit material:

FIG. 7a is a cross section, FIG. 7b and 7c are drawings in horizontal projection;

FIG. 8 is a cross-sectional drawing of a counterfeit fiber in the form of a single quadrangle in a counterfeit material:

FIG. 8a is a cross section, FIG. 8b is a drawing in horizontal projection;

FIG. 9 is a cross-sectional drawing of a counterfeit fiber in the form of three connected quadrangles in a counterfeit material:

FIG. 9a is a cross section, FIG. 9b and 9c are drawings in horizontal projection;

FIG. 10 - drawings of a trapezoidal cross-section of anti-counterfeiting fiber in a material protected from counterfeiting:

FIG. 10a and 10b are cross sections, FIG. 10c and 106 are drawings in horizontal projection;

FIG. 11 - drawings of anti-counterfeiting fiber coated with a transparent material in a material protected from counterfeiting:

FIG. 11a and 11b are cross-sectional drawings of counterfeit fibers in the form of a single triangle and a single quadrangle coated with a transparent material of circular cross section, FIG. 11c and 116 are cross-sectional drawings of counterfeit fibers in the form of a single triangle and a single quadrangle covered with a transparent flat cross material

- 3 011271 cross-section, Fig. 11e and 11G are cross-sectional drawings of fibers protecting against counterfeiting in the form of several triangles and several quadrangles coated with a transparent material of a flat cross section;

FIG. 12 is a cross-sectional drawing with a vacuum-shielding aluminum layer between color patterns A and B of the anti-counterfeit fiber:

FIG. 12a is a cross section in the form of a triangle with an aluminum layer deposited in the middle of the material, FIG. 12b is a cross section in the form of a triangle with an aluminum layer deposited on the surface of the material, FIG. 12c is a cross-section in the form of a quadrangle with an aluminum layer deposited in the material, FIG. 126 is a cross-section in the form of a quadrangle with an aluminum layer deposited on the surface of the material, FIG. 12e is a cross section in the form of several connected triangles with an applied aluminum layer on the same visible surface of the material;

FIG. 13 is a drawing of a cross section of the proposed anti-counterfeiting fiber with a curved side of the cross section;

FIG. 14a-14c are drawings of minimum areas of fibers of various shapes protecting against counterfeiting;

FIG. 15a, 15b are drawings of bent anti-counterfeit fibers in the proposed anti-counterfeit material.

FIG. 16 is a front view, in partial section, of a flat-shaped anti-counterfeiting fiber.

Option exercise

In FIG. 1 is an enlarged view of a counterfeit fiber 2 distributed in the counterfeit material 1. A partial surface 3 of the counterfeit fiber 2 is displayed on the counterfeit material surface 1 '. Partial surface 3 has a concave-convex protective structure. In this figure, a concave-convex protective structure is formed by a triangular element contained in a cross section 4 of the anti-counterfeiting fiber 2. The upper corner and the surface of the beveled side of the triangular element form a concave-convex protective structure. Surfaces 3 'and 3 of these two beveled sides form a partial surface 3. Color pattern A is distributed on the surface 3', and color pattern B is distributed on the surface 3. If you look at the partial surface 3 from different angles of view to the surface 1 'of the anti-fake material 1, respectively, and separately see the color patterns A and B. For example, if you look from the side shown by the arrow “a”, you can see the color pattern A, and if from the side shown by the arrow “b”, you can see the color pattern B. From due to differences between colors With figures A and B, a noticeable visual difference is achieved. In order to make the visual difference more noticeable, the color patterns A and B can respectively or completely be completely distributed on the surface 3 'and 3. If you look at the partial surface 3 from different angles of view to the surface 1' of the material 1 protected from falsification, if you look at a partial surface 3 from the side shown by the arrow “a”, with the transition to the side shown by the arrow “b”, in the direction vertical to the anti-counterfeiting fiber, there is at least one angle of view “c” between the two color patterns A and B, under which you can see either color pattern A or color pattern B. Since the anti-counterfeit fiber 2 is usually very thin, at an angle “c” you can usually see a pattern formed together of color patterns A and B.

At least two color patterns on the counterfeit fiber distributed in the proposed counterfeit material include color patterns that may appear in visible light, in ultraviolet, infrared, and other rays of the invisible spectral regions. In the case of color patterns appearing in visible light, the proposed anti-counterfeit material can provide a check for counterfeiting of the first level, i.e. check with the naked eye. In the case of color patterns appearing in ultraviolet, infrared, and other rays of the invisible regions of the spectrum, they can be judged using special instruments necessary to perform a check for falsification of the second level. Since in the proposed anti-counterfeiting material 1, a very thin anti-counterfeit fiber 2 is distributed (typically a fiber diameter of less than 100 μm) on which a concave-convex protective structure is located, and a concave-convex protective structure is located on said partial surface 3 of the anti-counterfeit fiber , and this partial surface 3 can be displayed on at least one surface of the anti-counterfeit material, due to the function of blocking the concave-convex structure, the observer can enno separately and visible on the surface of the security of the material from different angles different color patterns on the part surface, thereby achieving a marked visual difference, by which is possible to achieve protection against forgery effect. Since such a visual difference is achieved through the use of a concave-convex structure designed to obscure the patterns distributed on a partial

- 4 011271 surfaces of the anti-counterfeiting fiber in the anti-counterfeiting material, i.e. The achievement of the above goals depends on obscuring the light effect from different angles of view with an accurate concave-convex structure on the fiber surface, accurately faking such a stereo structure using all current printing technologies (including offset printing, perforation, engraving, inkjet printing, copying, etc. .) impossible. Thus, the present invention can effectively prevent any fake using printing technologies.

The visual difference of the present invention is diversity.

At least two color patterns of the anti-counterfeit fibers distributed in the proposed anti-counterfeit material are obscured by concave-convex structures and may be accordingly visible, resulting in a visual difference, which is diversity. This visual difference is associated with different visual perceptions caused by color patterns distributed on a partial surface of fibers protecting against counterfeiting with concave-convex screening structures located on them.

In the embodiment of the invention shown in FIG. 1 shows the distribution of color patterns, which can be completely obscured by a concave-convex structure. Since the screening structure extends in the length direction of the anti-counterfeiting fiber 2, different visual perceptions vertical to the length direction of the anti-counterfeiting fiber can change dramatically only when screening. Since the anti-counterfeiting fiber 2 is very thin, it is recommended that the maximum cross-sectional diameter of the anti-counterfeiting fiber is not more than 0.25 mm. In this case, the visible width of the anti-counterfeiting fiber, when viewed vertically to the length direction of the anti-counterfeiting fiber 2, is very limited, and when changing from the angle of view “a” to the angle of view “b”, a noticeable visual difference can only be achieved if if there is a difference between the color patterns A and B. This is the only way that this difference can be noticed by a simple person. The advantage of this embodiment is that it allows the naked eye to notice a large change only in the difference between the color patterns A and B. Preferably, this difference lies only in different colors, however, it can be for the same color, but with different patterns, and, in addition, in the difference in color and pattern. In this embodiment, there are at least two angles of view “a” and “b” on the surface 1 ′ of the material 1. The color pattern A can be seen by looking at the indicated partial surface of the anti-counterfeiting fiber at the angle of view “a” but it is impossible to see the color pattern B, since it is obscured by a concave-convex triangular structure on the partial surface 3 of the anti-counterfeiting fiber 2. Color pattern B can be seen if you look at the partial surface 3 of the anti-counterfeiting fiber windows at an angle of view “b”, but it is impossible to see the color pattern A, since it is obscured by a concave-convex triangular structure on the partial surface 3 of the anti-counterfeit fiber 2. To check the second level for counterfeiting using fluorescent fiber, infrared fiber, etc. d., i.e. for viewing using instruments, this embodiment may not necessarily be limited to the difference in color patterns A and B. For example, color patterns A and B may be exactly the same within normal vision, but one of them must be processed with a specific invisible beam. In this case, the visual difference between them can be seen using special devices that can distinguish this invisible beam, and achieve the effect of protection against fake. In this embodiment, a concave-convex screening structure is located on a partial surface 3 of the anti-counterfeiting fiber 2 so as to completely separate the color patterns A and B without any overlap, and thereby achieve a screening effect on visual perception.

In addition, a noticeable visual difference between at least two patterns A and B on the partial surface 3 can produce a different visual effect created by a pattern A of one color that cannot completely obscure, and a pattern B of another color that can completely obscure. This visual effect is often the result of introducing one color into another. For example, color pattern A is fully or partially introduced into color pattern B, i.e. if you look at the partial surface 3 of the anti-counterfeiting fiber at an angle of view "a", the viewer can only see color pattern A, since the concave-convex screening structure on the partial surface 3 of the anti-counterfeit fiber completely obscures the color pattern B. If you look at the partial surface 3 of the anti-counterfeiting fiber at an angle of view “b”, the viewer can see the color pattern B due to the concave-convex screening structure on the partial surface 3 of the anti-counterfeiting fiber, but the color oic pattern A is completely or partially obstructed. Color patterns A and B must be different to create this visual difference. To create a strong visual difference, at least the colors of these color patterns are different.

In addition, a visual difference could be obtained if they were not completely obscured. In this case, color patterns A and B could be two patterns, some parts of which partially overlap, i.e., if you look at the partial surface 3 of the anti-counterfeiting fibers

- 5 011271 at an angle of view “a”, the viewer can see that color pattern A obscures only part of color pattern B due to the concave-convex screening structure on the partial surface 3 of the anti-counterfeiting fiber. If you look at the partial surface 3 of the anti-counterfeiting fiber at an angle of view “b”, the viewer can see that the color pattern B obscures only part of the color pattern A due to the concave-convex obstructing structure on the partial surface 3 of the anti-counterfeit fiber. Those. although A and B are not completely obscured, their relative parts are obscured. Due to the limited resolution of human vision, the pattern in the eyes of a person might look like a composite pattern that introduces part of color pattern B into color pattern A, rather than a pattern that simply completely introduces color pattern B into color pattern A or simply completely introduces color pattern A into color Figure B. In order to get a noticeable visual difference, the color patterns should be different, at least they should have a distinctive color feature.

In addition, a visual difference could be obtained by an abrupt visual change in the length direction of the anti-counterfeiting fiber caused by the screening. Because a person sees a longer section in the direction of the length of the anti-counterfeit fiber (the best length of the anti-counterfeit fiber is not more than 15 mm, which can have much better visibility compared to its width of 0.2 mm), if at least two color patterns A and B are distributed in different positions in the direction of the length of the anti-counterfeiting fiber (in contrast to the axial distribution, as shown in Fig. 1), an abrupt visual transition can be obtained, which will be explained in detail below by the examples of subsequent riants exercise. This visual change has relatively lower requirements for color patterns, i.e. color patterns can be the same, and at the same time a spasmodic visual change can still be obtained provided that there is a noticeable visual difference in position in the direction of the length of the anti-counterfeit fiber.

The proposed variety of color patterns and the visual effects it produces.

At least two color patterns A and B may be patterns consisting of different monochromatic or multicolor lines. Since the proposed anti-counterfeiting fiber is very thin, for a more practical check of the first level for counterfeiting, the simpler and more direct, the more valuable it will be. Given the fact that it is easiest for a person to identify a color attribute, two color patterns A and B of different colors will be explained in detail below.

As shown in FIG. 1, color pattern A and color pattern B are a parallel color line A and a parallel color line B with different color characteristics, for example, color line A is red and color line B is blue. If you look at the partial surface 3 of the anti-counterfeiting fiber at an angle of view "a", you can only see the red line, and it is impossible to see the blue line, since it is obscured by a concave-convex obstructing structure on the partial surface 3 of the anti-counterfeiting fiber. In this case, an ordinary person perceives the fiber as red. If you look at the partial surface 3 of the anti-counterfeiting fiber at an angle of view "L", you can only see the blue line, and it is impossible to see the red line, since it is obscured by a concave-convex obstructing structure on the partial surface 3 of the anti-counterfeiting fiber. In this case, an ordinary person perceives the fiber as blue. If you look at the partial surface 3 of the anti-counterfeiting fiber at an angle of view “c”, you can see both lines: red and blue, since these two colored lines are very close to each other. In this case, an ordinary person can perceive only the combined effect of the red line and the blue line, i.e. can perceive fiber as something black.

In the embodiment of FIG. 1, the color line A and the color line B with different color signs, but parallel, are also parallel to the length direction of the counterfeit fiber. When you change the angle of view, the entire fiber will change its color from red to blue with a unique visual change effect. The angle of transition from angle “a” to angle “b” should preferably not exceed 120 °. With this solution of visual signs, the most noticeable color change of the fiber occurs when you look at the surface of the fiber with a change in the viewing angle in a position vertical to the direction of the fiber length.

In FIG. Figures 2a and 2b show the combined effect of colors A1, A2, A3 and the combined effect of colors B1, B2, B3, respectively, to obtain a pattern A and a pattern B parallel and with different color characteristics. Colors A1-A3 and colors B1-B3, respectively, are in the form of stripes and are vertical to the length direction of the anti-counterfeiting fiber. With this solution of visual signs, the most noticeable color change of the fiber occurs when you look at the surface of the fiber with a change in the viewing angle in a position along the direction of the fiber length.

In FIG. 3 shows the combined colors A1, A2, A3 and the combined colors B1, B2, B3, respectively, to obtain a pattern A and a pattern B with different color characteristics and parallel. Colors A1-A3 and colors B1-B3, respectively, are in the form of stripes and extend at an angle of 0-90 ° to the length direction of the anti-counterfeiting fiber. With this solution of visual signs, the most noticeable color change of the fiber occurs if you first look from a position at an angle to the direction of the length of the fiber, and then change the angle of view to look at the surface of the fiber.

- 6 011271

Color pattern A and color pattern B are the same in pattern and color, but color pattern A and color pattern B occupy different positions in the direction of length of the anti-counterfeiting fiber, as shown in FIG. 4. For example, color pattern A and color pattern B are both black, color pattern A is located at the front of the fiber and consists of colors A1, A2, A3, and color pattern B is located at the back of the fiber and consists of colors B1, B2, B3 . When the angle of view is changed, the position of the entire fiber jumps with a unique effect of visual change.

In FIG. 5a and FIG. 5e shows cases of color pattern A and color pattern B with a radial distribution extending in the axial direction, but occupying different positions in the direction of the fiber length. Color pattern A and color pattern B can occupy positions that are completely overlapping, or partially overlapping, or partially connected, or separated from each other. In FIG. 5, the color pattern A in the form of a strip is red, and the color pattern B in the form of a strip is black. If the positions of color drawing A and color drawing B in the axial direction are completely overlapped, when the angle of view is changed, the entire fiber changes color from red to black, the position of the fiber does not visually move, which produces a unique effect of visual change. As shown in FIG. 5b, if the positions of the color pattern A and the color pattern B in the axial direction partially overlap, when the angle of view changes, the entire fiber visually changes color from red to black, and the position moves abruptly, but this jump is small, which produces a unique visual change effect. As shown in FIG. 5c, if the axial positions of color pattern A and color pattern B are connected, when the angle of view changes, the entire fiber visually changes color from red to black and the position moves abruptly, but this jump occurs in the form of a head connected with a tail. As shown in FIG. 56, if the axial positions of color drawing A and color drawing B are separated, when the angle of view is changed, the entire fiber visually changes color from red to black, and the position moves abruptly, but this jump occurs abruptly, which produces a unique visual change effect.

In FIG. 5c shows the case of color pattern A and color pattern B consisting of different colors. A drawing can be a single color or a combination of several colors. For example, color pattern A in the form of a strip consists of two lines of different colors with a head connected to the tail, one of which (A1) is red and the second (A2) is green. Color drawing B is a black line. When changing the angle of view, visually the entire fiber changes color from two-tone (red / green) to one color (black), which produces a unique effect of visual change.

The color of the color pattern may be white or empty, or the same color as the surface of the material protected from falsification. In FIG. 5ί, if the color pattern A in the form of a strip is red and the color pattern B in the form of a strip is white and distributed on the entire convex surface 3 of the anti-counterfeit fiber, and if the surface of the anti-counterfeit material is white, when changing the angle of view, the entire fiber changes from red to an invisible state, which produces a unique visual change effect. If the color pattern A in the form of a strip is black and the color pattern B in the form of a strip is yellow and distributed on the entire convex surface 3 of the anti-counterfeit fiber, and if the surface of the anti-counterfeit material is yellow, when the angle of view changes, the entire fiber changes from black on an invisible state, which produces a unique effect of visual change. Thus, if the color of the color pattern B is the same as the color of the surface of the anti-counterfeit material, the fiber cross section can be developed with a visual partial or full inclusion of color pattern B in color pattern A, but color pattern A cannot be entered in color pattern B ( see Fig. 5e).

In the present invention, the concave-convex hiding structure is diverse.

The concave-convex screening structure consists of a cross section of a counterfeit fiber having at least one triangular element, the triangular element being a cross section structure with at least one upper corner and two corresponding sides. Its typical structure is a triangular section, but it can be a quadrangular section or a polygonal section. The cross section in FIG. 1 is a triangular, color pattern A is located on the surface 3 'of one beveled side of the triangle, and color pattern B is located on the surface 3 of the other beveled side of the triangle. A triangle is a typical concave-convex screening structure that provides visibility of one color pattern and obscures another color pattern, and also easily fulfills the requirement that the change in the angle of view preferably does not exceed 120 ° when it changes from angle “a” to angle “b”.

The concave-convex screening structure consists of several triangles in parallel. The composition of all color patterns on the corresponding oblique side of each triangle forms the color pattern A, and the composition of all color patterns on the other corresponding oblique side of each triangle forms the color pattern B. Since the fiber is very thin, the concave-convex covering structure made of one triangle is difficult to display on surfaces protected from fake only in the form of its upwardly directed upper corner. Therefore tre

- 7 011271 the square should be made in a flat form, but for such a flat triangle, when changing the angle of view, the sensitivity of changing the color pattern is lower, and color pattern A or color pattern B is very thin and small if the fiber has a certain width, which is reflected in the visual effect. The proposed solution of several triangles in parallel can overcome this drawback.

FIG. 6a, 6b are cross-sectional drawings of counterfeit fiber 2 in the form of a single triangle in counterfeit material 1. FIG. 6a is a cross-sectional view; FIG. 6b is a drawing in horizontal projection. On the corresponding lateral beveled sides of the triangle, there is a color pattern A and a color pattern B. Since the anti-counterfeit material has a certain transparency, color pattern A and color pattern B located on the surface of the anti-counterfeit material are visible to the eye. If you look at the angle “a”, you can see the color pattern A, but the color pattern B is impossible to see, because it is obscured by the convex structure of the triangle. Similarly, if you look at the angle “b”, you can see the color pattern B, but the color pattern A cannot be seen, since it is obscured by the convex structure of the triangle. In addition, the anti-counterfeit fiber 2 in the anti-counterfeit material 1 is bent with an equally spaced axis between the two sides, thereby ensuring that either both surfaces A and B are simultaneously displayed on the surface of the anti-counterfeit material or on the surface of the anti-counterfeit material only the surface of the third side 6 is displayed. In this case, the bend with the equidistant axis 5 is a key factor for the exact direction of the surface of the fiber with A and B on it, simultaneously directed to top. In fact, the equidistant axis 5 is a virtual control axis, which in all subsequent drawings plays the same role as in FIG. 6a, 6b. Its purpose is to simultaneously display color pattern A and color pattern B on the surface of the anti-counterfeit 1. The surface color of the third side 6 of the cross section is white or the same as the color of the surface of the counterfeit 1. The main reasons for choosing this triangular structure are due to three aspects .

1. Generally speaking, if the width of the color line is less than 30 microns, it is difficult to see it with the naked eye, and the triangular structure at the same fiber height has a larger color area visible to the naked eye. If the thickness of the paper or plastic film is less, it is not possible that the fiber height is greater than the thickness of the paper or plastic film. Typically, paper money does not exceed 90 microns, and carbon paper does not exceed 80 microns, i.e. If necessary, adding fiber to paper of such a thickness, a triangular fiber is the best choice.

2. Compared with a quadrangular cross-section, the triangular cross-section has higher stability and can provide simultaneous display of color patterns A and B on the surface of the material protected from counterfeiting under a certain line press during paper manufacturing.

3. One of the features of the triangular structure is that the color pattern on the surface of side 6 can potentially be displayed on the surface of the material protected from counterfeiting. Due to the concave-convex structure on this flat surface, it is impossible to provide a visual difference caused by a change in the angle of view. In order to avoid this situation, we are preparing a color drawing on this surface of white color or the same color as the color of the surface of the material protected from falsification. Thus, if this color pattern is located on the surface of the anti-counterfeit material, this problem can be solved by displaying the surface of the white fiber or the same color as the color of the surface of the anti-counterfeit material that is not visible to the eye.

FIG. 7a-7c are drawings of a counterfeit fiber with a cross section in the form of two connected triangles in a counterfeit material: FIG. 7a is a cross-sectional view, and FIG. 7b and 7c are their drawings in horizontal projection. Since the anti-counterfeit material has a certain transparency, color pattern A and color pattern B displayed on the surface of the anti-counterfeit material are visible to the eye. If you look at the angle “a”, you can see the color pattern A (as a joint visual effect A1 + A2), but the color pattern B is impossible to see, because it is obscured by a triangle. And uye uegza (on the contrary - lat.), If you look from the angle of view “b”, you can see the color pattern B (as a joint visual effect B1 + B2), but the color pattern A cannot be seen, since it is obscured by a triangle. In addition, the fiber in the anti-counterfeit material can be bent with an equal-dividing axis 5 (see Fig. 7b) or can also be in a straight line (see Fig. 7c), so that it is possible to ensure that either the surface is on it with a color pattern A and a surface with a color pattern B located on it at the same time are displayed on the surface of the anti-counterfeit material 1, or on the surface of the anti-counterfeit material 1 only the surface of the third side is displayed 6. We prepare a color drawing on the surface of the side 6 white or the same color as the surface color of the anti-counterfeit material 1. Actual effects

- 8 011271 The effects of this structure are as follows.

1. Compared with a single triangle at the same fiber height, their visible area is larger, which allows this structure to be used in very thin paper, for example, paper with a thickness of less than 50 microns.

2. Due to the completely flat shape of the fiber, if the fiber is shorter in length with a certain hardness, the fiber, even if it does not need to be bent, can ensure that either the surfaces with the color patterns A and B located on them are simultaneously displayed on the surface of the anti-counterfeit material 1 or on the surface of the material 1 protected against counterfeiting, only the surface of the third side 6 is displayed.

FIG. 8a, 8b are drawings of a anti-counterfeit fiber 2 with a cross-section in the form of a single quadrangle in a material 1 protected from counterfeit:

FIG. 8a is a cross section;

FIG. 8b is a drawing in horizontal projection.

Compared to the single triangle shown in FIG. 6a-6b, the anti-counterfeiting fiber 2 is bent with an equally spaced axis 5, its visible area in the anti-counterfeiting material 1 is reduced by half if the fiber height is the same, however, its advantage is that any surface (or surface with the color patterns A and B located on it, or the surface with the color patterns A 'and B' on it), and when the angle of view is changed, the entire fiber can produce the effect of a color change. This solution is one of the choices for thicker paper or film.

FIG. 9a, 9b are drawings of anti-counterfeit fiber 2 with a cross section in the form of three connected quadrangles in a material 1 protected from counterfeit:

FIG. 9a is a cross section;

FIG. 9b and 9c are their drawings in horizontal projection.

Compared to the single quadrangle shown in FIG. 8a, 8b, at the same fiber height, their visible area is larger. Due to the completely flat shape of the fiber, if the fiber is shorter in length with a certain hardness, the fiber, even if it does not need to be bent, can ensure that color pattern A (consisting of A1, A2 and A3) and color pattern B (consisting of B1, B2 and B3) are simultaneously displayed on the surface of the anti-counterfeit material.

FIG. 10a-10b are drawings of anti-counterfeiting fibers with a trapezoidal cross-section in a material protected from counterfeiting:

FIG. 10a and 10b are cross sections;

FIG. 10c and 10ά - their drawings in horizontal projection.

The trapezoid has better stability, and even if surfaces with color patterns A and B located on them have a large slope (the greater the slope, the higher the sensitivity), it is still very stable. Especially if the fiber is shorter in length with a certain hardness, the fiber, even if it does not need to be bent, can ensure that surfaces with the color pattern A and color pattern B on them are simultaneously displayed on the surface of the anti-counterfeit material (see Fig. 10c ) In FIG. 10a shows a trapezoid compared to the double trapezoid shown in FIG. 10b, its advantage is that the height of the fiber in the paper is much smaller. In FIG. 10a, the color of the surface of side 6 is white and the same as the color of the surface of the counterfeit material 1, but in comparison with FIG. 10a, the solution shown in FIG. 10b, when changing the angle of view, it can produce the effect of a color change regardless of which surface is facing up. This option can be used for thicker paper or film.

The surface of the bottom side 6 of the trapezoid shown in FIG. 10a has a white color and is the same as the color of the surface of the counterfeit material 1.

FIG. 11a-11G are drawings of counterfeit fiber coated with a transparent material in counterfeit material 1. Due to the transparency of the transparent material 7, a partial surface 3 with a concave-convex screening structure on the proposed counterfeit fiber is naturally displayed on the surface of the counterfeit material 1. In FIG. 11a and 11b show that fibers with cross sections in the form of a single triangle and a single quadrangle, respectively, are coated with a transparent material 7 of circular cross section. In the case of these fibers, the aim is to increase the compressive strength of the fiber in order to further ensure the stability of the cross-sectional shapes of the fiber in the paper manufacturing process or in the plastic adding process. In FIG. 11c and 11ά show that fibers with cross sections in the form of a single triangle and a single quadrangle are respectively coated with a transparent material of flat cross section 7. In the case of these fibers, the purpose is not only to increase the compressive strength of the fiber, in order to further ensure the stability of the fiber cross-sectional shapes in the process paper making or the process of adding plastic, but also to ensure that surfaces with the color patterns A and B located on them are simultaneously displayed on surface of the security material. In FIG. 11e and 11d show that in

- 9 011271 fibers with cross-sections in the form of several triangles and several quadrangles, respectively, are covered with a transparent material of flat cross-section 7. In the case of these fibers, the aim is to increase the compressive strength of the fiber in order to further ensure the stability of the fiber cross-sectional shapes during the paper manufacturing process or the addition process plastic.

FIG. 12a-12e are cross-sectional drawings with an aluminum layer deposited in vacuum, the function of which is to shield between color pattern A and color pattern B on counterfeit fiber 2. We have established in our experience that since the fiber has a very small size, when using organic material to prepare fibers, the colors of color patterns A and B interfere, seriously affecting the beauty of color patterns A and B and reducing the visual difference between color patterns A and B. D In order to solve this problem, we envisage an aluminum-coated layer 8 between color patterns A and B, since the aluminum coating is not only cheap, but also performs the function of complete screening, having a thickness of the aluminum-coated layer of only 0.2 μm.

FIG. 12a is a drawing of a fiber with a cross-section in the form of a triangle with an aluminum-coated layer 8, located in the middle position in a material that is the same in composition made of two fibers of different colors. The mating surface of this composition is coated with aluminum.

FIG. 12b is a drawing of a fiber with a cross-section in the form of a triangle with an aluminum-coated layer 8 located on the surface of the material. After applying aluminum to the surface of the fiber, you can also glue a layer of paint or leave it only with this aluminum layer.

FIG. 12c is a drawing of a fiber with a cross-section in the form of a quadrangle with an aluminum-coated layer 8, located in the middle position in the material. The mating surface of two different colors is coated with aluminum.

FIG. 126 is a drawing of a fiber with a cross-section in the form of a quadrangle with an aluminum-coated layer 8 located on the surface of the material. The aluminum-coated layer 8 is located on one side of the axis 5. After applying aluminum to the surface of the fiber, you can also glue a paint layer or leave it only with this aluminum layer.

FIG. 12e is a drawing of a fiber with a cross-section in the form of several connected triangles and an aluminum layer 8, located on the surfaces B1, B2 B3 of the triangles with the same visual perception on the anti-counterfeiting fiber. In addition, the surface of the entire anti-counterfeiting fiber can be coated first with aluminum, and then color patterns A and B can be printed on the respective surfaces.

The specified concave-convex covering structure may have an arcuate shape (Fig. 13). In addition, it may be in the form of saw teeth or other irregular curved shapes.

In the embodiments described above, the anti-counterfeit materials are organic films. Nobody used to add anti-counterfeiting fibers to plastic films to achieve anti-counterfeiting. The reason for this is that plastic films are difficult to tear and easy to fuse with counterfeit fibers. Those. it is difficult to tear a plastic film or pull out a counterfeit fiber to check it. If a fraudster fakes visual features by printing a thin line, there is no easy way to check for fakes. Since the present invention does not require tearing plastic films for viewing, it may find application in the field of plastic films.

In the embodiments described above, the counterfeit fiber is a fluorescent fiber. When illuminated by a fluorescent lamp and a change in the angle of view, there will be a noticeable visible visual difference.

In the above embodiments, the anti-counterfeiting fiber is infrared. When illuminated with an infrared beam and changing the angle of view, there will be a noticeable visible visual difference.

The method of monitoring the partial surface 3 of the anti-counterfeit fiber displayed on the surface of the anti-counterfeit material is as follows.

To achieve the objectives of the present invention, the most important method is to control the effective concave-convex screening structure of the fiber displayed on the surface of the counterfeit, in a real production process. The results of theoretical analysis and a large volume of experiments indicate that in the process of making paper, if the fiber has a certain elastic hardness, the maximum projection area will be displayed on the surface of the paper. In the present invention, the projection area of the anti-counterfeiting fiber refers to the minimum area corresponding to the projection direct substance, i.e. if the anti-counterfeiting fiber is a straight line and the cross section of the fiber is the same in the length direction, the minimum area is

- 10 011271 projection direct substance (see the area shaded by oblique lines in figure 14A). If the anti-counterfeiting fiber is a straight line and the cross-section of the fiber is not unequal in the length direction, the minimum area is the product obtained as the product of the maximum width of the projection area of the anti-counterfeiting substance and the length of the anti-counterfeiting fiber (see oblique shaded area lines in Fig. 14b). If the anti-counterfeiting fiber is a curve, the minimum area is only the area formed and covered by the projection lines of the bent fiber anti-counterfeiting material (see the area shaded by oblique lines in Fig. 14c).

Another description has the same effects as the description above, if the anti-counterfeit fiber 2 is enclosed in a cube that can completely wrap the partial surface 3 of the anti-counterfeit fiber, which corresponds to the two maximum surfaces in the minimum cube of the anti-counterfeit fiber. The two maximum surfaces of the minimum cube, due to their lowest energy state, undoubtedly face the surface of the material protected from counterfeiting.

Due to this, a partial surface 3 with a concave-convex screening structure can be displayed on the surface of the material protected from counterfeiting.

Accordingly, the solutions below are proposed. These solutions are also applicable for the distribution of anti-counterfeiting fibers in a paper sandwich, for distribution in a plastic film sandwich, or for distribution in a single-layer plastic film.

The counterfeit fiber 2 has a curved shape. The upper surface of the bent fiber is a partial surface 3 of the anti-counterfeiting fiber (see FIGS. 15a and 15b). The maximum cross-sectional width “c” of the anti-counterfeiting fiber in the direction of its length and parallel to the surface of the anti-counterfeit material is equal to or less than the maximum cross-sectional width “b” vertical to the surface of the anti-counterfeit material. In other words, the major axis “b” of the cross section in the length direction of the counterfeit fiber 2 is vertical to the surface of the counterfeit material (see FIG. 15b). Thus, if the fiber is in a bent state, its cross-section, even if not in a flat form, can still expose the necessary partial surface 3 of the anti-counterfeiting fiber onto the paper surface. The maximum horizontally overcome length formed by the bent fiber 2 anti-counterfeiting fiber is the geometric width "e" (see Fig. 15a). If this geometric width is at least two times larger than the major axis “b” of the cross section in the length direction of the counterfeit fiber, the bent counterfeit fiber 2 can be completely displayed on the surface of the counterfeit material in its naturally bent state.

If the cross section of the counterfeit fiber 2 has at least some portion 9 of a flat shape in the fiber length direction, a flat surface corresponding to the flat shape will be displayed on the surface of the anti-counterfeit material (see FIG. 16). The cross-section of the anti-counterfeiting fiber 2 in the direction of its length can also be completely flat in shape, and the flat surface corresponding to the flat shape will be displayed on the surface of the anti-counterfeit material. The color of the flat part of the counterfeit fiber 2 is preferably empty or white or the same as the surface color of the counterfeit material 1.

The materials of the proposed anti-counterfeit fiber may be organic or metallic.

The proposed anti-counterfeiting material may be paper or paperboard or organic film. The counterfeit fiber 2 can be placed between two layers of cellulose, or between two organic films, or between a layer of cellulose and a layer of another material, or between a layer of organic film and a layer of another material, or it can adhere to the surface of the anti-counterfeit material, or can be inserted into the surface of a material protected from counterfeiting in other ways.

The various structures of the anti-counterfeit fibers offered can be molded using dies. Color patterns on concave-convex structures can be applied to fibers that protect against counterfeiting by film bonding, engraving, heating printing, etc. Color patterns of pure colors can be applied first by inkjet printing and then by synthesis. In addition, it can be a composite obtained by printing heated fibers using different colors.

The counterfeit fiber can be introduced into the paper by directly adding it to the pulp during the papermaking process, as well as by pressing it into several layers of paper.

Claims (12)

CLAIM 1. A tamper-proof material in which anti-tamper-resistant fibers 2 are distributed, and on a surface 1 ′ of said tamper-proof material 1 a portion of surface 3 of said tamper-proof fiber 2 is manifested, characterized in that on said portion of surface 3 there is a concave a convex screening structure on which at least two color patterns A and B are distributed, on said partial surface 3 there is a noticeable visual difference between said at least two color patterns A and B, ak on the surface 1 'of the security material 1 with the display 3 of said partial surface, wherein said partial surface 3 is provided with the ability to view from different angles of view, can be appropriately visible color patterns A and B. 2. The material according to claim 1, characterized in that it has such a shape that there are at least two angles of view "a" and "b" on the surface 1 'of the tamper-proof material 1 with the display of the specified partial surface 3, while the color pattern A can be seen if the specified partial surface 3 of the anti-counterfeit fiber 2 is made to be able to be viewed from an “a” angle, but you cannot see the color pattern B, since it is obscured by a concave curved structure on the partial surface 3 of the protective from the fake fiber 2, and the color pattern B can be seen if the specified partial surface 3 of the anti-fake fiber 2 is able to be viewed from the “b” angle, but you cannot see the color pattern A, since it is obscured by a concave-convex structure on a partial surface 3 of a counterfeit fiber 2. 3. The material according to claim 1 or 2, characterized in that the concave-convex screening structure of said anti-counterfeit fiber 2 has a triangle in cross section, and color drawings are located on the side surfaces of the concave-convex screening structure, color pattern A on the surface 3 'one beveled side in the upper corner of the specified triangular element and color pattern B on the surface 3 of the other beveled side in the specified upper corner. 4. The material according to claim 3, characterized in that the cross-section of the specified anti-counterfeit fiber 2 has the form of a quadrilateral or several connected quadrangles, and the counterfeit fiber 2 is bent with equal fissile axis 5. 5. Material according to one of claims 1 to 4, characterized in that said partial surface 3 of said anti-counterfeit fiber 2 has its projection on the surface of counterfeit-resistant material 1 with the maximum projection size of the anti-counterfeit fiber 2 or is parallel to its maximum projection. 6. Material according to claims 1, 2 or 3, characterized in that the said anti-counterfeit fiber 2 is made bent or bent and is able to manifest itself with a bent or bent shape on the surface of the material protected from a fake. 7. Material according to one of claims 1 to 6, characterized in that the outer side of the specified anti-counterfeit fiber 2 is covered with transparent material 7, the transparent material 7 has a flat shape, and the specified partial surface 3 of the specified anti-counterfeit fiber 2 is on the surface anti-forgery fiber 2 corresponding to the transparent material 7. 8. The anti-counterfeit fiber introduced into the anti-counterfeit material according to one of claims 1 to 7, which has a partial surface 3 displayed on one surface 1 ′ of the specified anti-counterfeit material 1, characterized in that said partial surface 3 has a concave-convex screening structure, on which at least two color patterns A and B are distributed, the at least two color patterns A and B have a noticeable visual difference on the indicated partial surface 3, due to which the color patterns and A and B can be seen respectively from the surface 1 'of the security material 1 with the display of said partial surface 3, in the performance with the ability to view at different angles to said partial surface 3. 9. Fiber of claim 8, characterized in that it has such a shape that there are at least two angles of view "a" and "b" on the surface 1 'of the tamper-proof material 1 with the display of the specified partial surface 3, color pattern And you can see if the specified partial surface 3 of the anti-counterfeit fiber 2 is made to be viewed from the “a” angle, but you cannot see the color pattern B, since it is obscured by a concave-convex barrier structure on the partial surface 3 of the protective fiber 2, and color pattern B can be seen if the indicated partial surface 3 of the counterfeit fiber 2 is made to be viewed from the “b” angle, but it is impossible to see the color pattern A, since it is obscured by a concave-convex structure on a partial anti-counterfeit fiber surface 3 2. 10. Fiber of claim 8 or 9, characterized in that said partial surface 3 has its projection on said counterfeit-resistant material 1 with a maximum projection size in - 12 011271 counterfeit fiber 2 or is parallel to the maximum projection. 11. Fiber of claim 8 or 9, characterized in that the said anti-counterfeit fiber 2 is a bent or curved fiber that can be displayed on the surface of the counterfeit material 1 in a self-bent or self-bent state. 12. Fiber of claim 8 or 9, characterized in that the cross-section of the specified anti-counterfeit fiber 2 has a flat shape in the direction along the entire length or part of the length, and the specified partial surface 3 of the specified anti-counterfeit fiber 2 is on a flat surface or on the surface of a tamper-resistant fiber having the same projection on the tamper-proof material.