JP2008520754A - Anti-counterfeiting material distributed with anti-counterfeiting fiber with visual characteristics that cannot be imitated by printing - Google Patents

Abstract

[Solution]
An anti-counterfeit material is disclosed. Anti-counterfeit fiber (2) is dispensed on the anti-counterfeit material. The partial surface (3) of the anti-counterfeit fiber (2) is placed on the surface of the anti-counterfeit material (1). There, the partial surface (3) has an uneven shielding structure and at least two color patterns (A, B) are distributed on the surface. The at least two color patterns (A, B) have a clear visual difference on the partial surface (3), and thus, when viewed from different angles, from the surface (1 ′) of the anti-counterfeit material The color pattern (A, B) can be seen. Since the visual difference according to the present invention is formed by shielding the pattern distributed on the partial surface (3) of the anti-counterfeit fiber (2) in the anti-counterfeit material having the uneven shielding structure, the three-dimensional structure Accurate printing to imitate is impossible. Therefore, the present invention can effectively prevent imitation of printing.
[Selection] Figure 1

Description

  The present invention relates to an anti-counterfeit paper, an anti-counterfeit film or an anti-counterfeit wrapping paper, and more particularly to an anti-counterfeit material in which anti-counterfeit fibers having visual characteristics that cannot be imitated by printing are distributed.

Anti-counterfeit paper made by adding colored fibers in the paper has a long history of almost 100 years, to date, to produce banknotes, valuable securities, receipts, merchandise Have been used in many countries to produce standard, printed labels, and the like, and fluorescent fibers have been particularly used to produce almost all banknotes.
In summary, there are generally two types of anti-counterfeit fibers, one is a single fiber of one color and the other is a single fiber of several colors. . Patent Document 1 (anti-counterfeit fiber) showed that there are at least two colors along the length direction of a single fiber having several color portions. Patent document 2 [Anti-counterfeit fiber and anti-counterfeit paper made thereby] disclosed fibers having different colors on the upper surface and the lower surface, that is, the cross section of the fiber is elliptical and corresponds to the elliptical shape. There are two upper and lower surfaces, and there is a clear color difference between the two surfaces. When such fibers are added to paper pulp to produce anti-counterfeit paper, the upper and lower surfaces of the elliptical fibers are parallel to the paper surface due to the interaction with the paper fibers. I will. If the paper is thin or transparent and one fiber is observed in the paper, one color is on one side of the paper and the other color is on the other side of the paper It's above. However, the disadvantage of colored fibers described above is that the visual effect can be mimicked by printing thin lines, and it can be difficult to distinguish whether they are fibers or printed thin lines. If necessary, the only way is to tear the paper or pierce it with a needle for further observation. Not only is it inconvenient, but such methods destroy them, making it impossible for expensive banknotes, securities, etc. Therefore, such anti-counterfeiting effects are limited and fraudsters can almost always be obtained by impersonating when imitating by printing thin lines.

Patent document 3 [Anti-counterfeiting material and anti-counterfeiting document made therefrom] is a filament having an axial length and a substantially round cross-section, and the filament has two or more colors in the cross-section, The anti-counterfeit fibers, which are filaments characterized in that the axially colored portions for each of them extend spirally in the axial direction, are shown. When viewed at some varying angle, the change in the colored pattern on the fiber is not visible, so it becomes an almost flat pattern of visual properties and within an identifiable accuracy, an expensive printing method Can be imitated.
Chinese patent CN0216881210 Chinese patent CN021700929.4 Chinese patent CN021466589.4

  An object of the present invention is to provide an anti-counterfeit material having anti-counterfeit fibers distributed on the anti-counterfeit material, and then observe different color patterns by changing the viewing angle relative to the fibers. And its visual characteristics cannot be imitated by current printing technology.

  Another object of the present invention is to provide anti-counterfeit fibers. When that particular partial surface is present on at least one surface of the anti-counterfeiting material, on that surface, the observer can view different color patterns on this particular portion, respectively, from different viewing angles and Can be viewed separately. Thus, when used in anti-counterfeiting materials, current printing technology has no way to mimic.

  The present invention also provides some anti-counterfeit fibers, and the surface of a specific portion of these anti-counterfeit fibers is naturally present on at least one surface of the anti-counterfeit material in the manufacturing process of the anti-counterfeit material. Can do. This particular part allows the observer to see different color patterns on the particular part from different angles on the surface, each and separately. Thus, when used in anti-counterfeiting materials, current printing technology has no way to mimic.

  A first object of the present invention is an anti-counterfeit material in which anti-counterfeit fibers are distributed and a partial surface of the anti-counterfeit fiber is present on the surface of the anti-counterfeit material, on the partial surface Has an uneven shielding structure on which there are at least two color patterns A and B distributed, which are clearly visible between the at least two color patterns A and B on the partial surface There is a difference, so when viewing the partial surface from different viewing angles, see the color patterns A and B on the surface of the anti-counterfeiting material where the partial surface exists, respectively. This can be realized by an anti-counterfeit material characterized in that

  At least two color patterns on the anti-counterfeit fibers distributed in the anti-counterfeit material shown in the present invention are color patterns that appear under UV light, IR light, infrared light and other invisible light. Include. For color patterns that appear under visible light, the anti-counterfeit material of the present invention can achieve a first level of anti-counterfeit identification, ie general anti-counterfeit identification; UV light, IR light and other invisible light For the color patterns appearing below, these color patterns can be determined by using specific tools to achieve a second level of anti-counterfeit identification. Very fine anti-counterfeit fibers (generally the fiber diameter is less than 100 microns) are distributed in the anti-counterfeit material in the present invention, on which an uneven shielding structure is disposed and the uneven shielding. Since a structure is placed on the surface of the anti-counterfeit fiber and this partial surface can be present on at least one surface of the anti-counterfeit material, between at least two color patterns on the partial surface There is a clear visual difference, and therefore, because of the occlusion of the concavo-convex structure, the observer sees the color pattern on the partial surface separately and separately from different viewing angles on the surface of the anti-counterfeit material Thus, the forgery prevention effect can be realized. By using an uneven shielding structure against the shielding pattern distributed on the partial surface of the anti-counterfeit fiber in the anti-counterfeiting material, such a visual difference occurs, so how valuable they are. There is no way to mimic such a three-dimensional structure, and thus the present invention can efficiently prevent any imitation by printing technology.

  This visual difference is diverse and is seen each and separately by at least two color patterns on the anti-counterfeit fibers distributed in the anti-counterfeit material shown in the present invention which are shielded by the uneven shielding structure. Generated by the color pattern. There are at least two viewing angles a and b present on the surface of the anti-counterfeit material where the partial surface is present, and the color pattern A observes the partial surface of the anti-counterfeit fiber from the observation angle a Then, although it can be seen, the color pattern B cannot be seen because it is shielded by the uneven shielding structure on the partial surface of the anti-counterfeit fiber, and the color pattern B is Although it can be seen by observing the partial surface of the anti-counterfeit fiber from the observation angle b, the color pattern A is shielded by the uneven shielding structure on the partial surface of the anti-counterfeit fiber. In addition, it may be impossible to see. It is one color pattern that is incompletely occluded, but can also be a different visual effect formed by other color pattern characteristics that are completely occluded; in addition, it is in the fiber length direction caused by occlusion. It can also be a jumped visual transition along. In an embodiment, each difference will be explained in more detail on the basis of the figures.

  Another object of the present invention is that the partial surface has an uneven shielding structure thereon, and at least two color patterns A and B are distributed on the partial surface, the at least two color patterns A And B have a clear viewing angle difference on the partial surface, so that when observing the partial surface from different angles on the anti-counterfeit material where the partial surface is present, By anti-counterfeit fibers inserted in the anti-counterfeit material having the partial surface, which can be present on one surface of the anti-counterfeit material, characterized in that each of the color patterns A and B can be seen Realized. Due to the uneven shielding structure arranged on the anti-counterfeit fiber in the present invention and the uneven shielding structure arranged on a partial surface of the anti-counterfeit fiber that can exist on one surface of the anti-counterfeit material, Due to the shielding by the shielding structure, the observer can see this particular part, ie the color pattern with a visual difference on the partial surface, from different angles on the particular surface, respectively and separately. it can. In this way, when used in anti-counterfeiting materials, such visual differences caused by the three-dimensional structure cannot be mimicked by current printing technology.

  Indeed, the object of the present invention for the natural presence of a specific portion of the anti-counterfeit fiber on at least one surface of the anti-counterfeit material is that the anti-counterfeit fiber is directed towards the visible surface of the anti-counterfeit material. To control the surface. Based on theoretical analysis and practical experimentation, the anti-counterfeit fiber surface parallel to the largest protrusion of the anti-counterfeit fiber may necessarily exist on at least one surface of the anti-counterfeit material, and There are three ways to achieve; the first method is to apply a flat transparent material on the outside of the anti-counterfeit fiber, while at the same time making the partial surface of the anti-counterfeit fiber transparent The flat surface of the flat fibers can be naturally parallel to the visible surface of the anti-counterfeit material, and thus the anti-counterfeit material The necessary partial surface can be provided on the visible surface. A second method is to simultaneously bend or distort the anti-counterfeit fiber having a certain toughness, and to place the partial surface on a bent or distorted outer surface, such as Thus, the anti-counterfeit fiber can be provided on the visible surface of the anti-counterfeit material in a self-bent or distorted state. A third method is to flatten the cross section of the full length or partial length of the anti-counterfeit fiber so that the partial surface of the anti-counterfeit fiber is placed on the flat surface in the flat cross section. Or on the surface of the anti-counterfeit fiber having the same orientation as a flat surface. For fibers that have a full length in a flat cross section, the flat surface can be directed to the visible surface when it is necessarily added into the anti-counterfeit material; For fibers having thickness, the flat part is directed to the visible surface, and other parts with the same orientation corresponding to the flat surface may necessarily follow the visible surface.

  FIG. 1 shows one enlarged anti-counterfeit fiber 2 distributed in an anti-counterfeit material 1, a partial surface 3 of the anti-counterfeit 2 being presented on the surface 1 ′ of the anti-counterfeit material, The target surface 3 has a concavo-convex shielding structure thereon, and in this figure, the concavo-convex shielding structure is composed of a triangular element included in the cross-section 4 of the anti-counterfeit fiber 2, and its top angle and the The inclined side surface of the triangular element constitutes an uneven shielding structure, the surfaces 3 ′ and 3 ″ on the two inclined surfaces side constitute a partial surface 3, and the color pattern A is the surface 3 ′. If the color pattern B is distributed on the surface 3 ″ and the partial surface 3 is observed from different viewing angles on the surface 1 ′ of the anti-counterfeit material 1, the color pattern A and B can be seen separately, for example When viewed from the observation angle a, the color pattern A can be seen, and from the observation angle b, the color pattern B can be seen, and there is a difference between the color patterns A and B. Visual differences occur. In order to create an even clearer visual difference, the color patterns A and B can be distributed entirely on the surfaces 3 'and 3 "respectively or together. If the partial surface 3 is observed from different observation angles on the surface 1 ′ of the anti-counterfeit material 1, if the partial surface 3 is observed from a to b in a direction perpendicular to the anti-counterfeit fiber 2, Since there is at least one viewing angle c placed between the two color patterns A and B, from which the anti-counterfeit fiber 2 is generally very thin, the color pattern A or the color pattern Any of B can be seen, so the pattern combined by the color patterns A and B can generally be seen from the viewing angle c.

  At least two color patterns on anti-counterfeit fibers distributed in the anti-counterfeit material shown in the present invention may appear under visible light, UV light, IR light and other invisible light Includes possible color patterns. For color patterns that appear under visible light, the anti-counterfeit material of the present invention can achieve a first level of anti-counterfeit identification, ie general anti-counterfeit identification; UV light, IR light and other invisible light For the color patterns appearing below, these color patterns can be determined by using specific tools to achieve a second level of anti-counterfeit identification. A very fine anti-counterfeit fiber 2 (generally the diameter of the fiber is less than 100 microns) is distributed in the anti-counterfeit material 1 according to the invention, on which an uneven shielding structure is arranged and its Since an uneven shielding structure is placed on the partial surface 3 of the anti-counterfeit fiber and this partial surface 3 can be present on at least one surface of the anti-counterfeit material, at least on the partial surface There is a clear visual difference between the two color patterns, and therefore, due to the shielding function of the concavo-convex structure, the observer can change the color pattern on the partial surface from different viewing angles on the surface of the anti-counterfeit material. Can be seen separately, resulting in a clear visual difference, thereby realizing a forgery prevention effect. By using an uneven shielding structure to shield the properties of the shielding pattern distributed on the partial surface of the anti-counterfeit fiber in the anti-counterfeit material, such a visual difference arises, i.e. the purpose described above. The realization of this depends on the light-shielding effect from different angles due to the important concavo-convex structure on the fiber surface, so all current printing technologies (lithography, drilling, gravure, letterpress printing, jetting, copying, etc. printing) In this way, the present invention can efficiently prevent any imitation by the printing technique.

The visual differences of the present invention are diverse:
At least two color patterns A and B of the anti-counterfeit fiber distributed in the anti-counterfeit material according to the present invention are shielded by the uneven shielding structure, respectively, and it is also seen that various visual differences are caused. This visual difference is associated with the different visuals produced by the differently distributed color patterns on the partial surface of the anti-counterfeit fiber with different uneven shielding structures placed thereon.

  The embodiment shown in FIG. 1 shows a color pattern distribution that can be completely shielded from each other by the uneven shielding structure because of the shielding structure extending along the length direction of the anti-counterfeit fiber 2. In this way, the different vision perpendicular to the length direction of the anti-counterfeit fiber can be changed significantly only under shielding. Since the anti-counterfeit fiber 2 is very thin and fine, it is recommended that the maximum cross-sectional diameter of the anti-counterfeit fiber is 0.25 mm or less. The visible width of the anti-counterfeit fiber is the length direction of the anti-counterfeit fiber 2. If observed perpendicular to the image, it is very limited, so when changing from the observation angle a to the observation angle b, a clear visual difference is produced only if there is a difference between the color patterns A and B. It is the only way to get the difference that can be felt by the general public. It is an advantage of this embodiment that the normal visual sensitivity is largely changed only based on the difference between the color patterns A and B, and this difference preferably occurs only in different colors, but the same However, both the color and the pattern may be different. In this embodiment, there are at least two viewing angles a and b present on the surface 1 ′ of the anti-counterfeit material 1 ′ where the partial surface is present, and the color pattern A is from the viewing angle a. When the partial surface of the anti-counterfeit fiber is observed, it can be seen, but the color pattern B is shielded by the uneven triangular structure on the partial surface 3 of the anti-counterfeit fiber 2. Cannot be seen, and the color pattern B can be seen when observing the partial surface 3 of the anti-counterfeit fiber 2 from the observation angle b, but the color pattern A is It cannot be seen because it is shielded by the concave-convex triangular structure on the partial surface 3. For the second level of anti-counterfeiting, by using fluorescent fibers, IR fibers, etc., that is, by observing these tools, this embodiment is based on the difference between the color patterns A and B. It is not necessarily limited. For example, the color patterns A and B may be completely identical within the normal visual range, but one of them shall be processed by some invisible light, thus Thus, since the visual difference between them can be seen by using a specific tool that can identify invisible light, an anti-counterfeit effect can be realized. In this embodiment, the uneven shielding structure is formed by a method for forming one pattern completely separated between the color patterns A and B without overlapping each other, and the partial surface 3 of the anti-counterfeit fiber 2. Visual effects that are placed on top and thus shield each other are realized.

  A clear visual difference between at least two color patterns A and B on the partial surface 3 is formed by one color pattern A that cannot be completely shielded and another color pattern B that can be completely shielded. Such visual effects are often caused by the incorporation relationship of color pattern A, for example, color pattern A is fully or partially incorporated in color pattern B, That is, if the partial surface 3 of the anti-counterfeit fiber is observed from an observation angle a, the uneven shielding structure on the partial surface 3 of the anti-counterfeit fiber completely shields the color pattern B. Only the color pattern A can be seen. If the partial surface 3 of the anti-counterfeit fiber is observed from the observation angle b, the color pattern B can be seen by the uneven shielding structure on the partial surface 3 of the anti-counterfeit fiber. However, the color pattern A is not completely or partially blocked. The color patterns A and B to form such a visual difference must be different. At least the colors of these color patterns are different to produce a strong visual difference.

  When all of them are not completely occluded, a visual difference can also be made, in which case the color patterns A and B can be two patterns with several parts overlapping, i.e. If the partial surface 3 of the anti-counterfeit fiber is observed from an observation angle a, the visual is only the color pattern A because of the uneven shielding structure on the partial surface 3 of the anti-counterfeit fiber. You can see shielding one part of B. If the partial surface 3 of the anti-counterfeit fiber is observed from an observation angle b, the vision is that only the color pattern A is the color pattern B because of the uneven shielding structure on the partial surface 3 of the anti-counterfeit fiber. It can be seen that one part of the screen is shielded. Thus, A and B are not completely shielded, but their relative parts have been shielded. Since the human visual resolution is limited, the pattern in the human eye can be a constituent pattern in which part of the color pattern B is incorporated in the color pattern A. The color pattern B cannot be simply incorporated completely, or the color pattern B cannot be completely incorporated into the color pattern B. The color patterns A and B for producing a clear visual difference shall be different with at least different color characteristics.

  It can also be a visual difference caused by visual transformation jumping along the length of the anti-counterfeit fiber caused by shielding. This is because humans have a longer vision along the length direction of anti-counterfeit fibers (the best length of anti-counterfeit fibers is 15 mm or less, compared to its width of 0.2 mm) In this way, when at least two color patterns A and B are distributed at different positions along the length of the anti-counterfeit fiber (as shown in FIG. 1) Thus, jumped visual changes can be generated, which are different from those distributed axially, and will be described in detail in the following embodiments. Visual changes have relatively low demands on color patterns. That is, the color patterns can be the same or can cause jumping visual changes, with a clear visual difference at positions along the length of the anti-counterfeit fiber.

Variety of color patterns of the present invention and their formed visual effects:
The at least two color patterns A and B may be patterns composed of various single colors or multiple color lines. The anti-counterfeit fiber in the present invention is so thin and fine that the more simple and direct it is, the more valuable it is for a more practical first level anti-counterfeit identification. Since the color characteristics are the easiest for human identification, the two color patterns A and B of different colors will be described in detail hereinafter.

  As shown in FIG. 1, the color pattern A and the color pattern B are a colored line A and a colored line B that are parallel and have different color characteristics. For example, the colored line A is red. The present and colored line B is blue. If the partial surface 3 of the anti-counterfeit fiber is observed from the observation angle a, only the red line can be seen, but it is blocked by the uneven shielding structure on the partial surface 3 of the anti-counterfeit fiber. The blue line cannot be seen. Thus, when a normal person observes the partial surface 3 of the anti-counterfeit fiber from the observation angle b, the fiber can only see a red line, but the partial surface 3 of the anti-counterfeit fiber. I feel that the blue line cannot be seen because it is shielded by the upper uneven shielding structure. Thus, when an ordinary person observes the partial surface 3 of the anti-counterfeit fiber from the observation angle c, the fiber is red and the colored lines are very close to each other, so the red line and the blue line I feel that I can see both lines at the same time. Ordinary people can only feel the structured effect of red and blue lines, i.e. the fibers can feel something black.

  In the embodiment shown in FIG. 1, colored line A and colored line B, which have different color characteristics but are parallel, are also parallel to the length direction of the anti-counterfeit fiber. If the viewing angle is changed, the whole fiber will change its color from red to blue with a unique visual conversion effect. The conversion angle from angle a to angle b should preferably be 120 degrees or less. In this visual characteristic design, the most obvious color change of the fiber occurs when the fiber surface is observed at different angles in a position perpendicular to the length direction of the fiber.

  FIGS. 2a and 2b show that pattern A and pattern B in which the configured effects of colors A1, A2, and A3 and the configured effects of colors B1, B2, and B3 have different color characteristics and are parallel, respectively. It shows that. Each of the colors A1 to A3 and the colors B1 to B3 has a strip shape and is perpendicular to the length direction of the anti-counterfeit fiber. In this visual characteristic design, the most obvious color change of the fiber occurs when the fiber surface is observed at different angles in a position perpendicular to the length direction of the fiber.

  FIG. 3 shows that the configured A1, A2, A3 colors and the configured B1, B2, B3 colors create patterns A and B that have different color characteristics and are parallel, respectively. . Each of the colors A1 to A3 and the colors B1 to B3 has a strip shape and an intersecting angle of 0 to 90 degrees with respect to the length direction of the anti-counterfeit fiber. In this visual characteristic design, the most obvious color change of the fiber is when the observation position is first oblique to the fiber length direction and the observation angle is changed to observe the fiber surface. Get up.

  The color pattern A and the color pattern B have the same pattern and color characteristics, but the color pattern A and the color pattern B have different positions on the length direction of the anti-counterfeit fiber (see FIG. 4). thing). For example, the color pattern A and the color pattern B are all black, the color pattern A is placed at the front of the fiber, and is composed of A1, A2, and A3 colors, and the color pattern B is Located at the rear of the fiber and composed of B1, B2, B3 colors, when changing the viewing angle, all fibers move their position in a jumping style with a unique visual conversion effect.

  Figures 5a to 5g show the situation of color pattern A and color pattern B distributed radially and extending in the axial direction but having different positions in the fiber length direction. The color pattern A and the color pattern B may have positions that are completely overlapped, partially overlapped, partially aligned, or separated from each other in the length direction of the anti-counterfeit fiber. FIG. 5a: If the positions of the color pattern A and the color pattern B are completely overlapped in a radial pattern, the strip-shaped color pattern A is red and the strip-shaped color pattern B is black. Yes, when the viewing angle is changed, all fibers show a color change from red to black, and the position of the fiber with a unique visual conversion effect does not move visually. FIG. 5b: If the positions of the color pattern A and the color pattern B are partially overlapped in the radial direction and the viewing angle is changed, all fibers are visually changed from red to black. Shows color change and moves jumped position, but jumping with unique visual conversion effect is small. FIG. 5c: If the positions of the axes of the color pattern A and the color pattern B are connected and the viewing angle is changed, all fibers visually change color from red to black. Show and move the jumped position, but jumping is a form where the head is connected to the tail. FIG. 5d: If the positions of the axes of the color pattern A and the color pattern B are separated, changing the angle of observation, all fibers visually change color from red to black. Show and move the jumped position, but jumping with a unique visual transformation effect is a jumping style.

  FIG. 5e shows the situation of color pattern A and color pattern B composed of different colors, which may be a single color or multiple color configurations. For example, strip-shaped color pattern A is two lines of different colors connected from head to tail, one line is red A1 and the other is green A2. Color pattern B is a black line, and when the viewing angle is changed, all fibers visually change color with a unique visual conversion effect from red / green double color to black single color. Show.

  The color pattern may be white, blank, or the same color as the color on the surface of the anti-counterfeit fiber. In FIG. 5f, if the strip-shaped color pattern A is red and the strip-shaped color pattern B is white and distributed on the entire convex surface 3 '' of the anti-counterfeit fiber, When the surface of the anti-counterfeit material is white, changing the viewing angle changes all fibers with a unique visual conversion effect from red to invisible. If the strip-shaped color pattern A is black and the strip-shaped color pattern B is yellow and distributed on the entire convex surface 3 ″ of the anti-counterfeit fiber, the surface of the anti-counterfeit material is When it is yellow, changing the viewing angle changes all fibers with a unique visual conversion effect from black to invisible. Therefore, if the color of color pattern B is the same as the color on the surface of the anti-counterfeiting material, the cross section of the fiber is visually the partial or complete color pattern B incorporated in color pattern A. However, the color pattern A cannot be incorporated into the color pattern B (see FIG. 5g).

In the present invention, the uneven shielding structure is diverse:
The uneven shielding structure is composed of a cross section of an anti-counterfeit fiber having at least one triangular element, and the triangular element refers to a cross sectional structure having at least one apex angle and two pieces corresponding thereto. The typical structure is a triangular cross section, but may be a quadrangular cross section or a polygonal cross section. The cross section in FIG. 1 is a triangle, the color pattern A is placed on a surface 3 ′ related to one oblique side of the triangle, and the color pattern B is a surface related to other oblique sides of the triangle. Located 3 ″ above. The triangle is an uneven shielding structure for realizing one presented color pattern and the other shielded color pattern. When the observation is changed from the angle a to the angle b, it preferably exceeds 120 degrees. It is easy to answer the request of no change angle.

  The concavo-convex shielding structure is composed of parallel triangles, and the configuration of all color patterns on the relative hypotenuse of each triangle constitutes the color pattern A, and the other relative hypotenuse of each triangle. The configuration of all the upper color patterns constitutes a color pattern B. Because the fibers are very thin and fine, the concavo-convex shielding structure made of a single triangle is difficult to exist on the surface of the anti-counterfeiting material in the shape of an apex just upward, for this reason. For this reason, the triangle must be made in a flat shape, but for such a flat shape, the sensitivity of color pattern conversion is low when changing the viewing angle, and the When the fiber is a certain width, the color pattern A or color pattern B is very thin and fine, which affects the visual effect. Therefore, the parallel triangle configuration design in the present invention can overcome the above drawbacks.

  6a to 6b are drawings for the anti-counterfeit fiber 2 having a single triangular cross section in the anti-counterfeit material 1, of which FIG. 6a is a cross-sectional view and FIG. 6b is a plan view. . Since the color pattern A and the color pattern B are on the slopes relative to the two sides of the triangle, and the anti-counterfeiting material has transparency, the color pattern A and the color pattern existing on the anti-counterfeiting material B is visible and when viewed from an angle a, the color pattern A can be seen, but the color pattern B is viewed because it is shielded by a triangular convex structure I can't. When viewed from an angle b, the color pattern B is visible, but the color pattern A is the same because it cannot be seen because it is shielded by a triangular convex structure. . Further, the anti-counterfeit fiber 2 in the anti-counterfeit material 1 is bent along an equally divided axis between the two sides, and both the surface A and the surface B are simultaneously present on the surface of the anti-counterfeit material. Alternatively, the surface corresponding to the third side 6 is presented alone on the surface of the anti-counterfeit material. Here, bending along the equally divided axis 5 is a main problem for accurately controlling the surface of the fiber having A and B on the upper surface simultaneously. In fact, the equally divided axis is shown in FIG. A virtual control axis that plays the same role in the next drawing as the role in the series, the purpose of which is to simultaneously provide the color pattern A and the color pattern B on the surface of the anti-counterfeit material 1. The color of the surface corresponding to the third side 6 of the cross section is white or the same as the color on the surface of the forgery prevention material 1. The main reasons for choosing this triangular structure are based on three aspects:

  1. Generally speaking, when the width of the colored line is less than 30 microns, it is difficult for the eyes to observe, but the triangular structure with the same fiber height is more colored than is visible. When the area has characteristics and the paper or plastic film is thinner, the fiber height cannot be larger than the thickness of the paper or plastic film. Generally, the thickness of the banknote is 90 microns or less. And the thickness of the copy paper is 80 microns or less, and thus if the fiber needs to be added to the paper at such thickness, the fiber with a triangular structure is The best choice. Compared to the square cross section, the triangular cross section has better stability and the color patterns A and B are provided on the surface of the anti-counterfeit material under certain forming presses in the paper manufacturing process. Can be certain. 3. One characteristic of the triangular structure is that the color pattern on the surface corresponding to edge 6 can potentially exist alone on the surface of the anti-counterfeit material, and the uneven shielding on this flat surface Due to the lack of structure, it is impossible to make a visual difference caused by changing the viewing angle, so in order to avoid this situation we have either a white color pattern on this surface or When the color pattern is provided on the surface of the anti-counterfeiting material, the problem is that the existing fiber surface is white, Or since it is the same color as the color on the surface of the anti-counterfeit material that cannot be seen by the eyes, it can be surely solved.

  FIGS. 7a to 7c are drawings of anti-counterfeit fibers having a double-connected triangular cross section in anti-counterfeit materials, of which FIG. 7a is a cross-sectional view and FIGS. 7b and 7c are plan views thereof. It is. Since the anti-counterfeiting material has a certain degree of transparency, the triangular color pattern A and the triangular color pattern B existing on the surface of the anti-counterfeiting material can be seen by the eyes, and are observed from the angle a. Color pattern A (as a structured visual effect of A1 + A2) can be seen, but color pattern B cannot be seen because it is shielded by a triangle. Conversely, when viewed from angle b, color pattern B (as a configured visual effect of B1 + B2) can be seen, but color pattern A cannot be seen because it is shielded by a triangle. Furthermore, the fibers in the anti-counterfeit material can be bent along the equally split axis 5 (see FIG. 3b) or may be straight (see FIG. 3c). In this way, the surface with the color pattern A placed thereon and the surface with the color pattern B placed thereon are simultaneously provided on the surface of the anti-counterfeit material 1 or edges It can be ensured that the surface corresponding to 6 is provided alone on the surface of the anti-counterfeit material 1. We make a color pattern on the surface corresponding to the side 6 in white or the same color as the surface color of the anti-counterfeiting material 1. The actual effects of the structure are as follows: Compared to a single triangle, when the fiber height is the same, there is a larger visible region, so it can be used in very thin paper, for example, the paper thickness is less than 50 microns is there. 2. Since the fiber is generally flat, when the fiber having a certain hardness is short in length, it does not need to bend, even though the fiber has the color pattern A and It is ensured that any one of the surfaces of the color pattern B is simultaneously present on the surface of the anti-counterfeit material 1 or that the surface corresponding to the side 6 is present on the surface of the anti-counterfeit material 1. be able to.

  8a to 8b are drawings of the anti-counterfeit fiber 2 having a single square cross section in the anti-counterfeit material 1, in which FIG. 8a is a cross-sectional view and FIG. 8b is a plan view. Compared to the single triangle shown in FIG. 6 series, the anti-counterfeit fiber 2 is bent along the equally divided axis 5 and the visible region in the anti-counterfeit material 1 is when the height of the fibers is the same. However, the advantage is that of the surface (the surface with the placed color pattern A and the color pattern B or the surface with the placed color pattern A ′ and the color pattern B ′. If either one) is upward and the visual angle is changed, the fibers can all exhibit a color change effect. It is one of the choices for paper with a large thickness or film.

  9a to 9c are drawings of the anti-counterfeit fiber 2 having a tri-connected quadrilateral cross section in the anti-counterfeit material 1, in which FIG. 9a is a cross-sectional view and FIGS. 9b and 9c are plan views thereof. FIG. Compared to the single square shown in the FIG. 8 series, when the fiber height is the same, it has a larger visual area. Since the fiber has a flat shape as a whole, even if the fiber having a certain hardness has a shorter length, the fiber does not need to bend, even if the fiber has a color pattern A (from A1, A2, and A3 It can also be ensured that the color pattern B (consisting of B1, B2 and B3) is present simultaneously on the surface of the anti-counterfeiting material.

  FIGS. 10a to 10d are drawings of anti-counterfeit fibers having a trapezoidal cross section in the anti-counterfeit material, of which FIGS. 10a and 10b are cross-sectional views thereof and FIGS. FIG. The trapezoid has good stability, even if the surface with the placed color pattern A and color pattern B has a very inclined shape (the greater the inclination, the higher the sensitivity) It is still stable, especially when the fiber with a certain hardness has a shorter length, even if the fiber does not need to bend, the color pattern A and the color pattern B are It can be assured that they are simultaneously on (see FIG. 10c). FIG. 10a shows a trapezoid compared to the two trapezoidal configurations shown in FIG. 10b, the advantage of which is that the fiber height is smaller, the surface color corresponding to edge 6 in FIG. 10a. Is white or the same color as that of the surface of the anti-counterfeiting material 1; compared to FIG. 10a, the arrangement shown in FIG. When changing the color change effect can be produced. It is therefore an alternative to paper or film with a greater thickness. The surface color corresponding to the base 6 of the trapezoid shown in FIG. 10 a is white or the same color as the surface color of the anti-counterfeit material 1.

  FIGS. 11 a to 11 f are drawings of the anti-counterfeit fiber having the transparent material 7 in the anti-counterfeit material 1. Since the transparent material 7 is transparent, the partial surface 3 having the uneven shielding structure on the anti-counterfeit fiber in the present invention is necessarily present on the surface of the anti-counterfeit material. FIGS. 11a and 11b show that the fibers having a single triangular or single quadrangular cross section are respectively applied with a round transparent material 7, the purpose being a process for producing paper. Or in the process of adding plastics, to increase the compressive strength of the fibers in order to ensure the stability of the cross-sectional shape of the fibers. FIGS. 11c and 11d show that the fibers having a single triangular or single quadrangular cross section are respectively applied with a flat transparent material 7, the purpose is to produce paper In order to ensure the stability of the cross-sectional shape of the fiber in the process or in the process of adding plastics, not only can the fiber compressive strength be increased, but even if the fiber is not bent, It is to ensure that the A and B surfaces are present simultaneously on the surface of the anti-counterfeiting material. FIGS. 11e and 11f show that fibers having a single triangular or single quadrilateral cross section are applied with a flat transparent material 7, the purpose is to produce paper To increase the compressive strength of the fibers in order to ensure the stability of the cross-sectional shape of the fibers in the process or during the process of adding plastics.

  FIGS. 12 a to 12 e are cross-sectional views of a vacuum-coated aluminum layer having a shielding function between the color pattern A and the color pattern B on the anti-counterfeit fiber 2. 2. Because of the very small size of the fibers, when using organic materials to make the fibers, each color between color pattern A and color pattern B interferes with each other and color pattern A and color pattern B We have found in our practice that it produces a significant impact on the image and reduces the visual difference between color pattern A and color pattern B. To solve this problem, when the Al coating layer is only 0.2 microns thick, Al coating is not only low cost, but also has the function of completely shielding, so we An Al coating layer 8 is designed between the color pattern A and the color pattern B. FIG. 12a is a drawing of a fiber with a triangular cross section and an Al coating layer 8 placed at an intermediate position on the material, which is equivalent to a configuration made of two fibers of different colors, The interface is applied with aluminum. FIG. 12b is a drawing of a fiber with a triangular cross-section and an Al coating layer 8 placed on the fiber surface, after the aluminum application, the surface of the fiber can be glued with a layer of color, Or it hold | maintains only with an aluminum layer. FIG. 12c is a drawing of a fiber with a square cross-section and an Al coating layer 8 placed at an intermediate position on the material, the interface between the two different colors on this configuration being coated with aluminum. Yes. FIG. 12d is a drawing of a fiber with a square cross-section and an Al coating layer 8 placed on the surface of the fiber, the Al coating layer 8 being placed on one axis 5 on the surface, aluminum After application, the surface of the fiber can be adhered using a layer of color or is only retained with an aluminum layer. FIG. 8e is a drawing of a fiber with an Al coating layer 8 placed on a triangular surface B1, B2, B3 with the same vision on a multi-connected triangle cross-section and anti-counterfeit fiber. Furthermore, the surface of all anti-counterfeit fibers can be first applied with aluminum, after which color pattern A and color pattern B are printed on the relative surface.

  The concavo-convex shielding structure can be arcuate (see FIG. 13), serrated, or other irregularly curved shape.

  In the above embodiment, the anti-counterfeit material is an organic film. Previously, no anti-counterfeit fiber was added to the plastic film because of the anti-counterfeit function. The reason is that the plastic film is difficult to tear and easily melts together with the anti-counterfeit fiber, and thus, the plastic film is difficult to tear, or the anti-counterfeit fiber is used to check the anti-counterfeit fiber. It is difficult to take out. When a counterfeiter imitates visual characteristics by printing fine lines, there is no easy way to verify it. In the present invention, it is not necessary to tear the plastic film for observation, so it can be used in the plastic film area.

  In the above embodiment, the anti-counterfeit fiber is a fluorescent fiber, and there is a clear visible visual difference when irradiated through a fluorescent lamp and when the observation angle is changed.

  In the above embodiment, the anti-counterfeit fiber is an IR fiber, and when it is irradiated via an IR lamp and the observation angle is changed, there is a clear visual difference.

The method for controlling the partial surface 3 of the anti-counterfeit fiber provided on the surface of the anti-counterfeit material is as follows:
In order to realize the object of the present invention, the most important technique is to control the efficient uneven shielding structure of the fibers provided on the surface of the anti-counterfeit material in the actual manufacturing process. In the paper manufacturing process, theoretical analysis and extensive experimentation show that when the fiber has a certain elastic hardness, the maximum protruding area of the total fiber shape is surely present on the surface of the paper. ing. In the present invention, the protrusion area of the anti-counterfeit fiber refers to the minimum square area corresponding to the protrusion line of the substance, that is, when the anti-counterfeit fiber is straight and the cross section of the fiber is equal in the length direction. The minimum square area is the area of the protrusion line of material, see the area covered by the slant lines in FIG. 14a. When the anti-counterfeit fibers are straight and the cross-sections of the fibers are not equal in the length direction, the minimum square area is the product area of the minimum width of the protrusion area of the anti-counterfeit fiber material and is covered by the inclined line in FIG. Refer to the area to be used. When the anti-counterfeit fiber is curved, the minimum square area is the square area constructed and covered by the projection line of the bent material of the anti-counterfeit fiber, and the area covered by the inclined line in FIG. See

  The other description has the same effect as the above description, and the partial area 3 of the anti-counterfeit fiber corresponding to the two largest areas in the minimum cube of the anti-counterfeit fiber wraps the anti-counterfeit fiber 2 in three dimensions. Therefore, when fully enveloping, the two largest areas of the smallest cube will definitely be directed to the surface of the anti-counterfeit material due to their lowest energy state. Therefore, the partial surface 3 having the uneven shielding structure thereon can exist on the surface of the anti-counterfeit material.

  Thus, the present invention is specifically designed as follows, and these designs can also be used to distribute anti-counterfeiting materials in a sandwich with paper therein or with a plastic film therein. It can also be used to dispense it into a sandwich or to dispense it into a single layer plastic film.

  The anti-counterfeit fiber 2 has a curved shape, and the upper surface of the bent fiber is a partial surface 3 of the anti-counterfeit fiber, see FIGS. The minimum width c of the cross-section of the anti-counterfeit fiber longitudinally and parallel to the surface of the anti-counterfeit material is equal to or less than the maximum width d of the cross-section perpendicular to the surface of the anti-counterfeit material, ie The major axis d of the cross section in the length direction of the anti-counterfeit fiber 2 is perpendicular to the surface of the anti-counterfeit material (see FIG. 15b), and thus when the fiber is in a bent state, Even when it is not a flat shape, its cross-section can expose the required partial surface 3 of anti-counterfeit fibers on the surface of the paper. The maximum horizontal overcoming length formed by the bent anti-counterfeit fiber 2 is the geometric width e, see FIG. 15a. When the geometric width is at least twice the long axis d of the cross section in the length direction of the anti-counterfeit fiber, the bent anti-counterfeit fiber 2 is in its naturally bent state of the anti-counterfeit material. It can be completely present on the surface.

  If the cross section of the anti-counterfeit fiber 2 has a flat shape and at least some portions 9 in the length direction of the fiber, a flat surface corresponding to the flat shape exists on the surface of the anti-counterfeit material. (See FIG. 16). Since the cross-section in the length direction of the anti-counterfeit fiber 2 can also be a perfectly flat shape, a flat surface corresponding to the flat shape will be present on the surface of the anti-counterfeit material. The color of the flat portion of the anti-counterfeit fiber 2 is preferably blank or white, or the same color as the color on the surface of the anti-counterfeit material 1.

  The material of the anti-counterfeit fiber in the present invention can be an organic material or a metal material. The anti-counterfeiting material in the present invention refers to paper, paperboard or organic film. The anti-counterfeit fiber 2 is placed between two pulp layers, between two organic films, between a pulp layer and another material layer, or between an organic film layer and another material layer. Or can be attached to the surface of the anti-counterfeit material, or can be inserted into the surface of the anti-counterfeit material by other methods.

  The various uneven | corrugated shielding structure of the forgery prevention fiber in this invention can be formed with a die | dye. The color pattern on the uneven shielding structure can be formed on the anti-counterfeit fiber by a process such as an adhesive film, precision printing, and hot pressing. For a color pattern with a pure color, it can be made first by jetting and then synthetically, and can also be composed of hot-pressed fibers of different colors.

  The anti-counterfeit fiber can be inserted into the paper by adding it directly in the paper manufacturing process, or it can be inserted by pressing it into multiple layers of paper.

FIG. 1 is a schematic diagram of the present invention. 2a to 2b are diagrams of color patterns A and B arranged along and in parallel in the length direction of the anti-counterfeit fiber, FIG. 2a is a plan view and FIG. FIG. FIG. 3 is a diagram of color patterns A and B which are arranged in parallel on the anti-counterfeit fiber but are inclined and distributed in the length direction of the anti-counterfeit fiber. FIG. 4 is a side view of the color patterns A and B on the anti-counterfeit fiber distributed along the length direction of the anti-counterfeit fiber. FIGS. 5a to 5g are state diagrams of color patterns A and B on anti-counterfeit fibers distributed radially, extending in the axial direction and at different positions in the length direction. 6a to 6b are single triangle sectional views of the anti-counterfeit fiber in the anti-counterfeit material, in which FIG. 6a is a sectional view and FIG. 6b is a plan view. 7a to 7c are views of a double-connected triangular section of anti-counterfeit fibers in the anti-counterfeit material, in which FIG. 7a is a cross-sectional view, and FIGS. 7b and 7c are plan views. 8a to 8b are single quadrangular cross-sectional views of the anti-counterfeit fiber in the anti-counterfeit material, in which FIG. 8a is a cross-sectional view and FIG. 8b is a plan view. 9a to 9c are tri-connected quadrilateral cross-sectional views of anti-counterfeit fibers in the anti-counterfeit material, in which FIG. 9a is a cross-sectional view and FIGS. 9b and 9c are plan views. 10a to 10d are trapezoidal cross-sectional views of the anti-counterfeit fiber in the anti-counterfeit material, in which FIGS. 10a and 10b are cross-sectional views, and FIGS. 10c and 10d are plan views. FIGS. 11a to 11f are anti-counterfeit figures coated with a transparent material in an anti-counterfeit material, of which FIGS. 11c and 11d are a single triangle cross-section and a single quadrilateral cross-section coated with a flat transparent material, and FIGS. 11e and 11f are coated with a flat transparent material. FIG. 6 is a multiple triangle cross-sectional view and a multiple quadrilateral cross-sectional view. 12a to 12e are cross-sectional views for an Al vacuum coating shielding layer between color patterns A and B of anti-counterfeit fibers, of which FIG. 12a is a triangular cross section with an Al coating layer in the middle of the material 12b is a triangular cross-sectional view with an Al coating layer on the material surface, FIG. 12c is a quadrangular cross-sectional view with an Al coating layer in the material, and FIG. FIG. 12e is a multi-triangular cross-section with an Al coating layer on the same visible surface of the material. FIG. 13 is a cross-sectional view of an anti-counterfeit fiber having a curved cross-section in the present invention. 14a, 14b and 14c are drawings for the minimum square area of anti-counterfeit fibers having different shapes. 15a and 15b are diagrams of bent anti-counterfeit fibers distributed in the anti-counterfeit material according to the present invention. FIG. 16 is a front view of a partial cross section of a flat anti-counterfeit fiber.

Claims (20)

  The anti-counterfeit fiber (2) is distributed and the partial surface (3) of the anti-counterfeit fiber (2) is an anti-counterfeit material present on the surface (1 ′) of the anti-counterfeit material (1). There is an uneven shielding structure on the partial surface (3), and there are at least two color patterns A and B distributed thereon, on the partial surface (3) the at least two colors There is a clear visual difference between patterns A and B, so that when viewing the partial surface (3) from different viewing angles, the partial surface (2) The anti-counterfeiting material is characterized in that the color patterns A and B can be respectively seen on the surface (1 ′) of the anti-counterfeiting material (1) in which is present.   There are at least two viewing angles a and b on the surface (1 ′) of the anti-counterfeiting material (1) where the partial surface (3) is present, and the color pattern A has an observation angle a When the partial surface (3) of the anti-counterfeit fiber (2) is observed, the color pattern B is on the partial surface (3) of the anti-counterfeit fiber (2). The color pattern B cannot be seen because it is shielded by the concavo-convex shielding structure, and the color pattern B is seen when the partial surface (3) of the anti-counterfeit fiber (2) is observed from the observation angle b. The color pattern A is characterized in that it cannot be seen because it is shielded by an uneven shielding structure on the partial surface (3) of the anti-counterfeit fiber (2). The anti-counterfeit material according to claim 1.   The uneven shielding structure of the anti-counterfeit fiber (2) is composed of at least one triangular element in the cross section (4), and the color pattern A is on the sloped surface (3 ′) at the top angle of the triangular element. The anti-counterfeiting material according to claim 1, wherein the color pattern B is on the other slope side surface (3 ″) of the top angle.   The anti-counterfeiting material according to claim 3, characterized in that the cross-section (4) of the anti-counterfeit fiber (2) is composed of one triangle or multiple connected triangles.   The anti-counterfeit fiber (2) is a bent fiber having a triangular cross section (4), and the color patterns A and B are respectively located on the inclined surfaces of the two sides of the triangle and correspond to the third side The surface color is white or the same color as the surface of the anti-counterfeiting material (1), and the anti-counterfeit fiber (2) is along the equally divided axis (5) between the two sides. The anti-counterfeiting material according to claim 4, wherein the anti-counterfeiting material is bent.   The cross section of the anti-counterfeit fiber (2) is constituted by one quadrangular shape or a multi-connected quadrangular shape, and the anti-counterfeit fiber (2) is bent along the equally divided axis (5). The anti-counterfeiting material according to claim 3, wherein   The anti-counterfeiting material according to claim 3, wherein the anti-counterfeiting fiber (2) has a cross-section of one trapezoid or two connected trapezoids.   The partial surface (3) of the anti-counterfeit fiber (2) has a protrusion on the surface of the anti-counterfeit material (1) at the maximum protrusion size of the anti-counterfeit fiber (2), or The anti-counterfeiting material according to any one of claims 1 to 7, wherein the anti-counterfeiting material is parallel to the largest protrusion.   The anti-counterfeit fiber (2) is a bent fiber or a bent fiber that can exist on the surface of the anti-counterfeit material (1) in a self-bent or self-curved state. Anti-counterfeiting material described in 1.   The cross section of the anti-counterfeit fiber (2) has a flat shape along the entire length or a partial length direction, and the partial surface (3) of the anti-counterfeit fiber (2) is on the flat surface. Or anti-counterfeiting according to any one of claims 1 to 7, characterized in that it is placed on the surface of the anti-counterfeiting material (1) having the same protrusion on the anti-counterfeiting material (1). material.   11. The anti-counterfeiting material according to claim 1, wherein an outer side of the anti-counterfeit fiber (2) is coated with a transparent material (7).   The transparent material (7) coated on the outside of the anti-counterfeit fiber (2) has a flat shape, and the partial surface (3) of the anti-counterfeit fiber (2) is formed on the transparent material (7). The anti-counterfeiting material according to claim 11, wherein the anti-counterfeiting fiber (2) is on the corresponding surface.   The anti-counterfeit material according to any one of claims 1 to 12, wherein the anti-counterfeit material (1) is an organic film.   The forgery according to any one of claims 1 to 13, characterized in that the anti-counterfeit fiber (2) also includes a fiber made by adding a fluorescent material or an infrared light emitting material. Prevention material.   15. Counterfeiting according to any one of the preceding claims, wherein there is at least one layer of vacuum-applying aluminum for light shielding between the surfaces located by the at least two color patterns A and B Prevention material.   The partial surface (3) has an uneven shielding structure with at least two color patterns A and B distributed, the at least two color patterns A and B on the partial surface (3) The surface (1 ′) of the anti-counterfeiting material (1) with the partial surface (3) when viewed from different angles of the partial surface (3), with a clear viewing angle difference Color patterns A and B have the partial surface (3) present on one surface (1 ′) of the anti-counterfeiting material (1), characterized in that each can be seen The forgery prevention fiber inserted in the forgery prevention material as described in any one of Claims 1-15.   There are at least two viewing angles a and b on the surface (1 ′) of the anti-counterfeit material (1) where the partial surface (3) is present, and the color pattern A is from the viewing angle a When the partial surface (3) of the anti-counterfeit fiber (2) is observed, it can be seen, but the color pattern B is uneven on the partial surface (3) of the anti-counterfeit fiber (2). Although it cannot be seen because it is shielded by the shielding structure, and the color pattern B can be seen when observing the partial surface (3) of the anti-counterfeit fiber (2) from the observation angle b, 17. The color pattern A is invisible because it is shielded by an uneven shielding structure on the partial surface (3) of the anti-counterfeit fiber (2). Anti-counterfeit fiber.   The partial surface (3) has a protrusion on the anti-counterfeiting material (1) or is parallel to the maximum protrusion at the maximum protrusion size of the anti-counterfeit fiber (2). The anti-counterfeit fiber according to claim 16 or 17.   The anti-counterfeit fiber (2) is a bent fiber or a bent fiber that can exist on the surface of the anti-counterfeit material (1) in a self-bending or self-curving state. Anti-counterfeit fiber.   The cross section (4) of the anti-counterfeit fiber (2) has a flat shape along the entire length or a partial length direction, and the partial surface (3) of the anti-counterfeit fiber (2) is flat. The anti-counterfeit fiber according to claim 16 or 17, wherein the anti-counterfeit fiber is placed on the surface of the anti-counterfeit material having the same protrusion on the anti-counterfeit material.

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