Multilayer scene change anti-counterfeiting structure

Abstract

The utility model relates to a multi-layer scene change anti-fake structure which comprises a base material layer and at least three magnetic ink layers. The orientated magnetic field directions of the magnetic sheets in the magnetic ink layers are different, so that when the structure is observed at different angles, different visual effects are presented, and the anti-counterfeiting capability is improved. Wherein magnetic sheet directional magnetic fields in the first magnetic ink layer, the second magnetic ink layer, the third magnetic ink layer and the third magnetic ink layer are parallel magnetic fields, and included angles are 160-180 degrees, 140-170 degrees and 10-40 degrees respectively. And a magnetic sheet directional magnetic field in the fourth magnetic ink layer is a non-parallel magnetic field or the fifth magnetic ink layer is added, so that the anti-counterfeiting performance is enhanced. At least a part of a magnetic ink layer pattern of the structure is composed of net lines, and a full-edition pattern is formed. Besides, in the intersection area, the patterns of different magnetic ink layers can be mutually embedded, for example, the pattern of the magnetic ink layer A is located above the full pattern A1 and is composed of net lines; or the pattern B of the magnetic ink layer is located above the pattern A and is composed of lattice points and the like. Due to the design, the anti-counterfeiting characteristic of the structure is enhanced.

Description

Technical Field

[0001] This utility model relates to a multi-layer anti-counterfeiting structure with changing backgrounds, and in particular, an anti-counterfeiting structure with changing backgrounds composed of at least three layers of magnetic ink. Background Technology

[0002] Magnetic ink anti-counterfeiting technology with magnetic strips has been widely used on banknotes of various countries, such as Euro banknotes and Renminbi banknotes. The visual features on these banknotes are anti-counterfeiting visual features produced by a single layer of magnetic ink.

[0003] Chinese utility model patent CN111776471B [A Color-Changing Anti-counterfeiting Structure, Anti-counterfeiting Plastic Seal, and Preparation Method] describes a color-changing structure consisting of two layers of magnetic ink stacked together. The directional magnetic fields of the magnetic sheets in the two layers of magnetic ink are both parallel magnetic fields, and the positioning angles of the two parallel magnetic fields are different. When observed from different angles, the color-changing structure presents an overall color-changing effect. This anti-counterfeiting technology has been adopted by Feitian Moutai, a top Chinese liquor brand, on its plastic caps.

[0004] The aforementioned anti-counterfeiting visual features have fewer ink layers, making them easier to counterfeit, and the visual features they can present are also very high priority, making them easy to imitate. Utility Model Content

[0005] The purpose of this invention is to enhance the anti-counterfeiting difficulty and increase the composite effect and visual features of the pattern based on the existing technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-layer anti-counterfeiting structure includes a substrate layer 1 and at least three magnetic ink layers, namely a first magnetic ink layer 2, a second magnetic ink layer 3, and a third magnetic ink layer 4. There is an intersection between the patterns of the first magnetic ink layer 2, the second magnetic ink layer 3, and the third magnetic ink layer 4. The first magnetic sheet 21 in the first magnetic ink layer 2 is oriented by a first magnetic field 22, the second magnetic sheet 31 in the second magnetic ink layer 3 is oriented by a second magnetic field 32, and the third magnetic sheet 41 in the third magnetic ink layer 4 is oriented by a third magnetic field 42. The different magnetic field orientations of the first magnetic field 22, the second magnetic field 32, and the third magnetic field 42 cause the composite effect of the first magnetic ink layer 2, the second magnetic ink layer 3, and the third magnetic ink layer 4 to present different visual characteristics when viewed from different angles on the same axis of rotation.

[0008] The first magnetic field 22, the second magnetic field 32, and the third magnetic field 42 are all parallel magnetic fields. In the XYZ coordinate system, the substrate layer 1 is parallel to the XY plane. The first magnetic field 22 is parallel to the XY plane at an angle of α21. The second magnetic field 32 is parallel to the XY plane at an angle of α31. The third magnetic field 42 is parallel to the XY plane at an angle of α41. The difference between the angles α21, α31, and α41 is not less than 5°.

[0009] After the magnetic field directs the magnetic sheet, the arrangement of the magnetic sheet is basically consistent with the direction of the magnetic field. Thus, the human eye can see the interference effect of the magnetic sheet from a specific observation angle. This effect is a colored golden texture. The first magnetic field 22 is parallel or basically perpendicular to the XZ plane. The purpose of this technical feature is that when the ink layer pattern rotates around the Y-axis under natural light, the human eye can see the change effect of the interference pattern. Vertical alignment is optimal, but this change effect can also be achieved with a certain degree of tilt.

[0010] After the parallel magnetic field is oriented, the pattern will either appear or disappear entirely.

[0011] After the non-parallel magnetic field is oriented, the pattern will change, for example, the way rolling interference bars appear.

[0012] The ink layer pattern can be composed of solid ink or dense dots or dense lines. For example, the pattern of the letter "A" can be magnified to observe the details that make up the letter "A". These details are either full-page ink layers, dots, or lines. These details are usually not visible to the naked eye.

[0013] The non-parallel magnetic field is preferably parallel or nearly parallel to the XZ plane, so that when the ink layer pattern rotates around the X-axis, the human eye can more clearly see the change in the interference pattern.

[0014] If the substrate layer is transparent, it can be placed on top of any magnetic ink layer, such as a transparent film. If it is opaque paper, it can only be placed at the bottom layer.

[0015] The difference between angles α21, α31 and α41 is at least 5°, so as to ensure that the positioning directions of magnetic field 22, second magnetic field 32 and third magnetic field 42 are different, so that the first magnetic ink layer 2, second magnetic ink layer 3 and third magnetic ink layer 4 present different visual characteristics from different visual observation angles.

[0016] Furthermore, it is preferred that α21 is 160°~180°, α31 is 140°~165°, and α41 is 10°~40°.

[0017] For anti-counterfeiting structures containing two layers of magnetic ink with parallel magnetic field orientation, the angle between the magnetic field and the XY plane should preferably be the angle mentioned above.

[0018] A multi-layer anti-counterfeiting structure includes a substrate layer 1 and at least four magnetic ink layers, namely a first magnetic ink layer 2, a second magnetic ink layer 3, a third magnetic ink layer 4, and a fourth magnetic ink layer 5. The patterns of the first magnetic ink layer 2, the second magnetic ink layer 3, the third magnetic ink layer 4, and the fourth magnetic ink layer 5 overlap. In the first magnetic ink layer 2, a first magnetic sheet 21 is oriented by a first magnetic field 22; in the second magnetic ink layer 3, a second magnetic sheet 31 is oriented by a second magnetic field 32; in the third magnetic ink layer 4, a third magnetic sheet 41 is oriented by a third magnetic field 42; and in the fourth magnetic ink layer 5, a fourth magnetic sheet 51 is oriented by a fourth magnetic field 52. The first magnetic field 22, the second magnetic field 32, the third magnetic field 42, and the fourth magnetic field 52 are parallel magnetic fields. In the XYZ coordinate system, the substrate layer 1 is parallel to the XY plane. The first magnetic field 22 is parallel to the XY plane at an angle of α21. The second magnetic field 32 is parallel to the XY plane at an angle of α31. The third magnetic field 42 is parallel to the XY plane at an angle of α41. The fourth magnetic field 52 is parallel to the XY plane at an angle of α51. The difference between the angles α21, α31, α21, and α31 is not less than 5°.

[0019] The anti-counterfeiting structure can also be set with three layers of magnetic ink with parallel magnetic field orientation, which further increases the difficulty of anti-counterfeiting and allows for the design of more expressive scene-changing structures.

[0020] Furthermore, it is preferred that α21 is 160°~180°, α31 is 140°~170°, α41 is 5°~20°, and α51 is 15°~45°.

[0021] Through theoretical calculations and experimental verification, the above-mentioned angular distribution can correspond to distinct visual changes.

[0022] Through theoretical calculations and experimental verification, it has been found that when three parallel magnetic field orientation angles are set simultaneously in the scene-changing structure, the above-mentioned angle distribution can correspond to distinct visual changes.

[0023] In the aforementioned anti-counterfeiting structure, at least one layer of magnetic ink has a magnetic sheet whose directional magnetic field is a non-parallel magnetic field, or a fifth magnetic ink layer 6 is added. The pattern of the fifth magnetic ink layer 6 intersects with the patterns of the other magnetic ink layers. The fifth magnetic sheet 61 in the fifth magnetic ink layer 6 is oriented by a fifth magnetic field 62, which is a non-parallel magnetic field.

[0024] The aforementioned multi-layer anti-counterfeiting structure has a magnetic ink layer on the top layer with lower transparency than the magnetic ink layer on the bottom layer. The purpose of this technical requirement is to prevent the upper magnetic ink layer from obscuring the lower magnetic ink layer, thereby facilitating the implementation of the multi-layer anti-counterfeiting structure.

[0025] The aforementioned multi-layer anti-counterfeiting structure has an area of ​​magnetic ink layer arranged on the top layer that is larger than the area of ​​magnetic ink layer arranged on the bottom layer, and the pattern of magnetic ink layer arranged on the top layer completely covers the pattern of magnetic ink layer arranged on the bottom layer.

[0026] Furthermore, at least one of the magnetic ink layer patterns is selected to be composed of halftone lines or halftone dots.

[0027] These dots or cables are usually not visible to the naked eye (observation distance of 20cm).

[0028] The reason for choosing a dot pattern or a halftone pattern is to reduce the occlusion effect between magnetic ink layers, so that the visual characteristics of each magnetic ink layer can be easily and clearly presented when viewed from different angles.

[0029] Furthermore, in the selected intersection area, the magnetic ink layer A pattern is a full-page pattern A1, the magnetic ink layer B pattern is composed of halftone lines B2 or halftone dots B3, and the magnetic ink layer B pattern is located above the magnetic ink layer A pattern.

[0030] Magnetic ink layer A or magnetic ink layer B can be any of the ink layers, and the two layers can be stacked without precise alignment during printing.

[0031] Furthermore, in the selected intersection region, the pattern of magnetic ink layer A is composed of mesh lines A2, the pattern of magnetic ink layer B is composed of mesh lines B2, the pattern of magnetic ink layer B is located above the pattern of magnetic ink layer A, and mesh lines A2 and B2 intersect.

[0032] Magnetic ink layer A or magnetic ink layer B can be any of the ink layers, and the two layers can be stacked without precise alignment during printing.

[0033] Furthermore, in the selected intersection area, the pattern of magnetic ink layer A is composed of halftone lines A2, and the pattern of magnetic ink layer B is composed of halftone lines B2, with halftone lines A2 and B2 arranged parallel and staggered; or in the selected intersection area, the pattern of magnetic ink layer A is composed of halftone dots A3, and the pattern of magnetic ink layer B is composed of halftone dots B3, with halftone dots A3 and B3 arranged staggered.

[0034] The two-layer stacking method is staggered, requiring aligned printing, which saves ink. It not only eliminates the obstruction effect between ink layers but also reduces the overall ink layer thickness.

[0035] Furthermore, it includes at least three magnetic ink layers. In the intersection area, the pattern of magnetic ink layer A is a full-page pattern A1, the pattern of magnetic ink layer B is composed of halftone lines B2 and is located above the pattern of magnetic ink layer A, the pattern of magnetic ink layer C is composed of halftone lines C2 and is located above the pattern of magnetic ink layer B, and the halftone lines B2 and C2 are arranged intersectingly, or the halftone lines B2 and C2 are arranged parallel and staggered.

[0036] Furthermore, it includes at least three magnetic ink layers. In the intersection area, the pattern of magnetic ink layer A is a full-page pattern A1, the pattern of magnetic ink layer B is composed of halftone dots B3 and is located above the pattern of magnetic ink layer A, and the pattern of magnetic ink layer C is composed of halftone dots C3 and is located above the pattern of magnetic ink layer A. Halftone dots B3 and halftone dots C3 are arranged in a staggered manner.

[0037] The three-layer overlay method requires precise alignment for two of the printing layers, but it can reduce the overall ink layer thickness.

[0038] Compared with the prior art, the beneficial effects of this utility model are:

[0039] The effect of this invention is to increase the anti-counterfeiting difficulty on the basis of the original scene-changing structure, and to increase the variation effect and visual features of the composite pattern. These variation effects and visual features are impossible to achieve with the original technology. Attached Figure Description

[0040] Figure 1 : These are cross-sectional views of the three-layer magnetic ink structure of a parallel magnetic field oriented magnetic sheet;

[0041] Figure 2 : These are cross-sectional views of a four-layer magnetic ink structure of a parallel magnetic field oriented magnetic sheet;

[0042] Figure 3-1 Cross-sectional view of a three-layer magnetic ink structure containing a non-parallel magnetic field oriented magnetic sheet;

[0043] Figure 3-2 Cross-sectional view of a four-layer magnetic ink structure containing a non-parallel magnetic field oriented magnetic sheet;

[0044] Figure 3-3 Cross-sectional view of a five-layer magnetic ink structure containing a non-parallel magnetic field oriented magnetic sheet;

[0045] Figure 4-1 : A magnified planar view of a magnetic ink layer with a dotted structure;

[0046] Figure 4-2 : A magnified plan view of a magnetic ink layer with a mesh structure;

[0047] Figure 4-3 : A magnified plan view of a magnetic ink layer with a random cross-structure of two mesh lines;

[0048] Figure 4-4 : A magnified plan view of a magnetic ink layer with parallel and staggered halftone lines;

[0049] Figure 4-5 : A magnified plan view of the magnetic ink layer with a two-layer dot misalignment structure;

[0050] Figure 4-6 : A magnified plan view of a three-layer magnetic ink layer containing a two-layer random cross-structured mesh;

[0051] Figure 4-7 : A magnified plan view of a three-layer magnetic ink layer containing two layers of parallel and staggered halftone lines;

[0052] Figure 4-8 : A planar enlarged view of a three-layer magnetic ink layer containing a two-layer dot misalignment structure.

[0053] In the diagram: 1. Substrate layer; 2. First magnetic ink layer; 3. Second magnetic ink; 4. Third magnetic ink layer; 5. Fourth magnetic ink layer; 6. Fifth magnetic ink layer; 21. First magnetic sheet; 22. First magnetic field; 31. Second magnetic sheet; 32. Second magnetic field; 41. Third magnetic sheet; 42. Third magnetic field; 51. Fourth magnetic sheet; 52. Fourth magnetic field; 61. Fifth magnetic sheet; 62. Fifth magnetic field; Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0055] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0056] Example 1

[0057] Figure 1The diagram illustrates a multi-layer anti-counterfeiting structure containing three layers of magnetic ink. The structure includes a substrate layer 1, a first magnetic ink layer 2, a second magnetic ink layer 3, and a third magnetic ink layer 4. The patterns in the first magnetic ink layer 2, the second magnetic ink layer 3, and the third magnetic ink layer 4 intersect. In the first magnetic ink layer 2, the first magnetic piece 21 is oriented by a first magnetic field 22; in the second magnetic ink layer 3, the second magnetic piece 31 is oriented by a second magnetic field 32; and in the third magnetic ink layer 4, the third magnetic piece 41 is oriented by a third magnetic field 42. The first magnetic field 22, the second magnetic field 32, and the third magnetic field 42 are all parallel magnetic fields in the XYZ coordinate system. The substrate layer 1 is parallel to the XY plane. The angle between the first magnetic field 22 and the XY plane is α21, which is 160°~180°. The first magnetic field 22 is parallel to the XZ plane. The angle between the second magnetic field 32 and the XY plane is α31, which is 140°~165°. The second magnetic field 32 is parallel to the XZ plane. The angle between the third magnetic field 42 and the XY plane is α41, which is 10°~40°. The third magnetic field 42 is parallel to the XZ plane. The orientation of the first magnetic field 22, the second magnetic field 32 and the third magnetic field 42 causes the first magnetic ink layer 2, the second magnetic ink layer 3 and the third magnetic ink layer 4 to exhibit different visual characteristics when viewed by rotating along the Y-axis.

[0058] The selection of magnetic ink colors is very wide. They can be matched according to aesthetics and other needs. The most transparent magnetic ink layer is placed on top, and the bottom layer is a transparent magnetic ink layer.

[0059] In this embodiment, the three-layer magnetic ink pattern is a solid structure, but it can also be selected to contain... Figure 4-1 , Figure 4-2 , Figure 4-3 , Figure 4-4 , Figure 4-5 , Figure 4-6 , Figure 4-7 , Figure 4-8 The network cable dot structure.

[0060] Example 2

[0061] Figure 2The diagram illustrates a variable-magnetic-ink anti-counterfeiting structure comprising four magnetic ink layers, including a substrate layer 1, a first magnetic ink layer 2, a second magnetic ink layer 3, a third magnetic ink layer 4, and a fourth magnetic ink layer 5. The patterns of the first magnetic ink layer 2, the second magnetic ink layer 3, the third magnetic ink layer 4, and the fourth magnetic ink layer 5 intersect. In the first magnetic ink layer 2, magnetic sheet 21 is oriented by magnetic field 22; in the second magnetic ink layer 3, second magnetic sheet 31 is oriented by second magnetic field 32; in the third magnetic ink layer 4, third magnetic sheet 41 is oriented by third magnetic field 42; and in the fourth magnetic ink layer 5, fourth magnetic sheet 51 is oriented by fourth magnetic field 52. The first magnetic field 22, the second magnetic field 32, the third magnetic field 42, and the fourth magnetic field 52 are parallel magnetic fields. In the XYZ coordinate system, the substrate... Material layer 1 is parallel to the XY plane. The angle α21 between the first magnetic field 22 and the XY plane is 160°~180° and the first magnetic field 22 is parallel to the XZ plane. The angle α31 between the second magnetic field 32 and the XY plane is 140°~170° and the second magnetic field 32 is parallel to the XZ plane. The angle α41 between the third magnetic field 42 and the XY plane is 5°~20° and the third magnetic field 42 is parallel to the XZ plane. The angle α51 between the fourth magnetic field 52 and the XY plane is 15°~45° and the fourth magnetic field 52 is parallel to the XZ plane. The orientation of the first magnetic field 22, the second magnetic field 32, the third magnetic field 42 and the fourth magnetic field 52 causes the first magnetic ink layer 2, the second magnetic ink layer 3 and the third magnetic ink layer 4 to exhibit different visual characteristics when viewed by rotating along the Y-axis.

[0062] The selection of magnetic ink colors is very wide. They can be matched according to aesthetics and other needs. The most transparent magnetic ink layer is placed on top, and the bottom layer is a transparent magnetic ink layer.

[0063] In this embodiment, the pattern of the four magnetic ink layers is a solid structure, but it can also be selected to contain... Figure 4-1 , Figure 4-2 , Figure 4-3 , Figure 4-4 , Figure 4-5 , Figure 4-6 , Figure 4-7 , Figure 4-8 The network cable dot structure.

[0064] Example 3

[0065] Figure 3-1The three-layer anti-counterfeiting structure shown includes a substrate layer 1, a first magnetic ink layer 2, a second magnetic ink layer 3, and a third magnetic ink layer 4. The patterns of the first magnetic ink layer 2, the second magnetic ink layer 3, and the third magnetic ink layer 4 intersect. In the first magnetic ink layer 2, the first magnetic sheet 21 is oriented by a first magnetic field 22; in the second magnetic ink layer 3, the second magnetic sheet 31 is oriented by a second magnetic field 32; and in the third magnetic ink layer 4, the third magnetic sheet 41 is oriented by a third magnetic field 42. The first magnetic field 22 and the third magnetic field 42 are parallel magnetic fields. All are non-parallel magnetic fields. In the XYZ coordinate system, the substrate layer 1 is parallel to the XY plane. The angle between the first magnetic field 22 and the XY plane is α21, which is 150°~175°. The first magnetic field 22 is parallel to the XZ plane. The angle between the third magnetic field 42 and the XY plane is α31, which is 10°~40°. The second magnetic field 32 is parallel to the XZ plane. The third magnetic field 42 is parallel to the XZ plane. The magnetic sheet orientation of the first magnetic field 22, the second magnetic field 32 and the third magnetic field 42 makes the first magnetic ink layer 2, the second magnetic ink layer 3 and the third magnetic ink layer 4 exhibit different visual characteristics when viewed by rotating along the Y-axis.

[0066] Figure 3-1 The visual effect of the medium magnetic ink layer 3 is the visual characteristic of a scroll bar.

[0067] Example 4

[0068] Figure 3-2 The structure shown is from embodiment 1. Figure 1 The structure shown has an additional fifth magnetic ink layer 6 oriented by a non-parallel fifth magnetic field 62. The pattern of the fifth magnetic ink layer 6 intersects with the patterns of the first magnetic ink layer 2, the second magnetic ink layer 3, and the third magnetic ink layer 4. In the XYZ coordinate system, the magnetic field 62 is parallel to the XZ plane.

[0069] Example 5

[0070] Figure 3-3 The structure shown is in embodiment 2. Figure 2 The structure shown has an additional fifth magnetic ink layer 6 oriented by a non-parallel magnetic field 62. The pattern of the fifth magnetic ink layer 6 intersects with the patterns of the first magnetic ink layer 2, the second magnetic ink layer 3, the third magnetic ink layer 4, and the fourth magnetic ink layer 5. In the XYZ coordinate system, the magnetic field 62 is parallel to the XZ plane.

Claims

1. A multi-layer anti-counterfeiting structure, comprising a substrate layer (1), at least three magnetic ink layers, namely a first magnetic ink layer (2), a second magnetic ink layer (3), and a third magnetic ink layer (4), characterized in that, There is an overlapping area between the patterns of the first magnetic ink layer (2), the second magnetic ink layer (3), and the third magnetic ink layer (4). The first magnetic sheet (21) in the first magnetic ink layer (2) is oriented by the first magnetic field (22), the second magnetic sheet (31) in the second magnetic ink layer (3) is oriented by the second magnetic field (32), and the third magnetic sheet (41) in the third magnetic ink layer (4) is oriented by the third magnetic field (42). The different magnetic field orientations of the first magnetic field (22), the second magnetic field (32), and the third magnetic field (42) make the composite effect of the first magnetic ink layer (2), the second magnetic ink layer (3), and the third magnetic ink layer (4) appear to have different visual characteristics when viewed from different angles on the same axis of rotation.

2. The multi-layered anti-counterfeiting structure according to claim 1, characterized in that, The first magnetic field (22), the second magnetic field (32), and the third magnetic field (42) are all parallel magnetic fields. In the XYZ coordinate system, the substrate layer (1) is parallel to the XY plane, and the angle between the first magnetic field (22) and the XY plane is α. 21 The first magnetic field (22) is parallel to the XZ plane, and the second magnetic field (32) makes an angle α with the XY plane. 31 The second magnetic field (32) is parallel to the XZ plane, and the third magnetic field (42) makes an angle α with the XY plane. 41 The third magnetic field (42) is parallel to the XZ plane, and the α 21 α is 160°~180° 31 140°~165°, α 41 The range is 10° to 40°.

3. A multi-layered anti-counterfeiting structure, characterized in that, The system includes a substrate layer (1) and at least four magnetic ink layers, namely a first magnetic ink layer (2), a second magnetic ink layer (3), a third magnetic ink layer (4), and a fourth magnetic ink layer (5). There are overlapping areas between the patterns of the first magnetic ink layer (2), the second magnetic ink layer (3), the third magnetic ink layer (4), and the fourth magnetic ink layer (5). In the first magnetic ink layer (2), the first magnetic sheet (21) is oriented by a first magnetic field (22); in the second magnetic ink layer (3), the second magnetic sheet (31) is oriented by a second magnetic field (32); in the third magnetic ink layer (4), the third magnetic sheet (41) is oriented by a third magnetic field (42); and in the fourth magnetic ink layer (5), the fourth magnetic sheet (51) is oriented by a fourth magnetic field (52). The first magnetic field (22), the second magnetic ink layer (3), the third magnetic ink layer (4), and the fourth magnetic ink layer (5) have overlapping areas. The second magnetic field (32), the third magnetic field (42) and the fourth magnetic field (52) are parallel magnetic fields. In the XYZ coordinate system, the substrate layer (1) is parallel to the XY plane, the angle between the first magnetic field (22) and the XY plane is α21, the first magnetic field (22) is parallel to the XZ plane, the angle between the second magnetic field (32) and the XY plane is α31, the second magnetic field (32) is parallel to the XZ plane, the angle between the third magnetic field (42) and the XY plane is α41, the third magnetic field (42) is parallel to the XZ plane, the angle between the fourth magnetic field (52) and the XY plane is α51, the fourth magnetic field (52) is parallel to the XZ plane, α21 is 160°~180°, α31 is 140°~170°, α41 is 5°~20°, and α51 is 15°~45°.

4. A multi-layered anti-counterfeiting structure according to claim 1 or 3, characterized in that, In the aforementioned anti-counterfeiting structure, at least one layer of magnetic ink has a magnetic sheet with a non-parallel magnetic field, or a fifth magnetic ink layer (6) is added. The pattern of the fifth magnetic ink layer (6) intersects with the patterns of the other magnetic ink layers. The fifth magnetic sheet (61) in the fifth magnetic ink layer (6) is oriented by the fifth magnetic field (62), which is a non-parallel magnetic field.

5. A multi-layer anti-counterfeiting structure according to any one of claims 1 to 3, characterized in that, At least one of the magnetic ink layer patterns is composed of halftone lines or halftone dots.

6. A multi-layer anti-counterfeiting structure according to any one of claims 1 to 3, characterized in that, In the intersection area, the magnetic ink layer (A) pattern is a full-page pattern (A1), the magnetic ink layer (B) pattern is composed of halftone lines (B2) or halftone dots (B3), and the magnetic ink layer (B) pattern is located on top of the magnetic ink layer (A) pattern.

7. A multi-layer anti-counterfeiting structure according to any one of claims 1 to 3, characterized in that, In the intersection region, the magnetic ink layer (A) pattern is composed of mesh lines (A2), the magnetic ink layer (B) pattern is composed of mesh lines (B2), the magnetic ink layer (B) pattern is located on top of the magnetic ink layer (A) pattern, and the mesh lines (A2) and (B2) intersect.

8. A multi-layer anti-counterfeiting structure according to any one of claims 1 to 3, characterized in that, In the intersection region, the pattern of magnetic ink layer (A) is composed of halftone dots (A2), and the pattern of magnetic ink layer (B) is composed of halftone dots (B2), with halftone dots (A2) and halftone dots (B2) arranged in parallel and staggered order; or in the intersection region, the pattern of magnetic ink layer (A) is composed of halftone dots (A3), and the pattern of magnetic ink layer (B) is composed of halftone dots (B3), with halftone dots (A3) and halftone dots (B3) arranged in staggered order.

9. A multi-layer anti-counterfeiting structure according to any one of claims 1 to 3, characterized in that, It includes at least three magnetic ink layers. In the intersection area, the magnetic ink layer (A) pattern is a full-page pattern (A1), the magnetic ink layer (B) pattern is composed of halftone lines (B2) and is located on top of the magnetic ink layer (A) pattern, the magnetic ink layer (C) pattern is composed of halftone lines (C2) and is located on top of the magnetic ink layer (B) pattern, the halftone lines (B2) and halftone lines (C2) are arranged in a cross pattern, or the halftone lines (B2) and halftone lines (C2) are arranged in parallel and staggered patterns.

10. A multi-layer anti-counterfeiting structure according to any one of claims 1 to 3, characterized in that, It includes at least three magnetic ink layers. In the intersection area, the magnetic ink layer (A) has a full-page pattern (A1), the magnetic ink layer (B) is composed of halftone dots (B3) and is located above the magnetic ink layer (A), and the magnetic ink layer (C) is composed of halftone dots (C3) and is located above the magnetic ink layer (A). The halftone dots (B3) and halftone dots (C3) are arranged in a staggered manner.

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