Anti-counterfeiting element and anti-counterfeiting product

Abstract

The invention relates to the technical field of anti-counterfeiting, and aims to provide an anti-counterfeiting element and an anti-counterfeiting product. The anti-fake element is a magnetic simulation safety line which has a light color characteristic and an excellent residual magnetism characteristic. The security element comprises: a base material; the base material is provided with at least one group of magnetic codes formed by a first magnetic area and a second magnetic area which are arranged at certain intervals along a preset direction X, and the Dab * value of the magnetic area is 18-50; the first magnetic region and the second magnetic region have the same shape information; when the first magnetic area and the second magnetic area carry out magnetization processing on the anti-fake element in the preset direction X, a magnetic sensor is adopted, and a distinguishing magnetic pulse sequence can be obtained. The problem that in the prior art, a plastic banknote cannot have a magnetic simulation safety line with a light color feature and an excellent residual magnetism feature at the same time is solved.

Description

Technical Field

[0001] This invention relates to the field of anti-counterfeiting technology, specifically to an anti-counterfeiting element and anti-counterfeiting product. Background Technology

[0002] In recent years, with the increasing use of plastic substrates as printing media for banknotes, new demands have been placed on magnetic security threads to achieve both aesthetic appeal and a lighter color while maintaining machine readability. Currently, in the international banknote market, plastic banknotes primarily use two types of magnetic security threads in terms of appearance and machine readability: one is a black magnetic thread, employing full-page magnetic or intaglio / combined intaglio text features. These are made of black iron oxide, resulting in a darker color and a high-intensity magnetic signal, primarily detecting the presence or absence of magnetism, but lacking a customized magnetic encoding sequence. The other type is a light-colored magnetic thread, with a lighter color and a relatively low magnetic signal. Both share a common characteristic: they primarily detect the presence or absence of magnetism, representing a qualitative detection.

[0003] To address the challenge of machine recognition of magnetic simulation security threads on polymer banknotes while maintaining aesthetically pleasing magnetic features, China Banknote Printing and Minting Corporation's patent CN 106778989 B proposes a method of setting multiple magnetic regions with different remanence and spaced intervals within a continuous magnetic area. Using a magnetic sensor, this method can detect the magnetic coding sequence, effectively solving the problem of directly applying discontinuous coding to polymer banknotes. This enables the application of fully embedded magnetic simulation security threads with magnetic coding sequences on polymer substrates. China Banknote Printing and Minting Corporation's patent CN 106599966 B proposes a method where the magnetic code measurement width within a magnetic unit is smaller than the visual width, enabling the detection of magnetic coding sequences within magnetic text or patterns. Both of these methods use traditional black or dark magnetic inks printed on polymer substrates. Currently, there are no precedents for the application of magnetic simulation security threads on polymer banknotes that possess both light-colored characteristics and excellent remanence. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the existing plastic banknotes cannot simultaneously possess light-colored characteristics and excellent remanent magnetic characteristics in magnetic analog security threads, thereby providing an anti-counterfeiting element and anti-counterfeiting product that has both light-colored characteristics and excellent remanent magnetic characteristics in magnetic analog security threads.

[0005] To address the above problems, the present invention provides an anti-counterfeiting element, comprising:

[0006] Substrate;

[0007] The substrate is provided with at least one set of magnetic codes consisting of a first magnetic region and a second magnetic region arranged at certain intervals along a preset direction X, wherein the Dab* value of the magnetic region is 18-50; the first magnetic region and the second magnetic region have the same shape information; when the first magnetic region and the second magnetic region magnetize the anti-counterfeiting element along the preset direction X, a magnetic sensor is used to obtain a distinguishing magnetic pulse sequence.

[0008] Optionally, when the first magnetic region and / or the second magnetic region magnetize the anti-counterfeiting element along the preset direction X, a magnetic sensor is used to obtain a characteristic magnetic pulse sequence that is different from the shape information.

[0009] Optionally, the distinguishing magnetic pulse sequence includes width and / or amplitude and / or phase.

[0010] Optionally, the magnetic region may include magnetic character elements.

[0011] Optionally, the magnetic region may include magnetic patterned elements.

[0012] Optionally, the magnetic region may include magnetic marking elements.

[0013] Optionally, the magnetic anti-counterfeiting element is designed in a straight line and / or a curved line along the printing direction.

[0014] Optionally, the magnetic area along the printing direction includes positive magnetic character elements and / or magnetic pattern elements and / or magnetic sign elements.

[0015] Optionally, the magnetic area along the printing direction includes negative magnetic character elements and / or magnetic pattern elements and / or magnetic sign elements.

[0016] Optionally, the magnetic area along the printing direction includes magnetic character elements and / or magnetic pattern elements and / or magnetic sign elements that combine positive and negative lettering.

[0017] Optionally, the anti-counterfeiting element has a continuous magnetic region made of a magnetic material along the printing direction.

[0018] Optionally, the magnetic area is printed with magnetic ink containing magnetic particles with an infrared reflectivity of 50% or more.

[0019] Optionally, the remanence of the magnetic region is between 50 nWb / m and 700 nWb / m.

[0020] Optionally, the width of the magnetic region is greater than or equal to 1 mm and less than or equal to 80 mm; and / or the length of the magnetic coding region is greater than or equal to 1 mm and less than or equal to 200 mm.

[0021] Optionally, the magnetic region is composed of hard magnetic material and / or soft magnetic material.

[0022] Optionally, the magnetic region is made of one of the following materials: a magnetic material or a magnetically conductive material.

[0023] Optionally, the substrate is paper or film.

[0024] An anti-counterfeiting product, comprising the aforementioned anti-counterfeiting element.

[0025] The present invention has the following advantages:

[0026] 1. The anti-counterfeiting element provided by this invention includes a substrate. At least one set of magnetic codes, consisting of first and second magnetic regions arranged at certain intervals along a preset direction X, is provided on the substrate. The Dab* value of the magnetic regions is 18-50, meaning the first and second magnetic regions have light-colored characteristics. Furthermore, the first and second magnetic regions have the same shape information, i.e., they have the same appearance shape. When the first and second magnetic regions magnetize the anti-counterfeiting element along the preset direction X, a magnetic sensor can be used to obtain a distinguishing magnetic pulse sequence. Anti-counterfeiting identification can be performed by distinguishing the magnetic pulse sequences. This anti-counterfeiting element has both light-colored characteristics and excellent remanent magnetization, resulting in good anti-counterfeiting performance.

[0027] 2. The anti-counterfeiting element provided by the present invention distinguishes magnetic pulse sequences by width and / or amplitude and / or phase, and has multiple anti-counterfeiting identification methods, making it more widely applicable.

[0028] 3. The anti-counterfeiting element provided by the present invention has a magnetic area consisting of magnetic character elements and / or magnetic pattern elements and / or magnetic mark elements. The magnetic character elements and / or magnetic pattern elements and / or magnetic mark elements can be positive or negative characters or a combination of positive and negative characters. Therefore, the anti-counterfeiting element has a variety of different appearances and a wider range of applications.

[0029] 4. The anti-counterfeiting product provided by the present invention uses anti-counterfeiting elements for anti-counterfeiting. Since the anti-counterfeiting elements use light-colored magnetic areas, they are more aesthetically pleasing, and during inspection, anti-counterfeiting identification can be performed by distinguishing magnetic pulse sequences formed by the magnetic areas, resulting in a better anti-counterfeiting effect. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of an embodiment of the anti-counterfeiting element of the present invention;

[0032] Figure 2 This is a top view of one set of magnetic regions in one embodiment of the anti-counterfeiting element of the present invention;

[0033] Figure 3 This is a cross-sectional view of one set of magnetic regions in one embodiment of the anti-counterfeiting element of the present invention;

[0034] Figure 4 This is a magnetic pulse sequence diagram illustrating the differences in magnetic regions among a set of magnetic areas in Embodiment 1 of the anti-counterfeiting element of the present invention;

[0035] Figure 5 This is a cross-sectional view of one set of magnetic regions in Embodiment 2 of the anti-counterfeiting element of the present invention;

[0036] Figure 6 This is a magnetic pulse sequence diagram illustrating the differences in magnetic regions among a set of magnetic areas in Embodiment 2 of the anti-counterfeiting element of the present invention;

[0037] Figure 7 This is a cross-sectional view of one set of magnetic regions in Embodiment 3 of the anti-counterfeiting element of the present invention;

[0038] Figure 8 This is a magnetic pulse sequence diagram illustrating the differences in magnetic regions among a set of magnetic areas in Embodiment 3 of the anti-counterfeiting element of the present invention;

[0039] Figure 9 This is a cross-sectional view of one set of magnetic regions in Embodiment 4 of the anti-counterfeiting element of the present invention;

[0040] Figure 10 This is a magnetic pulse sequence diagram illustrating the differences in magnetic regions among a set of magnetic areas in Embodiment 4 of the anti-counterfeiting element of the present invention;

[0041] Figure 11 This is a cross-sectional view of one set of magnetic regions in Embodiment 5 of the anti-counterfeiting element of the present invention;

[0042] Figure 12 This is a magnetic pulse sequence diagram illustrating the differences in magnetic regions among a set of magnetic areas in Embodiment 5 of the anti-counterfeiting element of the present invention;

[0043] Figure 13 This is a schematic diagram of Embodiment Six of the anti-counterfeiting element of the present invention;

[0044] Figure 14 This is a schematic diagram of Embodiment Seven of the Anti-counterfeiting Element of the present invention.

[0045] Explanation of reference numerals in the attached figures:

[0046] 1. Substrate;

[0047] 2. Magnetic coding: 201, first magnetic region; 202, second magnetic region;

[0048] 3. Basal layer;

[0049] 4. Covering layer;

[0050] 5. Conductive layer. Detailed Implementation

[0051] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0055] The innovation of this invention lies in using magnetic ink made of magnetic material with high infrared reflectivity. Through gravure printing, a light-colored printed appearance with a low Dab* value (18-50) is achieved on the substrate. Furthermore, the first and second magnetic regions with identical shape information are combined to achieve a magnetic coding feature with a distinguishable magnetic pulse sequence obtained by a magnetic sensor when the anti-counterfeiting element is magnetized along a predetermined direction X. This realizes the innovation and application of a novel magnetic anti-counterfeiting element that simultaneously possesses light-colored features and unique magnetic machine-readable coding features. The challenge lies in solving the problem of appearance consistency between the first and second magnetic regions. Compared to dark magnetic ink, printed products with light-colored magnetic ink have higher reflectivity and lower opacity. Since ensuring appearance consistency is key to achieving the concealment of the magnetic code, solving the appearance consistency problem of light-colored magnetic prints in this invention is an important creative process. Under the premise of meeting quality requirements such as appearance consistency, magnetic code recognition, and mass production stability, a special gravure printing plate-making process was designed. After conducting multiple experiments, the parameter range that meets the requirements of concealment, machine readability, and process stability for mass production was explored. With the help of special process treatment, the boundary quality problem of the first and second magnetic regions was solved, thereby achieving continuous magnetic regions and magnetic signal strength, and meeting other product quality requirements.

[0056] Example 1

[0057] like Figure 1 As shown, this is a preferred embodiment of the anti-counterfeiting element of the present invention. This anti-counterfeiting element uses a light-colored magnetic thread and performs anti-counterfeiting detection by distinguishing magnetic pulse sequences. The machine reading effect is obvious and the anti-counterfeiting effect is good.

[0058] The aforementioned anti-counterfeiting element includes: a substrate 1. The substrate 1 is paper or a transparent medium film, generally formed from a film material with good physical and chemical resistance and high mechanical strength. For example, it can be a polyethylene terephthalate (PET) film, a polyethylene naphthalate (PEN) film, or a polypropylene (PP) film, etc. In this embodiment, the substrate 1 is preferably a biaxially oriented polypropylene (BOPP) film. The substrate 1 includes an upper surface and a lower surface that are opposite to each other. The upper surface of the substrate 1 is provided with at least one set of magnetic codes 2 consisting of a first magnetic region 201 and a second magnetic region 202 arranged at certain intervals along a predetermined direction X. The first magnetic region 201 and the second magnetic region 202 have the same shape information, that is, when observed with the naked eye, the first magnetic region 201 and the second magnetic region 202 have the same appearance shape, thereby improving the concealment of the magnetic region and preventing it from being easily deciphered. The Dab* values ​​of the first magnetic region 201 and the second magnetic region 202 are 18-50. The Dab* value is a color depth representation value calculated using the Berns color depth formula, based on the characteristics of magnetically simulated security thread printing. A larger Dab* value indicates greater color depth and higher blackness; conversely, a smaller Dab* value indicates less color depth, lower blackness, and lighter color. In this embodiment, the Dab* values ​​of the first magnetic region 201 and the second magnetic region 202 are 18-50, meaning the magnetic regions have a light color characteristic. When the first magnetic region 201 and the second magnetic region 202 are magnetized, the magnetic sensor detects the first magnetic region 201 and the second magnetic region 202 along a preset direction X to obtain distinguishable magnetic pulse sequences. Furthermore, when detected along the preset direction X, the first magnetic region 201 can obtain a characteristic magnetic pulse sequence different from its own shape information, while the second magnetic region 202 has the same magnetic pulse sequence as its own shape information. The preset direction X is... Figure 2 The direction is shown from left to right.

[0059] Furthermore, in this embodiment, the substrate 1 is linear, and the substrate 1 is provided with multiple sets of magnetic codes 2, with the spacing between two adjacent magnetic regions being equal, i.e., from... Figure 1 As you can see, the spacing between each magnetic region is equal.

[0060] The first magnetic region 201 and the second magnetic region 202 are magnetic character elements and / or magnetic pattern elements and / or magnetic logo elements. That is, the appearance of the first magnetic region 201 and the second magnetic region 202 can be magnetic character elements, such as text or letters, or magnetic pattern elements, such as the Temple of Heaven, flowers, or human portraits, or magnetic logo elements, such as factory logos or association logos, or any combination of two or three.

[0061] Furthermore, the magnetic character elements and / or magnetic pattern elements and / or magnetic sign elements are either positive or negative, or a combination of both. For example... Figure 2 As shown, in this embodiment, the first magnetic region 201 and the second magnetic region 202 are preferably magnetic character elements "S", and are in relief.

[0062] In other embodiments, the first magnetic region 201 and the second magnetic region 202 may also be negative text, or one of them may be positive text and the other negative text.

[0063] The first magnetic region 201 and the second magnetic region 202 have the same external dimensions, with a width of [1, 80] mm and an overall length of [1, 200] mm for the magnetic code 2. The first magnetic region 201 and the second magnetic region 202 are made of magnetic materials or magnetically conductive materials with hard magnetic characteristics and / or soft magnetic characteristics. Specifically, the first magnetic region 201 and the second magnetic region 202 are printed with magnetic ink containing magnetic particles with an infrared reflectivity greater than or equal to 50%. The magnetic properties of the magnetic particles originate from iron oxides such as Fe3O4, barium ferrite, strontium ferrite, AlNiCo alloy, magnetically conductive ink, or any other substance with hard magnetic characteristics and / or soft magnetic characteristics. The high infrared reflectivity originates from the presence of a surface reflective layer, which can be a coating material with high reflectivity such as copper, nickel, gold, silver, aluminum, chromium, platinum, etc., or a composite coating of titanium dioxide and silver with high reflectivity. The remanence of the first magnetic region 201 and the second magnetic region 202 is 50 nWb / m to 700 nWb / m.

[0064] When the first magnetic region 201 and the second magnetic region 202 are magnetized, the magnetic sensor can detect the first magnetic region 201 and the second magnetic region 202 along the preset direction X to obtain a distinguishing magnetic pulse sequence, which includes: width and / or amplitude and / or phase.

[0065] In this embodiment, as Figure 3 As shown, the first magnetic region 201 consists of two different regions, 1a and 1b, which are seamlessly connected and will not misalign. The two regions can be applied by different gravure processes to achieve different magnetic coating amounts. The second magnetic region 202 includes a uniform region 2a, and region 2a has the same magnetic coating amount as magnetic region 1a.

[0066] like Figure 4 The image shown is a waveform diagram of the magnetic pulse sequence, specifically the magnetic induction electromotive force formed by the first magnetic region 201 and the second magnetic region 202, in this embodiment. Figure 4It can be seen that the beginning of region 1a is a trough position with an amplitude of approximately -A, and the end of region 1a, which is the boundary between region 1a and region 1b, is a peak position with an amplitude of A. This is because regions 1a and 1b have different magnetic induction intensities, thus creating a change in magnetic induced electromotive force at this position. In the second magnetic region 202, i.e., the beginning of region 2a, the amplitude of the electromotive force is approximately -A, and the amplitude of the magnetic induced electromotive force formed at the end of region 2a is A. The effective pulse width is the width between the peak and the trough. The effective pulse width of the first magnetic region 201 is 1a, and the effective pulse width of the second magnetic region 202 is 2a. From the pulse width, 1a < 2a. Therefore, it can be concluded that the characteristic of the distinguishing magnetic pulse sequences formed by the first magnetic region 201 and the second magnetic region 202 lies in the pulse width. A magnetic detector can detect this difference in pulse width, thereby achieving the purpose of anti-counterfeiting identification.

[0067] In addition, the anti-counterfeiting element also includes a base layer 3 disposed between the upper surface of the substrate 1 and the magnetic area. The base layer 3 is a uniformly coated or printed area, mainly used to improve the surface tension and printability of the substrate 1.

[0068] Furthermore, the anti-counterfeiting element also includes a cover layer 4 disposed above the magnetic area and a conductive layer 5 disposed below the substrate 1. The cover layer 4 and the conductive layer 5 can improve the surface resistivity and printability of the anti-counterfeiting element. The cover layer 4 can be formed using titanium dioxide or the like, and the conductive layer 5 can be formed using ink made with conductive pigments or the like.

[0069] The anti-counterfeiting elements provided in this embodiment can be used to make security lines, stripes, labels, and markings, and can also be adhered to various items through various adhesive mechanisms, such as transferring them to high-security products and high-value-added products like banknotes and credit cards.

[0070] This embodiment also provides an anti-counterfeiting product, including the aforementioned anti-counterfeiting elements. The anti-counterfeiting product includes, but is not limited to, banknotes, bank drafts, tickets, certificates, documents, or credit cards. After applying the aforementioned anti-counterfeiting elements to the anti-counterfeiting product, the elements are light-colored, aesthetically pleasing, and visually identical in shape to the first magnetic region 201 and the second magnetic region 202, providing high concealment and making them difficult to decipher. When the magnetic regions are detected by a magnetic detector, anti-counterfeiting identification can be performed by distinguishing magnetic pulse sequences, resulting in good anti-counterfeiting effectiveness.

[0071] Example 2

[0072] like Figure 5As shown, the difference between this embodiment and Embodiment 1 is that the first magnetic region 201 includes two regions, 1a and 1b, and the second magnetic region 202 includes two regions, 2a and 2b. Regions 1a and 1b are seamlessly connected without misalignment. The two regions can be applied using different gravure processes to achieve different magnetic coating amounts. Similarly, regions 2a and 2b are also seamlessly connected without misalignment. The two regions can be applied using different gravure processes to achieve different magnetic coating amounts. Furthermore, the first magnetic region 201 and the second magnetic region 202 are mirror images of each other. Regions 1a and 2b have the same width and the same magnetic coating amount, as do regions 1b and 2a. Detection is performed along a preset direction X. The first magnetic region 201 has the same magnetic pulse sequence as its own shape information, while the second magnetic region 202 has a characteristic magnetic pulse sequence different from its own shape information.

[0073] like Figure 6 The figure shows the waveform of the magnetic induced electromotive force formed by the first magnetic region 201 and the second magnetic region 202, corresponding to the magnetic pulse sequence diagram in this embodiment. As can be seen from the figure, the beginning of region 1a is a trough position with an amplitude approximately -A, and the end of region 1a, i.e., the boundary between region 1a and region 1b, is a peak position with an amplitude of A. This is because regions 1a and 1b have different magnetic induction intensities, thus creating a change in magnetic induced electromotive force at this position. Correspondingly, the boundary between region 2a and region 2b is a peak position with an amplitude of A. Because regions 2a and 2b have different magnetic induction intensities, a change in magnetic induced electromotive force is created at this position. The end of region 2b is a trough position with an amplitude approximately -A. The effective pulse width of the first magnetic region 201 is 1a, and the effective pulse width of the second magnetic region 202 is 2b. Although the pulse widths of the first magnetic region 201 and the second magnetic region 202 are the same, the pulse phases of the two magnetic regions are different within the effective pulse width. The effective pulse of the first magnetic region 201 is a cosine wave with a negative phase; the effective pulse of the second magnetic region 202 is a sine wave with a positive phase. Therefore, it can be concluded that the distinguishing feature of the magnetic pulse sequences formed by the first magnetic region 201 and the second magnetic region 202 lies in the pulse phase. This difference in pulse phase can be detected by a magnetic detector, thereby achieving the purpose of anti-counterfeiting identification.

[0074] Example 3

[0075] like Figure 7 As shown, the difference between this embodiment and Embodiment 2 is that the amount of magnetic coating in region 1a and region 2b is different.

[0076] like Figure 8The figure shows the waveform of the magnetic induced electromotive force formed by the first magnetic region 201 and the second magnetic region 202, corresponding to the magnetic pulse sequence diagram of this embodiment. As can be seen from the figure, the beginning of region 1a is a trough position with an amplitude of approximately -A, and the end of region 1a, i.e., the boundary between region 1a and region 1b, is a peak position with an amplitude of A. This is because regions 1a and 1b have different magnetic induction intensities, thus creating a change in magnetic induced electromotive force at this position. Correspondingly, the boundary between region 2a and region 2b is a peak position, but with an amplitude of 2A. This is also due to the different magnetic induction intensities of regions 2a and 2b, resulting in a change in magnetic induced electromotive force at this position. The end of region 2b is a trough position with an amplitude of approximately -2A. This is because the magnetic coating amounts of regions 1a and 2b are different, causing the amplitude in region 2b to be twice that in region 1a. The effective pulse of the first magnetic region 201 is a cosine wave with a negative phase and an amplitude of |A|; the effective pulse of the second magnetic region 202 is a sine wave with a positive phase and an amplitude of |2A|. Therefore, it can be concluded that the distinguishing magnetic pulse sequences formed by the first magnetic region 201 and the second magnetic region 202 are characterized by their pulse phase and pulse amplitude. A magnetic detector can detect the difference in pulse phase and pulse amplitude, thereby achieving the purpose of anti-counterfeiting identification.

[0077] Example 4

[0078] like Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that the amount of magnetic coating in region 2a and magnetic region 1a is different.

[0079] like Figure 10The diagram shows the magnetic pulse sequence diagram corresponding to this embodiment, namely the magnetic induced electromotive force waveform formed by the first magnetic region 201 and the second magnetic region 202. As can be seen from the diagram, region 1a begins at a trough with an amplitude approximately -A, and ends at the boundary between region 1a and region 1b with an amplitude of A. This is because regions 1a and 1b have different magnetic induction intensities, resulting in a change in magnetic induced electromotive force at this location. Region 2a begins at a peak with an amplitude of 2A, and ends at a trough with an amplitude approximately -2A. This is also due to the different magnetic induction intensities of regions 2a and 1a, resulting in a change in magnetic induced electromotive force at this location. Region 2b ends at a trough with an amplitude approximately -2A. This is because the magnetic coating amounts of regions 2a and 1a are different, causing the amplitude in region 2a to be twice that in region 1a. The effective pulse width of the first magnetic region 201 is 1a, and the pulse amplitude is |A|; the effective pulse width of the second magnetic region 202 is 2a, and the pulse amplitude is |2A|. Therefore, it can be concluded that the distinguishing magnetic pulse sequences formed by the first magnetic region 201 and the second magnetic region 202 are characterized by their pulse width and pulse amplitude. Magnetic detectors can detect the differences in pulse width and pulse amplitude, thereby achieving the purpose of anti-counterfeiting identification.

[0080] Furthermore, detection is performed along a preset direction X, and the second magnetic region 202 has a characteristic magnetic pulse sequence that is different from its own shape information.

[0081] Example 5

[0082] like Figure 11 As shown, the difference between this embodiment and Embodiment 1 is that the second magnetic region 202 is completely identical to the first magnetic region 201, and both have characteristic magnetic pulse sequences that are different from their own shape information. The first magnetic region 201 includes region 1a and region 1b, which are seamlessly connected without misalignment. The two regions can be applied using different gravure processes to achieve different magnetic coating amounts. Correspondingly, the second magnetic region 202 includes region 2a and region 2b, which are seamlessly connected without misalignment. The two regions can be applied using different gravure processes to achieve different magnetic coating amounts, 1a = 2a, 1b = 2b, and the magnetic coating amounts of regions 1a and 2a are the same, as are the magnetic coating amounts of regions 1b and 2b.

[0083] like Figure 12The figure shows the magnetic pulse sequence diagram corresponding to this embodiment, namely the waveform diagram of the magnetic induction electromotive force formed by the first magnetic region 201 and the second magnetic region 202. As can be seen from the figure, the waveform diagrams of the first magnetic region 201 and the second magnetic region 202 are exactly the same, with the same effective pulse width, amplitude, and phase. A magnetic detector can detect two identical waveform diagrams, thereby achieving the purpose of anti-counterfeiting identification.

[0084] Example 6

[0085] like Figure 13 As shown, the difference between this embodiment and Embodiment 1 is that the spacing between two adjacent sets of magnetic codes 2 is greater than the spacing between the first magnetic region 201 and the second magnetic region 202 within each set of magnetic codes 2.

[0086] Example 7

[0087] like Figure 14 As shown, the difference between this embodiment and Embodiment Six is ​​that the anti-counterfeiting element is curved rather than straight, which is more artistic and can be matched with other printed graphics and text on the ticket to form a more exquisite and layered ticket design.

[0088] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A magnetic anti-counterfeiting element, characterized in that, The anti-counterfeiting element includes: Substrate (1); The substrate (1) is provided with at least one set of magnetic codes (2) consisting of a first magnetic region (201) and a second magnetic region (202) arranged at certain intervals along a preset direction X, wherein the Dab* value of the magnetic region is 18-50; the first magnetic region (201) and the second magnetic region (202) have the same shape information; when the first magnetic region (201) and the second magnetic region (202) magnetize the anti-counterfeiting element along the preset direction X, a magnetic sensor is used to obtain a distinguishing magnetic pulse sequence.

2. The anti-counterfeiting element according to claim 1, characterized in that, When the first magnetic region (201) and / or the second magnetic region (202) magnetize the anti-counterfeiting element along the preset direction X, a magnetic sensor can be used to obtain a characteristic magnetic pulse sequence that is different from the shape information.

3. The anti-counterfeiting element according to claim 1, characterized in that, The distinguishing magnetic pulse sequences include width and / or amplitude and / or phase.

4. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic area includes magnetic character elements.

5. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic region includes magnetic pattern elements.

6. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic region includes magnetic marker elements.

7. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic anti-counterfeiting element is designed in a straight line and / or a curved line along the printing direction.

8. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic area, along the printing direction, includes positive magnetic character elements and / or magnetic pattern elements and / or magnetic sign elements.

9. The anti-counterfeiting element according to any one of claims 1-8, characterized in that, The magnetic area, along the printing direction, includes negative magnetic character elements and / or magnetic pattern elements and / or magnetic sign elements.

10. The anti-counterfeiting element according to any one of claims 1-8, characterized in that, The magnetic area, along the printing direction, includes magnetic character elements and / or magnetic pattern elements and / or magnetic sign elements that combine positive and negative lettering.

11. The anti-counterfeiting element according to claim 1, characterized in that, The anti-counterfeiting element has a continuous magnetic region made of a magnetic material along the printing direction.

12. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic area is printed with magnetic ink containing magnetic particles with an infrared reflectivity of 50% or higher.

13. The anti-counterfeiting element according to claim 1, characterized in that, The remanence of the magnetic region is between 50 nWb / m and 700 nWb / m.

14. The anti-counterfeiting element according to claim 1, characterized in that, The width of the magnetic region is greater than or equal to 1 mm and less than or equal to 80 mm; and / or the length of the magnetic coding (2) region is greater than or equal to 1 mm and less than or equal to 200 mm.

15. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic region is composed of hard magnetic materials and / or soft magnetic materials.

16. The anti-counterfeiting element according to claim 1, characterized in that, The magnetic region is made of one of the following materials: a magnetic material or a magnetically conductive material.

17. The magnetic anti-counterfeiting element according to claim 1, characterized in that, The substrate (1) is paper or film.

18. An anti-counterfeiting product, characterized in that, Includes the anti-counterfeiting element as described in any one of claims 1-17.

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