JP3814692B2 - Printed matter, authenticity determination method thereof, and authenticity determination device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method of detecting the authenticity of a magnetic print used as a counterfeit prevention measure for valuable printed matter such as banknotes and securities, and performing authenticity determination and ticket type determination, when checking the authenticity. The present invention relates to a printed material capable of not only detecting the presence / absence of magnetism and magnetic distribution but also detecting true / false discrimination for detecting a difference in magnetization due to a vertical magnetic field, a true / false discrimination method, and a true / false discrimination device.
[0002]
[Prior art]
In recent years, techniques for preventing counterfeiting of valuable printed materials such as banknotes and securities have been required, and various techniques for checking the authenticity of printed materials have been proposed.
As one of them, paying attention to the fact that a magnetic pattern according to the print design can be obtained when the pigment used in the printing ink has magnetism characteristics, for example, the printed image portion of the printed material is scanned using a magnetic sensor. Then, there is a method of detecting a waveform of presence / absence of magnetism or a magnetic pattern waveform and discriminating a thing that is not similar to a real one as a counterfeit ticket (see, for example, Patent Document 1). For example, banknote processing devices such as vending machines and ATMs are equipped with this magnetic sensor, and perform authenticity determination and ticket type determination based on the magnetic pattern of the obtained banknote and the presence or absence of magnetism. In addition, it has been proposed that the magnetic data given to a predetermined position of the ticket can be accurately taken out, and whether or not the ticket is correct based on the magnetic pattern of the magnetic data is accurately determined (for example, (See Patent Document 2).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 52-152793 [Patent Document 2]
Japanese Patent Laid-Open No. 09-044721
[Problems to be solved by the invention]
However, when looking at counterfeiting of banknotes and securities, there are crimes that use magnetic pencils or produce counterfeit printed material similar to the real thing by magnetic transfer methods that make full use of copying technology. Currently, magnetic sensors used in banknote processing devices such as vending machines and ATMs include, for example, ring-type magnetic heads and MR heads. However, since the output waveform obtained by scanning the printed matter magnetically printed by the ring-type magnetic head or MR head is a differential waveform such as initial permeability, the magnetism of the printed image portion is strictly evaluated based on it. It is difficult.
[0005]
Recently, some TMF sensors that can detect the amount of magnetism have also been used. However, since none of the magnetic sensors detect the quality of the magnetic material itself, a counterfeit ticket mixed with ink with an appropriate blending amount using a magnetic material different from the genuine material is used as an MR head, ring-type head or Even if an authenticity check is performed using a current magnetic sensor such as a TMF sensor, it may be erroneously discriminated when a magnetic waveform similar to a genuine note is obtained. In order to discriminate such a counterfeit ticket as a fake without making a mistake, there is a problem that it is not sure to check using a conventional method using only a magnetic sensor.
[0006]
In addition, among the banknotes in circulation, those whose ink is worn by friction between banknotes or friction by a mechanical processing device such as ATM, and whose physical quantity of magnetic material is reduced compared to genuine bills are also circulating in the market. .
[0007]
Therefore, in order to solve the above problems, the present invention discriminates a counterfeit printed matter made of a magnetic material different from the real one made by using a magnetic pencil or a copying technique without mistake, and the ink is worn due to friction. In order to discriminate genuine bills as genuine, in addition to the known MR head, ring-type head, or TMF sensor measurement method, a method of detecting a change in magnetic flux by applying a vertical magnetic field is used to ensure authenticity It is to provide a printed matter that can be discriminated, its authenticity determination method, and an authenticity determination device.
[0008]
[Means for Solving the Problems]
The printed matter of the present invention is a printed matter obtained by printing at least two kinds of magnetic inks having different magnetic anisotropies on at least two different positions on a substrate,
In authenticity determination, a magnetic field application unit applies a bias magnetic field in the vertical direction, and when the printed matter passes through the space of the bias magnetic field, magnetic flux changes in magnetic ink portions at at least two different positions on the printed matter are vertical. It is detected by the magnetic flux detector, and the difficulty of being magnetized by the perpendicular magnetic field of at least two types of magnetic ink is read from the detected waveform, and the difference in magnetic quality between the at least two types of magnetic ink is detected, and the position detector The position of at least two types of magnetic ink on the printed matter in which the change in the vertical magnetic flux is detected is detected by the above, and the difference in magnetic quality between the at least two types of magnetic ink on the genuine printed matter stored in advance and the specified position are determined. It is characterized by the fact that it can be verified and true / false can be determined.
[0009]
According to this printed matter, when a printed matter printed using a magnetic material that is easily magnetized by a vertical magnetic field and a magnetic material that is difficult to be magnetized is measured with a magnetic sensor by applying a bias magnetic field in the vertical direction with a permanent magnet or the like, A portion of the magnetic material that is difficult to be magnetized can be detected, and the authenticity can be checked based on whether or not the desired magnetic anisotropy is at a desired position.
[0010]
The printed matter authenticity determination method of the present invention is a printed matter authenticity determination method in which at least two types of magnetic inks having different magnetic anisotropies are printed on at least two different positions on a substrate,
The magnetic field application unit applies a bias magnetic field in the vertical direction,
When the printed matter passes through the space of the bias magnetic field by the vertical magnetic flux detection unit, a change in magnetic flux of magnetic ink portions at different positions in at least two places of the printed matter is detected.
From the detected waveform, read the difficulty of being magnetized by the vertical magnetic field of at least two types of magnetic ink, detect the difference in magnetic quality of the at least two types of magnetic ink, and change the vertical magnetic flux by the position detection unit The position of at least two types of magnetic ink is detected and the authenticity is discriminated by comparing the difference in magnetic quality of at least two types of magnetic ink stored on a genuine print stored in advance with the specified position. It is said.
[0011]
In general, a known magnetic sensor used for authenticity determination of banknotes or the like applies a bias magnetic field in the horizontal direction. In the present invention, a bias magnetic field is applied in the vertical direction, and a printed matter passing through the magnetic field is a vertical magnetic field. Depending on whether the magnetic material is easily magnetized or not, extremely high authenticity determination is performed.
[0012]
According to this authenticity determination method, when a bias magnetic field is applied in the vertical direction, the printed matter is passed through and detected by a magnetic sensor, a pattern with the vertical magnetic field of the printed matter is obtained, and the authenticity is checked based on this pattern. It can be done.
[0013]
The printed matter authenticity determination method of the present invention is a printed matter authenticity determining method in which at least two types of magnetic inks having different magnetic anisotropies are printed on a substrate at at least two different positions, A bias magnetic field is applied in the vertical direction by the applying unit, and a magnetic flux change in magnetic ink portions at at least two different positions of the printed material is detected by the vertical magnetic flux detecting unit when the printed material passes through the space of the bias magnetic field. Further, by moving the printed matter to a horizontal magnetic flux detection unit, a bias magnetic field is applied in the horizontal direction by the magnetic field applying unit, and when the printed matter passes through the space of the bias magnetic field, at least the printed matter The magnetic flux change of the magnetic ink portions at two different positions is detected, and from the two magnetic flux changes, the vertical magnetic field of at least two kinds of magnetic inks are detected. Reads the difficulty of being magnetized by a horizontal magnetic field, detects the difference in magnetic quality of the at least two types of magnetic ink, and positions of at least two types of magnetic ink on the printed matter in which the vertical magnetic flux and horizontal magnetic flux are changed by the position detection unit Is detected, and the authenticity is discriminated by comparing the difference between the magnetic qualities of at least two kinds of magnetic inks on a genuine printed matter stored in advance with a specified position.
[0014]
According to this authenticity determination method, when a bias magnetic field is applied in the vertical direction, the printed matter is passed through and detected by a magnetic sensor, a vertical magnetic field pattern showing different levels depending on the portion of the printed matter is obtained. And authenticity can be checked.
[0015]
Furthermore, a general magnetic sensor that applies a bias magnetic field in the horizontal direction is also provided, and the so-called magnetic anisotropy that is difficult to be magnetized in the horizontal direction and the vertical direction can be obtained by the detection voltages of the two magnetic sensors. Depending on whether or not a magnetic material having a desired magnetic anisotropy is at a desired position, a more accurate authenticity check can be performed.
[0016]
The printed matter authenticity discriminating device of the present invention is a printed matter authenticity discriminating device in which at least two types of magnetic inks having different magnetic anisotropies are printed at at least two different positions,
A magnetic field application unit in which one or more permanent magnets or winding coils for applying a bias magnetic field in the vertical direction are arranged in a desired direction on the printed material; and when the printed material passes through the space of the bias magnetic field. A magnetic flux sensor that detects a magnetic flux change, and a sensor unit comprising:
A position detection unit for detecting the position of the printed matter in which the magnetic flux change is detected;
An amplifier unit for performing amplification and waveform shaping of a detection signal of magnetic flux change output from the vertical magnetic flux detection unit of the sensor unit;
A data storage unit for storing the signal amplified and waveform-shaped by the amplifier unit as magnetic data;
Based on the position signal from the position detection unit of the at least two types of magnetic ink, the correction of the misalignment of the magnetic data is calculated, and the specified positions of the printed matter of the at least two types of magnetic ink are stored in advance. A true / false determination unit for determining whether or not the specified positions of at least two types of magnetic ink on a genuine print are matched,
A control unit that controls the data storage unit and the authenticity determination unit;
A result output unit that outputs a determination result as to whether or not at least two types of magnetic ink from the authenticity determination unit are in a prescribed position; and
And a display unit for displaying the result of the result output unit.
[0017]
According to this authenticity determination device, a method of generating a vertical bias magnetic field can be a known method using a permanent magnet or a winding coil. In the present invention, a magnetic sensor using a permanent magnet is used. The desired vertical magnetic field was obtained by adjusting the position and the direction of N · S. In the present invention, the detection voltage of the vertical magnetic field can be obtained simply by adding a permanent magnet to a magnetic sensor already installed in an existing ATM or the like. The true / false discrimination circuit can perform true / false discrimination by calculating based on the magnetic material that is not easily magnetized by the detected vertical magnetic field.
[0018]
The printed matter authenticity discriminating device of the present invention is a printed matter authenticity discriminating device in which at least two kinds of magnetic inks having different magnetic anisotropies are printed at at least two different positions,
A magnetic field application unit in which one or more permanent magnets or winding coils for applying a bias magnetic field in the vertical direction to the printed material are arranged in a desired direction; and the printed material passes through the space of the vertical bias magnetic field. A sensor unit comprising: a vertical magnetic flux detection unit for detecting a magnetic flux change by a magnetic sensor; and a horizontal magnetic flux detection unit for detecting a magnetic flux change by applying a bias magnetic field in a horizontal direction;
A position detection unit for detecting the position of the printed matter obtained by measuring the vertical magnetic flux and the horizontal magnetic flux;
An amplifier unit for performing amplification and waveform shaping of detection signals of respective magnetic flux changes output from the two magnetic flux detection units of the sensor unit;
A data storage unit for storing signals from the two magnetic flux detection units amplified and waveform-shaped by the amplifier unit as magnetic data;
Based on the position signal from the position detection unit, the correction of the positional deviation of the two magnetic flux detection units is calculated, and the specified position of the printed matter of magnetic ink in which the at least two kinds of different magnetic materials are blended is determined in advance. A true / false determination unit that determines whether or not the specified position of the magnetic ink containing at least two different magnetic materials on the stored authentic printed matter is matched.
A control unit that controls the data storage unit and the authenticity determination unit;
A result output unit that outputs a determination result as to whether or not at least two types of magnetic ink from the authenticity determination unit are in a prescribed position; and a display unit that displays a result of the result output unit. It is characterized by.
[0019]
According to this authenticity determination device, a method of generating a vertical bias magnetic field can be any known method using a permanent magnet or a wound coil. The desired vertical magnetic field is obtained by adjusting the position of the sensor and the direction of N · S. A method of measuring a change in magnetic flux by applying a horizontal bias magnetic field may be a known method. In the present invention, a ring type magnetic head that generates a magnetic flux in a substantially horizontal direction between gaps is used. The true / false discrimination circuit calculates based on the magnetic material that is hard to be magnetized by the detected vertical magnetic field and horizontal magnetic field, and can determine true / false depending on whether or not there is a desired magnetic anisotropy ink at a desired position. Is.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
The authenticity determination method of the present invention is to determine the authenticity by detecting the so-called magnetic anisotropy by measuring the ease of magnetization by applying a bias magnetic field in the vertical direction, and using FIG. The principle of the present invention will be described. Further, using these authenticity determination methods, a description will be given together with a true / false determination device for determining authenticity of printed matter printed at at least two different positions with different residual magnetic flux densities when a saturation magnetic field is applied according to the present invention.
[0021]
In general, when a permanent magnet is manufactured, if a magnetic field orientation is aligned in a predetermined direction to have anisotropy, and a magnetization direction is performed in accordance with the magnetic field orientation, a strong magnet can be produced. When magnetizing, it is easy to place N and S poles at both ends in the long side direction of the bar magnet as shown in FIG. 1 (a), and at both ends in the short side direction of the bar magnet as shown in FIG. 1 (b). Is difficult to place. Further, magnetization can be in the same condition in which direction for the case of FIG. 1 (c) are spherical.
[0022]
In the present invention, this principle is applied to the particle shape of the magnetic material itself to detect the magnetic anisotropy of the ink. FIG. 2 shows two magnetic materials having different particle shapes, and FIG. 2 (a) is a lump magnetic material (1) having a spherical or lump particle shape, so that it is magnetized under the same conditions in any direction. However, since FIG. 2 (b) is a flaky magnetic material (2), it is a magnetic material having characteristics that it is easy to be magnetized at both ends in the plane direction of the particle and difficult to magnetize in the thickness direction. Shows anisotropy.
[0023]
These magnetic materials are kneaded with a varnish or wax by a known method to produce a magnetic ink, and paper (3) or the like can be printed by a printing method capable of transferring a large amount of ink such as intaglio printing, screen printing, and gravure printing. Printing on the substrate. At this time, if a flaky magnetic material as shown in FIG. 2 (b) is used, the resin component in the ink penetrates into the paper to some extent and is dried and cured. As shown in FIG. Since the magnetic material (2) overlaps horizontally, the printed matter exhibits magnetic anisotropy. On the other hand, the bulk magnetic material (1) shown in FIG. 2 (a) does not show magnetic anisotropy because it is in the shape of a sphere or a bulk particle.
[0024]
FIG. 3 is a diagram showing a flow when measuring a flaky magnetic material (2) having different magnetic anisotropy.
[0025]
FIG. 3A shows the result of measurement with a ring-type head (4) which is one of general magnetic sensors. Since the applied magnetic flux (5) is in the horizontal direction, the horizontal magnetization waveform (8) is As a result, a large detection voltage was confirmed.
[0026]
Here, the “detection voltage” handled in the present invention is an amount that changes the magnetic flux when the magnetic ink moves in the space to which the bias magnetic field is applied, and is a voltage value output by a magnetic head such as the ring-type head (4). That is. As shown in the waveforms of FIGS. 3A and 3B, the detection voltage when magnetic ink is measured shows a peak in one polarity at the beginning of the ink and a peak in the opposite polarity at the tail. This is generally referred to as a differential waveform, and in the present invention, this difference in differential waveform is referred to.
[0027]
In FIG. 3 (b), a ring-type head (4) and a permanent magnet are combined and magnetic flux (5) is applied in the vertical direction, and measurement is performed with the magnetic head. As a method of setting the magnetic flux (5) in the vertical direction, the N poles of the two ferrite magnets (7) are arranged to face each other (the middle diagram in FIG. 3B), and a large magnetic flux is generated in the vertical direction by repulsive force. (5) is obtained. (Because the magnetic flux is vertical in the space where the ring-type head can be measured, it is possible to detect a change in the magnetic flux in the vertical direction.) Results of measuring ink using the flaky magnetic material (2) by this method In the perpendicular magnetization waveform (9), the particle shape of the magnetic ink was flat, so that it was difficult to be magnetized in the vertical direction, so the detection voltage was small. In the example of FIG. 3B, a configuration in which the ring type head (4) and the ferrite magnet (7) are combined is shown. However, the ring type head (4) is used as a magnetic sensor of another type, and a ferrite magnet ( A configuration in which 7) is replaced with a rare earth magnet or a wound coil can also be used.
[0028]
Next, the present invention will be described in more detail with reference to specific examples.
(Embodiment) FIG. 4 is a plan view and a schematic sectional view of a document showing an example of a printed matter of the present invention. In this embodiment, two kinds of magnetic materials having different magnetic anisotropy, ferrite powder and soft magnetic stainless powder, were selected. The ferrite powder has characteristics that the saturation magnetic flux density is about 80 emu / g, the coercive force is about 40 Oe, the average particle size is 4.5 to 6.5 μm, and the shape is not flat. The properties of soft magnetic stainless steel powder are a flat shape with a saturation magnetic flux density of about 124 emu / g, a holding power of about 29 Oe, and an average particle size of about 4 μm.
[0029]
These two kinds of magnetic materials were blended with varnish or the like (the details are not specified), and magnetic inks were respectively produced based on known ink production methods. The blending ratio of the magnetic material in the ink was 15 weight% for the ferrite powder and 3 weight% for the soft magnetic stainless steel powder, and the ferrite powder magnetic ink (10) and the stainless steel powder magnetic ink (11), respectively. The reason why these blending ratios are different is to adjust the ink so that the detection voltage is obtained to the same extent in a known measurement method using a ring-type head, and to compare the known measurement method with the method of the present invention. is there.
[0030]
FIG. 4 shows a document (13) obtained by printing on fine paper (12) using the two types of magnetic inks. As a printing method, a screen printing method capable of transferring a large amount of ink was performed, and the letters “UVM” were applied using ferrite powder magnetic ink (10), and the letters “LMN” were applied using stainless steel magnetic ink (11). .
[0031]
FIG. 5 shows an embodiment of a true / false discrimination device for discriminating a printed matter according to the present invention. The sensor unit (14), the position detection unit (15), the amplifier unit (16), and a control unit for authenticity discrimination ( 17) It is comprised from the result output part (18) and the display part (19).
The sensor unit (14) has two magnetic sensors, one of which is a known measurement method and applies a bias magnetic field in the horizontal direction by the ring-type head (4) to measure the magnetic flux change in the document. One is a combination of the ring type head (4) of the present invention and a ferrite magnet (7). As shown in FIG. 3B, the N poles of the two ferrite magnets (7) are arranged facing each other. Then, the detection voltage is measured while applying the bias magnetic field (5) in the vertical direction by repulsion. In this embodiment, a ring-type head is used for these two magnetic sensors. However, the present invention is not limited to this, and other magnetic sensors can be used.
The position detection unit (15) is a device that detects the position of the document and can accurately specify the scanning position.
The amplifier unit (16) performs amplification and waveform shaping of the detection signal output from the sensor unit (14).
The control unit (17) includes a data storage unit (20) and a true / false determination unit (21). The data storage unit (20) stores signals from the two magnetic sensors as magnetic data, and a true / false determination unit ( 21) corrects the positional deviation between the two magnetic data based on the signal from the position detector (15), calculates the anisotropy by calculating the two magnetic data, and obtains the desired anisotropy. It is determined whether or not the magnetic ink is at a specified position on the document.
The result output unit (18) outputs the result of the authenticity determination unit.
The display unit (19) displays the result of the result output unit (18).
[0032]
FIG. 6 shows a configuration example of the sensor unit of the authenticity discrimination device. The horizontal magnetic field detector ( 25 ) was installed so that a general ring-type head used in a vending machine or the like was in light contact with the document, and the detection voltage due to the horizontal magnetic field was measured.
[0033]
The vertical magnetic field detection unit ( 26 ) was composed of a ring type head (4) and two ferrite magnets (7), and was installed so as to lightly contact the document (13). In order to obtain the vertical bias magnetic flux ( 23 ) of the vertical magnetic field detector ( 26 ), ferrite magnets (7) with external dimensions of 10 mm long × 3 mm wide × 2 mm thick and with a magnetic force of 600 G are placed on both sides of the ring type head (4). Arranged. As shown in FIG. 6, the magnetic poles are arranged so that the N poles are opposed to each other, because the bias magnetic flux is devised so that it can be applied in the vertical direction directly below the ring type head (4).
[0034]
FIG. 7 shows the result when the document (13) produced in FIG. 4 is relatively moved at a conveyance speed of 1 m / sec. The relative movement means that the printed matter may be moved or the apparatus side may be moved. FIG. 7A shows a waveform of a detection voltage of the horizontal bias magnetic flux ( 24 ) by the ring type head alone, and FIG. 7B shows a vertical bias magnetic flux (23) by the ring type head (4) and the ferrite magnet (7). The waveform of the detection voltage is shown.
[0035]
7 (a) and 7 (b) shows that there is no anisotropy in the printed portion “UVW” of the document design in FIG. 4 because there is a change in magnetic flux in both the vertical and horizontal magnetic fields. On the other hand, in the printing region “LMN”, it can be determined that the magnetic ink has magnetic anisotropy because there is a magnetic flux change in the vertical magnetic field and no magnetic flux change in the horizontal magnetic field.
[0036]
When the results of the vertical bias magnetic flux ( 23 ) and the horizontal bias magnetic flux ( 24 ) are summarized, the table shown in FIG. 7C is obtained. The magnetic anisotropy cannot be recognized in the printed region “UVW”, and the magnetic property in the printed region “LMN”. Since the anisotropy has been recognized, the authenticity determination apparatus of the present invention determines that this document (13) is authentic, and determines other documents as fake.
[0037]
【The invention's effect】
As described above in detail, according to the present invention, since the printed matter is printed using a magnetic material that is easily magnetized by a perpendicular magnetic field and a magnetic material that is difficult to be magnetized, a bias magnetic field is applied to the printed matter in the vertical direction by a permanent magnet or the like. When applied and measured with a magnetic sensor, it is possible to detect a portion of the magnetic material that is difficult to be magnetized by the perpendicular magnetic field printed on the printed matter, so that the desired magnetic anisotropy is at the desired position. The authenticity can be checked depending on whether or not there is.
[0038]
Further, in the present invention, the magnetic sensor used for authenticity determination of the printed material applies a bias magnetic field in the vertical direction, and the printed material that has passed there is extremely high depending on whether the magnetic material is easily magnetized by the vertical magnetic field. Authenticity discrimination can be performed. Furthermore, according to the printed matter discrimination method of the present invention, when a bias magnetic field is applied in the vertical direction and the printed matter is passed through and detected by a magnetic sensor, a pattern with a perpendicular magnetic field of the printed matter is obtained. You can check the authenticity.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating the principle of the present invention.
FIG. 2 is a diagram showing two magnetic materials having different particle shapes.
FIG. 3 is a diagram showing a flow when measuring a magnetic ink in which two kinds of magnetic materials having different magnetic anisotropies are mixed.
FIG. 4 is a diagram illustrating an example of a printed matter according to the present invention.
FIG. 5 is a diagram showing an embodiment of a true / false determination apparatus according to the present invention.
FIG. 6 is a diagram showing an embodiment of a sensor unit of the authenticity determination device of the present invention.
FIG. 7 shows a result when the printed material according to an embodiment of the present invention is transported and moved.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Lump-shaped magnetic material 2 Flakes-like magnetic material 3 Paper 4 Ring type magnetic head 5 Magnetic flux 6 Magnetic domain 7 Ferrite magnet 8 Horizontal magnetization waveform 9 Vertical magnetization waveform 10 Ferrite powder magnetic ink 11 Stainless steel powder magnetic ink 12 Fine paper 13 Document 14 Sensor Unit 15 position detection unit 16 amplifier unit 17 control unit 18 result output unit 19 display unit 20 data storage unit 21 authenticity determination unit 23 vertical bias magnetic flux 24 horizontal bias magnetic flux 25 horizontal magnetic field detection unit 26 vertical magnetic field detection unit

Claims (5)

A printed matter obtained by printing at least two types of magnetic inks having different magnetic anisotropies on at least two different positions on a substrate,
In authenticity determination, a magnetic field application unit applies a bias magnetic field in the vertical direction, and when the printed matter passes through the space of the bias magnetic field, magnetic flux changes in magnetic ink portions at at least two different positions on the printed matter are vertical. It is detected by the magnetic flux detector, and the difficulty of being magnetized by the perpendicular magnetic field of at least two types of magnetic ink is read from the detected waveform, and the difference in magnetic quality between the at least two types of magnetic ink is detected, and the position detector The position of at least two types of magnetic ink on the printed matter in which the change in the vertical magnetic flux is detected is detected by the above, and the difference in magnetic quality between the at least two types of magnetic ink on the genuine printed matter stored in advance and the specified position are determined. Printed matter characterized in that it can be verified by authenticating. A method for determining authenticity of a printed matter in which at least two types of magnetic inks having different magnetic anisotropies are printed on at least two different positions on a substrate,
The magnetic field application unit applies a bias magnetic field in the vertical direction,
When the printed matter passes through the space of the bias magnetic field by the vertical magnetic flux detection unit, a change in magnetic flux of magnetic ink portions at different positions in at least two places of the printed matter is detected.
From the detected waveform, read the difficulty of being magnetized by the vertical magnetic field of at least two types of magnetic ink, detect the difference in magnetic quality of the at least two types of magnetic ink, and change the vertical magnetic flux by the position detection unit The position of at least two types of magnetic ink is detected and the authenticity is discriminated by comparing the difference in magnetic quality of at least two types of magnetic ink stored on a genuine print stored in advance with the specified position. The authenticity judgment method of the printed matter. A method for determining the authenticity of printed matter in which at least two types of magnetic inks having different magnetic anisotropies are printed on a substrate at at least two different positions, and a magnetic field application unit applies a bias magnetic field in the vertical direction. The vertical magnetic flux detection unit detects a change in magnetic flux of magnetic ink portions at at least two different positions of the printed matter when the printed matter passes through the space of the bias magnetic field, and further detects the printed matter as a horizontal magnetic flux detection unit. The magnetic field application unit applies a bias magnetic field in the horizontal direction, and when the printed matter passes through the space of the bias magnetic field, the magnetic flux of magnetic ink portions at different positions in at least two places of the printed matter. Changes are detected, and the difficulty of being magnetized by the vertical magnetic field and horizontal magnetic field of at least two types of magnetic ink is read from the two magnetic flux changes. In addition to detecting the difference in magnetic quality between the at least two types of magnetic ink, the position detection unit detects the position of at least two types of magnetic ink in the printed matter in which the vertical magnetic flux and the horizontal magnetic flux have changed, and stores them in advance. A method for determining authenticity of a printed matter, wherein the authenticity is determined by comparing a difference in magnetic quality between at least two types of magnetic ink on a genuine printed matter with a specified position. An apparatus for determining authenticity of a printed matter in which at least two types of magnetic inks having different magnetic anisotropies are printed at at least two different positions,
A magnetic field application unit in which one or more permanent magnets or winding coils for applying a bias magnetic field in the vertical direction are arranged in a desired direction on the printed material; and when the printed material passes through the space of the bias magnetic field. A magnetic flux sensor that detects a magnetic flux change, and a sensor unit comprising:
A position detection unit for detecting the position of the printed matter in which the magnetic flux change is detected;
An amplifier unit for performing amplification and waveform shaping of a detection signal of magnetic flux change output from the vertical magnetic flux detection unit of the sensor unit;
A data storage unit for storing the signal amplified and waveform-shaped by the amplifier unit as magnetic data;
Based on the position signal from the position detection unit of the at least two types of magnetic ink, the correction of the misalignment of the magnetic data is calculated, and the specified positions of the printed matter of the at least two types of magnetic ink are stored in advance. A true / false determination unit for determining whether or not the specified positions of at least two types of magnetic ink on a genuine print are matched,
A control unit that controls the data storage unit and the authenticity determination unit;
A result output unit that outputs a determination result as to whether or not at least two types of magnetic ink from the authenticity determination unit are in a prescribed position; and
A true / false discrimination device comprising a display unit for displaying a result of the result output unit. An apparatus for determining authenticity of a printed matter in which at least two types of magnetic inks having different magnetic anisotropies are printed at at least two different positions,
A magnetic field application unit in which one or more permanent magnets or winding coils for applying a bias magnetic field in the vertical direction to the printed material are arranged in a desired direction; and the printed material passes through the space of the vertical bias magnetic field. A magnetic flux sensor that detects a magnetic flux change, a horizontal magnetic flux detection unit that applies a bias magnetic field in the horizontal direction and the magnetic sensor detects a magnetic flux change,
A position detection unit for detecting the position of the printed matter obtained by measuring the vertical magnetic flux and the horizontal magnetic flux;
An amplifier unit for performing amplification and waveform shaping of detection signals of respective magnetic flux changes output from the two magnetic flux detection units of the sensor unit;
A data storage unit for storing signals from the two magnetic flux detection units amplified and waveform-shaped by the amplifier unit as magnetic data;
Based on the position signal from the position detection unit, the correction of the positional deviation of the two magnetic flux detection units is calculated, and the specified position of the printed matter of magnetic ink in which the at least two kinds of different magnetic materials are blended is determined in advance. A true / false determination unit that determines whether or not the specified position of the magnetic ink containing at least two different magnetic materials on the stored authentic printed matter is matched.
A control unit that controls the data storage unit and the authenticity determination unit;
A result output unit that outputs a determination result as to whether or not at least two types of magnetic ink from the authenticity determination unit are in a prescribed position; and a display unit that displays a result of the result output unit. A true / false discrimination device characterized by

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