JP4946155B2 - Security media reader - Google Patents

Description

The present invention relates to security medium reader.

A gold voucher such as a gift certificate or gift voucher requires a forgery prevention function based on its value, and various measures are taken on a base material (voucher) (for example, Patent Document 1).
Patent Document 1 discloses a cash voucher having a hologram layer on the surface so that authentication can be easily performed. Such a voucher can be easily determined for authenticity, but it is not perfect as a countermeasure against counterfeiting. In addition, when there are a large number of cash vouchers, there is a problem that it is difficult to immediately determine the authenticity.
Japanese Patent Application Laid-Open No. 07-285286

An object of the present invention has high security, is to provide an easily can be efficiently carried Rousset Kyuriti medium reader authentication judgment.

The present invention solves the above problems by the following means. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated in a parenthesis, it is not limited to this.
The invention of claim 1 includes a sheet-like substrate (20), an amorphous ferromagnetic layer (31) having specific magnetization characteristics and storing desired information by magnetism, and the sheet-like substrate ( Reading means for reading desired information and / or code pattern of the amorphous ferromagnetic layer from the side surface of the security medium by bundling a plurality of security media including the anti-counterfeit thread (30) engraved into 20) A security medium reading device.

According to a second aspect of the present invention, in the security medium reading device according to the first aspect , the amorphous ferromagnetic layer (31) of the anti-counterfeit thread (30) of the security medium is formed with a code pattern. A security medium reader characterized by the above.

A third aspect of the present invention, in the security medium reading apparatus according to claim 2, wherein the code pattern of the identification medium is a security medium reader which is a base information and / or denomination information .

According to a fourth aspect of the present invention, in the security medium reading device according to any one of the first to third aspects, the anti-counterfeit thread (30) of the security medium is the sheet-like base material (20). It is a security medium reading device characterized in that it is drawn into a part or all of the peripheral portion of the security medium .

According to a fifth aspect of the present invention, in the security medium reading device according to any one of the first to fourth aspects, the amorphous ferromagnetic layer (31) of the forgery prevention thread (30) of the security medium. Is a security medium reader characterized by being a thin film having a thickness of 500 to 5000 mm.

According to a sixth aspect of the present invention, in the security medium reading device according to any one of the first to fifth aspects, at least a part of the forgery prevention thread (30) of the security medium is the sheet-like base. The security medium reading device is characterized in that the paper is drawn so as to be exposed from the material (20).

According to a seventh aspect of the present invention, in the security medium reading device according to the sixth aspect, the anti-counterfeit thread (30) of the security medium forms a hologram on the amorphous ferromagnetic layer (31). A security medium reading device comprising a layer (32).

The invention according to claim 8 is the security medium reader according to claim 6 or 7, wherein the anti-counterfeit thread (30) of the security medium is a colored layer that conceals the amorphous ferromagnetic layer (31). (33) A security medium reading device comprising:

As described above, the present invention has the following effects.
(1) Since the sheet-like base material incorporates an anti-counterfeit thread provided with an amorphous ferromagnetic layer, desired information can be stored by specific magnetization characteristics, and forgery of a security medium can be prevented. Can do.
(2) Since the code pattern is formed in the amorphous ferromagnetic layer, the security medium can be used in various ways according to the application.
(3) Since the code pattern records the base material information and / or the denomination information, it can be used for a cash voucher such as a banknote that requires high security.
(4) Since the anti-counterfeit thread is formed on a part or all of the peripheral portion of the sheet-like base material, desired information and / or code pattern information can be read from the side surface of the sheet-like base material.
(5) Since the amorphous ferromagnetic layer is a thin film having a thickness of 500 to 5000 mm, desired information and / or code pattern can be optimally read.
(6) Since the anti-counterfeit thread includes the hologram forming layer on the amorphous ferromagnetic layer, the security medium can perform an authenticity determination by visual observation and can improve security.
(7) Since the security medium includes the colored layer, the amorphous ferromagnetic layer of the anti-counterfeit thread can be concealed.
(8) Since the security medium reading device includes a reading unit that bundles a plurality of security media and reads the side surfaces thereof, the information on the plurality of security media can be efficiently read and the authenticity can be determined efficiently.

  It is an object of the present invention to provide a security medium and a security medium reading device that have high security and can easily and authenticate authentication, and forgery prevention having an amorphous ferromagnetic layer on the peripheral edge of a sheet-like substrate. This is achieved by embedding threads.

Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.
1A and 1B are schematic views showing a security medium according to an embodiment of the present invention. FIG. 1A is a plan view, FIG. 1B is a side view of a long side portion of the security medium, and FIG. ) Is a side view of the short side portion, and FIG. 1D is a detailed view of a portion A of FIG. 2 is a diagram showing a security medium and a magnetic head for reading the security medium, and FIG. 3 is a diagram showing BH magnetization characteristic curves of an amorphous alloy material and a ferrite material.

As shown in FIGS. 1A to 1C, the security medium 10 is a gift certificate (¥ 5,000) having a forgery prevention function by incorporating a forgery prevention thread 30 into the sheet-like base material 20. It is.
The sheet-like base material 20 is a base material for the security medium 10 formed of high-quality paper.
As shown in FIG. 1D, the forgery prevention thread 30 is a thread provided with an amorphous ferromagnetic layer 31, a hologram forming layer 32, a colored layer 33, and a resin base material 34. As shown in C), only a region of a stereoscopic image 32 </ b> A of a hologram forming layer 32 described later is exposed from the sheet-like substrate 20.

  The amorphous ferromagnetic layer 31 is a thin film layer that is formed of an amorphous alloy material and stores information used for authenticity determination as magnetic data. The film thickness of the amorphous ferromagnetic layer 31 is preferably 500 to 5000 mm, and more preferably 1500 to 3000 mm. If it is out of this range, problems such as insufficient magnetic output and reduced transferability and abrasion resistance occur. In this embodiment, a thin film layer having a thickness of 1500 mm is used. In addition, as shown in FIG. 1D, the amorphous ferromagnetic layer 31 has a code pattern formed by a demetalization method or the like. The code pattern of the amorphous ferromagnetic layer 31 includes the amount of money (¥ 5,000) information is recorded.

  The amorphous alloy material used for the amorphous ferromagnetic layer 31 is a magnetic material having the property that the magnetic permeability and the saturation magnetization characteristic are changed by heating, cutting, and the like. Further, as shown in FIG. 3, when compared with the magnetization characteristics of a general ferrite material as a magnetic material, the ferrite material exhibits an S-shaped hysteresis curve (Fe), whereas the amorphous alloy material has a rectangular shape. It also exhibits a hysteresis (Am) and has a property (large Barkhausen phenomenon) in which magnetization reversal is repeated sharply by a low-intensity oscillating magnetic field. Using these properties, the amorphous ferromagnetic layer 31 can store and read out information used for authenticity determination and the like. Furthermore, the properties of the amorphous alloy material can be changed by changing the material to be blended. In the present embodiment, the forgery prevention effect is enhanced by blending materials that are difficult to obtain in the general market and requiring a special device for forming the amorphous ferromagnetic layer 31.

The hologram forming layer 32 is a layer in which a stereoscopic image 32A is recorded using a laser beam. By applying light, the stereoscopic image 32A can be reproduced, and authenticity can be determined visually.
The colored layer 33 is a printed layer for concealing the amorphous ferromagnetic layer 31 from the outside. As shown in FIG. 1A, the colored layer 33 is other than the stereoscopic image 32A of the hologram forming layer 32 of the anti-counterfeit thread 30 as shown. These areas are concealed by the colored layer 33.
The resin base material 34 is a base material of the anti-counterfeit thread 30 and is a sheet having a thickness of 16 μm formed from PET (polyethylene terephthalate).

As shown in FIG. 2, the magnetic head 40 includes a detection coil unit 41, an excitation coil unit 42, a control unit 43, and a display unit 44, and a detector that reads the magnetic data and pattern code of the amorphous ferromagnetic layer 31. (Security medium reader).
The detection coil unit 41 includes a solenoid coil 41-A that detects a change in magnetic flux generated from the amorphous ferromagnetic layer 31, and an amplifier 41-B that amplifies and outputs the detection data (reading means). .
The excitation coil section 42 includes a solenoid coil 42-A that applies an alternating excitation magnetic field to the amorphous ferromagnetic layer 31, and an amplifier 42-B that passes an alternating excitation current that generates an alternating excitation magnetic field in the solenoid coil 42-A. ing.

The control unit 43 outputs a command signal for supplying a predetermined alternating excitation current to the solenoid coil 42 -A of the excitation coil unit 42 to the amplifier 42 -B, and detects a change in magnetic flux generated from the amorphous ferromagnetic layer 31. This is a control circuit that performs overall control of the entire magnetic head that inputs the detection result of the solenoid coil 41-A of the detection coil section 41 via the amplifier 41-B.
The display unit 44 is a display monitor that displays the result detected by the detection coil unit 41 via the control unit 43.
Subsequently, a method of reading a security medium by the magnetic head of this embodiment will be described. FIG. 4 is a diagram illustrating an example of excitation and detection data of the excitation coil unit and the detection coil unit. FIG. 4A is a diagram showing time-series data of an alternating excitation magnetic field generated by the excitation coil unit, and FIG. 4B is a detection coil unit that detects a change in magnetic flux of the amorphous ferromagnetic layer due to the alternating excitation magnetic field. It is a figure which shows the time series data of the detection result detected by this.

As shown in FIG. 2, the plurality of security media 10 are bundled so that the positions of the forgery prevention threads 30 coincide with each other. When the power is turned on, the control unit 43 of the magnetic head 40 supplies a harmonic alternating excitation current to the solenoid coil 42-A of the excitation coil unit 42 via the amplifier 42-B, as shown in FIG. Thus, an alternating excitation magnetic field exceeding the limit magnetic field (Hp, -Hp) shown in FIG. 3 is generated in the solenoid coil 42-A.
Subsequently, the magnetic head 40 is brought close to the side surface of the amorphous ferromagnetic layer 31 of the security medium 10, and a large Barkhausen phenomenon is caused by an alternating excitation magnetic field exceeding the limit magnetic field (Hp, −Hp). The change of the magnetic flux generated from 31 is detected by the solenoid coil 41-A of the detection coil unit 41 as shown in FIG. The control unit 43 inputs the detected result via the amplifier 41 -B and displays it on the display unit 44.

  By moving the magnetic head 40 in the direction of arrow B in FIG. 2, the amorphous ferromagnetic layers 31 of the plurality of security media 10 are sequentially detected, and the detection results are displayed on the display unit 44 in the detected order. The detected data is authenticity information and gift certificate information recorded in the amorphous ferromagnetic layer 31. If a forged security medium is mixed, the display of the detection result of the medium is blank. , It can be immediately determined that it is a fake. Further, by increasing the exciting current flowing through the solenoid coil 42-A of the exciting coil section 42, the magnetic flux of the amorphous ferromagnetic layer 31 can be detected in a non-contact manner (maximum of about 10 mm).

From the above, the security medium of this embodiment or the magnetic head for reading the same has the following effects.
(1) Since the sheet-like base material 20 incorporates the anti-counterfeit thread 30 provided with the amorphous ferromagnetic layer 31, it is possible to store authentication information by specific magnetization characteristics. Counterfeiting can be prevented.
(2) Since the amorphous ferromagnetic layer 31 is formed with the code pattern, the gift certificate information (¥ 5,000) of the security medium 10 can be recorded.
(3) Since the anti-counterfeit thread 30 is formed on a part or all of the peripheral edge of the sheet-like base material 20, it is possible to read the information for authenticity determination and the code pattern information from the side surface of the sheet-like base material 20. it can.
(4) Since the amorphous ferromagnetic layer 31 is a thin film having a thickness of 1500 mm, desired information and / or code patterns can be optimally read.
(5) Since the anti-counterfeit thread 30 includes the hologram forming layer 32 on the amorphous ferromagnetic layer 31, the security medium 10 can make an authenticity determination visually and improve security. it can.
(6) Since the security medium 10 includes the colored layer 33, the amorphous ferromagnetic layer 31 of the anti-counterfeit thread 30 can be concealed.
(7) Since the magnetic head 40 includes the detection coil unit 41 that bundles a plurality of security media 10 and reads the side surfaces thereof, the information of the plurality of security media 10 can be read and the authenticity can be determined efficiently. .

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, and these are also within the equivalent scope of the present invention.
(1) In the embodiment, the anti-counterfeit thread 30 is formed on one side of the short side portion of the sheet-like base material 20, but may be formed on other places. For example, depending on the data to be recorded, it is possible to make a paper on all the peripheral portions of the sheet-like substrate 20.
(2) In the embodiment, the anti-counterfeit thread 30 includes the hologram forming layer 32 and the colored layer 33, but may not include both or one as necessary.
(3) In the embodiment, the hologram forming layer 32 is formed on the anti-counterfeit thread 30, but may be formed at other locations. For example, it can be formed at a place other than the anti-counterfeit thread 30 on the sheet-like substrate 20.
(4) In the embodiment, the magnetic head 40 reads the security medium 10 one by one, but may read it by other methods. For example, a plurality of detection coil units 41 and excitation coil units 42 may be provided in the magnetic head, and a plurality of security media 10 may be read simultaneously.

It is a schematic diagram which shows the security medium of the Example by this invention. It is a figure which shows the security medium of the Example by this invention, and the magnetic head which reads it. It is a figure which shows the BH magnetization characteristic curve of an amorphous alloy material and a ferrite material. It is a figure which shows an example of the excitation and detection data of the excitation coil part of an Example by this invention, and a detection coil part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Security medium 20 Sheet-like base material 30 Anti-counterfeit thread 31 Amorphous ferromagnetic layer 32 Hologram formation layer 33 Colored layer 40 Magnetic head 41 Detection coil part

Claims (8)

And the sheet-shaped base material has a specific magnetization characteristics, has an amorphous ferromagnetic layer for storing magnetically the desired information, a plurality and a anti-counterfeit threads plowed into the base material sheet Bundle security media,
Comprising reading means for reading desired information and / or code patterns of the amorphous ferromagnetic layer from the side of the security medium;
A security medium reader characterized by the above. The security medium reader according to claim 1,
A code pattern is formed on the amorphous ferromagnetic layer of the anti-counterfeit thread of the security medium ;
A security medium reader characterized by the above. The security medium reader according to claim 2,
The code pattern of the security medium is substrate information and / or denomination information;
A security medium reader characterized by the above. In the security media reader according to any one of claims 1 to 3,
The anti-counterfeit thread of the security medium is engraved into a part or all of the peripheral edge of the sheet-like base material,
A security medium reader characterized by the above. In the security media reader according to any one of claims 1 to 4,
The amorphous ferromagnetic layer of the anti-counterfeit thread of the security medium is a thin film having a thickness of 500 to 5000 mm,
A security medium reader characterized by the above. In the security media reader according to any one of claims 1 to 5,
The anti-counterfeit thread of the security medium is incorporated so that at least a part is exposed from the sheet-like base material,
A security medium reader characterized by the above. The security media reader according to claim 6,
The anti-counterfeit thread of the security medium includes a hologram forming layer that forms a hologram on the amorphous ferromagnetic layer;
A security medium reader characterized by the above. The security media reader according to claim 6 or 7,
The anti-counterfeit thread of the security medium comprises a colored layer that conceals the amorphous ferromagnetic layer;
A security medium reader characterized by the above.

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