JP4946154B2 - 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 according to claim 1 is an amorphous ferromagnet which is formed on at least one surface of a sheet-like base material (20) and the sheet-like base material (20), has specific magnetization characteristics, and stores desired information by magnetism. A security means comprising: a plurality of security media including a body layer (31); and reading means for reading desired information and / or code patterns of the amorphous ferromagnetic layer from a side surface of the security media. It is a medium reader.

According to a second aspect of the present invention, in the security medium reading device according to the first aspect, a code pattern is formed on the amorphous ferromagnetic layer (31) of the security medium. It is.

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 amorphous ferromagnetic layer (31) of the security medium includes the sheet-like base material (31). 20) A security medium reading device characterized in that the security media reading device is formed on a part or the whole of the peripheral edge .

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 security medium has a thickness of 500 to 5000 mm. It is a security medium reader characterized by being a thin film .

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, the security medium forms a hologram on the amorphous ferromagnetic layer (31). A security medium reading device comprising a hologram forming layer (32) .

According to a seventh aspect of the present invention, in the security medium reading device according to any one of the first to sixth aspects, the security medium is a colored layer (33) that conceals the amorphous ferromagnetic layer (31). A security medium reading device.

As described above, the present invention has the following effects.
(1) Since the sheet-like base material is provided with an amorphous ferromagnetic layer on one side, desired information can be stored by specific magnetization characteristics, and forgery of the security medium can be prevented.
(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 amorphous ferromagnetic layer 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. it can.
(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 hologram forming layer is provided on the amorphous ferromagnetic layer, the security medium can be visually checked for authenticity, and security can be improved.
(7) Since the security medium includes the colored layer, the amorphous ferromagnetic layer 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.

  The object of the present invention is to provide a security medium and a security medium reader capable of performing security judgment with high security and easy and efficient authentication by providing an amorphous ferromagnetic layer on the periphery of a sheet-like substrate. To do.

Hereinafter, the present invention will be described in more detail with reference to the drawings and the like.
FIG. 1 is a schematic diagram showing a security medium according to an embodiment of the present invention. FIG. 1 (A) is a plan view, FIG. 1 (B) is a side view, and FIG. 1 (C) is FIG. 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 FIG. 1, the security medium 10 is a gift certificate (XX department store ticket, ¥ 5,000) having a forgery preventing function provided with a transfer body 30 on the surface of the sheet-like substrate 20.
The sheet-like base material 20 is a base material for the security medium 10 formed of high-quality paper.

  The transfer body 30 includes an amorphous ferromagnetic layer 31, a hologram forming layer 32, a colored layer 33, an adhesive layer 34 and a peeling protection layer 35, and is an aggregate of layers formed on the surface of the sheet-like substrate 20 by thermal transfer. The transfer body 30-1 is provided on the long side portion of the sheet-like substrate 20, and the transfer body 30-2 is provided on the short side portion. In addition, as needed, the site | part relevant to the transcription | transfer body 30-1 of a long side part attaches | subjects the code | symbol (-1) unified to the end of each site | part number, and also the transcription | transfer body 30- of a short side part. The part related to 2 is denoted by reference numeral (-2), and the description thereof is omitted as appropriate. For example, the long-side amorphous ferromagnetic layer 31 is labeled as an amorphous ferromagnetic layer 31-1 as necessary.

  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. Further, as shown in FIG. 1C, the amorphous ferromagnetic layer 31 has a code pattern formed by a demetalization method or the like, and the code pattern of the amorphous ferromagnetic layer 31-1 is a product of the security medium 10. Information on the type of ticket (XX department store ticket) is recorded, and information on the amount (¥ 5,000) of the gift certificate is recorded in the amorphous ferromagnetic layer 31-2.

  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.

As shown in FIG. 1, the hologram forming layer 32 is a layer in which a three-dimensional image 32A is recorded using a laser beam. By applying light, the three-dimensional image 32A can be reproduced, and an authenticity determination can be made visually. It is possible.
The colored layer 33 is a printed layer for concealing the amorphous ferromagnetic layer 31 from the outside. As shown in FIG. 1A, the stereoscopic images 32A-1, 32A- of the hologram forming layer 32 of the transfer body 30 are provided. A region other than 2 is concealed by the colored layer 33.
The adhesive layer 34 is a heat seal layer that melts when heated, and bonds the transfer body 30 to the sheet-like substrate 20.
The peeling protection layer 35 is a layer that protects the surface of the transfer body 30. Further, before the transfer body 30 is transferred to the sheet-like base material 20, a resin base material (not shown) is attached to the surface of the peeling protection layer 35, and the transfer base material 30 is transferred via the resin base material at the time of transfer. The transfer body 30 is heated and thermally transferred to the sheet-like base material 20. After the transfer, the resin base material is peeled off, and the peel protection layer 35 protects the surface of the transfer body 30.

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 with the direction of the transfer body 30 kept constant. 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 31-1 at the long side 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 in the magnetic flux generated from the amorphous ferromagnetic layer 31-1 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 31-1 of the plurality of security media 10 are sequentially detected and displayed on the display unit 44 in the order in which the detection results are detected. To do. Similarly, the amorphous ferromagnetic layer 31-2 at the short side is also detected and the detection result is displayed. 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 is provided with the amorphous ferromagnetic layer 31 on one side thereof, it is possible to store authentication information by specific magnetization characteristics and prevent forgery of the security medium 10. Can do.
(2) Since the amorphous ferromagnetic layer 31 is formed with the code pattern, it is possible to record the gift certificate information (XX department store ticket, ¥ 5,000) of the security medium 10.
(3) Since the amorphous ferromagnetic layer 31 is formed on a part or all of the peripheral portion of the sheet-like base material 20, the information for authenticity determination and the code pattern information are read from the side surface of the sheet-like base material 20. be able to.
(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 hologram forming layer 32 is provided on the amorphous ferromagnetic layer 31, the security medium 10 can make an authenticity determination by visual observation, and can improve security.
(6) Since the security medium 10 includes the colored layer 33, the amorphous ferromagnetic layer 31 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) Although the transfer body 30 is provided on the two sides of the long side portion and the short side portion of the sheet-like base material 20 in the embodiment, it may be provided at other locations. For example, according to the data to record, it can also provide in all the peripheral parts of the sheet-like base material 20. FIG.
(2) In the embodiment, the transfer body 30 includes the hologram forming layer 32 and the colored layer 33. However, if necessary, either or both of them may not be included.
(3) Although the hologram forming layer 32 is formed on the transfer body 30 in the embodiment, it may be formed at other locations. For example, it can be formed in a place other than the transfer body 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 Transfer body 31 Amorphous ferromagnetic layer 32 Hologram formation layer 33 Colored layer 40 Magnetic head 41 Detection coil part

Claims (7)

A plurality of security media including a sheet-like base material and an amorphous ferromagnetic layer that is formed on at least one surface of the sheet-like base material and has specific magnetization characteristics and stores desired information by magnetism ,
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 ,
The amorphous ferromagnetic layer of the security medium has a code pattern formed thereon,
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 amorphous ferromagnetic layer of the security medium is formed on a part or all of the peripheral edge of the sheet-like substrate;
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 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 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 medium reader according to any one of claims 1 to 6 ,
The security medium comprises a colored layer for concealing the amorphous ferromagnetic layer;
A security medium reader characterized by the above.

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