JP2949636B2 - How to determine the authenticity of a card - Google Patents
How to determine the authenticity of a cardInfo
- Publication number
- JP2949636B2 JP2949636B2 JP2145433A JP14543390A JP2949636B2 JP 2949636 B2 JP2949636 B2 JP 2949636B2 JP 2145433 A JP2145433 A JP 2145433A JP 14543390 A JP14543390 A JP 14543390A JP 2949636 B2 JP2949636 B2 JP 2949636B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- card
- authenticity
- signal recording
- magnetic signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は一般に磁気カード上に保磁力を部分的に塗布
し，この有無により真偽を判定するオレンジカードおよ
び，メトロカード等のカードの真偽判別を行う方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention generally applies a coercive force partially to a magnetic card, and determines the authenticity of the card based on the presence or absence of the coercive force. The present invention relates to a method for performing false identification.
［従来の技術］ 磁気カードやICカード等のカードが幅広く利用される
に伴い，カードの改造や偽カードの使用を防止するた
め，カードの偽造防止技術の重要性が高まっている。[Prior Art] With the widespread use of cards such as magnetic cards and IC cards, the importance of card forgery prevention technology is increasing in order to prevent card remodeling and use of fake cards.
従来，例えば，磁気カードの偽造防止技術には，必要
な情報の磁気記録の他に磁気バーコード等を加えて，こ
の磁気バーコードを判定して偽造されたものかどうかを
判別できるようにしたものや，磁気カードに記録される
記録信号の波形を複雑にしたり，記録信号を変調波を用
いて記録したりすることにより，偽造を防止するものが
ある。Conventionally, for example, in a technology for preventing forgery of a magnetic card, a magnetic barcode or the like is added in addition to the magnetic recording of necessary information, and the magnetic barcode is determined so that it is possible to determine whether the magnetic barcode is forged. In some cases, forgery is prevented by complicating the waveform of the recording signal recorded on the magnetic card or recording the recording signal using a modulated wave.
磁気カードに対して，これらの方法の併合により偽造
防止効果を高めることができる。Forgery prevention effects can be enhanced for magnetic cards by combining these methods.
［発明が解決しようとする課題］ しかしながら，上述の磁気バーコードを用いる方法，
記録された記録信号の波形を複雑にしたり，記録信号を
変調波を用いて記録する方法は，記録が磁気信号である
以上は，磁気読取り装置により読取りが可能であった
り，偽造を完全に防止することは不可能であった。[Problems to be Solved by the Invention] However, the method using the above-described magnetic barcode,
The method of complicating the waveform of a recorded recording signal or recording the recording signal using a modulated wave can be read by a magnetic reader as long as the recording is a magnetic signal, and completely prevents forgery. It was impossible to do.
そこで，本発明の技術的課題は，偽造防止効果が高め
られ，かつ容易に偽造防止を行うことができるカードの
真偽判別を行う方法を提供することにある。Therefore, a technical object of the present invention is to provide a method for discriminating the authenticity of a card in which the forgery prevention effect is enhanced and the forgery prevention can be easily performed.
［課題を解決するための手段］ 本発明によれば、カードの面上に形成された少なくと
も5kOeを越える保磁力を有する真偽判別用磁気信号記録
部を備え、前記真偽判別用磁気信号記録部は、前記カー
ドの磁気記録を行う記録層上に前記カードの側辺に沿っ
て帯状のバーコード状に形成されている前記カードの前
記真偽判別用磁気信号記録部に所定の高磁場で予め着磁
しておき、前記真偽判別用磁気信号記録部を前記所定の
高磁場以下の磁界で消磁し、前記真偽判別用磁気信号記
録部に残留する磁気信号を読み取ることで真偽を判別す
ることを特徴とするカードの真偽判別を行う方法が得ら
れる。According to the present invention, there is provided a true / false discrimination magnetic signal recording unit having a coercive force exceeding at least 5 kOe formed on a surface of a card. The part is formed with a predetermined high magnetic field on the magnetic signal recording part for authenticity discrimination of the card, which is formed in a band-like bar code shape along a side of the card on a recording layer for performing magnetic recording of the card. It is magnetized in advance, demagnetizes the magnetic signal recording unit for authenticity discrimination with a magnetic field equal to or less than the predetermined high magnetic field, and reads the magnetic signal remaining in the magnetic signal recording unit for authenticity discrimination to determine the authenticity. Thus, a method of determining the authenticity of a card, which is characterized by performing the determination, is obtained.
即ち，本発明は，カード表面又は紙，プラッスチック
ス等の一般基材上に高保磁力材料（Hc＝5kOeを越えるも
の）を印刷又は塗布することにより，従来のオレンジカ
ード，メトロカード等の低保磁力材料とは異なった材料
を用い，新しい真偽判別用磁気信号記録部を備えている
カードである。That is, the present invention prints or applies a high coercive force material (having a Hc of more than 5 kOe) on the surface of a card or on a general base material such as paper or plastics, thereby forming a low coercive material such as a conventional orange card or metro card. The card is made of a material different from the magnetic material and has a new magnetic signal recording unit for authenticity determination.
また，本発明では前記カードを用いて，高保磁力の真
偽判別用磁気信号記録部に,20kOe以上の高磁場で磁気バ
ーコードを形成し，一旦この記録部を３〜4kOeの磁場で
消磁し，この消磁されない真偽判別用磁気信号記録部の
磁気バーコードを読み取ることで真偽を判別する方法で
ある。Further, in the present invention, a magnetic barcode is formed in the magnetic signal recording unit for discriminating authenticity having a high coercive force with a high magnetic field of 20 kOe or more using the card, and this recording unit is once demagnetized with a magnetic field of 3 to 4 kOe. This is a method of determining the authenticity by reading the magnetic bar code of the authenticity identification magnetic signal recording unit which is not demagnetized.
尚，本発明において，用いられる高保磁力材料として
は,SmCo,Srフェライト,Nd・Fe・Ｂ等が使用できるが，
これらに限定されるものではない。In the present invention, as the high coercive force material used, SmCo, Sr ferrite, NdFeB, etc. can be used.
It is not limited to these.
［作 用］ 本発明の真偽判別手段を備えたカードにおいては，バ
ーコード形状に塗布または印刷された高保磁力材料から
なる真偽判別用磁気信号記録部が形成されている。本発
明のカードの真偽判別方法では，このカードを用いて，
記録された真偽判別用磁気信号記録部のバーコードを消
磁した後に，残存するバーコード消磁状態を判別するこ
とにより，カードの真偽を判別することができる。[Operation] In the card provided with the authenticity discriminating means of the present invention, a magnetic signal recording section for authenticity discrimination made of a high coercive force material applied or printed in a barcode shape is formed. In the method for determining the authenticity of a card of the present invention, this card is used to
After degaussing the recorded bar code in the authenticity discriminating magnetic signal recording unit, the remaining bar code demagnetized state is discriminated, whereby the authenticity of the card can be discriminated.
［実施例］ 以下に本発明の実施例を図面を用いて説明する。Embodiment An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の実施例に係るカードを示す断面図で
ある。FIG. 1 is a sectional view showing a card according to an embodiment of the present invention.
第１図において，紙またはプラスチック等の非磁性の
支持材上に，保磁力300〜3000Oeのγ−Fe2O3又はBaフェ
ライトを塗布し、記録層２とし，この記録層２上にSrフ
ェライトの粉末を顔料とするインキを第２図（ａ）のよ
うに，厚さ５〜10μｍ程度に印刷して,5kOeを越える保
磁力Hcを備えた真偽判別用磁気信号記録部11を形成して
いる。In FIG. 1, γ-Fe 2 O 3 or Ba ferrite having a coercive force of 300 to 3000 Oe is applied on a non-magnetic support material such as paper or plastic to form a recording layer 2. As shown in FIG. 2 (a), an ink using the powder of (1) as a pigment was printed to a thickness of about 5 to 10 μm to form a magnetic signal recording section 11 for authenticity determination having a coercive force Hc exceeding 5 kOe. ing.
この時の印刷は，シルク印刷で300メッシュで行い，
この時のインキ成分は，第１表の通りである。The printing at this time is performed by silk printing with 300 mesh,
The ink components at this time are as shown in Table 1.
本発明の実施例に係るカードを使用する際は，このイ
ンキで印刷されたカード10において,20kOeの磁場を発生
される磁気ヘッドにて，この部分にエンコード（着磁）
する。通常の磁気記録は，真偽判別用磁気信号記録部11
以外の記録層２に対して行われる。 When the card according to the embodiment of the present invention is used, the card 10 printed with this ink is encoded (magnetized) on this part by a magnetic head that generates a magnetic field of 20 kOe.
I do. Normal magnetic recording is performed by a magnetic signal recording unit 11 for authenticity determination.
This is performed for the other recording layers 2.
一方，このカードの使用時においては,3〜4kOeの磁場
で消磁し，このエンコード内容が残っている事を確認す
ることにより，真偽を判定する。On the other hand, when this card is used, it is demagnetized by a magnetic field of 3 to 4 kOe, and the authenticity is determined by confirming that the encoded content remains.
第２図（ｂ）は，第１図（ａ）のカードの他の例を示
す図である。第２図（ｂ）において，磁気カード10′の
一面の一辺近傍に，この一方に沿って帯状に第１表に示
されるものと同様のインキが印刷され，真偽判別用磁気
信号記録部11′が形成されている。FIG. 2 (b) is a diagram showing another example of the card of FIG. 1 (a). In FIG. 2B, ink similar to that shown in Table 1 is printed along one side of one side of the magnetic card 10 'in the vicinity of one side of the magnetic card 10'. 'Is formed.
第２図（ｂ）の磁気カードも第２図（ａ）の例と同様
にして，カードの真偽が判別される。The authenticity of the magnetic card shown in FIG. 2B is determined in the same manner as in the example shown in FIG. 2A.
第３図は本発明の実施例に係る着磁回路を示す図であ
る。FIG. 3 is a diagram showing a magnetizing circuit according to an embodiment of the present invention.
第３図において，着磁回路は,Fe系の磁性材料からな
るヨーク31と，このヨーク31に施された巻線32からなる
着磁ヘッド30とを備えている。In FIG. 3, the magnetizing circuit includes a yoke 31 made of a Fe-based magnetic material and a magnetizing head 30 made of a winding 32 applied to the yoke 31.
磁気カード10に設けられた真偽判別用磁気信号記録部
11には，コイルに直流電流I0を流し，バーコード保磁力
の約３倍の磁場を発生させることにより，着磁するもの
である。Magnetic signal recording unit for authenticity determination provided on the magnetic card 10
The 11, a direct current flows I 0 to the coil, by generating approximately three times the magnetic field of the bar code coercivity is for magnetizing.
第４図（ａ）及び第４図（ｂ）は本発明の磁気カード
のバーコードを読み出す読出し回路の具体的構成を示す
図である。FIGS. 4 (a) and 4 (b) are diagrams showing a specific configuration of a reading circuit for reading a bar code of the magnetic card of the present invention.
第４図（ａ）および（ｂ）において，読みだし回路
は，第３図の磁気ヘッド30と同じ構成であるが，その電
流値I1が異なる。In Figure 4 (a) and (b), reading circuit has the same architecture as the magnetic head 30 of FIG. 3, the current value I 1 is different.
第４図（ａ）において，記録された磁気カード10は，
第３図の磁気ヘッド30と同様に，ヘッドI0より小さな電
流I1を流して，磁場３〜4kOeで消磁する。バーコードが
消磁ヘッドを通過しても高磁力用であるので，バーコー
ドが消磁されないで残存する。（一般的な磁場に保磁力
では消磁するレベルの電流I1＜I0である。）。In FIG. 4 (a), the recorded magnetic card 10
Similar to the magnetic head 30 of FIG. 3, by passing a small current I 1 from the head I 0, to demagnetization magnetic field 3～4KOe. Even if the barcode passes through the degaussing head, the barcode remains for the high magnetic force without being demagnetized. (Current I 1 <I 0 at a level that demagnetizes with a coercive force in a general magnetic field.)
第４図（ｂ）において，第４図（ａ）で消磁された磁
気カード10のバーコードは，磁気ヘッド40により読み出
される。In FIG. 4 (b), the bar code of the magnetic card 10 degaussed in FIG. 4 (a) is read by the magnetic head 40.
第４図（ｂ）において，真偽判別装置は，消磁ヘッド
30を備えた消磁ヘッド駆動部，磁気ヘッド41,およびコ
イル42を備えた磁気ヘッド40,増幅器33,判定回路34とを
備えている。磁気カードリーダに第４図（ｂ）の装置が
組み込まれた場合において，磁気カード10に予め備えら
れたカード種別等の磁気記録情報は，図示しない磁気記
録読取り装置によって，読み取られる。In FIG. 4 (b), the authenticity discriminating device is a degaussing head.
A demagnetizing head drive unit having 30, a magnetic head 41, a magnetic head 40 having a coil 42, an amplifier 33, and a determination circuit 34 are provided. When the device shown in FIG. 4B is incorporated in the magnetic card reader, magnetic recording information such as a card type provided in the magnetic card 10 is read by a magnetic recording reader (not shown).
磁気カード10は，真偽判別用磁気信号記録部11にバー
コードが形成されている。磁気ヘッド30により第４図
（ａ）に示すように消磁されなかった高保磁力に記録さ
れた残存するバーコードが読み取られ増幅器33により増
幅され，バーコード信号fBを判定部34に出力する。判定
部34はメモリを内蔵し，予め記録された基準値frと増幅
器33からのバーコード信号fBが一致した場合において，
一致信号feを出力し，不一致の場合に不一致信号fnを出
力する。In the magnetic card 10, a bar code is formed in the magnetic signal recording unit 11 for authenticity determination. As shown in FIG. 4 (a), the remaining barcode recorded at a high coercive force which has not been demagnetized is read by the magnetic head 30 and amplified by the amplifier 33, and the barcode signal fB is output to the determination unit. The determination unit 34 has a built-in memory, and when the reference value fr recorded in advance matches the barcode signal fB from the amplifier 33,
Outputs the coincidence signal fe, and outputs the non-coincidence signal fn when they do not coincide.
一致信号fe又は不一致信号fnにより，例えば，図示し
ない警報を発する警報回路に信号が出力される。According to the coincidence signal fe or the non-coincidence signal fn, for example, a signal is output to an alarm circuit that issues an alarm (not shown).
実施例のカードにおいては，真偽判別用磁気信号記録
部11を繰り返し，消磁を行なっても，その出力は，低減
することはない。In the card of the embodiment, even if the magnetic signal recording unit 11 for authenticity discrimination is repeated and degaussed, the output is not reduced.
通常の磁気カードでは，消磁後，磁気ヘッドからの出
力信号が発生しないので，一致信号feは出力されない
か，必ず不一致信号が出力される。In a normal magnetic card, since no output signal is generated from the magnetic head after demagnetization, the coincidence signal fe is not output or a non-coincidence signal is always output.
尚，本実施例においては，着，消磁ヘッド30および磁
気ヘッド40は夫々別のものを使用したが,3種とも同じ構
成のものを使用しても，また，一方を他方に兼用しても
その効果においては，全く変わるところはない。In this embodiment, the wearing, the degaussing head 30 and the magnetic head 40 are different from each other. However, the three types may have the same configuration, or one may be used for the other. There is no change in its effect.
［発明の効果］ 以上説明したように，本発明によれば，容易に製造で
き，かつ偽造防止ができるカードの真偽判別を行う方法
を提供することができる。[Effects of the Invention] As described above, according to the present invention, it is possible to provide a method of determining the authenticity of a card that can be easily manufactured and that can prevent forgery.
第１図は本発明の実施例に係るカードの構造を示す部分
断面図、第２図（ａ）は第１図のカードの一例を示す
図，第２図（ｂ）は，第１図のカードの他の例を示す
図，第３図は本発明の実施例に係る着磁回路を示す図で
ある。第４図（ａ）及び第４図（ｂ）は本発明のカード
のバーコードの読出し回路の具体的構成を示す図であ
る。 図中,1……支持基材,2……記録層,3……印刷面,10,10′
……磁気カード,11,11′……真偽判別用磁気信号記録
部,30……磁気ヘッド,31……ヨーク,32……コイル,33…
…増幅器,34……判定回路,35……消磁ヘッド駆動部,40
……磁気ヘッド,41……ヨーク,42……コイル。FIG. 1 is a partial sectional view showing a structure of a card according to an embodiment of the present invention, FIG. 2 (a) is a diagram showing an example of the card of FIG. 1, and FIG. 2 (b) is a diagram of FIG. FIG. 3 is a view showing another example of a card, and FIG. 3 is a view showing a magnetizing circuit according to an embodiment of the present invention. FIGS. 4 (a) and 4 (b) are diagrams showing a specific configuration of a bar code reading circuit of the card of the present invention. In the figure, 1 ... Support base material, 2 ... Recording layer, 3 ... Printed surface, 10,10 '
…… Magnetic card, 11, 11 ′… Magnetic signal recording unit for authenticity discrimination, 30… Magnetic head, 31… Yoke, 32… Coil, 33…
... Amplifier, 34 ... Judgment circuit, 35 ... Degaussing head drive unit, 40
... magnetic head, 41 ... yoke, 42 ... coil.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) B42D 15/10 551 G11B 5/80 G06K 19/06 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 6 , DB name) B42D 15/10 551 G11B 5/80 G06K 19/06
Claims (1)
を越える保磁力を有する真偽判別用磁気信号記録部を備
え、前記真偽判別用磁気信号記録部は、前記カードの磁
気記録を行う記録層上に前記カードの側辺に沿って帯状
のバーコード状に形成されている前記カードの前記真偽
判別用磁気信号記録部に所定の高磁場で予め着磁してお
き、前記真偽判別用磁気信号記録部を前記所定の高磁場
以下の磁界で消磁し、前記真偽判別用磁気信号記録部に
残留する磁気信号を読み取ることで真偽を判別すること
を特徴とするカードの真偽判別を行う方法。At least 5 kOe formed on the face of the card
A true / false discriminating magnetic signal recording unit having a coercive force exceeding the coercive force, wherein the authenticity discriminating magnetic signal recording unit includes a band-shaped bar along a side of the card on a recording layer for performing magnetic recording of the card. The magnetic signal recording section for authenticity determination of the card formed in a code shape is magnetized in advance with a predetermined high magnetic field, and the magnetic signal recording section for authenticity determination is a magnetic field less than the predetermined high magnetic field. A method for discriminating the authenticity of a card, wherein the discrimination is performed by reading a magnetic signal remaining in the authenticity discriminating magnetic signal recording unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2145433A JP2949636B2 (en) | 1990-06-05 | 1990-06-05 | How to determine the authenticity of a card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2145433A JP2949636B2 (en) | 1990-06-05 | 1990-06-05 | How to determine the authenticity of a card |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0439097A JPH0439097A (en) | 1992-02-10 |
| JP2949636B2 true JP2949636B2 (en) | 1999-09-20 |
Family
ID=15385135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2145433A Expired - Lifetime JP2949636B2 (en) | 1990-06-05 | 1990-06-05 | How to determine the authenticity of a card |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2949636B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2626858B2 (en) * | 1992-05-26 | 1997-07-02 | 株式会社巴川製紙所 | Manufacturing method of magnetic recording medium |
| US5451759A (en) * | 1993-06-24 | 1995-09-19 | Nhk Spring Co., Ltd. | Using high-permeability magnetic elements randomly scattered in the objects |
| EP0696779B1 (en) * | 1994-07-11 | 2002-10-02 | Toppan Printing Co., Ltd. | Data recording medium |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61145727A (en) * | 1984-12-19 | 1986-07-03 | Dainippon Printing Co Ltd | Cards having magnetic recording medium and its recording method |
| JPS6233325A (en) * | 1985-08-06 | 1987-02-13 | Tomoegawa Paper Co Ltd | Heat sensitive magnetic recording medium |
| JPS63213117A (en) * | 1987-02-28 | 1988-09-06 | Hitachi Maxell Ltd | Magnetic card |
-
1990
- 1990-06-05 JP JP2145433A patent/JP2949636B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0439097A (en) | 1992-02-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR0176732B1 (en) | Magnetic recording medium and method for manufacturing the same | |
| JPH0916734A (en) | Read-only magnetic security badge and read-only magnetic security system using it | |
| JP2949636B2 (en) | How to determine the authenticity of a card | |
| CA1326906C (en) | Magnetic recording medium | |
| JP2820844B2 (en) | How to prevent unauthorized use of magnetic cards | |
| EP0094775B1 (en) | A method of preparing and reading information which is permananently recorded on a magnetic layer | |
| EP0756272A2 (en) | Magnetic medium having permanent magnetic feature | |
| JPH07107738B2 (en) | Magnetic recording medium | |
| JP3051644B2 (en) | Manufacturing method of magnetic recording medium | |
| JP3384695B2 (en) | Magnetic recording media | |
| JP2005125630A (en) | Magnetic card and judging method of its authenticity | |
| JP2794214B2 (en) | Magnetic card | |
| JP2660966B2 (en) | Magnetic recording medium authenticity discrimination method | |
| JP2000311222A (en) | Magnetic recording medium and genuineness deciding method | |
| JP3501537B2 (en) | An object whose authenticity is to be checked and a method of checking the authenticity of this object | |
| JP3760031B2 (en) | Magnetic recording medium and method for manufacturing the same | |
| JP3311029B2 (en) | Magnetic card reader / writer | |
| JPH09128508A (en) | Magnetic recording medium and magnetic recording and reproducing method | |
| JP2660966C (en) | ||
| JPH07302462A (en) | Magnetic card | |
| JPH0863742A (en) | Information recording medium and its reading decision method | |
| JPH03248895A (en) | Magnetic medium | |
| JPH1049862A (en) | Magnetic recording medium, and its recording and reproducing method | |
| JPH0619120U (en) | Magnetic card | |
| JPH10105664A (en) | Method and system for discriminating forged magnetic recording medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090709 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090709 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100709 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term |