JPH02101601A - Method for discriminating authenticity of magnetic card - Google Patents

Method for discriminating authenticity of magnetic card

Info

Publication number
JPH02101601A
JPH02101601A JP25233688A JP25233688A JPH02101601A JP H02101601 A JPH02101601 A JP H02101601A JP 25233688 A JP25233688 A JP 25233688A JP 25233688 A JP25233688 A JP 25233688A JP H02101601 A JPH02101601 A JP H02101601A
Authority
JP
Japan
Prior art keywords
magnetic
magnetic recording
card
recording
shield layer
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.)
Pending
Application number
JP25233688A
Other languages
Japanese (ja)
Inventor
Terumi Hirano
輝美 平野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toppan Printing Co Ltd filed Critical Toppan Printing Co Ltd
Priority to JP25233688A priority Critical patent/JPH02101601A/en
Publication of JPH02101601A publication Critical patent/JPH02101601A/en
Pending legal-status Critical Current

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  • Recording Or Reproducing By Magnetic Means (AREA)

Abstract

PURPOSE:To discriminate the truth or falsehood of the magnetic card by providing a means for magnetically saturating a magnetic shielding layer to eliminate the magnetic power thereof and a switching means which turns on and off this means to the magnetic head of a device for recording/reproducing information to the magnetic layer for recording of the magnetic card. CONSTITUTION:The magnetic recording card is formed by applying a magnetic material, which consists of a magnetic material, such as gammaFe2O3, having 200 to 3,000 oersted coercive force, and a binder, such as polyurethane, on a base material 1 for the magnetic recording card, which is 100 to 20 to 2,000mum thick and consists of plastics, such as vinyl chloride and PET, to form the magnetic layer 2, applying magnetic ink consisting of a soft magnetic material, such as 'Permalloy(R)', having 5 to 80 oersted coercive force and a binder, such as polyurethane, thereon to form the magnetic shielding layer 3 having 5 to 20mum thickness. The on/off function of the magnetic field for saturating the magnetic shielding layer is added to a magnetic recording and reproducing device by utilizing whether magnetic recording and reproducing can be made or not by the presence or absence of the magnetic field for saturating the magnetic shielding layer, by which the truth or falsehood of the magnetic recording card is discriminated.

Description

【発明の詳細な説明】 〈産業上の利用分野〉 本発明は、キャッシュカード、クレジットカード、プリ
ペイドカード等、カードの表面に磁気記録部が形成され
、さらにその上に軟磁性体を含む磁気シールド層を有す
る磁気記録カードの真偽を判別する方法に関する。
[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a magnetic recording part formed on the surface of a card such as a cash card, credit card, or prepaid card, and a magnetic shield containing a soft magnetic material thereon. The present invention relates to a method for determining authenticity of a magnetic recording card having a layer.

〈従来の技術〉 磁気記録カードのセキュリティ機能として、第1図に示
されるように塩化ビニル、PET等の磁気記録カード基
材(1)に磁気記録部(2)および、軟磁性体よりなる
磁気シールド層(3)を塗布法あるいは接着法により形
成したものが用いられている0M1気記録部に記録され
た情報は磁気シールド層(3)によって秘匿されている
。磁気記録カード上の情報は第2図に示されるように磁
気記録部(2)を構成する磁性体の磁化によって保持さ
れており、特殊な磁気ヘッド(4)を用いて磁気シール
ド層を無力化し、情報を記録・再生する構成となってい
る。
<Prior art> As shown in Fig. 1, as a security function of a magnetic recording card, a magnetic recording card base (1) made of vinyl chloride, PET, etc. has a magnetic recording part (2) and a magnetic recording part (2) made of a soft magnetic material. The information recorded in the 0M1 recording section, in which the shield layer (3) is formed by a coating method or an adhesive method, is hidden by the magnetic shield layer (3). As shown in Figure 2, the information on the magnetic recording card is retained by the magnetization of the magnetic material that makes up the magnetic recording section (2), and a special magnetic head (4) is used to neutralize the magnetic shield layer. , and is configured to record and reproduce information.

〈発明が解決しようとする課題〉 上記従来のセキュリティ機能を持つ磁気記録カードは、
その記録された情報が一般の磁気ヘッドによって読み出
し困難であることによって記録情報が秘匿されている。
<Problem to be solved by the invention> The above-mentioned conventional magnetic recording card with a security function has the following problems:
The recorded information is kept secret because it is difficult to read with a general magnetic head.

しかし、この記録情報を磁気シールド層を持たない磁気
記録カードに対して複製、偽造したならば、従来の特殊
な磁気ヘッドにより磁気シールド層を持たない偽造磁気
記録カードに対して磁気シールド層を持つ磁気記録カー
ドと同様に記録・再生が可能である。
However, if this recorded information is copied or counterfeited on a magnetic recording card that does not have a magnetic shield layer, then a conventional special magnetic head will be used to create a counterfeit magnetic recording card that does not have a magnetic shield layer. It can be recorded and played back in the same way as a magnetic recording card.

これによって不正に得た磁気記録情報をもとに、磁気シ
ールド層を持たない磁気記録カードによって磁気シール
ド層を持つ磁気記録カードを容易に偽造することが可能
である。
As a result, it is possible to easily forge a magnetic recording card with a magnetic shield layer by using a magnetic recording card without a magnetic shield layer, based on magnetic recording information obtained illegally.

また、従来の磁気記録・再生装置では磁気シールド層を
持たない偽造磁気記録カードを判別することは困難であ
る。
Furthermore, it is difficult for conventional magnetic recording/reproducing devices to identify counterfeit magnetic recording cards that do not have a magnetic shield layer.

く課題を解決するための手段〉 上記課題を解決すべくなされた本発明は、軟磁性体によ
る磁気シールド層を持つ磁気記録カードについて、磁気
シールド層の存在を判別することによって、偽造磁気記
録カードを判別する。
Means for Solving the Problems> The present invention, which was made to solve the above problems, detects counterfeit magnetic recording cards by determining the presence of a magnetic shield layer in a magnetic recording card having a magnetic shield layer made of a soft magnetic material. Determine.

従来の磁気シールド層を持つ磁気記録カード用特殊ヘッ
ドを用いた磁気記録・再生装置では、磁気シールド層の
有無によらずに磁気記録・再生が可能である。このため
偽造磁気記録カードを判別することが不可能であり、偽
造磁気記録カードによって不正にサービスを得ることが
出来る。
In a magnetic recording/reproducing device using a conventional special head for magnetic recording cards having a magnetic shield layer, magnetic recording/reproducing is possible regardless of the presence or absence of the magnetic shield layer. For this reason, it is impossible to identify a counterfeit magnetic recording card, and services can be fraudulently obtained using a counterfeit magnetic recording card.

本発明によって従来用いられている、磁気シールド層を
持つ磁気記録カード用特殊ヘッドに、磁気シールド層を
無力化させる機能を0N10FFすることによって磁気
シールド層の有無を判別できる。すなわち、磁気シール
ド層を無力化した状態で磁気記録・再生可能であれば磁
気シールド層を持つ正当な磁気記録カードであり、磁気
シールド層を無力化せずに磁気記録・再生が可能であれ
ば磁気シールド層を持たない偽造磁気記録カードである
と判断できる。
According to the present invention, the presence or absence of a magnetic shield layer can be determined by setting the function of disabling the magnetic shield layer to ON10FF in a conventional special head for a magnetic recording card having a magnetic shield layer. In other words, if magnetic recording/reproduction is possible with the magnetic shield layer disabled, then it is a legitimate magnetic recording card with a magnetic shield layer, and if magnetic recording/reproduction is possible without disabling the magnetic shield layer, then it is a valid magnetic recording card. It can be determined that this is a counterfeit magnetic recording card that does not have a magnetic shield layer.

〈作用〉 本発明の磁気記録カードは第1図に示す如く、100〜
2000 u mの塩化ビニル、PE7等プラスチック
スからなる磁気記録カード基材(1)上にTFe103
、BaO−6FezOz等の200〜3000エルステ
ッドの保磁力を有する磁性体とポリウレタン等のバイン
ダーからなる磁性塗料を塗布し、厚さ5〜20μmの磁
性111(2)を形成する。さらに、その上に第2層目
としてMn−Zn−F e r r i t e、 N
1−Zn−Ferrite、パー70イ等保磁力5〜8
0エルステンドの軟磁性体とポリウレタン等のバインダ
ーからなる磁性インキによって厚さ5〜20μmの磁気
シールド層(3)を形成する。これを磁気記録カード(
A)とする。
<Function> As shown in FIG. 1, the magnetic recording card of the present invention has a
TFe103 is placed on a magnetic recording card base material (1) made of plastics such as 2000 um vinyl chloride and PE7.
, BaO-6FezOz or the like having a coercive force of 200 to 3000 oersteds, and a binder such as polyurethane, a magnetic paint is applied to form a magnetic 111 (2) having a thickness of 5 to 20 μm. Furthermore, as a second layer on top of that, Mn-Zn-Ferrite, N
1-Zn-Ferrite, par 70, coercive force 5-8
A magnetic shielding layer (3) having a thickness of 5 to 20 μm is formed using a magnetic ink made of a soft magnetic material of 0 oerstend and a binder such as polyurethane. Add this to a magnetic recording card (
A).

次に100〜2000μmの塩化ビニル、PE7等プラ
スチックスからなる磁気記録カード基材(1)上に1−
FezO,、BaO−6FezOi等の200〜300
0エルステッドの保磁力を有する磁性体とポリウレタン
等のバインダーからなる磁性塗料を塗布し、厚さ5〜2
0μmの磁性層(2)を形成する。これを磁気記録カー
ド(B)とする。
Next, 1-
200-300 of FezO, BaO-6FezOi, etc.
A magnetic paint consisting of a magnetic material with a coercive force of 0 oersted and a binder such as polyurethane is applied, and a thickness of 5 to 2
A magnetic layer (2) of 0 μm is formed. This is called a magnetic recording card (B).

従来用いられている磁気シールド層(3)を持つ磁気記
録カード用特殊ヘッドによって、(A)(B)それぞれ
の磁気記録カードに対し磁気記録・再生を行なうにあた
り、磁気シールド層(3)の存在と磁気記録・再生の可
否は第1表の結果となる。磁気シールド層は特殊磁気ヘ
ッドによって発生する磁気シールド層飽和用磁界によっ
て無力化する。
The presence of the magnetic shield layer (3) is important when performing magnetic recording and reproduction on each of the magnetic recording cards (A) and (B) using a conventionally used special head for magnetic recording cards that has a magnetic shield layer (3). Table 1 shows the results of whether or not magnetic recording/reproduction is possible. The magnetic shield layer is neutralized by a magnetic field for saturating the magnetic shield layer generated by a special magnetic head.

第1表 磁気シールド層の存在と磁気記録・再生の可否 注、O;磁気記録・再生可能 ×;磁気記録・再生不可能 第1表より、磁気シールド層飽和用磁界の印加によらず
磁気記録・再生が可能であるなら、偽造磁気記録カード
である。
Table 1 Presence of magnetic shield layer and availability of magnetic recording/reproduction Note: O; Magnetic recording/reproduction possible ×; Magnetic recording/reproduction not possible From Table 1, magnetic recording is possible without applying a magnetic field for saturation of the magnetic shield layer. - If it can be played, it is a counterfeit magnetic recording card.

磁気シールド層飽和用磁界の有無による磁気記録・再生
の可否を利用し、現在用いられている磁気記録・再生装
置に磁気シールド層飽和用磁界の0N10FF機能を付
加することにより、磁気記録カードの判別を行なうこと
ができる。
By using whether or not magnetic recording/reproduction is possible depending on the presence or absence of a magnetic field for saturating the magnetic shield layer, we can identify magnetic recording cards by adding a 0N10FF function for saturating the magnetic shield layer to the currently used magnetic recording/reproducing device. can be done.

〈実施例〉 188μmのPETからなる磁気記録カード基材(1)
上に保磁力2750エルステツドのバリウムフェライト
磁性粉とポリウレタン樹脂および硬化剤のバインダーか
らなる磁性塗料を塗布し、厚さ7μmのストライプ状磁
性層(2)を形成した。
<Example> Magnetic recording card base material (1) made of 188 μm PET
A magnetic paint consisting of barium ferrite magnetic powder with a coercive force of 2750 oersted, a polyurethane resin, and a hardening agent as a binder was applied thereon to form a striped magnetic layer (2) with a thickness of 7 μm.

さらに、その上に第2層目として保磁力65エルステツ
ドのMn−Zn−フェライトとポリウレタン樹脂のバイ
ンダーからなる磁性インキによって厚さ20IImの磁
気シールド層(3)を形成した。
Furthermore, as a second layer, a magnetic shield layer (3) having a thickness of 20 IIm was formed using a magnetic ink made of Mn-Zn-ferrite having a coercive force of 65 oersted and a binder of polyurethane resin.

これを磁気記録カード(A)とする。This is called a magnetic recording card (A).

188μmのPETからなる磁気記録カード基材(1)
上に保磁力2750エルステツドのバリウムフェライト
磁性粉とポリウレタン樹脂および硬化剤のバインダーか
らなる磁性塗料を塗布し、厚さ7μmのストライブ状磁
性層(2)を形成した。
Magnetic recording card base material (1) made of 188 μm PET
A magnetic paint consisting of barium ferrite magnetic powder with a coercive force of 2750 oersted, a polyurethane resin, and a hardening agent as a binder was applied thereon to form a striped magnetic layer (2) with a thickness of 7 μm.

これを磁気記録カード(B)とする。This is called a magnetic recording card (B).

従来用いられている磁気シールド層を持つ磁気記録カー
ド用特殊ヘッドによって、(A)(B)それぞれの磁気
記録カードに対し磁気記録・再生を行なった。
Magnetic recording and reproduction were performed on each of the magnetic recording cards (A) and (B) using a conventionally used special head for magnetic recording cards having a magnetic shield layer.

゛第3図に磁気シールド層飽和用磁気ヘッドがON状態
における磁気記録カード(A)(B)の磁気記録再生波
形を示す、r111気記録カード(A)(B)両者とも
磁気記録内容を再生することが可能である。
゛Figure 3 shows the magnetic recording and reproducing waveforms of the magnetic recording cards (A) and (B) when the magnetic head for magnetic shield layer saturation is in the ON state. Both R111 recording cards (A) and (B) reproduce the magnetically recorded contents. It is possible to do so.

第4図に磁気シールド層飽和用磁気ヘッドがOFF状態
における磁気記録カード(A)(B)の磁気記録波形お
よび再生波形を示す、磁気シールド層を持たない偽造磁
気記録カードは磁気記録・再生可能であるのに対して、
磁気シールド層を持つ磁気記録カードは磁気記録・再生
共に不可能である。
Figure 4 shows the magnetic recording waveforms and reproduction waveforms of the magnetic recording cards (A) and (B) when the magnetic head for magnetic shield layer saturation is in the OFF state. Counterfeit magnetic recording cards without a magnetic shield layer are capable of magnetic recording and reproduction. Whereas,
A magnetic recording card with a magnetic shield layer cannot perform both magnetic recording and reproduction.

〈発明の効果〉 本発明により磁気シールド層を持つ磁気記録カードの磁
気シールド層の存無を容易に判断できる。
<Effects of the Invention> According to the present invention, the presence or absence of a magnetic shield layer of a magnetic recording card having a magnetic shield layer can be easily determined.

本発明による磁気記録カード磁気記録・再生装置により
磁気シールド層を持たない偽造磁気記録カードを容易に
判別することが出来る0本発明は、現在用いられている
磁気シールド層を持つ磁気記録カード用磁気記録・再生
装置に、わずかな改修を加えることによって実現可能で
ある。
The magnetic recording card magnetic recording/reproducing device according to the present invention makes it possible to easily identify counterfeit magnetic recording cards that do not have a magnetic shield layer. This can be achieved by making slight modifications to the recording/playback device.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は磁気記録カードの断面図であり、第2図は磁気
記録カードの磁気記録状態を表わす断面図であり、第3
図は特殊磁気ヘッドによる磁気シールド層無力化状態の
磁気記録カード(A)および(B)の再生出力波形であ
り、第4図は特殊磁気ヘッドにより磁気シールド層を無
力化していない状態の磁気記録カード(A)および(B
)の再生出力波形である。 1・・・磁気記録カード基材 2・・・磁気記録部 3・・・磁気シールド層 4・・・特殊磁気ヘッド 第1図 第2図 特   許    出    願    人凸版印刷株
式会社 代表者 鈴木和夫 AI 第3図 第 図
FIG. 1 is a cross-sectional view of a magnetic recording card, FIG. 2 is a cross-sectional view showing the magnetic recording state of the magnetic recording card, and FIG.
The figure shows the reproduction output waveforms of magnetic recording cards (A) and (B) with the magnetic shield layer disabled by the special magnetic head, and Figure 4 shows the magnetic recording with the magnetic shield layer not disabled by the special magnetic head. Cards (A) and (B
) is the reproduced output waveform. 1...Magnetic recording card base material 2...Magnetic recording section 3...Magnetic shield layer 4...Special magnetic head Figure 1 Figure 2 Patent application Toppan Printing Co., Ltd. Representative Kazuo Suzuki AI Figure 3

Claims (1)

【特許請求の範囲】[Claims] 基板上に、磁気記録が可能な保磁力を有する単数の、あ
るいは複数の記録用磁性層を備え、少なくとも上層の記
録用磁性層の上に小保磁力の軟磁性材料より成る磁気シ
ールド層を有する磁気カードの真偽を判別する方法にお
いて、該磁気カードの記録用磁性層に情報を記録、また
は再生するための装置の磁気ヘッドが磁気シールド層を
磁気的に飽和させて無力化させる手段を有し、かつ該手
段をオンオフするための切り換え手段を有することによ
り磁気シールド層の存在の可否を判定して該磁気カード
の真偽を判別する方法。
A single or plural recording magnetic layer having a coercive force capable of magnetic recording is provided on the substrate, and a magnetic shield layer made of a soft magnetic material having a small coercive force is provided on at least the upper recording magnetic layer. In a method for determining the authenticity of a magnetic card, the magnetic head of a device for recording or reproducing information in the recording magnetic layer of the magnetic card has a means for magnetically saturating the magnetic shield layer and rendering it ineffective. and a switching means for turning the means on and off, thereby determining the presence or absence of a magnetic shield layer and determining the authenticity of the magnetic card.
JP25233688A 1988-10-06 1988-10-06 Method for discriminating authenticity of magnetic card Pending JPH02101601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25233688A JPH02101601A (en) 1988-10-06 1988-10-06 Method for discriminating authenticity of magnetic card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25233688A JPH02101601A (en) 1988-10-06 1988-10-06 Method for discriminating authenticity of magnetic card

Publications (1)

Publication Number Publication Date
JPH02101601A true JPH02101601A (en) 1990-04-13

Family

ID=17235851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25233688A Pending JPH02101601A (en) 1988-10-06 1988-10-06 Method for discriminating authenticity of magnetic card

Country Status (1)

Country Link
JP (1) JPH02101601A (en)

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