JPS5847530Y2 - magnetic recording medium - Google Patents
magnetic recording mediumInfo
- Publication number
- JPS5847530Y2 JPS5847530Y2 JP1979031385U JP3138579U JPS5847530Y2 JP S5847530 Y2 JPS5847530 Y2 JP S5847530Y2 JP 1979031385 U JP1979031385 U JP 1979031385U JP 3138579 U JP3138579 U JP 3138579U JP S5847530 Y2 JPS5847530 Y2 JP S5847530Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- pattern layer
- layer
- magnetic recording
- recording body
- 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
Links
Description
【考案の詳細な説明】
本考案は、磁気パターン層を有する磁気記録体に関する
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic recording medium having a magnetic pattern layer.
例えば、従来、銀行等で用いられているキャッシュカー
ドは保護層をもうけた磁気テープを基体に貼付したもの
であり、口座番号、暗証番号等がデータとして記録され
ている。For example, cash cards conventionally used in banks and the like have a magnetic tape with a protective layer attached to a base, and account numbers, passwords, etc. are recorded as data.
したがってこの磁気カードは一般の磁気テープにデータ
を磁気ヘッドで電気的に、または磁気転写で記録し基体
に貼付するだけで容易に複製乃至偽造されるという難点
を有している。Therefore, this magnetic card has the disadvantage that it can be easily copied or counterfeited simply by recording data on a general magnetic tape electrically with a magnetic head or by magnetic transfer and pasting it on a base.
本考案はこのような問題点に着目し、偽造、変造等を容
易に行えない磁気記録体を提供するものである。The present invention focuses on these problems and provides a magnetic recording medium that cannot be easily counterfeited or altered.
以下、本考案を図面を参照して説明する。Hereinafter, the present invention will be explained with reference to the drawings.
第１図は本考案の一実施例の磁気記録体の長手方向断面
図である。FIG. 1 is a longitudinal sectional view of a magnetic recording body according to an embodiment of the present invention.
図示のようにこの磁気記録体は保護層１、磁気パターン
層２、および磁性層３を順次積層して構成される。As shown in the figure, this magnetic recording body is constructed by sequentially laminating a protective layer 1, a magnetic pattern layer 2, and a magnetic layer 3.
第２図は本考案による磁気記録体の構造を説明するため
の拡大斜視図である。FIG. 2 is an enlarged perspective view for explaining the structure of the magnetic recording medium according to the present invention.
図に示すように磁気パターン層２は磁気記録体の長手方
向に対し４５度の磁性層の模様を形成させたものである
。As shown in the figure, the magnetic pattern layer 2 has a magnetic layer pattern formed at an angle of 45 degrees with respect to the longitudinal direction of the magnetic recording body.
第３図は本考案による磁気記録体の各層の磁場配向の関
係を示すための平面図である。FIG. 3 is a plan view showing the relationship between the magnetic field orientations of each layer of the magnetic recording medium according to the present invention.
本図において保護層は省略されている。The protective layer is omitted in this figure.
磁性層３は磁気記録体の長手方向に対し、磁場配向方向
矢印４に示されるように＋４５度の方向に磁場配向処理
を施こされて釦り、また磁気パターン層２は磁場配向方
向矢印７に示されるように一４５度の方向に磁場配向処
理を施こされている。The magnetic layer 3 is buttoned by being subjected to magnetic field orientation treatment in the direction of +45 degrees as shown by the magnetic field orientation direction arrow 4 with respect to the longitudinal direction of the magnetic recording body, and the magnetic pattern layer 2 is buttoned by magnetic field orientation processing in the direction of +45 degrees as shown by the magnetic field orientation direction arrow 7. As shown in the figure, magnetic field alignment treatment is applied in the direction of -45 degrees.
上述したような構成を有した磁気記録体の使用法の一例
を以下に示す。An example of how to use the magnetic recording medium having the above-described configuration will be shown below.
この磁気記録体を有する磁気カードを従来の磁気カード
と同様の方法で記録・再生を行なう。Recording and reproduction are performed on the magnetic card having this magnetic recording body in the same manner as with conventional magnetic cards.
第１図に示した如く、磁気記録体の厚さはどの部分も同
じであり、磁気パターン層２と磁性層３の残留磁束密度
Ｂｒを同じ値に設計すればこの磁気記録体の残留磁束φ
ｒはどの場所でも一定になる。As shown in FIG. 1, the thickness of the magnetic recording body is the same everywhere, and if the residual magnetic flux density Br of the magnetic pattern layer 2 and the magnetic layer 3 is designed to the same value, the residual magnetic flux φ of this magnetic recording body
r becomes constant everywhere.
したがってまた再生出力も一定となる。Therefore, the reproduction output is also constant.
データを読み取った後、磁気パターン層および磁性層が
飽和磁化するような磁界を与える。After reading the data, a magnetic field is applied to saturate the magnetic pattern layer and the magnetic layer.
飽和磁化した磁気記録体の磁化方向は磁気パターン層お
よび磁性層の磁場配向方向と一致する。The magnetization direction of the saturated magnetic recording body matches the magnetic field orientation direction of the magnetic pattern layer and the magnetic layer.
このように磁化された磁気ストラップを第４図に示すよ
うにギャップ部６が磁気ストライプ長手方向と＋４５度
の角度をもつ磁気ヘッド５で読み取る。The thus magnetized magnetic strap is read by a magnetic head 5 whose gap portion 6 forms an angle of +45 degrees with the longitudinal direction of the magnetic stripe, as shown in FIG.
磁性層の磁化方向はへラドギャップに対し最大のアジマ
ス損失を生じ、磁気パターン層のアジマス損失は０とな
る。The magnetization direction of the magnetic layer causes the maximum azimuth loss with respect to the Herad gap, and the azimuth loss of the magnetic pattern layer becomes zero.
このため磁気パターン層のパターンにしたがって出力が
検出され、磁気パターン層の判別が可能となる。Therefore, the output is detected according to the pattern of the magnetic pattern layer, making it possible to identify the magnetic pattern layer.
上記のような読取り機構をもった装置に、従来の磁気パ
ターン層を有しない磁気カードを使用しても磁気パター
ンにしたがった出力が検出されないからデータは読み取
れても、このカードは不合格と判定される。Even if a conventional magnetic card without a magnetic pattern layer is used in a device with the reading mechanism described above, no output according to the magnetic pattern will be detected, so even if the data can be read, the card will be judged as a failure. be done.
一方、本考案の磁気記録体よりなる磁気カードを従来の
記録再生方式によって読み取っても問題のないことは明
らかであり、従来磁気カードとの互換性を有している。On the other hand, it is clear that there is no problem even if a magnetic card made of the magnetic recording medium of the present invention is read by a conventional recording/reproducing method, and is compatible with conventional magnetic cards.
次に、本考案の磁気記録体を形成する具体的実施例を示
す。Next, a specific example of forming the magnetic recording body of the present invention will be shown.
２５μポリエチレンテレフタレートベースに対し、シリ
コンＫＳ７７４（信越化学製）に硬化剤ＰＬ−３（信越
化学製）０．５％添加した剥離剤をバーコーターで塗布
したのち温度８０℃の乾燥炉に３０分間保持して十分硬
化させ、さらに保護コート剤としてＶＡＧＨ（ＵＣＣ製
）にジメチルシリコン３部を添加したものを酢酸エチル
に溶解し、グラビアコーターで１μの厚さに塗布する。A release agent consisting of 0.5% hardening agent PL-3 (Shin-Etsu Chemical) added to silicone KS774 (Shin-Etsu Chemical) was applied to the 25μ polyethylene terephthalate base using a bar coater, and then kept in a drying oven at a temperature of 80°C for 30 minutes. Further, as a protective coating agent, VAGH (manufactured by UCC) to which 3 parts of dimethyl silicone has been added is dissolved in ethyl acetate and applied to a thickness of 1 μm using a gravure coater.
エポキシ樹脂を主バインダーとして、磁性材ＭＲＭ−４
００（戸田工業製）をボールミルにて分散させた磁気塗
料をグラビアコーターにて磁気パターン層として所定の
パターンに印刷し、対向磁石により４５度の方向に磁場
配向を施こす。Magnetic material MRM-4 using epoxy resin as the main binder
00 (manufactured by Toda Kogyo Co., Ltd.) in a ball mill is printed in a predetermined pattern as a magnetic pattern layer using a gravure coater, and magnetic field orientation is applied in a direction of 45 degrees using opposing magnets.
これを１００℃の乾燥炉でｆ分熱硬化させた後、ＶＡＧ
Ｈを主バインダーとし、磁性材ＭＲＭ−４００をボール
ミルにて分散させた磁気塗料をナイフェツジコーターに
て磁悸層として塗布し磁気パターン層の磁場配向方向と
直角に磁場配向を施こす。After curing this for f minutes in a drying oven at 100°C, VAG
A magnetic paint containing H as the main binder and magnetic material MRM-400 dispersed in a ball mill is applied as a magnetic layer using a knife coater, and magnetic field orientation is applied at right angles to the magnetic field orientation direction of the magnetic pattern layer.
さらにこれに接着剤Ｐ−９９Ｆ（東洋インキ製）をバー
コーターにて塗布、乾燥させる。Further, adhesive P-99F (manufactured by Toyo Ink) is applied to this using a bar coater and dried.
こうして得られた磁気テープを６．５ｍｍ幅にスリット
し塩ビ基板に熱ロールで転与し、２５μポリエチレンテ
レフタレートベースを剥離させ、本考案の磁気記録体を
もつ磁気カードを得る。The magnetic tape thus obtained is slit into a width of 6.5 mm and transferred onto a PVC substrate using a hot roll, and the 25 μm polyethylene terephthalate base is peeled off to obtain a magnetic card having the magnetic recording body of the present invention.
以上述べたように、本考案の磁気記録体を有する磁気カ
ードに対し、一般の磁気テープにデータを記録して偽造
することは著しく困難である。As described above, it is extremely difficult to forge a magnetic card having the magnetic recording body of the present invention by recording data on a general magnetic tape.
また、この磁気パターン層のパターンは任意のものが容
易にできるので、例えばＡ銀行とＢ銀行の磁気パターン
が異なっていれば互換性がないのは勿論、Ａ銀行カード
を変造してＢ銀行カードとして使用することも著しく困
難となる。Moreover, since the pattern of this magnetic pattern layer can be easily made into any arbitrary pattern, for example, if the magnetic patterns of Bank A and Bank B are different, it goes without saying that they are not compatible. It is also extremely difficult to use it as a
このように本考案の磁気記録体は、従来磁気カードに用
いられている磁気記録体と互換性をもち、さらに偽造、
変造等を容易に行なえない磁気媒体を提供することが可
能である。In this way, the magnetic recording material of the present invention is compatible with the magnetic recording material conventionally used in magnetic cards, and is also capable of preventing counterfeiting and
It is possible to provide a magnetic medium that cannot be easily tampered with.
更に、本考案によれば、不連続磁気パターン層２は、通
常の印刷に用いる版により形成でき、従って、印刷の版
を任意に選ぶことによってさまざまなパターンを容易に
形成できる。Furthermore, according to the present invention, the discontinuous magnetic pattern layer 2 can be formed using a printing plate used for ordinary printing, and therefore, various patterns can be easily formed by arbitrarily selecting a printing plate.
そして、このパターンを磁気パターンとするには、もう
一方の磁性層３と磁気配向方向を異ならせればよく、単
なる対向磁石を用いて行うことができ、従って、種々な
磁気パターン層を有した磁気記録体を非常に容易に提供
できる。In order to make this pattern a magnetic pattern, it is only necessary to make the magnetic orientation direction different from that of the other magnetic layer 3, and this can be done by simply using opposing magnets. Records can be provided very easily.
第１図は本考案の一実施例としての磁気記録体の長手方
向断面図、第２図は本考案の磁気記録体の構造を説明す
るための拡大斜視図、第３図は本考案の磁気記録体の各
層の磁場配向の関係を示すための平面図、第４図は本考
案の磁気記録体の読み取り実施例を示す概略図である。
１・・・保護層、２・・・磁気パターン層、３−・・磁
性層、４・・・磁場配向方向、５・・・磁気ヘッド、６
・・・ギャップ部、７・・・磁場配向方向。FIG. 1 is a longitudinal sectional view of a magnetic recording body as an embodiment of the present invention, FIG. 2 is an enlarged perspective view for explaining the structure of the magnetic recording body of the present invention, and FIG. 3 is a magnetic recording body of the present invention. FIG. 4 is a plan view showing the relationship between the magnetic field orientations of each layer of the recording medium, and FIG. 4 is a schematic diagram showing a reading embodiment of the magnetic recording medium of the present invention. DESCRIPTION OF SYMBOLS 1... Protective layer, 2... Magnetic pattern layer, 3-... Magnetic layer, 4... Magnetic field orientation direction, 5... Magnetic head, 6
... Gap portion, 7... Magnetic field orientation direction.
Claims (3)
磁場配向された不連続磁気パターン層と、該磁気パター
ン層の磁気ヘッド接触側の面を残して該磁気パターン層
を取り囲むようにして付与後前記所定の方向とは異なる
所定の方向に磁場配向された連続磁性層とを備えること
を特徴とする磁気記録体。(1) A discontinuous magnetic pattern layer that is magnetically oriented in a predetermined direction after printing in a predetermined discontinuous pattern, and a discontinuous magnetic pattern layer that surrounds the magnetic pattern layer while leaving the surface of the magnetic pattern layer that contacts the magnetic head. A magnetic recording body comprising: a continuous magnetic layer magnetically oriented in a predetermined direction different from the predetermined direction;
度の方向に磁場配向され、前記磁気パターン層は、これ
と直角をなす方向に磁場配向されている実用新案登録請
求の範囲第（１）項記載の磁気記録体。(2) The magnetic layer has a diameter of 45 mm in the longitudinal direction of the magnetic recording body.
The magnetic recording body according to claim 1, which is a registered utility model, wherein the magnetic pattern layer is oriented by a magnetic field in a direction perpendicular to the magnetic pattern layer.
対し４５度の方向に一定の繰り返し模様を形成している
実用新案登録請求の範囲第（１）項または第（２）項記
載の磁気記録体。(3) The magnetic pattern layer forms a constant repeating pattern in a direction of 45 degrees with respect to the length direction of the magnetic recording body, as described in claim (1) or (2) of the registered utility model claim. magnetic recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979031385U JPS5847530Y2 (en) | 1979-03-12 | 1979-03-12 | magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979031385U JPS5847530Y2 (en) | 1979-03-12 | 1979-03-12 | magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55132734U JPS55132734U (en) | 1980-09-19 |
| JPS5847530Y2 true JPS5847530Y2 (en) | 1983-10-29 |
Family
ID=28882861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979031385U Expired JPS5847530Y2 (en) | 1979-03-12 | 1979-03-12 | magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5847530Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07118079B2 (en) * | 1986-12-18 | 1995-12-18 | 共同印刷株式会社 | Magnetic recording medium |
| JPH0818470B2 (en) * | 1987-08-20 | 1996-02-28 | 日立マクセル株式会社 | Magnetic card and recording / reproducing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5079311A (en) * | 1973-10-23 | 1975-06-27 | ||
| JPS5256510A (en) * | 1975-11-05 | 1977-05-10 | Mitsubishi Heavy Ind Ltd | Magnetic recording material |
| JPS5392110A (en) * | 1976-12-06 | 1978-08-12 | Emi Ltd | Material layer having detectable surface pattern |
| JPS5462812A (en) * | 1977-10-15 | 1979-05-21 | Emi Ltd | Method of fabricating member having magnetically and visually detectable construction |
-
1979
- 1979-03-12 JP JP1979031385U patent/JPS5847530Y2/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5079311A (en) * | 1973-10-23 | 1975-06-27 | ||
| JPS5256510A (en) * | 1975-11-05 | 1977-05-10 | Mitsubishi Heavy Ind Ltd | Magnetic recording material |
| JPS5392110A (en) * | 1976-12-06 | 1978-08-12 | Emi Ltd | Material layer having detectable surface pattern |
| JPS5462812A (en) * | 1977-10-15 | 1979-05-21 | Emi Ltd | Method of fabricating member having magnetically and visually detectable construction |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55132734U (en) | 1980-09-19 |
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