JPH0512068Y2 - - Google Patents
Info
- Publication number
- JPH0512068Y2 JPH0512068Y2 JP1985027772U JP2777285U JPH0512068Y2 JP H0512068 Y2 JPH0512068 Y2 JP H0512068Y2 JP 1985027772 U JP1985027772 U JP 1985027772U JP 2777285 U JP2777285 U JP 2777285U JP H0512068 Y2 JPH0512068 Y2 JP H0512068Y2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- recording layer
- magnetic
- cards
- 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.)
- Expired - Lifetime
Links
- 239000010410 layer Substances 0.000 claims description 40
- 239000000696 magnetic material Substances 0.000 claims description 13
- 239000011241 protective layer Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 239000003973 paint Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 239000004831 Hot glue Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000007756 gravure coating Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000915 polyvinyl chloride Polymers 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 229920006026 co-polymeric resin Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920002160 Celluloid Polymers 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- MBHRHUJRKGNOKX-UHFFFAOYSA-N [(4,6-diamino-1,3,5-triazin-2-yl)amino]methanol Chemical compound NC1=NC(N)=NC(NCO)=N1 MBHRHUJRKGNOKX-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920003225 polyurethane elastomer Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Credit Cards Or The Like (AREA)
- Paints Or Removers (AREA)
- Magnetic Record Carriers (AREA)
Description
考案の目的 Purpose of invention
本考案は、偽造が困難であつて、かつ真偽の判
別が容易な、磁気記録媒体をもつカード類に関す
る。
The present invention relates to cards having a magnetic recording medium that are difficult to forge and easy to distinguish between genuine and false cards.
近年、磁気記録媒体をもつカード類の普及は著
しく、キヤツシユカード、銀行通帳をはじめ、ク
レジツトカード、乗車券、定期券など、広い範囲
で利用されている。こうした磁気カード類の普及
につれて、磁気カード類を偽造または複製して悪
用する者があらわれ、その防止とカード類の真偽
を適確に判別する技術が要求されている。
BACKGROUND ART In recent years, cards with magnetic recording media have become extremely popular and are used in a wide range of applications, including cash cards, bank passbooks, credit cards, train tickets, and commuter passes. As magnetic cards become more widespread, there are people who misuse magnetic cards by forging or duplicating them, and there is a need for technology to prevent this and to accurately determine the authenticity of cards.
本考案の目的は、上記の要求にこたえ、偽造を
効果的に防止するとともに、偽造されても真偽を
容易に判別し、偽カードを排除できるような磁気
記録媒体をもつカード類を提供することにある。
考案の構成
The purpose of the present invention is to meet the above requirements and provide cards with a magnetic recording medium that can effectively prevent counterfeiting, and even if they are counterfeited, the authenticity can be easily determined and counterfeit cards can be eliminated. There is a particular thing. Structure of the idea
本考案の磁気記録媒体をもつカード類は、第１
図に示すようなカード類の基材１の上に磁気記録
層２を有するカード類において、第２図および第
３図に示すように、磁気記録層２が、同じ磁性材
料で形成した上部磁気記録層２Ａと、その下に配
置した下部磁気記録層２Ｂとからなり、上部磁気
記録層２Ａが、データの読みとり方向と平行な方
向に磁性材料を配向したものであり、下部磁気記
録層２Ｂが、一部はデータの読みとり方向と平行
に磁性材料を配向し、一部はそれに対し傾いた方
向に磁性材料を配向したものであることを特徴と
する。
The cards having the magnetic recording medium of the present invention are
In cards having a magnetic recording layer 2 on a card base material 1 as shown in the figure, the magnetic recording layer 2 is formed of an upper magnetic layer made of the same magnetic material as shown in FIGS. 2 and 3. It consists of a recording layer 2A and a lower magnetic recording layer 2B arranged below it, the upper magnetic recording layer 2A having magnetic material oriented in a direction parallel to the data reading direction, and the lower magnetic recording layer 2B Some of the magnetic materials are oriented parallel to the data reading direction, and some of the magnetic materials are oriented in a direction oblique to the data reading direction.
【作用】
このカードに書き込んだデータの読みとりは、
読みとり方向に垂直なギヤツプをもつ磁気ヘツド
と、読みとり方向に対して傾いた方向つまり傾い
た配向方向に対して垂直なギヤツプをもつ磁気ヘ
ツドとの、組み合わせを用いる。前者による読み
とりは、第４図に示すような配向方向が読みとり
方向と平行でない部分の出力が低下した出力波形
を与え、後者による読みとりには第５図に示すよ
うな、第４図とは逆にこの部分の出力が高い波形
が得られる。この２種の出力波形が得られたもの
を正規のカードとし、そうでないものを偽のカー
ドとして排除する。傾いた配向の方向は、読みと
り方向に対する傾きが大きいほど出力波高が低く
なるが、普通は45度程度が適当である。[Operation] Reading the data written to this card is as follows:
A combination of a magnetic head with a gap perpendicular to the reading direction and a magnetic head with a gap perpendicular to the direction tilted to the reading direction, that is, the tilted alignment direction is used. Reading by the former method gives an output waveform in which the output is reduced in the portion where the orientation direction is not parallel to the reading direction, as shown in Figure 4, and reading by the latter gives an output waveform that is opposite to that shown in Figure 4, as shown in Figure 5. A waveform with high output in this part is obtained. Cards that provide these two types of output waveforms are considered to be genuine cards, and those that do not are rejected as fake cards. Regarding the direction of the tilted orientation, the larger the tilt with respect to the reading direction, the lower the output wave height will be, but normally about 45 degrees is appropriate.
本考案で「カード類」とは、キヤツシユカード
やクレジツトカードに限らず乗車券や回数券、預
金通帳を含む意味である。
磁気記録層の磁性材料としては、常用のコバル
ト被着ガンマ酸化鉄そのほか、任意のものを、適
宜のバインダーとともに使用する。
なお磁気記録層の耐摩耗性の必要とする場合
は、その上に保護層３を設ける。
磁気記録層を設けるには、磁性材料を含有する
インキの印刷によるのがよい。すなわち第２図に
示すように、配向方向が読みとり方向と平行な上
部磁気記録層２Ａをつくるには、ベタ印刷し読み
とり方向と平行な磁場の中で配向処理し乾燥すれ
ばよい。次に、第３図に示すように、配向方向が
部分的に読みとり方向に対し傾いている下部磁気
記録層２Ｂをつくるには、パターン印刷で一部分
を印刷し読みとり方向と平行な磁場の中で配向処
理し乾燥後、もう一方の部分を印刷し、読みとり
方向に対して傾いている磁場の中で配向処理し
て、乾燥する。あるいは、ベタ印刷を行なつて平
行な方向の磁場の中で配向したのち、乾燥に先立
つて所望の部分だけ傾いた磁場の中で配向しても
よい。傾いた方向に配向させるには、電磁石を用
いパルスを発生すればよい。
このような磁気記録層を基材に合体させる手段
の代表的なものは、以下に実施例を示す熱転写で
あるが、もちろんそのほかの手段によつてもよ
い。
In the present invention, "cards" is not limited to cash cards and credit cards, but also includes train tickets, coupon tickets, and bankbooks. As the magnetic material for the magnetic recording layer, the commonly used cobalt-coated gamma iron oxide and other arbitrary materials can be used together with a suitable binder. In addition, if the wear resistance of the magnetic recording layer is required, a protective layer 3 is provided thereon. The magnetic recording layer is preferably provided by printing with ink containing a magnetic material. That is, as shown in FIG. 2, in order to produce the upper magnetic recording layer 2A whose orientation direction is parallel to the reading direction, it is sufficient to perform solid printing, perform an orientation treatment in a magnetic field parallel to the reading direction, and dry it. Next, as shown in FIG. 3, in order to create a lower magnetic recording layer 2B whose orientation direction is partially inclined with respect to the reading direction, a portion is printed by pattern printing and placed in a magnetic field parallel to the reading direction. After orientation treatment and drying, the other part is printed, orientation treatment is performed in a magnetic field tilted with respect to the reading direction, and then dried. Alternatively, after solid printing is performed and oriented in a magnetic field in a parallel direction, a desired portion may be oriented in a tilted magnetic field prior to drying. In order to orient it in an inclined direction, a pulse may be generated using an electromagnet. A typical means for combining such a magnetic recording layer with a base material is thermal transfer, which will be shown in the following embodiments, but of course other means may also be used.
【実施例】
下記の原料を配合して（「部」はいずれも重量
部）、剥離剤を調製した。
酢酸セルロース樹脂（大日本セルロイド） ５部
メチロールメラミン系熱硬化性樹脂（日本カー
バイト） １部
メチルエチルケトン 50部
メチルアルコール 25部
トルエン 25部
厚さ25μのポリエステルのベースフイルム上
に、上記の剥離剤をグラビアコートし厚さ1μの
剥離層を形成した。
次に、下記の原料を配合して、保護層用塗料を
調製した。
ポリビニルブチラール樹脂「エスレツクBX」
（清水化学） ３部
湿気硬化型ウレタン樹脂「オレスターM95−
50A」（三井東圧） ３部
メチルエチルケトン 30部
トルエン 30部
酢酸エチル 30部
上記の保護層用塗料を剥離層上にグラビアコー
トし、厚さ1μの保護層を形成した。
下記の原料を配合して、磁性塗料を調製した。
Co被着γ−Fe2O3「Ｘ−6000」（チタン工業）
75部
部分ケン化塩化ビニル／酢酸ビニル共重合樹脂
「ビニライトVAGH」（UCC） 10部
ポリウレタンエラストマー樹脂「サンブレン
IB114B」（三洋化成工業） 25部
線状飽和ポリエステル樹脂「バイロン
RV53SS」（東洋紡） 15部
イソプロピルアルコール 50部
メチルエチルケトン 50部
トルエン 50部
イソシアネート系硬化剤「ATマイテツクNY
−220A」（三菱化成） ３部
上記の磁性材料をグラビアコート法により保護
層上に全面コーテイングし、読みとり方向と平行
な磁場の中で配向処理し乾燥して上部磁気記録層
２Ａを形成した。その上に、同じ磁性塗料をグラ
ビアコート法によるパターンコーテイングで一部
分をコートし、読みとり方向と平行な磁場の中で
配向処理し乾燥後、残りの部分をコートし、読み
とり方向に対して傾いた磁場の中で配向処理して
乾燥して、下部磁気記録層２Ｂを形成した。
下記の原料を配合して、ホツトメルト接着剤塗
料を調製した。
塩化ビニル／酢酸ビニル共重合樹脂「デンカラ
ツク721」（電気化学） １部
アクリル樹脂 ２部
トルエン ８部
酢酸エチル ８部
上記のホツトメルト接着剤塗料を磁気記録層上
に、グラビアコートし、厚さ10μのホツトメルト
接着層を形成した。
以上の順序で形成した転写シートを6.5mm幅に
スリツトし、カード基材に用いる厚さ100μのポ
リ塩化ビニルシートの所定の位置に熱転写し、ベ
ースフイルムであるポリエステルフイルムを剥離
した。こうして用意した磁気記録層つきのオーバ
ーシートに、ポリ塩化ビニルのセンターコア（厚
さ560μ）と、やはりポリ塩化ビニルのオーバー
シート（厚さ100μ）とをこの順に重ね、150℃、
25Kg／cm2の条件で加熱加圧して積層し、仕上げ、
打抜きを行ない、縦86mm、幅54mm、厚さ0.76mmの
カードを得た。
なお、保護層と磁気記録層の間に着色層を設け
てもよいし、着色層と磁気記録層の間に、蒸着層
を設けてもよい。
考案の効果
本考案の磁気記録媒体をもつカードは、外部か
らは磁気記録層が２層構造になつていることがわ
からないから、偽造困難である。記録した情報を
在来の構造の磁気記録カードにコピーして前記し
た２種の磁気ヘツドの組み合わせでデータを読み
とつても、第４図および第５図に示すような出力
波形があらわれないから、偽造品であることが直
ちにわかり、排除できる。
上部磁気記録層と下部磁気記録層とを同じ磁性
材料で形成するので、カードの製造が容易であ
る。[Example] A release agent was prepared by blending the following raw materials (all parts are by weight). Cellulose acetate resin (Dainippon Celluloid) 5 parts Methylolmelamine thermosetting resin (Nippon Carbide) 1 part Methyl ethyl ketone 50 parts Methyl alcohol 25 parts Toluene 25 parts Apply the above release agent on a 25μ thick polyester base film. Gravure coating was performed to form a release layer with a thickness of 1μ. Next, the following raw materials were blended to prepare a coating for a protective layer. Polyvinyl butyral resin “ESLETSUQ BX”
(Shimizu Chemical) 3-part moisture-curing urethane resin "Orestar M95-
50A'' (Mitsui Toatsu) 3 parts methyl ethyl ketone 30 parts toluene 30 parts ethyl acetate 30 parts The above paint for the protective layer was gravure coated on the release layer to form a protective layer with a thickness of 1 μm. A magnetic paint was prepared by blending the following raw materials. Co-adhered γ-Fe 2 O 3 “X-6000” (Titan Kogyo)
75 parts Partially saponified vinyl chloride/vinyl acetate copolymer resin "Vinyrite VAGH" (UCC) 10 parts Polyurethane elastomer resin "Sunbrene"
IB114B” (Sanyo Chemical Industries) 25 parts linear saturated polyester resin “Vylon
RV53SS” (Toyobo) 15 parts Isopropyl alcohol 50 parts Methyl ethyl ketone 50 parts Toluene 50 parts Isocyanate hardening agent “AT Mitek NY
-220A'' (Mitsubishi Kasei) Part 3 The above magnetic material was coated on the entire surface of the protective layer by gravure coating, oriented in a magnetic field parallel to the reading direction, and dried to form the upper magnetic recording layer 2A. On top of that, a part of the same magnetic paint is coated with pattern coating using the gravure coating method, and after it is oriented in a magnetic field parallel to the reading direction and dried, the remaining part is coated, and the remaining part is coated in a magnetic field tilted to the reading direction. The lower magnetic recording layer 2B was formed by orientation treatment and drying in a vacuum chamber. A hot melt adhesive paint was prepared by blending the following raw materials. Vinyl chloride/vinyl acetate copolymer resin "Denkaratsuku 721" (Electrochemical) 1 part acrylic resin 2 parts toluene 8 parts ethyl acetate 8 parts The above hot melt adhesive paint was gravure coated on the magnetic recording layer, and a 10 μm thick layer was prepared. A hot melt adhesive layer was formed. The transfer sheet formed in the above order was slit to a width of 6.5 mm and thermally transferred to a predetermined position on a 100 μm thick polyvinyl chloride sheet used as a card base material, and the polyester film serving as the base film was peeled off. A polyvinyl chloride center core (thickness: 560 μm) and a polyvinyl chloride oversheet (thickness: 100 μm) were layered in this order on the oversheet with the magnetic recording layer prepared in this way, and heated at 150°C.
Laminated under heat and pressure under conditions of 25Kg/ cm2 , finished,
A card with a length of 86 mm, a width of 54 mm, and a thickness of 0.76 mm was obtained by punching. Note that a colored layer may be provided between the protective layer and the magnetic recording layer, or a vapor deposited layer may be provided between the colored layer and the magnetic recording layer. Effects of the invention Cards with the magnetic recording medium of the invention are difficult to counterfeit because it is not obvious from the outside that the magnetic recording layer has a two-layer structure. Even if the recorded information is copied to a magnetic recording card with a conventional structure and the data is read using a combination of the two types of magnetic heads described above, the output waveforms shown in Figures 4 and 5 do not appear. , it is immediately obvious that the product is a counterfeit product, and it can be eliminated. Since the upper magnetic recording layer and the lower magnetic recording layer are made of the same magnetic material, the card is easy to manufacture.
第１図は、本考案の磁気記録媒体をもつカード
類の構造を示す拡大断面図である。第２図および
第３図は、本考案のカード類の、それぞれ第１図
−断面および−断面における磁気記録層
の磁性材料の配向の方向を示す平面図である。第
４図および第５図は、このカードに記録された情
報を読みとつたときの、出力信号の波形パターン
を概念的にあらわした図である。
１……基材、２……磁気記録層、２Ａ……上部
磁気記録層、２Ｂ……下部磁気記録層、３……保
護層。
FIG. 1 is an enlarged sectional view showing the structure of a card having a magnetic recording medium of the present invention. 2 and 3 are plan views showing the direction of orientation of the magnetic material of the magnetic recording layer in the cross-section and the cross-section of FIG. 1, respectively, of the cards of the present invention. FIGS. 4 and 5 are diagrams conceptually showing waveform patterns of output signals when information recorded on this card is read. DESCRIPTION OF SYMBOLS 1... Base material, 2... Magnetic recording layer, 2A... Upper magnetic recording layer, 2B... Lower magnetic recording layer, 3... Protective layer.
Claims (1)
において、磁気記録層２が、同じ磁性材料で形
成した上部磁気記録層２Ａと、その下に配置し
た下部磁気記録層２Ｂとからなり、上部磁気記
録層２Ａが、データの読みとり方向と平行な方
向に磁性材料を配向したものであり、下部磁気
記録層２Ｂが、一部はデータの読みとり方向と
平行に磁性材料を配向し、一部はそれに対し傾
いた方向に磁性材料を配向したものであること
を特徴とする磁気記録媒体をもつカード類。 (2) 磁気記録層２の上に保護層３を有する実用新
案登録請求の範囲第１項の磁気記録媒体をもつ
カード類。[Claims for Utility Model Registration] (1) In cards having a magnetic recording layer 2 on a base material 1, the magnetic recording layer 2 is arranged below an upper magnetic recording layer 2A formed of the same magnetic material. The upper magnetic recording layer 2A has a magnetic material oriented in a direction parallel to the data reading direction, and the lower magnetic recording layer 2B has a part oriented in the data reading direction. Cards having a magnetic recording medium characterized in that magnetic materials are oriented parallel to each other, and some magnetic materials are oriented in an inclined direction. (2) Cards having a magnetic recording medium according to claim 1 of the utility model registration claim, which has a protective layer 3 on a magnetic recording layer 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985027772U JPH0512068Y2 (en) | 1985-02-27 | 1985-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985027772U JPH0512068Y2 (en) | 1985-02-27 | 1985-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61143869U JPS61143869U (en) | 1986-09-05 |
| JPH0512068Y2 true JPH0512068Y2 (en) | 1993-03-26 |
Family
ID=30525030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985027772U Expired - Lifetime JPH0512068Y2 (en) | 1985-02-27 | 1985-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0512068Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5165605A (en) * | 1974-10-16 | 1976-06-07 | Emi Varian Ltd | |
| JPS5256510A (en) * | 1975-11-05 | 1977-05-10 | Mitsubishi Heavy Ind Ltd | Magnetic recording material |
| JPS6027771A (en) * | 1983-07-27 | 1985-02-12 | Masayuki Iwata | Air bubble-entrained water vapor generator |
-
1985
- 1985-02-27 JP JP1985027772U patent/JPH0512068Y2/ja not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5165605A (en) * | 1974-10-16 | 1976-06-07 | Emi Varian Ltd | |
| JPS5256510A (en) * | 1975-11-05 | 1977-05-10 | Mitsubishi Heavy Ind Ltd | Magnetic recording material |
| JPS6027771A (en) * | 1983-07-27 | 1985-02-12 | Masayuki Iwata | Air bubble-entrained water vapor generator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61143869U (en) | 1986-09-05 |
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