JPH029041A - Device for grounding rotary drum - Google Patents
Device for grounding rotary drumInfo
- Publication number
- JPH029041A JPH029041A JP63159941A JP15994188A JPH029041A JP H029041 A JPH029041 A JP H029041A JP 63159941 A JP63159941 A JP 63159941A JP 15994188 A JP15994188 A JP 15994188A JP H029041 A JPH029041 A JP H029041A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- fixed
- rotating drum
- attached
- shaft
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
Abstract
Description
に産業上の利用分野舅
本発明はＶＴＲ等に用いられるヘッドドラム装（発明の
概要）
ねじりコイルばねを利用し、このねじりコイルばねの基
端部を回転ドラムの被取付は部に巻付けて固定するとと
もに、このねじりばねの先端側に接触子を取付け、固定
軸のボス部の外周面に上記接触子を圧着させることによ
って回転ドラムのアースをとるようにしたものであって
、コンパクトでしかも信頼性の高いアース装置を提供す
るものである。
Ｋ従来の技術Σ
ＶＴＲは回転ドラムと固定ドラムとを備え、これらのド
ラムの外周面に磁気テープをヘリカルに巻付けるととも
に、回転ドラｌ＼に設けられている磁気ヘッドによって
上記磁気テープ上を走査することによってヘリカルスキ
ャンを達成するようにしている。そしてこのようなヘッ
ドドラム装置においては、回転ドラムをアースする必要
があり、アースを通常は支軸を用いて行なうようにして
いｌζ。
軸が回転するタイプのドラム装置においては、メカデツ
キに設けられているアース用のリーフばねの自由端を延
長するとともに、この自由端を軸の下端面に押当てるこ
とによって軸を介して回転ドラムのアースをとるように
していた。これに対して軸が固定されているタイプのも
のでは、軸の上部に回転部分を設け、この部分の接触面
の面粗度を良好にし、メカデツキに取付けられたリーフ
スプリングから成るアースの自由端側を上記接触部に接
触させるようにしていた。
て発明が解決しようとする問題点】
従来のこのような回転ドラムのアース装置においては、
軸アースをメカデツキに取付けるとともに、この軸アー
スの接触部分がドラムの半径方向中心部付近まで延長さ
れるようになっていた。従ってこのような従来のアース
装置によれば、構造が大きくなるばかりでなく、セット
全体の高さを制限し、重量も重くなる欠点があった。
本発明はこのような問題点に鑑みてなされたちのであっ
て、構造が小さく、またセットの高さが高くなることも
なく、重重も小さくなるようにした回転ドラムのアース
装置を提供することを目的とするものである。
Ｋ問題点を解決するための手段】
本発明は、磁気ヘッドを有する回転ドラムの電位をアー
ス電位に落ず装置において、弾性を有するワイヤ状部材
を設け、該ワイヤ状部材の１１側を回転側または固定側
の被取付は部に巻装して固定するとともに、前記ワイヤ
状部材の先端側の接触部または前記ワイヤ状部材の先端
部に取付けられている接触子を固定軸または回転軸ある
いはそれらのボス部の外周部に圧着させ、該ライ１フ状
部材によって前記回転ドラムのアースをとるようにした
ものである。
Ｋ作用ｙ
従って回転ドラムは回転側または固定側に固定されてい
るワイヤ状部材およびその接触部またはワイヤ状部材の
接触子を介してシャーシ側あるいはメカデツキ側にアー
スされることになる。The present invention is a head drum device used in a VTR, etc. (Summary of the Invention) A torsion coil spring is used, and the base end of the torsion coil spring is wound around a rotating drum to which it is attached. In addition to fixing the torsion spring, a contact is attached to the tip side of the torsion spring, and the contact is crimped onto the outer circumferential surface of the boss of the fixed shaft, thereby grounding the rotating drum. This provides a highly reliable grounding device. K Prior Art Σ A VTR is equipped with a rotating drum and a stationary drum, and a magnetic tape is wound helically around the outer circumferential surface of these drums, and the magnetic tape is scanned by a magnetic head provided on a rotating drum. By doing this, helical scanning is achieved. In such a head drum device, it is necessary to ground the rotating drum, and this is usually done using a support shaft. In a drum device with a rotating shaft, the free end of a leaf spring for grounding provided on the mechanical deck is extended, and the free end is pressed against the lower end of the shaft to connect the rotating drum through the shaft. I was trying to ground it. On the other hand, in the type with a fixed shaft, a rotating part is provided at the top of the shaft, the contact surface of this part has a good surface roughness, and the free end of the earth is made of a leaf spring attached to a mechanical deck. The side was brought into contact with the contact portion. [Problems to be Solved by the Invention] In such a conventional grounding device for a rotating drum,
The shaft ground was attached to the mechanical deck, and the contact portion of the shaft ground was extended to near the radial center of the drum. Therefore, such a conventional grounding device has disadvantages in that it not only has a large structure, but also limits the height of the entire set and is heavy in weight. The present invention has been made in view of these problems, and it is an object of the present invention to provide a grounding device for a rotating drum that has a small structure, does not increase the height of the set, and is light in weight. This is the purpose. Means for Solving Problem K] The present invention provides a device for lowering the potential of a rotating drum having a magnetic head to ground potential, in which a wire-like member having elasticity is provided, and the 11 side of the wire-like member is placed on the rotation side. Alternatively, the fixed side to be attached is wrapped around and fixed, and the contact part on the tip side of the wire-like member or the contactor attached to the tip of the wire-like member is connected to the fixed shaft, the rotating shaft, or the like. The rotating drum is grounded by the life-like member. K effect y Therefore, the rotating drum is grounded to the chassis side or the mechanical deck side via the wire-like member fixed to the rotating side or stationary side and its contact portion or the contact of the wire-like member.
第４図は本発明の一実施例に係るヘッドドラム装ηの全
体の構造を示すものであって、この装置は磁気ヘッド１
０を協える回転ドラム１１と、その下側に同軸状に配さ
れる固定ドラム１２とから構成されている。磁気ヘッド
１０はヘッドベース１３の先端部に取付けられるととも
に、ヘッドベース１３がビス１４によって回転ドラム１
１の下面に固定されるようになっている。そして端子板
１５に取付けられている接触子１６が上記磁気ヘッド１
０とロータリトランス１７のロータ１８との接続を行な
うようにしている。ロータリトランス１７は回転側と固
定側との間での信号の授受を行なうためのものであって
、そのロータ１８がヘッドドラム１１側に、また下側の
ステータ１９が固定ドラム１２側にそれぞれ取付けられ
るようになっており、互いに微小なエアギセップを介し
て対向している。
磁気ヘッド１０を有する回転ドラム１１はボス２２に取
付けられるようになっている。回転ドラム１１はビス２
３によってボス２２に固定されている。そしてボス２２
は上下一対のボールベアリング２４．２５によって支＠
２６に回転可能に支持されるようになっている。この支
軸２６の下端側の部分は、固定ドラム１２の中心部に形
成されている穴２７に圧入されるようになっている。ま
た固定ドラム１２の下側にはフレキシブルプリント基板
２８が取付けられるようになっており、このプリント基
板２８の端部に取付けられている端子板２つに植設され
ているビン３ｏ、３１を介してプリント基板２８の先端
部は下側の固定ドラム１２の下面に取付けられるように
なっている。
上記回転ドラム１１の内側にはモータ３４が配されてお
り、このモータ３４によって回転ドラム１１を回転駆動
するようになっている。すなわちステータヨーク３５が
ビス３６によって回転ドラム１１に固着されるとともに
、ヨーク３５にはマグネット３７が固着されている。そ
してマグネット３７はその上側に配されているプリント
基板３８に形成されているコイルと対向するようになっ
ている。プリント基板３８は支軸２６の上端に固着され
たボス３９にビス／ＩＯを介して固定されるようになっ
ている。そしてボス３９にはフレキシブル基板４１の先
端部に取付けられている端子板４２が固着されるように
なっており、フレキシブル基板４１を介してプリント基
板３８のコイルに通電が行なわれるようになっている。
つぎに上記磁気ヘッド１０を備える回転ドラム１１のア
ースの構造について説明すると、第１図、第２図、およ
び第３図に示すように、回転ドラム１１のモータのヨー
ク３５の内側には取付FIG. 4 shows the overall structure of a head drum device η according to an embodiment of the present invention, and this device shows a magnetic head 1
It is composed of a rotating drum 11 that rotates in parallel with the rotary drum 11, and a fixed drum 12 coaxially disposed below the rotating drum 11. The magnetic head 10 is attached to the tip of a head base 13, and the head base 13 is connected to the rotating drum 1 by screws 14.
It is fixed to the bottom surface of 1. A contactor 16 attached to the terminal plate 15 is connected to the magnetic head 1.
0 and the rotor 18 of the rotary transformer 17. The rotary transformer 17 is for transmitting and receiving signals between the rotating side and the fixed side, and its rotor 18 is attached to the head drum 11 side, and the lower stator 19 is attached to the fixed drum 12 side. They face each other via a tiny air gissep. A rotating drum 11 having a magnetic head 10 is attached to a boss 22. Rotating drum 11 is screw 2
3 to the boss 22. And boss 22
is supported by a pair of upper and lower ball bearings 24 and 25.
It is rotatably supported by 26. The lower end portion of this support shaft 26 is press-fitted into a hole 27 formed in the center of the fixed drum 12. Further, a flexible printed circuit board 28 is attached to the lower side of the fixed drum 12, and via the pins 3o and 31 implanted in two terminal plates attached to the ends of this printed circuit board 28, a flexible printed circuit board 28 is attached. The leading end of the printed circuit board 28 is attached to the lower surface of the lower stationary drum 12. A motor 34 is disposed inside the rotating drum 11, and the motor 34 drives the rotating drum 11 to rotate. That is, the stator yoke 35 is fixed to the rotating drum 11 by screws 36, and a magnet 37 is fixed to the yoke 35. The magnet 37 faces a coil formed on a printed circuit board 38 placed above it. The printed circuit board 38 is fixed to a boss 39 fixed to the upper end of the support shaft 26 via screws/IO. A terminal plate 42 attached to the tip of a flexible board 41 is fixed to the boss 39, so that the coil of the printed circuit board 38 is energized via the flexible board 41. . Next, the structure of the grounding of the rotary drum 11 equipped with the magnetic head 10 will be explained. As shown in FIGS. 1, 2, and 3, there is a
【プ板４５が取付けられている。
取付は板４５にはビン４６が植設されるとともに、この
ビン４６によってアースばね４７の基端側が巻付けられ
て支持されている。アースばね４７の先端側には接触子
４８が固着されるととｂに、この接触子４８が上記支軸
２６の上端に固着されているボス３９の溝５０に圧着さ
れるようになっている。なお非作動状態においてはアー
スばね４７の先端側の接触子４８は取付は板４５の係止
部４９によって第２図に示すように係１ヒされるように
なってＪ３す、この状態においてヘッドドラム装置の組
立てが行なわれるようになっている。
以上のような構成において、上下に同軸状に配されてい
る回転ドラム１１と固定ドラム１２の外周面には磁気テ
ープがヘリカルに巻付けられるようになっており、この
状態においてモータ３４によって回転ドラム１１が回転
駆動される。するとドラム１１にベース１３を介して支
持されている磁気ヘッド１０が磁気テープの表面を斜め
に走査することになり、ヘリカルスキャンが行なわれる
。
従ってロータリトランス１７を介して固定側から供給さ
れた信号が磁気ヘッド１０に印加され、磁気ヘッド１０
によって磁気テープ上に信号の記録が行なわれる。ある
いはまた磁気テープ上の信号を磁気ヘッド１０が読出す
とともに、この信号をロークリトランス１７を通して固
定側に供給することになる。これによって所定の記録お
よび／または再生が行なわれることになる。
このようなＶＴＲ用のヘッドドラムＨ胃において、支軸
２６は固定軸を構成しており、しかもヘッドドラム装置
を偏平にして軸線方向の寸法を小さくするために、モー
タ３４が回転ドラム１１の中に入っており、モータ３４
のハーネスがフレキシブル基板４１によって構成され、
回転ドラム１１の上側から引出されるようになっている
。従ってこのような構造によると、ドラム１１の上部か
ら軸アースをとることが困難になる。またドラム１１の
外周而に直接アースを接触させるようにすると、外周面
の周速が大きいのでジッタの原因になる。またこのよう
な構造を採用すると接触部の摩耗が大きくなる。
そこでこのヘッドドラム装置においては、第１図〜第３
図に示すように回転ドラム１１内にアースばね４７を取
付け、このアースばね４７の先端に設けられている接触
子４８を支＠２６の上端に固着されているボス３９の外
周而に形成されている溝５０に圧着するようにしている
。このような構造によれば、ねじりコイルばね４７を利
用して圧接力を低くし、安定化させろことが可能になる
。
また接触子４８として負金属を用いでいるために、酸化
によるさびが確実に防止されることになる。
このようなアースの構造によれば、支＠２６をドラム１
１の上部に突出さぼる必要がなくなるので、ヘッドドラ
ム装置全体の軸線方向の寸法を小さくでき、軒昂化が可
能になる。またばね４７の圧接力が低く、安定化してい
るために、摩耗が少なく、ジッタに対して右利になる。
Ｋ応用例】
以Ｆ本発明を図示の一実施例につぎ述べたが、本発明は
上記実施例によって限定されることなく、本発明の技術
的思想に基いて各種の変更が可能である。例えば上記実
施例においては、アースを構成するねじつばね４７が回
転ドラム１１側に設けられるとともに、このばね４７の
先端に取付けられている接触子４８が固定軸２６の上端
に固着されているボス３９の外周面に圧着されるように
なっている。このような構造に代えて、固定ドラム１２
側にアースばねを取付けるとともに、このアースばねの
先端側の接触部または接触子を回転ドラムに固着された
回転軸の外周面あるいはこの回転軸に固着されたボスの
外周而に圧着させるようにしてもよい。
Ｋ発明の効果刃
以上のように本発明は、弾性を有するワイヤ状部材を設
け、このライＡ１状部材の阜端側を回転側または固定側
の被取付は部に巻装して固定するとともに、ワイヤ状部
材の先端側の接触部またはワイヤ状部材の先端部に取付
けられている接触子を固定軸または回転軸あるいはそれ
らのボス部の外周而に１上着させ、ワイヤ状部材によっ
て回転ドラムのアースをとるようにしたものである。従
ってこのような構造によれば、回転ドラムまたは固定ド
ラム内にアース装置を組込むことが可能になり、ヘッド
ドラム装置の小型化を図ることが可能になり、とくに軸
線方向の寸法を小さくできるようになる。またワイヤ状
部材の接触部または接触子が固定軸または回転軸あるい
はそれらのボス部の外周而に圧着するようになっている
ために、Ｉ！ｉ！糺およびシックに対して右利になる１
゜[Plate 45 is attached. For attachment, a pin 46 is planted on the plate 45, and the base end of an earth spring 47 is wound around and supported by the pin 46. When a contact 48 is fixed to the tip side of the earth spring 47, this contact 48 is pressed into a groove 50 of a boss 39 fixed to the upper end of the support shaft 26. . In addition, in the non-operating state, the contact 48 on the tip side of the ground spring 47 is attached by the locking part 49 of the plate 45 as shown in FIG. The drum device is now being assembled. In the above configuration, magnetic tape is helically wound around the outer circumferential surfaces of the rotating drum 11 and fixed drum 12, which are arranged coaxially above and below, and in this state, the rotating drum is 11 is driven to rotate. Then, the magnetic head 10 supported by the drum 11 via the base 13 scans the surface of the magnetic tape obliquely, resulting in a helical scan. Therefore, a signal supplied from the fixed side via the rotary transformer 17 is applied to the magnetic head 10.
Signals are recorded on the magnetic tape. Alternatively, the magnetic head 10 reads the signal on the magnetic tape and supplies this signal to the fixed side through the low retransformer 17. As a result, predetermined recording and/or reproduction will be performed. In such a head drum H for a VTR, the support shaft 26 constitutes a fixed shaft, and in order to flatten the head drum device and reduce its axial dimension, the motor 34 is mounted inside the rotating drum 11. The motor 34
The harness is constituted by a flexible substrate 41,
It is adapted to be pulled out from above the rotating drum 11. Therefore, with such a structure, it becomes difficult to ground the shaft from the top of the drum 11. Furthermore, if the ground is brought into direct contact with the outer periphery of the drum 11, the circumferential speed of the outer periphery is high, causing jitter. Further, if such a structure is adopted, the wear of the contact portion increases. Therefore, in this head drum device, Figs.
As shown in the figure, an earth spring 47 is installed inside the rotating drum 11, and a contact 48 provided at the tip of the earth spring 47 is formed on the outer periphery of a boss 39 fixed to the upper end of the support 26. It is pressed into the groove 50 in which it is located. According to such a structure, it is possible to use the torsion coil spring 47 to lower and stabilize the pressure contact force. Further, since a negative metal can be used as the contactor 48, rust due to oxidation can be reliably prevented. According to this grounding structure, support @26 is connected to drum 1.
Since there is no need to protrude from the top of the head drum device 1, the axial dimension of the entire head drum device can be reduced and the eaves can be expanded. Further, since the pressure force of the spring 47 is low and stable, there is little wear and is advantageous against jitter. APPLICATION EXAMPLE The present invention has been described below with reference to an illustrated embodiment, but the present invention is not limited to the above-described embodiment, and various modifications can be made based on the technical idea of the present invention. For example, in the above embodiment, a screw spring 47 constituting the ground is provided on the rotating drum 11 side, and a contact 48 attached to the tip of the spring 47 is attached to a boss fixed to the upper end of the fixed shaft 26. It is adapted to be crimped onto the outer peripheral surface of 39. Instead of such a structure, a fixed drum 12
An earth spring is attached to the side, and the contact portion or contactor on the tip side of this earth spring is crimped to the outer peripheral surface of a rotating shaft fixed to the rotating drum or to the outer periphery of a boss fixed to this rotating shaft. Good too. Effects of the K Invention As described above, the present invention provides a wire-like member having elasticity, and wraps and fixes the open end side of this lie A1-like member around the rotating side or fixed side to which it is attached. , a contact portion on the tip side of the wire-like member or a contactor attached to the tip of the wire-like member is attached to the outer periphery of the fixed shaft or rotating shaft or their boss portion, and the wire-like member is used to connect the rotating drum. It is designed to provide a grounding. Therefore, with such a structure, it becomes possible to incorporate the grounding device into the rotating drum or the fixed drum, and it becomes possible to reduce the size of the head drum device, and in particular, it becomes possible to reduce the dimension in the axial direction. Become. In addition, since the contact portion or contactor of the wire-like member is crimped onto the outer periphery of the fixed shaft, rotating shaft, or their boss portion, I! i! 1 to be right-handed against Tadasu and Sic
゜
第１図は本発明の一実施例に係る回転ドラムのアースの
拡大平面図、第２図は同アースの正面図、第３図は回転
ドラムのアースの全体の構造を示す回転ドラムの平面図
、第４図は組立てられたヘッドドラｌい装置の全体の縦
断面図である。
また図面中の主要な部分の名称はつぎの通りである。
１０・・・磁気ヘッド
１１・・・回転ドラム
３つ・・・ボス
４５・・・取付は板
４６ ・
４７ ・
４８ ・
５０ ・
・ビン
・アースばね
・接触子
・溝FIG. 1 is an enlarged plan view of the ground of a rotating drum according to an embodiment of the present invention, FIG. 2 is a front view of the same ground, and FIG. 3 is a plan view of the rotating drum showing the overall structure of the ground of the rotating drum. 4 is a longitudinal cross-sectional view of the entire assembled head driver device. The names of the main parts in the drawings are as follows. 10...Magnetic head 11...3 rotating drums...Boss 45...Mounting plates 46, 47, 48, 50...Bottle, earth spring, contact, groove
Claims (1)
位に落す装置において、弾性を有するワイヤ状部材を設
け、該ワイヤ状部材の基端側を回転側または固定側の被
取付け部に巻装して固定するとともに、前記ワイヤ状部
材の先端側の接触部または前記ワイヤ状部材の先端部に
取付けられている接触子を固定軸または回転軸あるいは
それらのボス部の外周面に圧着させ、該ワイヤ状部材に
よって前記回転ドラムのアースをとるようにしたことを
特徴とする回転ドラムのアース装置。1. In a device for lowering the potential of a rotating drum having a magnetic head to ground potential, an elastic wire-like member is provided, and the proximal end of the wire-like member is wound around an attached part on a rotating side or a stationary side. At the same time, a contact portion on the tip side of the wire-like member or a contact attached to the tip of the wire-like member is crimped onto the outer circumferential surface of the fixed shaft or rotating shaft or their boss portion, and the wire-like member is fixed. A grounding device for a rotating drum, characterized in that the rotating drum is grounded by a member.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63159941A JP2536074B2 (en) | 1988-06-28 | 1988-06-28 | Grounding device for rotating drum |
| KR1019890008682A KR900000862A (en) | 1988-06-28 | 1989-06-23 | Grounding device for rotating drums |
| KR2019980005217U KR0131857Y1 (en) | 1988-06-28 | 1998-03-30 | Apparatus of earth for rotating drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63159941A JP2536074B2 (en) | 1988-06-28 | 1988-06-28 | Grounding device for rotating drum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH029041A true JPH029041A (en) | 1990-01-12 |
| JP2536074B2 JP2536074B2 (en) | 1996-09-18 |
Family
ID=15704502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63159941A Expired - Fee Related JP2536074B2 (en) | 1988-06-28 | 1988-06-28 | Grounding device for rotating drum |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2536074B2 (en) |
| KR (1) | KR900000862A (en) |
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| US5325248A (en) * | 1991-01-08 | 1994-06-28 | Sharp Kabushiki Kaisha | Rotary head assembly |
| US6767969B2 (en) | 2000-10-25 | 2004-07-27 | Asahi Kasei Kabushiki Kaisha | Hydrogenated polymer |
| DE112006002443T5 (en) | 2005-09-14 | 2008-07-10 | Asahi Kasei Chemicals Corporation | Block copolymer and process for producing a shrink film |
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| WO2008123240A1 (en) | 2007-03-26 | 2008-10-16 | Asahi Kasei Chemicals Corporation | Thermoplastic composition and molded article produced from the same |
| WO2009128397A1 (en) | 2008-04-14 | 2009-10-22 | 旭化成ケミカルズ株式会社 | Adhesive composition |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152316U (en) * | 1984-09-07 | 1986-04-08 |
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1988
- 1988-06-28 JP JP63159941A patent/JP2536074B2/en not_active Expired - Fee Related
-
1989
- 1989-06-23 KR KR1019890008682A patent/KR900000862A/en not_active Application Discontinuation
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152316U (en) * | 1984-09-07 | 1986-04-08 |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR900000862A (en) | 1990-01-31 |
| JP2536074B2 (en) | 1996-09-18 |
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| LAPS | Cancellation because of no payment of annual fees |