JP2578980B2 - Magneto-optical recording / reproducing device - Google Patents
Magneto-optical recording / reproducing deviceInfo
- Publication number
- JP2578980B2 JP2578980B2 JP15338389A JP15338389A JP2578980B2 JP 2578980 B2 JP2578980 B2 JP 2578980B2 JP 15338389 A JP15338389 A JP 15338389A JP 15338389 A JP15338389 A JP 15338389A JP 2578980 B2 JP2578980 B2 JP 2578980B2
- Authority
- JP
- Japan
- Prior art keywords
- magneto
- optical
- recording
- optical disk
- elastic 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.)
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Description
【発明の詳細な説明】 産業上の利用分野 本発明は電子計算機の外部記憶装置、音楽及び映像信
号、その他情報の記録再生装置等に利用される光磁気記
録再生装置に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magneto-optical recording / reproducing device used for an external storage device of a computer, a recording / reproducing device for music and video signals, and other information.
従来の技術 近年電子計算機の発達及び情報の高速大量伝達の手段
の発達と共に、低価格、高密度かつ大容量、高速転送能
力のある不揮発性記憶装置が要求され、多くは磁気ディ
スク装置に用いられているが、記録密度が低く、１情報
単位あたりの価格が高く、また特に固定磁気ディスク装
置では媒体交換が困難である等の問題がある。光学記録
はそれらの問題点を解決する技術として現在脚光を浴げ
ており、特に書き換え可能な光磁気記録は多くの方面で
期待されている。2. Description of the Related Art In recent years, with the development of computers and the development of means for high-speed mass transmission of information, low-cost, high-density, large-capacity, non-volatile storage devices with high-speed transfer capability have been demanded, and many of them have been However, there are problems that the recording density is low, the price per information unit is high, and it is particularly difficult to change the medium in a fixed magnetic disk device. Optical recording is currently in the spotlight as a technique for solving these problems, and rewritable magneto-optical recording is particularly expected in many fields.
光磁気記録においては、光変調による記録手法ではオ
ーバライトが困難なため、近年は磁界変調によるオーバ
ライト手法が検討されており、従来数多くの報告がなさ
れている。前記手法は固定磁気ディスク、またはフレキ
シブル磁気ディスクの記録手法に類似しており、浮上型
または摺動型の磁気ヘッドにより光磁気ディスクに与え
る磁界を変調するが、記録ビットの大きさは収束したレ
ーザ光の収束径で制御する。In magneto-optical recording, it is difficult to overwrite using a recording method based on optical modulation. Therefore, in recent years, an overwrite method based on magnetic field modulation has been studied, and many reports have been made in the past. The above method is similar to the recording method of a fixed magnetic disk or a flexible magnetic disk, and modulates a magnetic field applied to a magneto-optical disk by a floating or sliding magnetic head, but the size of a recording bit is converged by a laser. It is controlled by the convergence diameter of light.
以下、図面を参照しながら、従来の光磁気記録再生装
置について説明を行う。ここでは例として浮上型の磁気
ヘッドを用いた場合を示す。Hereinafter, a conventional magneto-optical recording and reproducing apparatus will be described with reference to the drawings. Here, a case in which a floating magnetic head is used is shown as an example.
第２図（ａ）〜（ｃ）は従来の光磁気記録再生装置を
示すもので、（ａ）はその平面図、（ｂ），（ｃ）はそ
の側面図の各種状態を示すものである。第２図（ａ）〜
（ｃ）で、１はスパイラル状の記録トラックを有する光
磁気ディスクであり、情報の記録面は第２図（ｂ）の下
側である。２は光学ヘッドで、矢印Ａ方向にアクセスさ
れるようになっており、記録，再生，消去用の収束した
レーザ光を光磁気ディスク１の記録面に与えるための光
学系が内蔵されている。2 (a) to 2 (c) show a conventional magneto-optical recording / reproducing apparatus, wherein (a) shows a plan view thereof, and (b) and (c) show various states of a side view thereof. . Fig. 2 (a)-
In FIG. 2C, reference numeral 1 denotes a magneto-optical disk having spiral recording tracks, and the information recording surface is the lower side of FIG. 2B. Reference numeral 2 denotes an optical head, which is accessed in the direction of arrow A, and has a built-in optical system for giving converged laser light for recording, reproduction, and erasure to the recording surface of the magneto-optical disk 1.
座標軸の方向を第２図（ａ）〜（ｂ）に示すように設
定する。ｘ方向は光学ヘッド２のアクセス方向に平行
で、第２図（ｂ）の右側を正の向きとする。ｙ方向はｘ
軸に垂直でかつ光磁気ディスク１に平行な方向で、第２
図（ａ）の上側を正の向きとする。ｚ方向は光磁気ディ
スク１に垂直な方向で、第２図（ｂ）の上側を正とす
る。便宜上、ｚ軸方向の正の向きを上方、負の向きを下
方と呼び、ｘ軸方向の正の向きを後方、負の向きを前方
と呼ぶ。The directions of the coordinate axes are set as shown in FIGS. 2 (a) and 2 (b). The x direction is parallel to the access direction of the optical head 2, and the right side in FIG. 2B is a positive direction. x in y direction
In a direction perpendicular to the axis and parallel to the magneto-optical disk 1,
The upper side of the figure (a) is defined as a positive direction. The z direction is a direction perpendicular to the magneto-optical disk 1, and the upper side in FIG. 2B is positive. For convenience, the positive direction in the z-axis direction is called upward, the negative direction is called downward, the positive direction in the x-axis direction is called back, and the negative direction is called front.
４は光磁気ディスク１に上方の記録，消去に必要な垂
直磁界を与えるための電磁石で構成された磁気ヘッドで
あり、光磁気ディスク１を挟んで光学ヘッド２が光磁気
ディスク１に与える収束したレーザ光と対向する位置に
配置され、板ばね24、第１の接続部材21、第２の接続部
材22を介して光学ヘッド２に接続され、光学ヘッド２の
アクセス動作と共にアクセス方向Ａに移動する。磁気ヘ
ッド４は、光磁気ディスク１の記録トラックの接線方向
に相対速度を持つ空気流によりｚ軸方向の正の向きへの
揚力を発生する形状に成形されている。また、第１の接
続部材21と第２の接続部材22はピン23を介して相互に接
続されており、第１の接続部材21は駆動機構（図示せ
ず）によってピン23の回転軸回りに回転が可能である。
５は光磁気ディスク１を装着し、トルクを与えるための
ターンテーブルであって、トルクを発生させるためのス
ピンドルモータ６に接続されている。３は光磁気ディス
ク１を内蔵したカートリッジであって、光学ヘッド２、
磁気ヘッド４、ターンテーブル５を挿入するためのアク
セス穴3aが開けられており、移動機構（図示せず）によ
って挿入後ターンテーブル５に移動し、装着される。カ
ートリッジ３にはカートリッジ３が光磁気記録再生装置
の外にある場合はアクセス穴3aを閉じておくための部
材，機構を有するが、ここでは省略している。７は光磁
気記録再生装置全体を囲むケースであり、カートリッジ
３を挿入するための挿入口7aが第２図（ａ）〜（ｃ）の
左側面に開けられている。Numeral 4 denotes a magnetic head composed of an electromagnet for applying a perpendicular magnetic field required for recording and erasing upwards to the magneto-optical disk 1. The optical head 2 converges on the magneto-optical disk 1 with the magneto-optical disk 1 interposed therebetween. It is arranged at a position facing the laser beam, is connected to the optical head 2 via a leaf spring 24, a first connecting member 21, and a second connecting member 22, and moves in the access direction A with the access operation of the optical head 2. . The magnetic head 4 is shaped so as to generate a lift in the positive z-axis direction by an airflow having a relative velocity in the tangential direction of the recording track of the magneto-optical disk 1. Further, the first connecting member 21 and the second connecting member 22 are connected to each other via a pin 23, and the first connecting member 21 is rotated around the rotation axis of the pin 23 by a driving mechanism (not shown). Rotation is possible.
Reference numeral 5 denotes a turntable for mounting the magneto-optical disk 1 and applying a torque, and is connected to a spindle motor 6 for generating a torque. Reference numeral 3 denotes a cartridge containing the magneto-optical disk 1, and the optical head 2,
An access hole 3a for inserting the magnetic head 4 and the turntable 5 is opened, and is moved to and mounted on the turntable 5 after the insertion by a moving mechanism (not shown). The cartridge 3 has a member and a mechanism for closing the access hole 3a when the cartridge 3 is outside the magneto-optical recording / reproducing apparatus, but is omitted here. Reference numeral 7 denotes a case surrounding the entire magneto-optical recording / reproducing apparatus, and an insertion port 7a for inserting the cartridge 3 is opened on the left side surface in FIGS. 2 (a) to 2 (c).
以上のように構成された光磁気記録再生装置につい
て、以下その動作について説明する。The operation of the magneto-optical recording / reproducing apparatus configured as described above will be described below.
まず、第２図（ｂ）の様に、光磁気ディスク１を内蔵
したカートリッジ３が挿入口7aから挿入されて後方に進
み、光磁気ディスク１の回転中心軸とターンテーブル５
の回転中心軸が略同一直線上となる位置で静止する。こ
の時、磁気ヘッド４は板ばね24と第１の接続部材21のピ
ン23回りの回転により光磁気記録再生装置内部の上方に
位置しており、カートリッジ３との衝突を避ける。First, as shown in FIG. 2 (b), the cartridge 3 containing the magneto-optical disk 1 is inserted from the insertion slot 7a and proceeds backward, and the rotation center axis of the magneto-optical disk 1 and the turntable 5 are turned on.
Stand still at a position where the rotation center axes are substantially on the same straight line. At this time, the magnetic head 4 is located above the inside of the magneto-optical recording / reproducing apparatus by rotation of the leaf spring 24 and the pin 23 of the first connecting member 21 to avoid collision with the cartridge 3.
次に第２図（ｃ）に示すように、カートリッジ３は下
方に移動して光磁気ディスク１がターンテーブル５に装
着され、内蔵した光磁気ディスク１がカートリッジ３の
内壁と接触しない位置で静止する。この時光学ヘッド２
はカートリッジ３のアクセス穴3aに挿入され、光磁気デ
ィスク１に対し収束したレーザ光を与えうる状態とな
る。この状態でスピンドルモータ６がターンテーブル５
を介して光磁気ディスク１にｚ軸回りのトルクを与え、
光磁気ディスク１を所定の回転数で回転させる。Next, as shown in FIG. 2 (c), the cartridge 3 moves downward, the magneto-optical disc 1 is mounted on the turntable 5, and the built-in magneto-optical disc 1 is stopped at a position where it does not contact the inner wall of the cartridge 3. I do. At this time, the optical head 2
Is inserted into the access hole 3a of the cartridge 3 so that a converged laser beam can be given to the magneto-optical disk 1. In this state, the spindle motor 6 turns the turntable 5
To the magneto-optical disk 1 via the z axis,
The magneto-optical disk 1 is rotated at a predetermined rotation speed.
その後第２図（ｃ）に示すように、第１の接続部材21
が第２の接続部材22に対し第２図（ｃ）でピン23回りに
反時計方向に回転し、磁気ヘッド４と板ばね24が下方に
移動して磁気ヘッド４がカートリッジ３のアクセス穴に
挿入され、光磁気ディスク１に対し接近する。この時、
光磁気ディスク１は回転しているので、光磁気ディスク
１の表面近傍の空気層は、粘性により光磁気ディスク１
の表面に固着し、磁気ヘッド４に対し光磁気ディスク１
の記録トラックの接線方向の相対速度を持つ空気流とな
る。即ち磁気ヘッド４が光磁気ディスク１に十分接近す
ると、磁気ヘッド４は光磁気ディスク１から離れる向き
の揚力を得る。一方板ばね24は磁気ヘッド４を光磁気デ
ィスク１に接近させる方向の押し付け力を与える。磁気
ヘッド４は前記揚力と押し付け力がつり合う位置で光磁
気ディスク１に対して位置する。板ばね24に適切な形
状、適切な材料を用いることによって、磁気ヘッド４は
光磁気ディスク１に接する事なく、かつ記録，消去用の
磁界を与えるに必要な位置まで接近した状態を維持する
ことができる。Thereafter, as shown in FIG. 2 (c), the first connecting member 21
Is rotated counterclockwise around the pin 23 in FIG. 2C with respect to the second connecting member 22, and the magnetic head 4 and the leaf spring 24 move downward so that the magnetic head 4 is inserted into the access hole of the cartridge 3. It is inserted and approaches the magneto-optical disk 1. At this time,
Since the magneto-optical disk 1 is rotating, the air layer near the surface of the magneto-optical disk 1 is viscous, so
Fixed to the surface of the magneto-optical disk 1 with respect to the magnetic head 4.
The air flow has a relative velocity in the tangential direction of the recording track. That is, when the magnetic head 4 approaches the magneto-optical disk 1 sufficiently, the magnetic head 4 obtains a lift away from the magneto-optical disk 1. On the other hand, the leaf spring 24 applies a pressing force in a direction in which the magnetic head 4 approaches the magneto-optical disk 1. The magnetic head 4 is positioned with respect to the magneto-optical disk 1 at a position where the lift and the pressing force are balanced. By using an appropriate shape and an appropriate material for the leaf spring 24, the magnetic head 4 does not come into contact with the magneto-optical disk 1 and maintains a state close to a position necessary for applying a magnetic field for recording and erasing. Can be.
情報を記録する際には磁気ヘッド４が情報に応じて変
調した磁界を光磁気ディスク１に付与すると同時に光学
ヘッド２が無変調の収束したレーザ光を光磁気ディスク
１に照射し、熱磁気記録を行う。消去の際には磁気ヘッ
ド４が消去の向きと定義した向きの無変調の磁界を与
え、光学ヘッド２が無変調の収束したレーザ光を光磁気
ディスク１に照射し情報を消去する。When recording information, the magnetic head 4 applies a magnetic field modulated in accordance with the information to the magneto-optical disk 1, and at the same time, the optical head 2 irradiates the non-modulated and converged laser beam to the magneto-optical disk 1 to perform thermomagnetic recording. I do. At the time of erasing, the magnetic head 4 applies an unmodulated magnetic field in the direction defined as the erasing direction, and the optical head 2 irradiates the unmodulated and converged laser beam to the magneto-optical disk 1 to erase information.
磁気ヘッド４は板ばね24、第１の接続部材21、第２の
接続部材22を介して光学ヘッド２に接続されているた
め、光学ヘッド２が矢印Ａ方向の任意の位置に存在して
も、磁気ヘッド４は常に収束したレーザ光の照射される
位置に記録，消去用の磁界を与えることができる。Since the magnetic head 4 is connected to the optical head 2 via the leaf spring 24, the first connection member 21, and the second connection member 22, even if the optical head 2 is present at any position in the direction of arrow A, The magnetic head 4 can always apply a recording and erasing magnetic field to a position irradiated with the converged laser light.
発明が解決しようとする課題 しかしながら、前記のような構成では、次のような課
題を生じていた。Problems to be Solved by the Invention However, the above-described configuration has caused the following problems.
磁気ヘッド４が記録，消去に十分な磁界を与えること
が可能な領域はx,y,z各方向とも非常に狭い。第２図に
示す従来例のように、カートリッジ３の挿入時に磁気ヘ
ッド４が板ばね24、第１の接続部21、第２の接続部22、
ピン23等の機構を介して上方に移動しカートリッジ３と
の衝突を避ける構造では、機構系の有する微少な各部の
クリアランスによって磁気ヘッド４と光学ヘッド２の相
対位置関係が光学ヘッド２のアクセス動作による加速度
や他の機械的外乱によって容易に変化する。従ってx,y
方向に磁気ヘッド４の位置が変動した場合については、
磁気ヘッド４が磁界を与える位置と光学ヘッド２が収束
したレーザ光を与える光磁気ディスク上の位置の相対的
ずれが発生し、記録，消去に十分な磁界が付与されない
場合があり、動作が不安定であった。ｚ方向の変動に対
しても、磁気ヘッド４が光磁気ディスク１から離れる場
合は磁界が不十分となり、また接近する場合は磁気ヘッ
ドが光磁気ディスク１に衝突し、磁気ヘッド４の損傷や
板ばね24の振動及び疲労、光磁気ディスク１の損傷、デ
ータ破壊等が生じていた。The area where the magnetic head 4 can apply a sufficient magnetic field for recording and erasing is very narrow in each of the x, y, and z directions. As in the conventional example shown in FIG. 2, when the cartridge 3 is inserted, the magnetic head 4 includes a leaf spring 24, a first connecting portion 21, a second connecting portion 22,
In the structure in which the magnetic head 4 and the optical head 2 are moved upward through a mechanism such as the pin 23 to avoid collision with the cartridge 3, the relative positional relationship between the magnetic head 4 and the optical head 2 is determined by the clearance of the minute parts of the mechanical system. Changes easily due to acceleration and other mechanical disturbances. Therefore x, y
When the position of the magnetic head 4 fluctuates in the direction,
A relative displacement may occur between the position where the magnetic head 4 applies the magnetic field and the position on the magneto-optical disk where the optical head 2 applies the converged laser light, and a sufficient magnetic field may not be applied for recording and erasing, resulting in malfunction. It was stable. The magnetic field becomes insufficient when the magnetic head 4 moves away from the magneto-optical disk 1 even when the magnetic head 4 moves away from the magneto-optical disk 1, and the magnetic head collides with the magneto-optical disk 1 when the magnetic head 4 moves close to the magneto-optical disk 1. Vibration and fatigue of the spring 24, damage of the magneto-optical disk 1, data destruction, etc. have occurred.
また、磁気ヘッド４と光学ヘッド２の相対位置を十分
な精度で維持しようとすれば第１の接続部材21、第２の
接続部材22、ピン23の組合せ精度を上げる必要があり、
これはコストアップの一因となっていた。In order to maintain the relative position between the magnetic head 4 and the optical head 2 with sufficient accuracy, it is necessary to increase the combination accuracy of the first connecting member 21, the second connecting member 22, and the pin 23,
This contributed to the cost increase.
さらにアクセスを行う可動部に機構系を含むため、可
動部質量が増大し、アクセスタイムが長くなるという問
題もあった。Further, since the movable part to be accessed includes a mechanical system, the mass of the movable part increases, and there is a problem that the access time becomes longer.
本発明は前記課題を鑑み、アクセス可動部に特別な回
動機構や並進機構を含まない磁気ヘッド４のカートリッ
ジ３からの回避構造を有し、磁気ヘッド４と光学ヘッド
２の相対位置が安定な光磁気記録再生装置を提供するも
のである。In view of the above problem, the present invention has a structure for avoiding the magnetic head 4 from the cartridge 3 without including a special rotating mechanism and translation mechanism in the movable access portion, and the relative position between the magnetic head 4 and the optical head 2 is stable. An object of the present invention is to provide a magneto-optical recording / reproducing apparatus.
課題を解決するための手段 この目的を達成するために本発明の光磁気記録再生装
置は、光磁気ディスクに記録再生消去用の光スポットを
与え前記光磁気ディスクの略半径方向に移動可能な光学
ヘッドと、前記光磁気ディスクに接近して前記光磁気デ
ィスクから前記光磁気ディスクの記録面に略垂直な方向
の抗力を受け前記記録面と略一定の距離を維持しつつ前
記記録面の前記光スポットの照射位置に記録消去用の磁
界を付与する磁気ヘッドと、前記磁気ヘッドを前記光磁
気ディスクの略半径方向に移動させるシーク機構と、一
端に前記磁気ヘッドを取り付け弾性変形により前記磁気
ヘッドが受ける前記抗力とつり合う力を発生させる第１
の弾性体及び前記記録面に略垂直な方向に弾性変形可能
で一端に前記第１の弾性体を接続し他端に前記シーク機
構を接続した第２の弾性体からなる磁気ヘッド支持部
と、前記光磁気ディスクの略半径方向で外周に向かう向
きを第１の向き、前記記録面に略垂直方向で前記磁気ヘ
ッドが前記光磁気ディスクから離れる向きを第２の向き
とし、前記第１の向きへの機械的変位を前記第２の向き
への機械的変位に変換する変位変換手段と、前記変位変
換手段の一部に構成された接近離脱部材とを備え、前記
変位変換手段により、前記光学ヘッドの前記第１の向き
への変位を利用して前記近接離脱部材を前記第２の向き
へ移動させ前記第２の弾性体に係合させることで前記第
２の弾性体を前記第２の向きへ弾性変形させて前記磁気
ヘッドを前記光磁気ディスクに対して接近離脱させるよ
うに構成されている。Means for Solving the Problems In order to achieve this object, a magneto-optical recording / reproducing apparatus according to the present invention provides a magneto-optical disk with an optical spot for recording / reproducing and erasing which is movable in a substantially radial direction of the magneto-optical disk. A head, which receives the drag in a direction substantially perpendicular to the recording surface of the magneto-optical disk from the magneto-optical disk approaching the magneto-optical disk and maintains the light on the recording surface at a substantially constant distance from the recording surface; A magnetic head for applying a magnetic field for recording and erasing to a spot irradiation position, a seek mechanism for moving the magnetic head in a substantially radial direction of the magneto-optical disk, and attaching the magnetic head to one end to form the magnetic head by elastic deformation. First to generate a force that balances the drag received
A magnetic head support portion comprising an elastic body and a second elastic body elastically deformable in a direction substantially perpendicular to the recording surface and having one end connected to the first elastic body and the other end connected to the seek mechanism; A first direction refers to a direction toward the outer periphery in a substantially radial direction of the magneto-optical disk, and a second direction refers to a direction in which the magnetic head separates from the magneto-optical disk in a direction substantially perpendicular to the recording surface. A displacement converting means for converting a mechanical displacement toward the second direction into a mechanical displacement in the second direction; and an approaching / separating member formed as a part of the displacement converting means. Using the displacement of the head in the first direction, moving the approach / separation member in the second direction and engaging the second elastic body with the second elastic body, thereby moving the second elastic body to the second elastic body. Elastically deforms the magnetic head to the magneto-optical It is configured to close disengaged against disk.
作用 この構成によって、従来光学ヘッドに有していた機構
系の介在による磁気ヘッドと光学ヘッドの相対位置の機
構的外乱による変動が大幅に減少するため記録，消去動
作が安定し、またアクセスを行う可動部の質量が減少す
るためアクセスタイムの短縮を行うことができる。Operation With this configuration, the fluctuation of the relative position between the magnetic head and the optical head due to mechanical disturbance due to the intervention of the mechanical system conventionally provided in the optical head is greatly reduced, so that the recording and erasing operations are stabilized and the access is performed. Since the mass of the movable part is reduced, the access time can be reduced.
実施例 以下本発明の一実施例の光磁気記録再生装置につい
て、図面を参照しながら説明する。ここでは浮上型の磁
気ヘッドを用いた場合の例を説明する。第１図（ａ）〜
（ｃ）は本発明の一実施例における光磁気記録再生装置
を示す図である。第１図（ａ）はその平面図、（ｂ），
（ｃ）はその側面図で各種状態を示すものである。第１
図（ａ）〜（ｃ）で、１は光磁気ディスク、２は光学ヘ
ッド、３はカートリッジ、４は磁気ヘッド、５はターン
テーブル、６はスピンドルモータ、７はケースで、カー
トリッジ３の移動機構を含めこれらは従来例と同じもの
である。また、第１の弾性体８は従来例の板ばね24と形
状は異なるが同じ機能を果たす。また座標軸の方向は第
１図（ａ），（ｂ）に示すように従来例と同じである。
12は光学ヘッド２と磁気ヘッド４の相対位置を維持する
ための接続部材で、従来例の第１の接続部材21と第２の
接続部材22を一体化したものに相当する。11は第２の弾
性体でその両端を第１の弾性体８と接続部材12に接続さ
れており、弾性変形により磁気ヘッド４の略ｚ方向への
移動が行われる。また、第２の弾性体11は第１の弾性体
８よりもばね定数が十分大きい構造である。13〜18は光
学ヘッド２のｘ軸方向への変位をｙ軸方向への変位に変
換することで第２の弾性体11を変形させる変位変換手段
を構成する部材であって、13の上下ロッドはＬ字状の形
状で、ｚ軸方向に延びた角柱状の部分とｙ軸方向に延び
た円柱状の部分から構成され、上下ロッド13の角柱状の
部分は角穴を有する角柱状の部材であるロッドホルダ14
に挿入されており、上下ロッド13はロッドホルダ14に対
しｚ軸方向に摺動自在である。17はＬ字状をしたレバー
で、ｙ軸方向を軸中心とするピン16の回りに回動自在に
なっており、一端は上下ロッド13の下方端部に接触し、
他端は少なくとも光学ヘッド２が記録領域の最外周より
も外周位置にアクセスした時に突起部17aが接続部材12
に接触する。15のレバーホルダはケース７もしくはケー
ス７に対し相対運動をしない部分に固定されており、ロ
ッドホルダ14とピン16のケース７に対する相対位置を保
持し、上下ロッド13及びレバー17の運動方向をロッドホ
ルダ14及びピン16を介して制限する。またレバーホルダ
15とレバー17の間にはレバー17に対し反時計回りの回動
付勢力を与えるためのばね18が設けられている（第１図
（ａ）には図示せず）。Embodiment Hereinafter, a magneto-optical recording and reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. Here, an example in which a flying magnetic head is used will be described. Fig. 1 (a)-
FIG. 1C is a diagram showing a magneto-optical recording / reproducing apparatus according to one embodiment of the present invention. FIG. 1 (a) is a plan view thereof, and (b),
(C) is a side view showing various states. First
1A to 1C, reference numeral 1 denotes a magneto-optical disk, 2 denotes an optical head, 3 denotes a cartridge, 4 denotes a magnetic head, 5 denotes a turntable, 6 denotes a spindle motor, and 7 denotes a case. These are the same as the conventional example. The first elastic body 8 has a different shape from that of the conventional leaf spring 24, but performs the same function. The directions of the coordinate axes are the same as in the conventional example, as shown in FIGS. 1 (a) and 1 (b).
Reference numeral 12 denotes a connecting member for maintaining a relative position between the optical head 2 and the magnetic head 4, and corresponds to a unit in which a first connecting member 21 and a second connecting member 22 of a conventional example are integrated. Reference numeral 11 denotes a second elastic body, both ends of which are connected to the first elastic body 8 and the connecting member 12, and the magnetic head 4 is moved in the substantially z direction by elastic deformation. Further, the second elastic body 11 has a structure in which the spring constant is sufficiently larger than that of the first elastic body 8. Reference numerals 13 to 18 denote members constituting displacement conversion means for deforming the second elastic body 11 by converting the displacement of the optical head 2 in the x-axis direction into the displacement in the y-axis direction. Is an L-shape, is composed of a prismatic portion extending in the z-axis direction and a cylindrical portion extending in the y-axis direction, and the prismatic portion of the upper and lower rods 13 is a prismatic member having a square hole. Rod holder 14
And the upper and lower rods 13 are slidable in the z-axis direction with respect to the rod holder 14. Reference numeral 17 denotes an L-shaped lever, which is rotatable around a pin 16 whose axis is the y-axis direction, one end of which contacts the lower end of the upper and lower rods 13,
At the other end, at least when the optical head 2 accesses the outer peripheral position than the outermost peripheral position of the recording area, the projecting portion 17a
Contact The lever holder 15 is fixed to the case 7 or a portion that does not move relative to the case 7, holds the relative position of the rod holder 14 and the pin 16 with respect to the case 7, and controls the movement direction of the upper and lower rods 13 and the lever 17 by the rod. The restriction is made via the holder 14 and the pin 16. Also lever holder
A spring 18 is provided between the lever 15 and the lever 17 to apply a counterclockwise rotational urging force to the lever 17 (not shown in FIG. 1A).
以上のように構成された光磁気記録再生装置につい
て、以下その動作について説明する。The operation of the magneto-optical recording / reproducing apparatus configured as described above will be described below.
まず、第１図（ｂ）の様に、光磁気ディスク１を内蔵
したカートリッジ３が挿入口7aから挿入されて後方に進
み、光磁気ディスク１の回転中心軸とターンテーブル５
の回転中心軸が略同一直線上となる位置で静止する。こ
の時、光学ヘッド２は光磁気ディスク１の記録領域の最
外周に該当する位置より後方に位置しており、接続部材
12がレバー17の突起部17aに接触してレバー17を後方に
押している。レバー17はピン16の回りに回動自在である
から、接続部材12の後方への移動をばね18の付勢力に対
抗してピン16回りの時計方向回りの運動に変換し、上下
ロッド13の接触点を上方に上げ、上下ロッド13を上方に
移動させている。上下ロッド13は第２の弾性体11に接触
して第２の弾性体11が弾性変形し、第１の弾性体８を介
して先端に取り付けられた磁気ヘッド４は光磁気記録再
生装置内部の上方に位置し、カートリッジ３との衝突を
避ける。First, as shown in FIG. 1 (b), the cartridge 3 containing the magneto-optical disk 1 is inserted from the insertion slot 7a and proceeds backward, and the rotation center axis of the magneto-optical disk 1 and the turntable 5 are turned on.
Stand still at a position where the rotation center axes are substantially on the same straight line. At this time, the optical head 2 is located behind the position corresponding to the outermost periphery of the recording area of the magneto-optical disk 1, and the connecting member
12 contacts the projection 17a of the lever 17 and pushes the lever 17 backward. Since the lever 17 is rotatable about the pin 16, the backward movement of the connecting member 12 is converted into a clockwise movement around the pin 16 against the urging force of the spring 18, and the upper and lower rods 13 are moved. The contact point is raised upward, and the upper and lower rods 13 are moved upward. The upper and lower rods 13 come into contact with the second elastic body 11 so that the second elastic body 11 is elastically deformed, and the magnetic head 4 attached to the distal end via the first elastic body 8 moves the magnetic head 4 inside the magneto-optical recording / reproducing apparatus. It is located above and avoids collision with the cartridge 3.
次に第１図（ｃ）に示すように、カートリッジ３は下
方に移動して光磁気ディスク１がターンテーブル５に装
着され、内蔵した光磁気ディスク１がカートリッジ３の
内壁と接触しない位置で静止する。この時光学ヘッド２
はカートリッジ３のアクセス穴に挿入され、光磁気ディ
スク１に対し収束したレーザ光を与えうる状態となる。
この状態でスピンドルモータ６がターンテーブル５を介
して光磁気ディスク１にｚ軸回りのトルクを与え、光磁
気ディスク１を所定の回転数で回転させる。Next, as shown in FIG. 1 (c), the cartridge 3 moves downward, the magneto-optical disc 1 is mounted on the turntable 5, and the built-in magneto-optical disc 1 is stopped at a position where it does not contact the inner wall of the cartridge 3. I do. At this time, the optical head 2
Is inserted into the access hole of the cartridge 3 so that a converged laser beam can be given to the magneto-optical disk 1.
In this state, the spindle motor 6 applies a torque around the z-axis to the magneto-optical disk 1 via the turntable 5 to rotate the magneto-optical disk 1 at a predetermined rotation speed.
その後光学ヘッド２が前方へ移動することで突起部17
aは接続部材12から離れ、レバー17はばね18により反時
計回りに回動し、レバー17の前端に接触した上下ロッド
13がロッドホルダ14を摺動降下して第２の弾性体11から
離れ、磁気ヘッド４は光磁気ディスク上に降下し、光磁
気ディスク１の回転によって生じた空気流による揚力
と、第１の弾性体８の押し付け力がつり合う位置で光磁
気ディスク１に対して位置する。情報の記録，消去に関
する動作は従来例と同様であるため省略する。Thereafter, when the optical head 2 moves forward, the projection 17
a is separated from the connecting member 12, the lever 17 is rotated counterclockwise by the spring 18, and the upper and lower rods contact the front end of the lever 17.
13 slides down the rod holder 14 and separates from the second elastic body 11, the magnetic head 4 descends on the magneto-optical disk, and the lift caused by the air flow generated by the rotation of the magneto-optical disk 1 The elastic body 8 is located on the magneto-optical disk 1 at a position where the pressing force is balanced. The operations relating to the recording and erasing of information are the same as in the conventional example, and will not be described.
磁気ヘッド４は第１の弾性体８、第２の弾性体11、接
続部材12を介して光学ヘッド２に接続されているため、
光学ヘッド２が矢印Ａ方向の任意の位置に存在しても、
磁気ヘッド４は常に収束したレーザ光の照射される位置
に記録，消去用の磁界を与えることができる。また、第
２の弾性体11は第１の弾性体８に対し比較的ばね定数が
大きいため、磁気ヘッド４が光磁気ディスク１に降下し
た後は第２の弾性体はほぼ剛体的であると見なすことが
でき、従来例に比べ磁気ヘッド４の揚力特性、振動特性
が劣ることはない。Since the magnetic head 4 is connected to the optical head 2 via the first elastic body 8, the second elastic body 11, and the connecting member 12,
Even if the optical head 2 exists at an arbitrary position in the direction of arrow A,
The magnetic head 4 can always apply a recording and erasing magnetic field to a position irradiated with the converged laser light. Further, since the second elastic body 11 has a relatively large spring constant with respect to the first elastic body 8, it is assumed that the second elastic body is substantially rigid after the magnetic head 4 has dropped onto the magneto-optical disk 1. It can be considered that the lift characteristics and the vibration characteristics of the magnetic head 4 are not inferior to those of the conventional example.
以上のように本実施例によれば、接続部材12には機構
が存在しないため、光学ヘッド２にアクセス動作や外乱
による加速度が生じていても磁気ヘッド４と光学ヘッド
２の相対位置関係は変動することはない。また従来例に
比べ、アクセス動作を行う可動部に機構が存在しないた
め、可動部の質量が減少し、アクセスタイムの短縮が図
れる。そして従来例のような回動部の駆動機構を必要と
しないため、装置のスペースファクタが向上し、小型化
を図ることも容易となる。なお、本実施例では磁気ヘッ
ド４として浮上型のものを例に挙げたが、摺動型の磁気
ヘッドを用いた場合でも本発明は全く同様に優れた効果
を発揮する。As described above, according to the present embodiment, since the connection member 12 has no mechanism, the relative positional relationship between the magnetic head 4 and the optical head 2 varies even if acceleration occurs due to an access operation or disturbance in the optical head 2. I will not do it. Further, as compared with the conventional example, since there is no mechanism in the movable part performing the access operation, the mass of the movable part is reduced, and the access time can be shortened. In addition, since a driving mechanism for the rotating portion as in the conventional example is not required, the space factor of the device is improved, and it is easy to reduce the size. In the present embodiment, a floating type magnetic head 4 is described as an example. However, the present invention exerts excellent effects even when a sliding type magnetic head is used.
発明の効果 本発明は光磁気ディスクに記録再生消去用の光スポッ
トを与え前記光磁気ディスクの略半径方向に移動可能な
光学ヘッドと、前記光磁気ディスクに接近して前記光磁
気ディスクから前記光磁気ディスクの記録面に略垂直な
方向の抗力を受け前記記録面と略一定の距離を維持しつ
つ前記記録面の前記光スポットの照射位置に記録消去用
の磁界を付与する磁気ヘッドと、前記磁気ヘッドを前記
光磁気ディスクの略半径方向に移動させるシーク機構
と、一端に前記磁気ヘッドを取り付け弾性変形により前
記磁気ヘッドが受ける前記抗力とつり合う力を発生させ
る第１の弾性体及び前記記録面に略垂直な方向に弾性変
形可能で一端に前記第１の弾性体を接続し他端に前記シ
ーク機構を接続した第２の弾性体からなる磁気ヘッド支
持部と、前記光磁気ディスクの略半径方向で外周に向か
う向きを第１の向き、前記記録面に略垂直方向で前記磁
気ヘッドが前記光磁気ディスクから離れる向きを第２の
向きとし、前記第１の向きへの機械的変位を前記第２の
向きへの機械的変位に変換する変位変換手段と、前記変
位変換手段の一部に構成された接近離脱部材とを備え、
前記変位変換手段により、前記光学ヘッドの前記第１の
向きへの変位を利用して前記近接離脱部材を前記第２の
向きへ移動させ前記第２の弾性体に係合させることで前
記第２の弾性体を前記第２の向きへ弾性変形させて前記
磁気ヘッドを前記光磁気ディスクに対して接近離脱させ
ることにより、磁気ヘッドと光学ヘッドの相対位置の機
構的外乱による変動が大幅に減少するため記録，消去動
作が安定するため応用範囲が拡大し、またアクセスを行
う可動部の質量が減少するため光学ヘッドをより高速に
移動させることが可能となり、アクセスタイムの短縮を
行うことができる。さらに磁気ヘッドの光磁気ディスク
への衝突といった事故の発生する可能性が減少するた
め、データの信頼性、装置寿命が向上する。そして機構
構造の削減によりコストダウンが期待できる。また光学
ヘッドの運転を磁気ヘッドの光磁気ディスクへの接近手
段に利用することで、ローディングメカニズムがコンパ
クトにできるという数々の優れた効果を得ることのでき
る光磁気記録再生装置を実現できるものである。The present invention provides an optical head which gives a light spot for recording / reproduction and erasure to a magneto-optical disk and is movable in a substantially radial direction of the magneto-optical disk; A magnetic head that receives a drag in a direction substantially perpendicular to the recording surface of the magnetic disk and applies a magnetic field for recording and erasing to the irradiation position of the light spot on the recording surface while maintaining a substantially constant distance from the recording surface; A seek mechanism for moving a magnetic head in a substantially radial direction of the magneto-optical disk, a first elastic body having the magnetic head attached to one end and generating a force that balances the drag received by the magnetic head by elastic deformation, and the recording surface A magnetic head supporting portion comprising a second elastic body elastically deformable in a direction substantially perpendicular to the first elastic body and having one end connected to the first elastic body and the other end connected to the seek mechanism; The first direction is defined as the direction toward the outer periphery in the substantially radial direction of the magneto-optical disk, and the second direction is defined as the direction in which the magnetic head is separated from the magneto-optical disk in a direction substantially perpendicular to the recording surface. A displacement converting means for converting a mechanical displacement into a mechanical displacement in the second direction, and an approach / separation member configured as a part of the displacement converting means,
The displacement converting means moves the proximity detachment member in the second direction by using the displacement of the optical head in the first direction and engages the second separation member with the second elastic body. The elastic body is elastically deformed in the second direction to move the magnetic head toward and away from the magneto-optical disk, thereby greatly reducing the fluctuation of the relative position between the magnetic head and the optical head due to mechanical disturbance. Therefore, the recording and erasing operations are stabilized, so that the application range is expanded. In addition, since the mass of the movable portion for accessing is reduced, the optical head can be moved at a higher speed, and the access time can be shortened. Further, the possibility of occurrence of an accident such as collision of the magnetic head with the magneto-optical disk is reduced, so that data reliability and device life are improved. Cost reduction can be expected by reducing the mechanism structure. Also, by utilizing the operation of the optical head as a means for approaching the magnetic head to the magneto-optical disk, a magneto-optical recording / reproducing apparatus can be realized which can achieve a number of excellent effects such as a compact loading mechanism. .
第１図（ａ）は本発明の一実施例における光磁気記録再
生装置の平面図、第１図（ｂ），（ｃ）は本発明の一実
施例における光磁気記録再生装置の側面図、第２図
（ａ）は従来例における光磁気記録再生装置の平面図、
第２図（ｂ），（ｃ）は従来例における光磁気記録再生
装置の側面図である。 １……光磁気ディスク、２……光学ヘッド、３……カー
トリッジ、４……磁気ヘッド、５……ターンテーブル、
６……スピンドルモータ、７……ケース、８……第１の
弾性体、11……第２の弾性体、12……接続部材、13……
上下ロッド、14……ロッドホルダ、15……レバーホル
ダ、16……ピン、17……レバー、18……ばね。FIG. 1A is a plan view of a magneto-optical recording and reproducing apparatus according to one embodiment of the present invention, and FIGS. 1B and 1C are side views of the magneto-optical recording and reproducing apparatus according to one embodiment of the present invention. FIG. 2A is a plan view of a conventional magneto-optical recording and reproducing apparatus,
2 (b) and 2 (c) are side views of a conventional magneto-optical recording / reproducing apparatus. 1 ... magneto-optical disk, 2 ... optical head, 3 ... cartridge, 4 ... magnetic head, 5 ... turntable,
6 ... Spindle motor, 7 ... Case, 8 ... First elastic body, 11 ... Second elastic body, 12 ... Connecting member, 13 ...
Vertical rod, 14 Rod holder, 15 Lever holder, 16 Pin, 17 Lever, 18 Spring.
Claims (7)
ットを与え前記光磁気ディスクの略半径方向に移動可能
な光学ヘッドと、前記光磁気ディスクに接近して前記光
磁気ディスクから前記光磁気ディスクの記録面に略垂直
な方向の抗力を受け前記記録面と略一定の距離を維持し
つつ前記記録面の前記光スポットの照射位置に記録消去
用の磁界を付与する磁気ヘッドと、前記磁気ヘッドを前
記光磁気ディスクの略半径方向に移動させるシーク機構
と、一端に前記磁気ヘッドを取り付け弾性変形により前
記磁気ヘッドが受ける前記抗力とつり合う力を発生させ
る第１の弾性体及び前記記録面に略垂直な方向に弾性変
形可能で一端に前記第１の弾性体を接続し他端に前記シ
ーク機構を接続した第２の弾性体からなる磁気ヘッド支
持部と、前記光磁気ディスクの略半径方向で外周に向か
う向きを第１の向き、前記記録面に略垂直方向で前記磁
気ヘッドが前記光磁気ディスクから離れる向きを第２の
向きとし、前記第１の向きへの機械的変位を前記第２の
向きへの機械的変位に変換する変位変換手段と、前記変
位変換手段の一部に構成された接近離脱部材とを備え、
前記変位変換手段により、前記光学ヘッドの前記第１の
向きへの変位を利用して前記近接離脱部材を前記第２の
向きへ移動させ前記第２の弾性体に係合させることで前
記第２の弾性体を前記第２の向きへ弾性変形させて前記
磁気ヘッドを前記光磁気ディスクに対して接近離脱させ
ることを特徴とする光磁気記録再生装置。An optical head which provides a light spot for recording / reproduction and erasure to the magneto-optical disk and is movable in a substantially radial direction of the magneto-optical disk; A magnetic head for receiving a drag in a direction substantially perpendicular to the recording surface of the disc and applying a magnetic field for recording and erasing to the irradiation position of the light spot on the recording surface while maintaining a substantially constant distance from the recording surface; A seek mechanism for moving the head in a substantially radial direction of the magneto-optical disk; a first elastic body that attaches the magnetic head to one end and generates a force that balances the drag received by the magnetic head by elastic deformation; A magnetic head supporting portion made of a second elastic body elastically deformable in a substantially vertical direction and having one end connected to the first elastic body and the other end connected to the seek mechanism; A direction toward the outer periphery in a substantially radial direction of the disk is a first direction, and a direction in which the magnetic head is separated from the magneto-optical disk in a direction substantially perpendicular to the recording surface is a second direction. A displacement converting means for converting a mechanical displacement into a mechanical displacement in the second direction, and an approach / separation member configured as a part of the displacement converting means,
The displacement converting means moves the proximity detachment member in the second direction by using the displacement of the optical head in the first direction and engages the second separation member with the second elastic body. A magneto-optical recording / reproducing apparatus characterized in that the elastic body is elastically deformed in the second direction to move the magnetic head toward and away from the magneto-optical disk.
前記光学ヘッドに剛に固定された部材の一部からなる第
１の接触領域に接触する第１の接触部と、第２の弾性体
の一部または前記第２の弾性体に剛に固定された部材の
一部からなる第２の接触領域に接触する接近離脱部材の
一部である第２の接触部とを有し、前記第１の接触部が
前記第１の接触領域に接触していない場合は前記第２の
接触部は前記第２の接触領域に接触せず、前記光学ヘッ
ドが光磁気ディスクの記録領域の最外周部より少なくと
も外周に位置した際に前記第１の接触部が前記第１の接
触領域に接触して前記第１の接触部が第１の向きに変位
し、前記第２の接触部が第２の向きに変位して前記第２
の接触領域に接触することにより前記第２の弾性体を前
記光磁気ディスクから離れる向きに弾性変形させること
を特徴とする請求項（１）記載の光磁気記録再生装置。A first contact portion for contacting a first contact area formed by a part of the optical head or a member rigidly fixed to the optical head; and a second elastic member. A second contact portion that is a part of an approaching / separating member that contacts a second contact region that is a part of a body or a part of a member that is rigidly fixed to the second elastic body; When the first contact portion does not contact the first contact region, the second contact portion does not contact the second contact region, and the optical head moves the outermost periphery of the recording region of the magneto-optical disk. The first contact portion contacts the first contact region when the first contact portion contacts the first contact region when the first contact portion is displaced in the first direction, and In the direction of the second
2. The magneto-optical recording / reproducing apparatus according to claim 1, wherein the second elastic body is elastically deformed in a direction away from the magneto-optical disk by contacting the second elastic body.
最外周部から前記最外周部を含んで内周側に位置した際
には、第１の接触部が第１の接触領域から分離している
ことを特徴とする請求項（２）記載の光磁気記録再生装
置。3. When the optical head is located from the outermost peripheral portion of the recording area of the magneto-optical disk to the inner peripheral side including the outermost peripheral portion, the first contact portion separates from the first contact region. 3. The magneto-optical recording / reproducing apparatus according to claim 2, wherein:
数が大きいことを特徴とする請求項（１）記載の光磁気
記録再生装置。4. The magneto-optical recording / reproducing apparatus according to claim 1, wherein the second elastic body has a larger spring constant than the first elastic body.
の略半径方向に移動させるための機構であることを特徴
とする請求項（１）記載の光磁気記録再生装置。5. The magneto-optical recording / reproducing apparatus according to claim 1, wherein the seek mechanism is a mechanism for moving the optical head in a substantially radial direction of the magneto-optical disk.
部ケースに対して相対運動を行わない静止部と、第１の
向きと第２の向きを含む面に対して略垂直でかつ前記静
止部に剛に固定された軸を回動軸として前記回動軸の周
囲に回動が自在な回動部材と、少なくとも実質的な穴中
心軸が前記第２の向きに略平行であるガイド穴を有する
前記静止部に剛に固定されたパイプ状のガイド部材と、
前記ガイド部材の前記ガイド穴に少なくとも一部が挿入
され前記ガイド穴に従って前記第２の向きに平行な方向
に移動自在な接近離脱部材である並進部材と、前記回動
部材には一端に第１の接触部と前記回動軸を挟んで他端
に前記並進部材が接触する第１係合部とが存在し、前記
並進部材には第２の接触部と前記回動に材の前記第１係
合部が接触する第２係合部とが存在し、前記第１の接触
部を前記第１の方向の逆の方向に移動させる向きに前記
回動部材を回動させる荷重を与える荷重付加手段とを有
し、前記回動部材の前記第１の接触部が前記第１の方向
に変位することで前記回動部材が前記回動軸回りに回動
し、前記第１係合部が前記第２係合部を介して前記並進
部材を前記第２の向きに変位させることにより前記第２
の接触部を前記第２の向きに変位させることを特徴とす
る請求項（２）、または（３）に記載の光磁気記録再生
装置。6. A displacement conversion means, comprising: a stationary portion which does not move relative to an outer case of the magneto-optical recording / reproducing apparatus; and a substantially perpendicular to a plane including a first direction and a second direction, and A rotation member rotatable around the rotation axis around a rotation axis rigidly fixed to the stationary portion, and a guide having at least a substantially central axis of the hole substantially parallel to the second direction; A pipe-shaped guide member rigidly fixed to the stationary portion having a hole,
A translating member that is at least partially inserted into the guide hole of the guide member and is movable in a direction parallel to the second direction according to the guide hole; And a first engaging portion that is in contact with the translation member at the other end with the rotation axis interposed therebetween. The translation member has a second contact portion and the first member of the material for the rotation. There is a second engaging portion with which the engaging portion comes into contact, and a load is applied to apply a load for rotating the rotating member in a direction to move the first contact portion in a direction opposite to the first direction. Means, and the first contact portion of the rotating member is displaced in the first direction, whereby the rotating member is rotated around the rotation axis, and the first engagement portion is By displacing the translation member in the second direction via the second engagement portion,
The magneto-optical recording / reproducing apparatus according to claim 2 or 3, wherein the contact portion is displaced in the second direction.
の回転によって生じる空気流による揚力であることを特
徴とする請求項（１）記載の光磁気記録再生装置。7. The magneto-optical recording / reproducing apparatus according to claim 1, wherein the drag received by the magnetic head is a lift due to an air flow generated by rotation of the magneto-optical disk.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15338389A JP2578980B2 (en) | 1989-06-15 | 1989-06-15 | Magneto-optical recording / reproducing device |
| EP90306461A EP0403266B1 (en) | 1989-06-15 | 1990-06-13 | Magneto-optical recording and/or reproducting apparatus |
| DE69011759T DE69011759T2 (en) | 1989-06-15 | 1990-06-13 | Magneto-optical recording and / or playback device. |
| US07/538,558 US5122998A (en) | 1989-06-15 | 1990-06-15 | Magneto-optical recording and reproducing apparatus having magnetic head vertically moving support |
| KR1019900008838A KR930006353B1 (en) | 1989-06-15 | 1990-06-15 | Magneto-optical recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15338389A JP2578980B2 (en) | 1989-06-15 | 1989-06-15 | Magneto-optical recording / reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0319160A JPH0319160A (en) | 1991-01-28 |
| JP2578980B2 true JP2578980B2 (en) | 1997-02-05 |
Family
ID=15561277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15338389A Expired - Fee Related JP2578980B2 (en) | 1989-06-15 | 1989-06-15 | Magneto-optical recording / reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2578980B2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2128338T3 (en) * | 1991-07-25 | 1999-05-16 | Canon Kk | RECORDING / REPRODUCTION METHOD OF MAGNETOOPTICAL INFORMATION USING A FLOATING SKATE THAT SUPPORTS A MAGNETIC HEAD AND APPARATUS FOR THE SAME. |
| TW209901B (en) * | 1992-01-27 | 1993-07-21 | Sony Co Ltd | |
| JP2541433B2 (en) * | 1992-11-16 | 1996-10-09 | ティアック株式会社 | Disk unit |
| JPH06349218A (en) * | 1993-04-12 | 1994-12-22 | Sony Corp | Magneto-optical disc device |
| JP2755104B2 (en) * | 1993-05-17 | 1998-05-20 | ティアック株式会社 | Disk unit |
| JP2663848B2 (en) * | 1993-11-10 | 1997-10-15 | ティアック株式会社 | Magnetic head load / unload drive |
| JPH0855449A (en) * | 1994-08-11 | 1996-02-27 | Sony Corp | Disk driving device |
| JP4920026B2 (en) * | 2008-11-27 | 2012-04-18 | 本田技研工業株式会社 | Motorcycle |
-
1989
- 1989-06-15 JP JP15338389A patent/JP2578980B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0319160A (en) | 1991-01-28 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |