JPS62273638A - Magneto-optical recording device - Google Patents
Magneto-optical recording deviceInfo
- Publication number
- JPS62273638A JPS62273638A JP11481086A JP11481086A JPS62273638A JP S62273638 A JPS62273638 A JP S62273638A JP 11481086 A JP11481086 A JP 11481086A JP 11481086 A JP11481086 A JP 11481086A JP S62273638 A JPS62273638 A JP S62273638A
- Authority
- JP
- Japan
- Prior art keywords
- film
- magnetic
- iron core
- recording medium
- recording
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 6
- 230000004907 flux Effects 0.000 abstract description 8
- 230000005389 magnetism Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000001747 pupil Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10532—Heads
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
- G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
〔産業上の利用分野〕
この発明は、光磁気記録装置に関し、さらζこ詳しくい
うと、光学手段と磁気手段とによって記録媒体上に情報
の記録、再生、消去を行う、情報メモリ装置ともいうこ
とができる光磁気記録装置に関するものである。Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] This invention relates to a magneto-optical recording device, and more specifically, the present invention relates to a magneto-optical recording device, and more specifically, a method for recording information on a recording medium by optical means and magnetic means. The present invention relates to a magneto-optical recording device, which can also be called an information memory device, for recording, reproducing, and erasing information.
第２図、第３図は、例えば、特開昭５８−１４６００１
３号公報に示された従来の光磁気記録装置であり、記録
媒体（１）は、基板（１ａ）、記録膜（１ｂ）、保護膜
（１Ｃ）からなり、光ヘッ、ド（２）からのレーザ光（
４）は基板（１ａ）を通過して記録膜（１ｂ）に集光、
照射される。Figures 2 and 3 are, for example, Japanese Patent Application Laid-Open No. 58-146001
This is a conventional magneto-optical recording device disclosed in Publication No. 3, in which the recording medium (1) consists of a substrate (1a), a recording film (1b), and a protective film (1C), and the recording medium (1) is composed of a substrate (1a), a recording film (1b), and a protective film (1C). Laser light (
4) passes through the substrate (1a) and focuses on the recording film (1b);
irradiated.
照射された膜部は温度上昇をきたし、その際、鉄心（３
ａ）、コイル（３１））からなる磁気機構（３）からの
磁化作用を施せば、膜部の磁気記録が行える。これが光
磁気記録の原理である。The temperature of the irradiated film increases, and at that time the iron core (3
a) Magnetic recording of the film portion can be performed by applying a magnetizing action from the magnetic mechanism (3) consisting of a coil (31)). This is the principle of magneto-optical recording.
以上のような従来の光磁気記録装置では、磁気機構（３
）、記録媒体（１）、光ヘッド（２）の配置関係に起因
する基本的な２つの問題点がある。In the conventional magneto-optical recording device as described above, a magnetic mechanism (3
), there are two basic problems caused by the arrangement relationship between the recording medium (1) and the optical head (2).
その第一は、磁気機構（３）が大型化することである。The first is that the magnetic mechanism (3) becomes larger.
その理由として、磁気機構（６）と記録媒体（１）の接
触を避けるために空気ギャップが必要となることと、磁
気機構（３）自体がオープン磁路であることであり、記
録膜（１ｂ）に必要な磁化の強さを考慮すると、コイル
（３ｂ）の巻数を増やさざるを得ないことが考えられる
。また、この大形化は磁化の高速変調が行えない欠点と
もなる。The reasons for this are that an air gap is required to avoid contact between the magnetic mechanism (6) and the recording medium (1), and that the magnetic mechanism (3) itself has an open magnetic path. ), it may be necessary to increase the number of turns of the coil (3b). Moreover, this large size also has the disadvantage that high-speed modulation of magnetization cannot be performed.
第二の問題点は、光ヘッド（２）と磁気機構（３）を共
に記録媒体（１）の半径方向への送りを行う必要上、そ
の送り機構が複雑となることである。と同時化高速送り
に対して極めて不利な構造である。The second problem is that the optical head (2) and the magnetic mechanism (3) must both be used to feed the recording medium (1) in the radial direction, making the feeding mechanism complicated. This structure is extremely disadvantageous for simultaneous high-speed feeding.
この発明はかかる問題点を解消するためになされたもの
で、磁気機構の小形化を達成し、高速変調および高速送
りが可能な光磁気記録装置を得ることを目的とする。The present invention was made to solve these problems, and aims to provide a magneto-optical recording device that achieves miniaturization of the magnetic mechanism and is capable of high-speed modulation and high-speed feeding.
この発明に係る光磁気記録装置は、記録媒体に磁性膜が
付加されており、記録媒体と光ヘッドとの中間に磁気機
構が弾性支持されている。光ヘッドからのレーザ光は磁
気機構の中空鉄心を通って記録膜に照射される。In the magneto-optical recording device according to the present invention, a magnetic film is added to the recording medium, and a magnetic mechanism is elastically supported between the recording medium and the optical head. Laser light from the optical head passes through the hollow core of the magnetic mechanism and irradiates the recording film.
この発明においては、磁気機構のコイルに通電すると、
中空鉄心の内筒部から磁束が記録媒体面に向って流れ、
この磁束と磁性膜との相互作用で鉄心が記録媒体に吸引
される。この吸引力と鉄心の弾性支持反力および鉄心と
保護膜との隙間１こ生じる空気圧反力とがバランスする
。かくして鉄心と記録媒体とは非接触の近接状態が安定
に確保される。In this invention, when the coil of the magnetic mechanism is energized,
Magnetic flux flows from the inner cylinder of the hollow core toward the recording medium surface,
The core is attracted to the recording medium due to the interaction between this magnetic flux and the magnetic film. This suction force, the elastic support reaction force of the iron core, and the air pressure reaction force generated by the gap between the iron core and the protective film are balanced. In this way, the iron core and the recording medium are stably maintained in close proximity without contact.
第１図はこの発明の一実施例を示し、図において、記録
媒体（１）は保護膜（１ａ）、記録膜（１ｂ入磁性膜（
１ｄ）、基板（１Ｃ）から形成されている。磁気機構（
３）はバネ（５）を介して光ヘッド（２）に支持されて
いる。FIG. 1 shows an embodiment of the present invention. In the figure, a recording medium (1) includes a protective film (1a), a recording film (1b) and a magnetic film (1b).
1d), is formed from a substrate (1C). Magnetic mechanism (
3) is supported by the optical head (2) via a spring (5).
以上の構成により光ヘッド（２）からのレーザ光（４）
は磁気機構（３）の中空の鉄心（３ｃ）内部を通って記
録膜（１ｂ）に集光照射される。そして磁気機構（３）
の磁気印加によって記録膜（１ｂ）に磁気記録が行われ
、光磁気記録が達成される。With the above configuration, the laser beam (4) from the optical head (2)
is focused and irradiated onto the recording film (1b) through the hollow core (3c) of the magnetic mechanism (3). And magnetic mechanism (3)
Magnetic recording is performed on the recording film (1b) by the magnetic application of , and magneto-optical recording is achieved.
以上の動作は従来の技術と同様である。この発明の主な
特長は、磁気機構（３）の動作番こある。すなわち磁気
印加すべくコイル（３ｄ）に電流を流すと中空の鉄心（
３Ｃ）の内筒部から磁束が記録媒体（１）の面に向って
流れる。その磁束と磁性膜（１ｄ）とが相互作用して、
鉄心（３Ｃ）は記録媒体（１）に吸引される。The above operation is similar to the conventional technology. The main feature of this invention is the operating speed of the magnetic mechanism (3). In other words, when a current is passed through the coil (3d) to apply magnetism, the hollow iron core (
Magnetic flux flows from the inner cylindrical portion of 3C) toward the surface of the recording medium (1). The magnetic flux and the magnetic film (1d) interact,
The iron core (3C) is attracted to the recording medium (1).
その吸引力とバ氷（５）反力および鉄心（３ｃ）と保護
膜（１Ｃ）との隙間に発生する空気圧反力とがバランス
する。その結果、鉄心（３Ｃ）と記録媒体（１）とは、
非接触の近接状態が安定に確保される。さらに、記録膜
（１ｂ）に作用する磁束は、膜面に垂直であり、従来装
置の磁気機構と比較するとはるかに磁束の有効利用を行
っている。記録膜（１ｂ）と鉄心（３ｃ）との空気ギャ
ップも従来装置よりもはるかに微小化でき、コイル（３
ｄ）の巻数の減少、ひいては磁気機構（３）の小形軽量
化が期待でき、磁気の高速変調も可能となる。また、か
かる小形化が可能なことから、磁気機構（３）を光ヘッ
ド（２）上に支持することができ、光ヘッド（２）と磁
気機構（３）との一体化が可能となる。その結果、光ヘ
ッド（２）の送り機構も簡素化でき、高速送りが容易と
なる。The suction force is balanced with the reaction force of the bar ice (5) and the air pressure reaction force generated in the gap between the iron core (3c) and the protective film (1C). As a result, the iron core (3C) and the recording medium (1) are
A non-contact proximity state is stably ensured. Furthermore, the magnetic flux acting on the recording film (1b) is perpendicular to the film surface, and the magnetic flux is used much more effectively than in the magnetic mechanism of the conventional device. The air gap between the recording film (1b) and the iron core (3c) can also be made much smaller than in conventional devices, and the coil (3c) can be made much smaller.
It is expected that the number of turns in d) will be reduced, and the magnetic mechanism (3) will be made smaller and lighter, and high-speed modulation of magnetism will also be possible. Further, since such miniaturization is possible, the magnetic mechanism (3) can be supported on the optical head (2), and the optical head (2) and the magnetic mechanism (3) can be integrated. As a result, the feeding mechanism of the optical head (2) can also be simplified, and high-speed feeding becomes easy.
さらに利点を付記する。記録媒体（１）は回転により面
振れが発生し、磁気機構（３）に対して上下動を繰返す
結果となる。つまり、この上下動は、従来装置の場合、
記録１（１１））にとって磁気変動となり問題点として
残るが、上記実施例の場合、空気ギャップは一定に保た
れるため、磁気変動は発生しない。Further advantages will be added. As the recording medium (1) rotates, surface runout occurs, resulting in repeated vertical movements relative to the magnetic mechanism (3). In other words, this vertical movement is
For recording 1 (11)), magnetic fluctuations result and remain a problem, but in the case of the above embodiment, since the air gap is kept constant, magnetic fluctuations do not occur.
この発明は、以上の説明から明らかなように、記録媒体
に磁性膜を付加し、弾性支持した磁気機構を記録媒体と
光ヘッドとの中間に配置し、レーザ光が磁気機構を通る
ようにしたので、磁気機構が小形＠量となり、磁気の高
速変調、光ヘッドの送り機構の簡素化および高速送りが
容易となる。As is clear from the above description, this invention adds a magnetic film to a recording medium, places an elastically supported magnetic mechanism between the recording medium and an optical head, and allows laser light to pass through the magnetic mechanism. Therefore, the magnetic mechanism becomes small in size, and high-speed magnetic modulation, simplification of the optical head feeding mechanism, and high-speed feeding are facilitated.
第１図はこの発明の一実施例の要部側断面図、第２図は
従来の光磁気記録装置の要部側断面図、第３図は第２図
のものの一部側断面図である。
（１）・・記録媒体、（１ａ）・・基板、（１ｂ）・・
記録膜、（１Ｃ）・・保護膜、（１ｄ）・・磁性膜、（
２）・・光ヘッド、（３）・・磁気機構、（６Ｃ）・・
中空の鉄心、（３（１）・・コイル、（４）・・レーｆ
ｉ１５）・・ハネ。
なお、各図中、同一符号は同−又は相当部分を示す。
１ ： 前殊１し帰
１ａ ： 蕃板
１ｂ −言ｔｏ 瞑
１Ｃ： 弾瞳膜
１ｄ ： Ａ性暎
２：ｌｆ、へ町ド
３：ｍ気畿構
３Ｃ： 中＋２０数Ｃす。
３ｄ ； コイル
４ ： Ｌ−ｒ’／ｅ。
５：ｌでキFIG. 1 is a side sectional view of a main part of an embodiment of the present invention, FIG. 2 is a side sectional view of a main part of a conventional magneto-optical recording device, and FIG. 3 is a partial side sectional view of the one shown in FIG. . (1)...Recording medium, (1a)...Substrate, (1b)...
Recording film, (1C)...protective film, (1d)...magnetic film, (
2)...Optical head, (3)...Magnetic mechanism, (6C)...
Hollow iron core, (3(1)...coil, (4)...ray f
i15)... Hane. In each figure, the same reference numerals indicate the same or corresponding parts. 1: Pre-jus 1 and return 1a: Bar board 1b - words to meditation 1C: Bullet pupil membrane 1d: A-sex 2: lf, hemachi do 3: mkiki structure 3C: Medium + 20 number C. 3d; Coil 4: L-r'/e. 5: key with l
Claims (3)
録媒体と、前記記録膜にレーザ光を照射する光ヘッドと
、この光ヘッドと前記記録媒体との中間に弾性支持によ
り配置され前記レーザ光が通る中空の鉄心およびコイル
からなる磁気機構とを備えてなる光磁気記録装置。(1) A recording medium consisting of a substrate, a magnetic film, a recording film, and a protective film, an optical head that irradiates the recording film with a laser beam, and an optical head arranged with elastic support between the optical head and the recording medium, and A magneto-optical recording device comprising a hollow iron core through which a laser beam passes and a magnetic mechanism consisting of a coil.
求の範囲第１項記載の光磁気記録装置。(2) The magneto-optical recording device according to claim 1, wherein the optical head and the magnetic mechanism are integrated.
る特許請求の範囲第２項記載の光磁気記録装置。(3) The magneto-optical recording device according to claim 2, wherein the magnetic mechanism is supported by the optical head via a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11481086A JPS62273638A (en) | 1986-05-21 | 1986-05-21 | Magneto-optical recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11481086A JPS62273638A (en) | 1986-05-21 | 1986-05-21 | Magneto-optical recording device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62273638A true JPS62273638A (en) | 1987-11-27 |
Family
ID=14647250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11481086A Pending JPS62273638A (en) | 1986-05-21 | 1986-05-21 | Magneto-optical recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62273638A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0323232A2 (en) * | 1987-12-26 | 1989-07-05 | Sharp Kabushiki Kaisha | Recording and reproducing device for magneto-optical card |
| US5287334A (en) * | 1989-07-29 | 1994-02-15 | Sony Corporation | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus |
-
1986
- 1986-05-21 JP JP11481086A patent/JPS62273638A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0323232A2 (en) * | 1987-12-26 | 1989-07-05 | Sharp Kabushiki Kaisha | Recording and reproducing device for magneto-optical card |
| EP0323232A3 (en) * | 1987-12-26 | 1990-12-05 | Sharp Kabushiki Kaisha | Recording and reproducing device for magneto-optical card |
| US5053611A (en) * | 1987-12-26 | 1991-10-01 | Sharp Kabushiki Kaisha | Device for reducing mechanical vibrations when utilizing a magneto-optical card as a recording medium |
| US5287334A (en) * | 1989-07-29 | 1994-02-15 | Sony Corporation | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus |
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