JPS60214438A - Optical magnetic head - Google Patents
Optical magnetic headInfo
- Publication number
- JPS60214438A JPS60214438A JP7209784A JP7209784A JPS60214438A JP S60214438 A JPS60214438 A JP S60214438A JP 7209784 A JP7209784 A JP 7209784A JP 7209784 A JP7209784 A JP 7209784A JP S60214438 A JPS60214438 A JP S60214438A
- Authority
- JP
- Japan
- Prior art keywords
- objective lens
- magnetic coil
- recording medium
- magneto
- 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
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
- 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)
Abstract
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、光磁気ヘッドにおける記録用磁気コイルの構
造に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to the structure of a recording magnetic coil in a magneto-optical head.
一般に、光磁気ヘッドにおいては、通常の光ヘッドに磁
場を印加するための磁気コイルを付加する必要がある。Generally, in a magneto-optical head, it is necessary to add a magnetic coil for applying a magnetic field to a normal optical head.
その−例を第１図に示す。第１図において、１１は光磁
気式記録媒体、１２は、１４で示される対物レンズ支持
具上面に薄膜で形成された記録用磁気コイル、１３は光
線を１１の記録媒体上に集光させるための対物レンズ、
１５は１３と１４を１軸もしくは２軸もしくは３軸方向
へ動かすためのアクチュエーター機構、１６はアクチュ
エーターを保護するカバー、１７は光線である。この例
において、１２の記録用磁気コイルには、電流供給用の
導線を接続する必要があるが、１２は１３と１４からな
る可動部分上にあるため、この導線が１５と１６からな
る固定部分との間に橋渡しする状態となる。そのため、
動作中にこの導線が切れたり、接続不良を起こす心配が
ある。そして、この導線の剛性が可動部分の動作に悪影
響を与え、正確なアクチェエート動作を妨げるという問
題があった。また、１４の上面に薄膜で磁気コイルを形
成することは、製作工程が複雑で高度な精密加工技術を
必要とする。An example of this is shown in FIG. In FIG. 1, 11 is a magneto-optical recording medium, 12 is a recording magnetic coil formed of a thin film on the upper surface of an objective lens support, and 13 is for condensing a light beam onto the recording medium 11. objective lens,
15 is an actuator mechanism for moving 13 and 14 in one, two, or three axes; 16 is a cover that protects the actuator; and 17 is a light beam. In this example, it is necessary to connect a conductor for current supply to the recording magnetic coil 12, but since 12 is on the movable part consisting of 13 and 14, this conductor is connected to the fixed part consisting of 15 and 16. It becomes a state of bridging between. Therefore,
There is a risk that this conductor may break during operation or cause a poor connection. There is a problem in that the rigidity of the conductive wire adversely affects the operation of the movable part and prevents accurate actuating operation. Furthermore, forming the magnetic coil with a thin film on the upper surface of 14 requires a complicated manufacturing process and requires advanced precision processing technology.
本発明の目的は、記録用磁気コイルをフレキシブル基盤
で作成し、これをアクチェエータ−カバー上面に接着す
ることにより、上記の問題点を解決する装置を提供する
ことにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus that solves the above-mentioned problems by making a recording magnetic coil from a flexible substrate and bonding it to the upper surface of an actuator cover.
本発明の光磁気ヘッドは、光線を光磁気式記録媒体に集
光させる対物レンズと前記対物レンズを支持する対物レ
ンズ支持具および、前記対物レンズと前記対物レンズ支
持具を１軸もしくは２軸もしくは３軸方向へ移動させる
アクチーエータ−機構とこれらを保護するカバーからな
る光磁気ヘッドにおいて、前記保護カバー上面にフレキ
シブル基板で構成された記録用磁気コイルを接着するこ
とを特徴とする。The magneto-optical head of the present invention includes an objective lens that focuses a light beam on a magneto-optical recording medium, an objective lens support that supports the objective lens, and a uniaxial, biaxial, or A magneto-optical head comprising an actuator mechanism that moves in three axial directions and a cover that protects them is characterized in that a recording magnetic coil made of a flexible substrate is bonded to the upper surface of the protective cover.
以下、本発明について実施例に基づき詳細に説明する。 Hereinafter, the present invention will be described in detail based on examples.
第２図に実施の一例を示す。第２図において、２１は光
磁気式記録゛媒体、２２はフレキシブル基板で構成され
た記録用磁気コイルで、２６で示されるアクチューエー
タ−カバー上面に接着されている。２３は光線を２１の
記録媒体上に集光させるための対物レンズ、２゛４は対
物レンズ支持具１２５は２３および２４を１軸もしくは
２軸もしくは３軸方向へ移動させるためのアクチュエー
ター機構、２７は光線である。２２のフレキシブル磁気
コイルに電流を流すことにより、２１の記録媒体上に記
録を行なう。An example of implementation is shown in FIG. In FIG. 2, 21 is a magneto-optical recording medium, 22 is a recording magnetic coil made of a flexible substrate, and is bonded to the upper surface of the actuator cover 26. 23 is an objective lens for condensing the light beam onto the recording medium 21; 2 and 4 are objective lens supports 125 and 27; an actuator mechanism for moving 23 and 24 in one, two, or three axes; is a ray of light. By passing a current through the flexible magnetic coil 22, recording is performed on the recording medium 21.
以上述べたように本発明に゛よれば、記録用磁気コイル
を固定部に設けるため、動作中に導線が切れたり、接続
不良を起こす心配もなく、そして、導線の剛性が可動部
分に影響を与えるということがないので、安定したアク
チェエート動作が行なえる。また、薄膜形成方法と比べ
て工程が極めて簡単で、技術的にも容易であるため、光
磁気ヘッド全体としての価格が安くなるという効果も有
する。As described above, according to the present invention, since the recording magnetic coil is provided in a fixed part, there is no fear that the conductor will break or a connection failure will occur during operation, and the rigidity of the conductor does not affect the movable part. Since there is no need to give anything, a stable actuate operation can be performed. Furthermore, since the process is extremely simple and technically easy compared to the thin film forming method, it also has the effect of lowering the price of the magneto-optical head as a whole.
第１図は、従来用いられていた光磁気ヘッドの記録用磁
気コイルの一実施例、第２図は、本発明による記録用磁
気コイルの一実施例を示す。
１１・・・・・・光磁気式記録媒体
１２・・・・・・記録用薄膜磁気コイル１３・・・・・
・対物レンズ
１４−・・・・対物レンズ支持具
１５・・・・・・対物レンズアクチュエーター機構１６
・・・・・・アクチュエーターカバー１７・・・・・・
光 線
２１・・・・・・光磁気式記録媒体
２２・・・・・・フレキシブル基板磁気コイル２３・・
・・・・対物レンズ
２４・・・・・・対物レンズ支持具
２５・・・・・・対物レンズアクチェエータ−機構２６
・・・・・・アクチュエーターカバー２７・・・・・・
光 線
第１図
〆Ｖ
第２図FIG. 1 shows an embodiment of a recording magnetic coil of a conventionally used magneto-optical head, and FIG. 2 shows an embodiment of a recording magnetic coil according to the present invention. 11...Magneto-optical recording medium 12... Thin film magnetic coil for recording 13...
- Objective lens 14 - Objective lens support 15 Objective lens actuator mechanism 16
...Actuator cover 17...
Light beam 21...Magneto-optical recording medium 22...Flexible substrate magnetic coil 23...
...Objective lens 24 ...Objective lens support 25 ...Objective lens actuator mechanism 26
...Actuator cover 27...
Ray Figure 1〆V Figure 2
Claims (1)
対物レンズを支持する対物レンズ支持具および、前記対
物レンズと前記対物レンズ支持具を１軸もしくは２Ｉｌ
ＩＩもしくは３軸方向へ移動させル、アクチュエーター
機構とわれらを保護するカッく−からなる光磁気ヘッド
において、前記保護カッ（−上面にフレキシブル基板で
構成された記録用磁気コイルを接着することを特徴とす
る光磁気ヘッド。An objective lens for condensing a light beam onto a magneto-optical recording medium, an objective lens support for supporting the objective lens, and an objective lens and an objective lens support for uniaxial or 2Il.
In a magneto-optical head consisting of a magneto-optical head that moves in two or three axial directions, an actuator mechanism, and a cup that protects them, it is preferable to adhere a recording magnetic coil made of a flexible substrate to the upper surface of the protective cup (-). Features a magneto-optical head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7209784A JPS60214438A (en) | 1984-04-11 | 1984-04-11 | Optical magnetic head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7209784A JPS60214438A (en) | 1984-04-11 | 1984-04-11 | Optical magnetic head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60214438A true JPS60214438A (en) | 1985-10-26 |
Family
ID=13479564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7209784A Pending JPS60214438A (en) | 1984-04-11 | 1984-04-11 | Optical magnetic head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60214438A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4706232A (en) * | 1985-10-17 | 1987-11-10 | Olympus Optical Co., Ltd. | Optical recording and reproducing apparatus |
| US4803674A (en) * | 1985-11-20 | 1989-02-07 | Hitachi, Ltd. | Magneto-optical recorder with small-sized, low-powered electromagnetic coil |
| US4843600A (en) * | 1985-09-13 | 1989-06-27 | Canon Kabushiki Kaisha | Recording head for magneto-optical information recording apparatus |
| US4868802A (en) * | 1986-07-28 | 1989-09-19 | Kabushiki Kaisha Toshiba | Magnetooptic recording and erasing head which performs biasing, tracking and focusing |
| WO1990003643A1 (en) * | 1988-09-20 | 1990-04-05 | Hewlett-Packard Company | Bias field switching system for magneto-optic disk drive |
| US4959820A (en) * | 1986-04-22 | 1990-09-25 | Sony Corporation | Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field |
| EP0411783A2 (en) * | 1989-07-29 | 1991-02-06 | Sony Corporation | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus |
| US5022018A (en) * | 1989-02-16 | 1991-06-04 | Minnesota Mining And Manufacturing Company | System for applying a perpendicular magnetic field to the illuminated side of a magneto-optic medium |
| US5287334A (en) * | 1989-07-29 | 1994-02-15 | Sony Corporation | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus |
| US5402293A (en) * | 1990-12-27 | 1995-03-28 | Sony Electronics Inc. | Magneto-optical head having a thin film coil recessed into a magnetic substrate |
| US5432763A (en) * | 1993-03-15 | 1995-07-11 | Hewlett-Packard Company | Subminiature rotary actuator optical head |
| US5650983A (en) * | 1993-04-28 | 1997-07-22 | Sony Corporation | Printed circuit board magnetic head for magneto-optical recording device |
-
1984
- 1984-04-11 JP JP7209784A patent/JPS60214438A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4843600A (en) * | 1985-09-13 | 1989-06-27 | Canon Kabushiki Kaisha | Recording head for magneto-optical information recording apparatus |
| US4706232A (en) * | 1985-10-17 | 1987-11-10 | Olympus Optical Co., Ltd. | Optical recording and reproducing apparatus |
| US4803674A (en) * | 1985-11-20 | 1989-02-07 | Hitachi, Ltd. | Magneto-optical recorder with small-sized, low-powered electromagnetic coil |
| US4959820A (en) * | 1986-04-22 | 1990-09-25 | Sony Corporation | Magnetooptical recording apparatus with constant leakage magnetic and pulse modulated magnetic field |
| US4868802A (en) * | 1986-07-28 | 1989-09-19 | Kabushiki Kaisha Toshiba | Magnetooptic recording and erasing head which performs biasing, tracking and focusing |
| US4977549A (en) * | 1988-09-20 | 1990-12-11 | Hewlett-Packard Company | Write and erase magnetic bias field switching system for a magneto-optic disk drive |
| WO1990003643A1 (en) * | 1988-09-20 | 1990-04-05 | Hewlett-Packard Company | Bias field switching system for magneto-optic disk drive |
| US5022018A (en) * | 1989-02-16 | 1991-06-04 | Minnesota Mining And Manufacturing Company | System for applying a perpendicular magnetic field to the illuminated side of a magneto-optic medium |
| EP0411783A2 (en) * | 1989-07-29 | 1991-02-06 | Sony Corporation | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus |
| US5287334A (en) * | 1989-07-29 | 1994-02-15 | Sony Corporation | Magneto-optical pickup apparatus and magneto-optical recording/reproducing apparatus |
| US5402293A (en) * | 1990-12-27 | 1995-03-28 | Sony Electronics Inc. | Magneto-optical head having a thin film coil recessed into a magnetic substrate |
| US5432763A (en) * | 1993-03-15 | 1995-07-11 | Hewlett-Packard Company | Subminiature rotary actuator optical head |
| US5650983A (en) * | 1993-04-28 | 1997-07-22 | Sony Corporation | Printed circuit board magnetic head for magneto-optical recording device |
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