JPS6229607U - - Google Patents
Info
- Publication number
- JPS6229607U JPS6229607U JP12027585U JP12027585U JPS6229607U JP S6229607 U JPS6229607 U JP S6229607U JP 12027585 U JP12027585 U JP 12027585U JP 12027585 U JP12027585 U JP 12027585U JP S6229607 U JPS6229607 U JP S6229607U
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnets
- optical head
- yoke body
- drive mechanism
- medium
- 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
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図は本考案の一実施例を示すもので光磁気
デイスク装置の要部の斜視図、第２図は情報記録
状態の光磁気デイスク装置の要部の側面図、第３
図は情報消去状態の同要部の側面図、第４図は他
の実施例を示す同要部の側面図、第５図は従来例
を示すもので光磁気デイスク装置の要部の斜視図
、第６図は他の従来例を示す要部の断面図、第７
図は第６図における要部の側面図である。
１０……光ヘツド、１１……対物レンズ、Ａ…
…情報記録媒体、１３……外部磁界印加装置、１
４……ヨーク体、１５，１６……永久磁石、１７
……駆動機構、２１……磁気回路構成体。
FIG. 1 shows an embodiment of the present invention, and is a perspective view of the main parts of a magneto-optical disk device, FIG. 2 is a side view of the main parts of the magneto-optical disk device in an information recording state, and FIG.
The figure is a side view of the same essential parts in an information erased state, FIG. 4 is a side view of the same essential parts showing another embodiment, and FIG. 5 is a perspective view of the main parts of a magneto-optical disk device, showing a conventional example. , FIG. 6 is a sectional view of the main part showing another conventional example, and FIG.
The figure is a side view of the main parts in FIG. 6. 10... Optical head, 11... Objective lens, A...
... Information recording medium, 13 ... External magnetic field application device, 1
4... Yoke body, 15, 16... Permanent magnet, 17
... Drive mechanism, 21 ... Magnetic circuit structure.
Claims (1)
ぼ平板状のヨーク体と、このヨーク体の媒体側の
面にそれぞれ固定され、かつ、光ヘツドの走査領
域をカバーする長さを持ち、かつ、磁極Ｎ、Ｓの
向きが媒体面に垂直で互いに逆の２つの永久磁石
と、この永久磁石および前記ヨーク体よりなる磁
気回路構成体を２つの永久磁石が並ぶ方向に移動
させる駆動機構とを備え、情報記録か情報消去か
に応じて、前記駆動機構によりいずれか一方の永
久磁石を光ヘツドの対物レンズに対向させるよう
にした光磁気デイスク装置における外部磁界印加
装置。 A substantially flat yoke body facing the optical head with the information recording medium in between, each fixed to the medium side surface of the yoke body, and having a length that covers the scanning area of the optical head, and It includes two permanent magnets whose magnetic poles N and S are perpendicular to the medium surface and opposite to each other, and a drive mechanism that moves a magnetic circuit component consisting of the permanent magnets and the yoke body in the direction in which the two permanent magnets are aligned. An external magnetic field application device for a magneto-optical disk device, wherein the drive mechanism causes one of the permanent magnets to face an objective lens of an optical head depending on whether information is to be recorded or erased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12027585U JPS6229607U (en) | 1985-08-07 | 1985-08-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12027585U JPS6229607U (en) | 1985-08-07 | 1985-08-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6229607U true JPS6229607U (en) | 1987-02-23 |
Family
ID=31008440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12027585U Pending JPS6229607U (en) | 1985-08-07 | 1985-08-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6229607U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421735A (en) * | 1987-07-17 | 1989-01-25 | Teac Corp | Magneto-optical disk device |
-
1985
- 1985-08-07 JP JP12027585U patent/JPS6229607U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6421735A (en) * | 1987-07-17 | 1989-01-25 | Teac Corp | Magneto-optical disk device |
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