JPS63129203U - - Google Patents
Info
- Publication number
- JPS63129203U JPS63129203U JP1889387U JP1889387U JPS63129203U JP S63129203 U JPS63129203 U JP S63129203U JP 1889387 U JP1889387 U JP 1889387U JP 1889387 U JP1889387 U JP 1889387U JP S63129203 U JPS63129203 U JP S63129203U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- pole piece
- magnetic field
- magnetic plate
- plate
- 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
- 238000010586 diagram Methods 0.000 description 4
- 230000004907 flux Effects 0.000 description 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図は本考案の一実施例により光磁気記録用
外部磁界発生装置を示す斜視図、第２図は第１図
のＸ―Ｘ線断面図、第３図は本実施例による外部
磁界発生装置の動作説明図、第４図は発生する磁
界強度と磁極片からの距離との関係を示す図、第
５図は従来の外部磁界発生装置の第１の構成例図
、第６図は従来の外部磁界発生装置の第２の構成
例図である。
１…磁気デイスク、２…永久磁石、３…軸、４
…電磁石、５，６，７…歯、９…磁性板、１０…
磁極片、１１…コイル、１２ａ，ｂ…磁束、１４
…磁界成分。
Fig. 1 is a perspective view showing an external magnetic field generation device for magneto-optical recording according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line X--X of Fig. 1, and Fig. 3 is an external magnetic field generation device according to the present embodiment. An explanatory diagram of the operation of the device, FIG. 4 is a diagram showing the relationship between the generated magnetic field strength and the distance from the magnetic pole piece, FIG. 5 is a diagram showing the first configuration example of a conventional external magnetic field generator, and FIG. FIG. 2 is a diagram showing a second configuration example of the external magnetic field generating device of FIG. 1... Magnetic disk, 2... Permanent magnet, 3... Axis, 4
...electromagnet, 5,6,7...teeth, 9...magnetic plate, 10...
Magnetic pole piece, 11... Coil, 12a, b... Magnetic flux, 14
...Magnetic field component.
Claims (1)
極片と、磁性板の前記一面上に密着し前記磁極片
を中心として径方向に広がるように偏平状に巻か
れ、電流の通電により前記磁極片との間に磁界を
発生させるコイルとを具備することを特徴とする
外部磁界発生装置。 a magnetic plate; a magnetic pole piece fixed perpendicularly to one surface of the magnetic plate; the magnetic plate is wound in a flat shape so as to be in close contact with the one surface of the magnetic plate and spread in the radial direction around the magnetic pole piece; An external magnetic field generating device comprising: a coil that generates a magnetic field between a magnetic pole piece;
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987018893U JPH0633523Y2 (en) | 1987-02-13 | 1987-02-13 | External magnetic field generator |
| US07/153,724 US4813007A (en) | 1987-02-13 | 1988-02-08 | External magnetic field generating device |
| EP88301127A EP0278756B1 (en) | 1987-02-13 | 1988-02-11 | Magnetic field generators |
| DE8888301127T DE3860837D1 (en) | 1987-02-13 | 1988-02-11 | MAGNETIC FIELD GENERATOR. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987018893U JPH0633523Y2 (en) | 1987-02-13 | 1987-02-13 | External magnetic field generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63129203U true JPS63129203U (en) | 1988-08-24 |
| JPH0633523Y2 JPH0633523Y2 (en) | 1994-08-31 |
Family
ID=30812990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987018893U Expired - Lifetime JPH0633523Y2 (en) | 1987-02-13 | 1987-02-13 | External magnetic field generator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0633523Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63191402U (en) * | 1987-03-16 | 1988-12-09 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61137201A (en) * | 1984-12-07 | 1986-06-24 | Olympus Optical Co Ltd | Impressing device of bias magnetic field |
| JPS62172504A (en) * | 1986-01-23 | 1987-07-29 | Sony Corp | Generator for high frequency modulation magnetic field |
-
1987
- 1987-02-13 JP JP1987018893U patent/JPH0633523Y2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61137201A (en) * | 1984-12-07 | 1986-06-24 | Olympus Optical Co Ltd | Impressing device of bias magnetic field |
| JPS62172504A (en) * | 1986-01-23 | 1987-07-29 | Sony Corp | Generator for high frequency modulation magnetic field |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63191402U (en) * | 1987-03-16 | 1988-12-09 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0633523Y2 (en) | 1994-08-31 |
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