JPS6456002U - - Google Patents
Info
- Publication number
- JPS6456002U JPS6456002U JP14940187U JP14940187U JPS6456002U JP S6456002 U JPS6456002 U JP S6456002U JP 14940187 U JP14940187 U JP 14940187U JP 14940187 U JP14940187 U JP 14940187U JP S6456002 U JPS6456002 U JP S6456002U
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- magneto
- optical disk
- reversing
- magnet
- 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
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Description
第１図はこの考案の一実施例による外部磁界発
生装置の斜視図、第２図は同外部磁界発生装置の
要部を示す斜視図、第３図は第１図の―線に
沿う断面図、第４図は第１図の―線に沿う断
面図、第５図は従来の外部磁界発生装置の斜視図
、第６図は光磁気デイスクの初期における着磁状
態を示す図、第７図は第５図の―線に沿う断
面図、第８図は記録後の光磁気デイスクの着磁状
態の一例を示す図、第９図は第５図の―線に
沿う断面図である。
１……光磁気デイスク、３……スピンドルモー
タ、５……記録用光ヘツド、６……消去用光ヘツ
ド、２６……回動モータ、２７，２９，３１，３
６……ギア、２８……磁石支持板、３４……磁石
。なお、図中、同一符号は同一または相当部分を
示す。
Fig. 1 is a perspective view of an external magnetic field generator according to an embodiment of the invention, Fig. 2 is a perspective view showing the main parts of the external magnetic field generator, and Fig. 3 is a sectional view taken along the line - in Fig. 1. , FIG. 4 is a sectional view taken along the line - in FIG. 1, FIG. 5 is a perspective view of a conventional external magnetic field generator, FIG. 6 is a diagram showing the initial magnetized state of the magneto-optical disk, and FIG. 7 5 is a sectional view taken along the line ``-'' in FIG. 5, FIG. 8 is a diagram showing an example of the magnetized state of the magneto-optical disk after recording, and FIG. 9 is a sectional view taken along the line ``-'' in FIG. 5. DESCRIPTION OF SYMBOLS 1... Magneto-optical disk, 3... Spindle motor, 5... Optical head for recording, 6... Optical head for erasing, 26... Rotating motor, 27, 29, 31, 3
6... Gear, 28... Magnet support plate, 34... Magnet. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
クの中心点に対して円周方向の異なる位置に配設
され、前記光磁気デイスクの記録または消去を行
う複数の光ヘツドとを備え、これら複数の光ヘツ
ドに対して磁界を発生させる外部磁界発生装置に
おいて、前記光磁気デイスクの厚さ方向に磁界を
発生させる磁石と、この磁石の極性を反転させる
反転駆動手段と、前記磁石を前記光磁気デイスク
の円周方向に回動させる回動駆動手段とを備えた
ことを特徴とする外部磁界発生装置。 It comprises a disk-shaped magneto-optical disk and a plurality of optical heads arranged at different positions in the circumferential direction with respect to the center point of the magneto-optical disk and performs recording or erasing on the magneto-optical disk. An external magnetic field generator for generating a magnetic field for an optical head includes a magnet for generating a magnetic field in the thickness direction of the magneto-optical disk, a reversing drive means for reversing the polarity of the magnet, and a reversing drive means for reversing the polarity of the magnet. An external magnetic field generating device comprising: a rotation drive means for rotating in the circumferential direction of the external magnetic field generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14940187U JPS6456002U (en) | 1987-09-29 | 1987-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14940187U JPS6456002U (en) | 1987-09-29 | 1987-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6456002U true JPS6456002U (en) | 1989-04-06 |
Family
ID=31421597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14940187U Pending JPS6456002U (en) | 1987-09-29 | 1987-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6456002U (en) |
-
1987
- 1987-09-29 JP JP14940187U patent/JPS6456002U/ja active Pending