JPH0323802U - - Google Patents
Info
- Publication number
- JPH0323802U JPH0323802U JP8272789U JP8272789U JPH0323802U JP H0323802 U JPH0323802 U JP H0323802U JP 8272789 U JP8272789 U JP 8272789U JP 8272789 U JP8272789 U JP 8272789U JP H0323802 U JPH0323802 U JP H0323802U
- Authority
- JP
- Japan
- Prior art keywords
- recording
- magnetic field
- optical disk
- auxiliary
- layer
- 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図ないし第１０図は本考案の実施例を説明
した図、第１１図は従来技術の説明図である。
１…光デイスク、１０…初期補助磁界印加装置
、Ｙ…ヨーク、ＭＧ１，ＭＧ２…永久磁石、ＣＲ
…デイスクカートリツジ。
1 to 10 are diagrams illustrating an embodiment of the present invention, and FIG. 11 is a diagram illustrating a prior art. 1... Optical disk, 10... Initial auxiliary magnetic field application device, Y... Yoke, MG1, MG2... Permanent magnet, CR
...disk cartridge.
Claims (1)
を用い、記録に際して先ず初期補助磁界印加装置
にて記録補助層を初期補助磁界の方向に磁化させ
、次いで記録情報に従うレーザーパワーの強弱に
より補助記録層の磁化方向または記録磁界による
磁化方向の何れかに選択した方向の磁化状態を記
録再生層に得て、結果的に、消去・記録を同時に
行なう光デイスク装置において、 初期補助磁界印加装置を、光デイスクを間にし
て対向するコの字型のヨークと、このヨークに設
けられた永久磁石を以つて構成したうえ、光デイ
スク装置本体側に設けたことを特徴とする光デイ
スク装置。 ２ 記録補助層と記録再生層を有する光デイスク
を用い、記録に際して先ず初期補助磁界印加装置
にて記録補助層を初期補助磁界の方向に磁化させ
、次いで記録情報に従うレーザーパワーの強弱に
より補助記録層の磁化方向または記録磁界による
磁化方向の何れかに選択した方向の磁化状態を記
録再生層に得て、結果的に、消去・記録を同時に
行なう光デイスク装置において、 初期補助磁界印加装置を、光デイスクを間にし
て対向するコの字型のヨークと、このヨークに設
けられた永久磁石を以つて構成したうえ、光デイ
スクを収容しているデイスクカートリツジ側に設
けたことを特徴とするデイスクカートリツジ。[Claims for Utility Model Registration] 1. Using an optical disk having an auxiliary recording layer and a recording/reproducing layer, during recording, the auxiliary recording layer is first magnetized in the direction of the initial auxiliary magnetic field by an initial auxiliary magnetic field applying device, and then the auxiliary recording layer is magnetized in the direction of the initial auxiliary magnetic field, and then the recording information is In an optical disk device that obtains a magnetization state in the recording/reproducing layer in a direction selected from either the magnetization direction of the auxiliary recording layer or the magnetization direction due to the recording magnetic field by the strength of the laser power, and as a result, performs erasing and recording at the same time. The initial auxiliary magnetic field applying device is composed of a U-shaped yoke facing each other with an optical disk in between, and a permanent magnet provided on this yoke, and is also provided on the optical disk device main body side. optical disk device. 2. Using an optical disk having an auxiliary recording layer and a recording/reproducing layer, during recording, the auxiliary recording layer is first magnetized in the direction of the initial auxiliary magnetic field using an initial auxiliary magnetic field applying device, and then the auxiliary recording layer is magnetized by the intensity of laser power according to the recorded information. In an optical disk device that obtains a magnetization state in a direction selected from either the magnetization direction of the magnetization direction or the magnetization direction of the recording magnetic field in the recording/reproducing layer, and as a result performs erasing and recording simultaneously, the initial auxiliary magnetic field applying device is A disk comprising a U-shaped yoke facing each other with a disk in between, a permanent magnet provided on the yoke, and further provided on the side of a disk cartridge housing an optical disk. Cartridge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8272789U JPH0323802U (en) | 1989-07-14 | 1989-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8272789U JPH0323802U (en) | 1989-07-14 | 1989-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0323802U true JPH0323802U (en) | 1991-03-12 |
Family
ID=31629793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8272789U Pending JPH0323802U (en) | 1989-07-14 | 1989-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323802U (en) |
-
1989
- 1989-07-14 JP JP8272789U patent/JPH0323802U/ja active Pending
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