JP2001126326A5 - Magneto-optical disk and recording and / or playback device - Google Patents
Magneto-optical disk and recording and / or playback device Download PDFInfo
- Publication number
- JP2001126326A5 JP2001126326A5 JP1999303136A JP30313699A JP2001126326A5 JP 2001126326 A5 JP2001126326 A5 JP 2001126326A5 JP 1999303136 A JP1999303136 A JP 1999303136A JP 30313699 A JP30313699 A JP 30313699A JP 2001126326 A5 JP2001126326 A5 JP 2001126326A5
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- Prior art keywords
- magneto
- optical disk
- recording
- information recording
- area
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- 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.)
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- 230000002093 peripheral Effects 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000003287 optical Effects 0.000 description 1
Description
【特許請求の範囲】
【請求項１】
環状の情報記録領域と、上記情報記録領域の内周側に設けられ記録及び／又は再生装置側の保持手段により保持されるための保持用領域とを有する光磁気ディスクにおいて、
記録及び／又は再生装置側の磁気ヘッドを上記光磁気ディスクの上記情報記録領域に対して押圧する押圧力が０．５±０．１（ｇｆ）以上とされた際に、上記磁気ヘッドの押圧力によって生じる撓みによる傾きが１（ｍｒａｄ）以下とされ、
外径をｄ１（ｍｍ）、上記保持用領域の外径をｄ２（ｍｍ）、ディスク基板の厚さをｔ（ｍｍ）とし、
ｔ≧３√｛（ｄ１ −ｄ２ ）２ ／１６２３４｝
が成立するように形成されたことを特徴とする光磁気ディスク。
【請求項２】
環状の情報記録領域と、上記情報記録領域の内周側に設けられ記録及び／又は再生装置側の保持手段により保持されるための保持用領域とを有する光磁気ディスクに対して情報を記録及び／又は再生する記録及び／又は再生装置において、
上記光磁気ディスクの上記情報記録領域に対して押圧される押圧力が０．５±０．１（ｇｆ）以上とされた磁気ヘッドを備え、
上記磁気ヘッドの押圧力によって上記光磁気ディスクに生じる撓みによる傾きが１（ｍｒａｄ）以下とされ、
外径をｄ１（ｍｍ）、上記保持用領域の外径をｄ２（ｍｍ）、ディスク基板の厚さをｔ（ｍｍ）とし、
ｔ≧３√｛（ｄ１ −ｄ２ ）２ ／１６２３４｝
が成立するように形成された上記光磁気ディスクを情報記録媒体として用いることを特徴とする記録及び／又は再生装置。
[Claims]
[Claim 1]
In a magneto-optical disk having an annular information recording area and a holding area provided on the inner peripheral side of the information recording area and held by a holding means on the recording and / or reproducing device side.
When the pressing force for pressing the magnetic head on the recording and / or reproducing device side against the information recording area of the magneto-optical disk is 0.5 ± 0.1 (gf) or more, the pressing of the magnetic head is performed. The inclination due to bending caused by pressure is set to 1 (mrad) or less.
The outer diameter is d 1 (mm), the outer diameter of the holding area is d 2 (mm), and the thickness of the disk substrate is t (mm).
t ≧ 3 √ {(d 1 -d 2) 2/16234}
A magneto-optical disk characterized in that it is formed so as to hold.
2.
Information is recorded and recorded on a magneto-optical disk having an annular information recording area and a holding area provided on the inner peripheral side of the information recording area and held by a holding means on the recording and / or reproducing device side. / Or in the recording and / or playback device to be played back
A magnetic head having a pressing force of 0.5 ± 0.1 (gf) or more pressed against the information recording area of the magneto-optical disk is provided.
The inclination due to the deflection caused by the pressing force of the magnetic head on the magneto-optical disk is set to 1 (mrad) or less.
The outer diameter is d 1 (mm), the outer diameter of the holding area is d 2 (mm), and the thickness of the disk substrate is t (mm).
t ≧ 3 √ {(d 1 -d 2) 2/16234}
A recording and / or reproducing device, characterized in that the magneto-optical disk formed so as to hold the above is used as an information recording medium.
【０００１】
【発明の属する技術分野】
本発明は、情報が記録再生される光磁気ディスク及びこの光磁気ディスクに対して情報の記録及び／又は再生を行う記録及び／又は再生装置に関する。
[0001]
[Technical field to which the invention belongs]
The present invention relates to a magneto-optical disk on which information is recorded and reproduced, and a recording and / or reproduction device for recording and / or reproducing information on the magneto-optical disk.
そこで、本発明は、外径の小径化及び薄型化を図り、記録再生時に情報記録領域に生じる傾きを許容量以下に抑制することを可能とする光磁気ディスク及び光磁気ディスクに対する情報の記録再生動作の信頼性を向上することができる記録及び／又は再生装置を提供することを目的とする。 Therefore, the present invention aims to reduce the outer diameter and thickness of the outer diameter, and to record and reproduce information on a magneto-optical disk and a magneto-optical disk, which makes it possible to suppress the inclination generated in the information recording area during recording / reproduction to an allowable amount or less. It is an object of the present invention to provide a recording and / or playback device capable of improving the reliability of operation.
【００１５】
【課題を解決するための手段】
上述した目的を達成するため、本発明に係る光磁気ディスクは、環状の情報記録領域と、上記情報記録領域の内周側に設けられ記録及び／又は再生装置側の保持手段により保持されるための保持用領域とを有する。また、この光磁気ディスクは、記録及び／又は再生装置側の磁気ヘッドを光磁気ディスクの上記情報記録領域に対して押圧する押圧力が０．５±０．１（ｇｆ）以上とされた際に、磁気ヘッドの押圧力によって生じる撓みによる傾きが１（ｍｒａｄ）以下とされ、外径をｄ１（ｍｍ）、上記保持用領域の外径をｄ２（ｍｍ）、ディスク基板の厚さをｔ（ｍｍ）とし、
ｔ≧３√｛（ｄ１ −ｄ２ ）２ ／１６２３４｝
が成立するように形成される。
0015.
[Means for solving problems]
In order to achieve the above-mentioned object, the magneto-optical disk according to the present invention is held by an annular information recording area and a holding means provided on the inner peripheral side of the information recording area and on the recording and / or reproducing device side. Has a holding area and. Further, in this magneto- optical disk, when the pressing force for pressing the magnetic head on the recording / / or reproducing device side against the information recording area of the magneto-optical disk is 0.5 ± 0.1 (gf) or more. In addition, the inclination due to bending caused by the pressing force of the magnetic head is set to 1 (mrad) or less, the outer diameter is d 1 (mm), the outer diameter of the holding area is d 2 (mm), and the thickness of the disk substrate is set. Let it be t (mm)
t ≧ 3 √ {(d 1 -d 2) 2/16234}
Is formed so as to hold.
また、本発明に係る記録及び／又は再生装置は、環状の情報記録領域と、この情報記録領域の内周側に設けられ記録及び／又は再生装置側の保持手段により保持されるための保持用領域とを有する光磁気ディスクに対して情報を記録及び／又は再生するように構成される。この記録及び／又は再生装置は、光磁気ディスクの上記情報記録領域に対して押圧される押圧力が０．５±０．１（ｇｆ）以上とされた磁気ヘッドを備える。そして、記録及び／又は再生装置は、磁気ヘッドの押圧力によって光磁気ディスクに生じる撓みによる傾きが１（ｍｒａｄ）以下とされ、外径をｄ１（ｍｍ）、保持用領域の外径をｄ２（ｍｍ）、ディスク基板の厚さをｔ（ｍｍ）とし、
ｔ≧３√｛（ｄ１ −ｄ２ ）２ ／１６２３４｝
が成立するように形成された光磁気ディスクを情報記録媒体として用いるように構成される。
Further, the recording and / or reproducing device according to the present invention is for holding by an annular information recording area and a holding means provided on the inner peripheral side of the information recording area and on the recording and / or reproducing device side. It is configured to record and / or reproduce information on a magneto-optical disk having an area. The recording and / or reproducing device includes a magnetic head having a pressing force of 0.5 ± 0.1 (gf) or more pressed against the information recording area of the magneto-optical disk. The recording and / or playback device has an inclination of 1 (mrad) or less due to bending caused by the pressing force of the magnetic head, the outer diameter is d 1 (mm), and the outer diameter of the holding region is d. 2 (mm), the thickness of the disk substrate is t (mm),
t ≧ 3 √ {(d 1 -d 2) 2/16234}
Is configured to use a magneto-optical disk formed so as to hold the above as an information recording medium.
また、本発明に係る記録及び／又は再生装置によれば、光磁気ディスクの記録又は再生時に、光磁気ディスクの情報記録領域に押圧される磁気ヘッドにより、光磁気ディスクに発生する傾きを許容量以下に抑制することが可能とされ、光磁気ディスクに対する情報の記録再生動作の信頼性を向上することができる。 Further, according to the recording and / or reproduction apparatus according to the present invention, the allowable amount of tilt generated in the magneto-optical disk by the magnetic head pressed against the information recording area of the magneto-optical disk during recording or reproduction of the magneto-optical disk. It is possible to suppress the following, and it is possible to improve the reliability of the information recording / playback operation on the magneto-optical disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30313699A JP2001126326A (en) | 1999-10-25 | 1999-10-25 | Magneto-optical disk and recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30313699A JP2001126326A (en) | 1999-10-25 | 1999-10-25 | Magneto-optical disk and recording and reproducing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001126326A JP2001126326A (en) | 2001-05-11 |
| JP2001126326A5 true JP2001126326A5 (en) | 2006-05-11 |
Family
ID=17917323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30313699A Pending JP2001126326A (en) | 1999-10-25 | 1999-10-25 | Magneto-optical disk and recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001126326A (en) |
-
1999
- 1999-10-25 JP JP30313699A patent/JP2001126326A/en active Pending
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