JPS59148164A - magnetic recording and reproducing device - Google Patents
magnetic recording and reproducing deviceInfo
- Publication number
- JPS59148164A JPS59148164A JP2305583A JP2305583A JPS59148164A JP S59148164 A JPS59148164 A JP S59148164A JP 2305583 A JP2305583 A JP 2305583A JP 2305583 A JP2305583 A JP 2305583A JP S59148164 A JPS59148164 A JP S59148164A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- magnetic
- magnetic recording
- recording medium
- 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
- 239000000758 substrate Substances 0.000 claims description 9
- 230000005415 magnetization Effects 0.000 description 16
- 230000003287 optical effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910020706 Co—Re Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000005374 Kerr effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000010436 fluorite Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- AJCDFVKYMIUXCR-UHFFFAOYSA-N oxobarium;oxo(oxoferriooxy)iron Chemical compound [Ba]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O.O=[Fe]O[Fe]=O AJCDFVKYMIUXCR-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10502—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing characterised by the transducing operation to be executed
- G11B11/10515—Reproducing
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は光透過基板上に光熱磁気配録層と垂直磁化記録
層を構成した記録媒体に対し垂直磁気ヘッドにより配録
を行ない、レーザー光の反射を検出することにより再生
を行なう、書き替え可能で高密度の磁気記録再生装置に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention uses a perpendicular magnetic head to perform recording on a recording medium comprising a photothermal magnetic recording layer and a perpendicular magnetization recording layer on a light-transmitting substrate, and detect the reflection of laser light. The present invention relates to a rewritable, high-density magnetic recording and reproducing device that performs reproduction.
情報処理機器の進展はめざましく、なかでも記憶装置は
容量の大幅人拡大が要求されている。光磁気メモリーは
光を用いて配録再生する方式と］７て、、その記録密闇
は１０８ビ・ソトβとされ、３０ｃＩＩＬ径のディスク
で１時間の画像配録及び再生更に書き替えが可能とされ
ている。その基本原理を第１図ｆ：Ｌ）Ｋ示す。基板１
の表面にＭｎ −Ｂｉ ４） Ｍｎ −Ｏｕ−Ｂｉ 、
Ｍ？ｌｌｌ −Ｎｚ、 −Ｂｉ非晶質希土類−遷移金
属合金膜などの光熱磁気配録層２が設けられている。Advances in information processing equipment are remarkable, and storage devices in particular are required to significantly increase their capacity. Magneto-optical memory is a method of recording and reproducing data using light]7, and its recording density is 108 BiSotoβ, and a 30c IIL diameter disk can store and reproduce images for one hour, and can also be rewritten. It is said that The basic principle is shown in Figure 1f:L)K. Board 1
on the surface of Mn-Bi4) Mn-Ou-Bi,
M? A photothermal magnetic recording layer 2 such as -Nz, -Bi amorphous rare earth-transition metal alloy film is provided.
その表面にレーザー１１からの光ビームがコリメーター
レンズ９、プリズム６、ハーフミラ−５、対物レンズ３
等を通過して照射される。この時コイル４により外部磁
界が印加されており、集光されたレーザービームで媒体
層２の表面が部分的にキュリー温廖もしくけ補償ｉｔよ
り高くなり、その時に外部磁界が印加されているために
その微小部分だけが磁化が反転し、磁気配録が々される
。The light beam from the laser 11 is applied to the surface of the collimator lens 9, the prism 6, the half mirror 5, and the objective lens 3.
etc., and is irradiated. At this time, an external magnetic field is applied by the coil 4, and the surface of the medium layer 2 becomes partially higher than the Curie temperature compensation it due to the focused laser beam, and the external magnetic field is applied at that time. The magnetization of only that tiny portion is reversed, and magnetic recording occurs.
次にその記録信号を読み出す場合には光と磁気の相互作
用であるカー効果を用いる。即ちパワーを半分穆ニ減少
させてレーザー１１より照射された光ビームは媒体層か
ら反射し、ハーフミラ−５によねスポットレンズ７、ア
ナライザー８を通過しディテクター１０で検出される。Next, when reading the recorded signal, the Kerr effect, which is an interaction between light and magnetism, is used. That is, the light beam irradiated by the laser 11 with its power reduced by half is reflected from the medium layer, passes through the half mirror 5, the spot lens 7, and the analyzer 8, and is detected by the detector 10.
図において一部偏光器が省略されているが光磁気記録の
基本原理は第１図（ａ） Ｖｃ示す通りである。この場
合光エネルギーで書き込み、更に光で信号を検出するた
めに％に書六込入時に光エネルギーを集中させる必要が
あり、光磁気記録媒体２１ｄキユリー湛［電もしくけ補
償温間が近い組成即ち安定性の近い材料が要求され、［
２かも外部環境にさらされるという欠点を有している。Although some polarizers are omitted in the figure, the basic principle of magneto-optical recording is as shown in FIG. 1(a) Vc. In this case, it is necessary to write with optical energy and furthermore, to detect the signal with light, it is necessary to concentrate the optical energy at the time of writing into %. Materials with similar stability are required, and [
2 also has the disadvantage of being exposed to the external environment.
一方Ｏｎ −０γ薄嘆やＢａミツエライト模膜用いた垂
直磁化記録は非常に安定なＨｅ録媒体を用い、しかも光
記録と同程度の記録密度特性を持つ高密度記録方式とし
て注目されている。その原理の概要を第１図（ｂｌに示
す。フェライト棒１５に巻いたコイル１６で構成される
補助磁極から発生１．た磁界を主磁極１４で吸い込みｃ
ｏ −ａｒ、 ｃｏ −ｖ、 ｃ。On the other hand, perpendicular magnetization recording using On-0γ dilution or Ba mitzerite film uses a very stable He recording medium, and is attracting attention as a high-density recording system that has recording density characteristics comparable to optical recording. The outline of the principle is shown in Figure 1 (bl).The magnetic field generated from the auxiliary magnetic pole consisting of the coil 16 wound around the ferrite rod 15 is absorbed by the main magnetic pole 14.
o-ar, co-v, c.
−Ｒｈ 、 ｏｏ −Ｒ’ｕ 、 Ｃｏ −Ｏｓ
、 Ｃｏ −Ｒｅ などの二成分のコバルト合金あ
るいｎ ｃｏ −ａｒ−Ｔｉ 、 ｃ。-Rh, oo -R'u, Co -Os
, Co-Re or n co -ar-Ti, c.
−Ｏｒ −Ｔａ 、 Ｃｏ −Ｏｒ −Ｗ 、 Ｃ
ｏ −Ｏｒ −Ｍｏ 、 Ｃ。-Or -Ta, Co -Or -W, C
o -Or -Mo, C.
−ｃｒ −Ｎｂなどの三成分のコバルト合金、あるいは
バリウムフェライト等のフェライト薄膜で構成さ・れる
垂直磁化膜１３ Ｋ配録される。再生は配録層１６の磁
化が主磁極１４を磁化し、それによって発生した磁界を
補助磁瘉のコイル１６で検出する。A perpendicular magnetization film 13K is arranged, which is composed of a three-component cobalt alloy such as -cr-Nb or a ferrite thin film such as barium ferrite. During reproduction, the magnetization of the recording layer 16 magnetizes the main pole 14, and the magnetic field generated thereby is detected by the coil 16 of the auxiliary magnet.
この方式は記録媒体の材質が非常に安定であり、高密度
記録も行なわれるが、再生時に、特に高密度記録の場合
外部洩えい磁界が小さい為に再生信号が非常に弱くなる
ことが欠点とされる。In this method, the material of the recording medium is very stable and high-density recording is possible, but the disadvantage is that during reproduction, especially in high-density recording, the reproduced signal becomes very weak because the external leakage magnetic field is small. be done.
本発明けこれら三方式の欠点を改良し、Ｆ録及び再生が
簡便でしかも高密度記録が可能な磁気記録方式を完成し
たものである。The present invention has improved the shortcomings of these three systems, and has completed a magnetic recording system that is easy to perform F recording and playback and is capable of high-density recording.
本発明の目的は信頼性の高い磁気記録装置を提供するこ
とにある。An object of the present invention is to provide a highly reliable magnetic recording device.
本発明の他の目的は簡便に配録もしくは書き磁気が行な
われ、かつ再生信号が強力でしかも安定している磁気記
録装置を提供することにある。Another object of the present invention is to provide a magnetic recording device in which magnetic recording or writing can be easily performed and the reproduced signal is strong and stable.
第２図により本発明に用いられる記録媒体を説明する。The recording medium used in the present invention will be explained with reference to FIG.
アクリル、エポキシ、カーボネート、０Ｒ−３９等の透
明高分子成形物もしくはガラス等の透明基体１７上ｖｃ
Ｍｎ −Ｂｉ 、 Ｍ２Ｒ−ａｌＬ−Ｂ？： 、
Ｍ％−Ｎｉ２−ＢＭ、 Ｍｎ −Ａｔ−Ｇｅ、 ０ｄ−
Ｃｏ、 Ｇｄ−Ｔｂ−Ｆｅなどの光熱磁気配録媒体層１
９が形成され、更にその上部にＣｏ −ａｒ、 ａｏ
−ｖ、ｃｏ −Ｒｈ、ｃ。VC on a transparent substrate 17 such as a transparent polymer molded product such as acrylic, epoxy, carbonate, 0R-39, or glass
Mn-Bi, M2R-alL-B? : ,
M%-Ni2-BM, Mn-At-Ge, 0d-
Photothermal magnetic recording medium layer 1 made of Co, Gd-Tb-Fe, etc.
9 is formed, and Co-ar, ao
-v,co -Rh,c.
−Ｒｕ 、 ａｏ −ａｓ 、 ｃｏ −Ｒｇ 、
ｃｏ −Ｏｒ −Ｔｉ 、 ａｎ−ａｒ −Ｔ（Ｚ
、 Ｃｎ −ａｒ −ｗ 、 ｃｏ −ａｒ−Ｍ
（１、Ｃ０−〇τ−ｙｂなとのコバルト合金垂直磁化膜
もしくけバリウムフヱライト垂直磁化膜などの垂直磁化
記録層１９が構成されている。この磁気記録媒体を用い
た本発明の例を第３図に示す。透明基板２０上に光熱磁
気記録媒体層２１、垂直磁化記録媒体層２２が構成され
たディスクの上部に主磁極薄膜２３Ｖｃ巻いたコイルＶ
Ｃ電流を流して発生した磁界が垂直磁化記録媒体層２２
ＩＣ磁化を残し、その残留磁化が光熱磁気記録媒体層２
１に転写記録される。再生時には透明基板２０側にレー
ザー光を照射しカー回転による反射光の強弱により信号
を読入出す。-Ru, ao-as, co-Rg,
co -Or -Ti, an-ar -T(Z
, Cn-ar-w, co-ar-M
(1. The perpendicular magnetization recording layer 19 is composed of a cobalt alloy perpendicular magnetization film such as C0-〇τ-yb or a barium fluorite perpendicular magnetization film. An example of the present invention using this magnetic recording medium is shown in Fig. 3.A coil V with a main pole thin film 23Vc wound on top of a disk in which a photothermal magnetic recording medium layer 21 and a perpendicular magnetization recording medium layer 22 are formed on a transparent substrate 20.
The magnetic field generated by passing the C current is applied to the perpendicular magnetization recording medium layer 22.
The IC magnetization remains, and the residual magnetization forms the photothermal magnetic recording medium layer 2.
1 is transcribed and recorded. During reproduction, a laser beam is irradiated onto the transparent substrate 20 side, and signals are read out depending on the intensity of the reflected light due to Kerr rotation.
読み出し機構は第１図（ａ）で示した再生機構が基本的
に適用される。即ち第３図でＷで示した部分が書き込入
部でＲで示した部分が読み出し部となる。Ｗ部とＲ部は
同一装置内に偏見るのが基本で ５−
あるがＷ部とＲ部をそれぞれ独立させてＷ専用機構とＲ
専用機構に分離させてもよい。即ちＷ専用機構部を携帯
タイプとＬ Ｒ専用機構を据え置き型とすることも可能
である。この場合書き込み部に複雑な光学系が必要でな
く、主磁棲ニコイルを巻いた単純な磁気へラドだけでよ
いために携帯型に最適である。従って携帯ビデオシステ
ムとしてカメラと組み合わせると本発明の特徴は更に有
効となる。再生時は光学システムを完備させた据え置き
型で充分である。第４図に記録部とカメラと組み合わせ
た構成の例を示す。カメラ２５からの信号をＡ−Ｄコン
バーター２６でデジタル信号としフレームメモリー２７
に一担記憶されたデータはコントローラー２８でクロッ
ク信号ヲＰＩＪｔｌし、モーター２９の回転をコントロ
ールすると共に変調器３０で変調されて磁気ヘッド３１
で磁界を発生し、第２図で示すディスク３２十Ｋ Ｆ録
される。As the reading mechanism, the reproduction mechanism shown in FIG. 1(a) is basically applied. That is, the part indicated by W in FIG. 3 is a write input part, and the part indicated by R is a read part. Basically, the W part and the R part are placed in the same device.
It may be separated into a dedicated mechanism. That is, it is also possible to make the W-dedicated mechanism part a portable type and the L/R-dedicated mechanism part a stationary type. In this case, the writing section does not require a complicated optical system, and only requires a simple magnetic heald winding the main magnetic coil, making it ideal for portable use. Therefore, the features of the present invention become even more effective when combined with a camera as a portable video system. During playback, a stationary type equipped with an optical system is sufficient. FIG. 4 shows an example of a configuration in which a recording section and a camera are combined. The signal from the camera 25 is converted into a digital signal by the A-D converter 26 and the frame memory 27
The data stored in the controller 28 outputs a clock signal to control the rotation of the motor 29 and is modulated by the modulator 30 to the magnetic head 31.
A magnetic field is generated at the 320 KF disk shown in FIG.
このディスク３２は散りはずすことができる。このディ
スク６２だけで通常の光ディスクと同様に信号の請み出
しが行なわれＯＲＴ上に画像の再生 ６−
や、プリンターを通して印刷される。This disk 32 can be removed. Just with this disk 62, signals are sent out in the same way as with a normal optical disk, and images are reproduced on the ORT or printed through a printer.
以上説明した如く本発明により簡便で高密塵な記録ので
きる磁気記録再生装置が完成］また。As explained above, according to the present invention, a magnetic recording/reproducing device capable of simple and highly dense recording has been completed.
ｆ４１図硫１は光熱磁気記録の基本構成を示す図で第１
図（ｂ＋ １−を垂直磁化記録の基本構成を示す図であ
る。
第２図は本発明に用いられる磁気記録媒体の構成図であ
る。
第３図は本発明の一例を示す図である。
第４図は本発明を応用した例を説明する図である。
１０．透明基板 ２・・光熱磁気配録層６０．
対物レアズ ４・・外部磁界コイル５・・・・−
フミラー ６°°プリズム７・・スポットレンズ
８゛°アナライザー９−ｍ１リメーター １０・
・ディテクター１１・・レーザー源 １２゛°基板
１３・・垂直磁化記録層 １４゛°主磁極１５・・補助
磁極 １６・・コイル１７・・透明基板 １８
・・光熱磁気配録層１９・・垂直磁化配録層２０・・透
明基板２１・・光熱磁気配録層２２・・垂直磁化記録層
２３・・主磁榛 ２４・・コイル２５・・カメラ
２６・・ＡＤコンバーター２７・・フレーム
メモリ ２８・・コントローラー２９・・モーター
６０・・変調器３１・・磁気ヘッド ３２・・ディ
スク以 上
出願人 株式会社 諏訪精工舎
ｃｏ−＞ ｒｂ＞第１区
第２０
第４図Figure f41 Figure 1 is the first diagram showing the basic configuration of photothermal magnetic recording.
Figure (b+1-) is a diagram showing the basic configuration of perpendicular magnetization recording. Figure 2 is a diagram showing the configuration of a magnetic recording medium used in the present invention. Figure 3 is a diagram showing an example of the present invention. Fig. 4 is a diagram illustrating an example in which the present invention is applied.10.Transparent substrate 2...Photothermal magnetic recording layer 60.
Objective rarez 4...External magnetic field coil 5...-
Humirar 6°° prism 7... spot lens
8゛° analyzer 9-m1 remeter 10・
・Detector 11... Laser source 12° Substrate 13... Perpendicular magnetization recording layer 14° Main magnetic pole 15... Auxiliary magnetic pole 16... Coil 17... Transparent substrate 18
--Photothermal magnetic recording layer 19 --Perpendicular magnetization recording layer 20 --Transparent substrate 21 --Photothermal magnetic recording layer 22 --Perpendicular magnetization recording layer 23 --Main magnetic pole 24 --Coil 25 --Camera 26・・AD converter 27・・Frame memory 28・・Controller 29・・Motor
60...Modulator 31...Magnetic head 32...Disk and above Applicant Suwa Seikosha Co., Ltd. co->rb> Ward 1 No. 20 Figure 4
Claims (1)
層１．た構造の記録媒体に記録磁界を発生させる手段と
該記録媒体からの反射光を検出する手段を備えたことを
特徴とする磁気Ｈｒｌ録再主再生装Layering a photothermal magnetic recording layer and a perpendicular magnetic recording layer on a light-transmitting substrate 1. A magnetic Hrl recording/reproducing main playback device characterized by comprising means for generating a recording magnetic field in a recording medium having a structure and means for detecting reflected light from the recording medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2305583A JPS59148164A (en) | 1983-02-15 | 1983-02-15 | magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2305583A JPS59148164A (en) | 1983-02-15 | 1983-02-15 | magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59148164A true JPS59148164A (en) | 1984-08-24 |
Family
ID=12099753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2305583A Pending JPS59148164A (en) | 1983-02-15 | 1983-02-15 | magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59148164A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0230325A2 (en) * | 1986-01-23 | 1987-07-29 | Sony Corporation | Device for producing a high frequency modulation magnetic field used in magneto-optical recording |
-
1983
- 1983-02-15 JP JP2305583A patent/JPS59148164A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0230325A2 (en) * | 1986-01-23 | 1987-07-29 | Sony Corporation | Device for producing a high frequency modulation magnetic field used in magneto-optical recording |
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