JPS6396704A - Perpendicular magnetic recording and reproducing device - Google Patents
Perpendicular magnetic recording and reproducing deviceInfo
- Publication number
- JPS6396704A JPS6396704A JP24150486A JP24150486A JPS6396704A JP S6396704 A JPS6396704 A JP S6396704A JP 24150486 A JP24150486 A JP 24150486A JP 24150486 A JP24150486 A JP 24150486A JP S6396704 A JPS6396704 A JP S6396704A
- Authority
- JP
- Japan
- Prior art keywords
- head
- magnetic
- pole head
- magnetic pole
- main
- 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
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 235000013290 Sagittaria latifolia Nutrition 0.000 abstract 1
- 235000015246 common arrowhead Nutrition 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/32—Maintaining desired spacing between record carrier and head, e.g. by fluid-dynamic spacing
-
- 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
- G11B5/127—Structure or manufacture of heads, e.g. inductive
- G11B5/1278—Structure or manufacture of heads, e.g. inductive specially adapted for magnetisations perpendicular to the surface of the record carrier
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Magnetic Heads (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は垂直磁気記録再生装置に関し、良好なヘッドタ
ッチが得られるよう企図したものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a perpendicular magnetic recording/reproducing device, and is intended to provide a good head touch.
〈従来の技術〉
近年、記録密度が極めて高く、且つデータ誤り （ドロ
ップアウト等）の少ない磁気記録方式として垂直磁気記
録が開発された。この垂直磁気記録とは、面に垂直な磁
化容易軸をもつ記録媒体を垂直成分磁界で記録する方法
であり、この方法によれば減磁界の影響を小さくでき高
密度記録が可能となる。<Prior Art> In recent years, perpendicular magnetic recording has been developed as a magnetic recording method with extremely high recording density and fewer data errors (dropouts, etc.). This perpendicular magnetic recording is a method of recording on a recording medium having an axis of easy magnetization perpendicular to the surface using a perpendicular component magnetic field, and this method makes it possible to reduce the influence of a demagnetizing field and enable high-density recording.
そして、垂直磁気記録を実現する垂直型ヘッドの一つに
対向型ヘッドがある。対向型ヘッドには、第３図に示す
ように、磁気媒体１を間に挾んで主磁極ヘッド２と補助
磁極ヘッド３とを対向配置して構成されろ。場合によっ
ては、磁気シート等の磁気媒体１の逃げを妨げろ部材４
，５を配置することもある。主磁極ヘッド２は軟磁性体
の薄膜で形成されており、幅は数十μｍ程度、厚さは１
μｍ弱と極めて薄い。これに対し補助磁極ヘッド３の厚
さは０．５鴫程度である。そして補助磁極ヘッド３に巻
回したコイル３ａに（ｉｔ号電流を流すと補助磁極ヘッ
ド３から磁力線が出て、磁力線は主磁極ヘッド２の先端
に集中し、この先端付近では強い垂直磁界が発生し垂直
磁気記録が行なわれる。One type of perpendicular head that realizes perpendicular magnetic recording is a facing type head. As shown in FIG. 3, the opposing type head is constructed by arranging a main magnetic pole head 2 and an auxiliary magnetic pole head 3 facing each other with a magnetic medium 1 in between. In some cases, a filter member 4 may be used to prevent the magnetic medium 1 such as a magnetic sheet from escaping.
, 5 may also be placed. The main magnetic pole head 2 is made of a thin film of soft magnetic material, and has a width of approximately several tens of μm and a thickness of 1 μm.
Extremely thin, just under μm. On the other hand, the thickness of the auxiliary magnetic pole head 3 is about 0.5 mm. When a current (item) is applied to the coil 3a wound around the auxiliary magnetic pole head 3, lines of magnetic force come out from the auxiliary magnetic pole head 3, and the lines of magnetic force are concentrated at the tip of the main magnetic pole head 2, and a strong perpendicular magnetic field is generated near this tip. Then, perpendicular magnetic recording is performed.
〈発明が解決しようとする問題点〉
この種の装置では、記録及び再生を信頼性の高いものと
するためには、主磁極ヘッドに磁気媒体を安定して摺接
させることが重要である。そして、特に磁気媒体として
可撓性を有している磁気シートを使用する場合は、単に
主磁極ヘッドに磁気シートを摺接させるだけでは良好な
ヘッドタッチが得られない問題点があったー。この問題
の解決のために、磁気シート逃げ防止部材や、磁気シー
トの脱着にあたり、これら部材を動かす機構が必要であ
った。<Problems to be Solved by the Invention> In this type of device, in order to ensure reliable recording and reproduction, it is important to bring the magnetic medium into stable sliding contact with the main pole head. Particularly when a flexible magnetic sheet is used as the magnetic medium, there is a problem in that a good head touch cannot be obtained simply by sliding the magnetic sheet into contact with the main pole head. In order to solve this problem, a magnetic sheet escape prevention member and a mechanism for moving these members when attaching and detaching the magnetic sheet were required.
本発明は上記した問題点を解決する目的でなされ、良好
なヘッドタッチを簡便な機構で得ることのできる垂直磁
気記録再生装置を提供しようとするものである。The present invention was made in order to solve the above problems, and it is an object of the present invention to provide a perpendicular magnetic recording/reproducing device that can obtain good head touch with a simple mechanism.
く問題点を解決するための手段〉
前記問題点の解決にあたって本発明は、移動する磁気媒
体を間に挾んで垂直磁気記録再生用の主磁極ヘッドと補
助ｇ１極ヘッドとを対向配置した垂直磁気記録再生用Δ
において、前記磁気媒体の記録面に近接して対向し且つ
前記磁気媒体の移動方向に関して前記主磁極ヘッドの上
流側に配置され、前記磁気媒体と対向する面が上流側か
ら下流側に向うに従い前記磁気媒体から漸次遠ざかる第
１の傾斜面に形成され、しかも前記第１の傾斜面の下流
端が、前記主磁極ヘッドの先端部よりも前記磁気媒体か
ら離れた位置に占位する第１のヘッド摺接部材と、
前記磁気媒体の記録面に近接して対向し且つ１１Ｍ記主
磁極ヘッドの下流側に配置され、上流側から下流側に向
うに従い前記磁気媒体から漸次遠ざかる第２の傾斜面に
形成され、しかも前記第２の傾斜面の上流端が前記主磁
極ヘッドの先端部よりも前記磁気媒体から離れた位置に
占位する第２のヘッド摺接部材とを備丸ると共に、前記
補助磁極ヘッドの前記磁気媒体と対向する面が、下流側
から上流側に向うに従い前記磁気媒体から漸次遠ざかる
第３の傾斜面に形成されたことを特徴とする。Means for Solving the Problems> In order to solve the above problems, the present invention provides a perpendicular magnetic head in which a main pole head and an auxiliary G1 pole head for perpendicular magnetic recording and reproduction are arranged opposite to each other with a moving magnetic medium in between. Δ for recording and playback
, the main magnetic pole head is disposed close to and facing the recording surface of the magnetic medium and upstream of the main magnetic pole head with respect to the moving direction of the magnetic medium, and as the surface facing the magnetic medium goes from the upstream side to the downstream side. A first head formed on a first inclined surface that gradually moves away from the magnetic medium, and in which the downstream end of the first inclined surface is located at a position farther from the magnetic medium than the tip of the main pole head. a sliding contact member; and a second inclined surface that is disposed close to and opposed to the recording surface of the magnetic medium and downstream of the 11M main magnetic pole head, and that gradually moves away from the magnetic medium from the upstream side to the downstream side. a second head sliding contact member formed therein, in which the upstream end of the second inclined surface is located at a position farther from the magnetic medium than the tip of the main pole head; The magnetic pole head is characterized in that the surface facing the magnetic medium is formed as a third inclined surface that gradually moves away from the magnetic medium from the downstream side to the upstream side.
く作 用〉
磁気媒体が移動すると、第１，２のヘッド摺接部材の第
１，２の傾斜面で負圧による吸引力が生じ、更に補助磁
極ヘッドの第３の傾斜面で正圧による押圧力が生じる。When the magnetic medium moves, an attractive force is generated due to negative pressure on the first and second inclined surfaces of the first and second head sliding contact members, and furthermore, an attractive force is generated due to positive pressure on the third inclined surface of the auxiliary magnetic pole head. A pressing force is generated.
そして、この負圧による吸引力と正圧による押圧力によ
り、磁気媒体が主磁極ヘッドに対して良好に摺接される
。The magnetic medium is brought into good sliding contact with the main magnetic pole head due to the attraction force caused by the negative pressure and the pressing force caused by the positive pressure.
く実 施 例〉 以下、本発明を図示の一実施例により詳細に説明する。Example of implementation Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment.
第１図は本発明の一実施例に係る垂直記録再生装置の要
部を示す斜視図、第２図はその一部を拡大した説明図で
ある。これらの図に示すように、磁気媒体であるビデオ
フ四ツピー等の磁気シート１１は、磁気シートバック（
不図示）内に回動自在に収納されており、この磁気シー
ト１１を回転駆動用の駆動モータ１２の回転軸（不図示
）に装着する。そして、磁気シート１１の記録面（図１
では磁気シート１１の裏面）側には、垂直磁気記録再生
用の主磁極ヘッド１３が磁気シート１１の径方向に移動
可能に配置されている。また、磁気シート１１の回転方
向に関して主磁極ヘッド１３の上流側（図では主磁極ヘ
ッド１３の右側）には第１のヘッド摺接部材１４が、磁
気シート１１の記録面に近接してｍ気シート１１の径方
向に沿って対向配置されている。FIG. 1 is a perspective view showing the main parts of a perpendicular recording/reproducing apparatus according to an embodiment of the present invention, and FIG. 2 is an explanatory view in which a part thereof is enlarged. As shown in these figures, a magnetic sheet 11 such as a video recorder, which is a magnetic medium, is attached to a magnetic sheet back (
The magnetic sheet 11 is rotatably housed in a drive motor 12 (not shown) for rotational driving. Then, the recording surface of the magnetic sheet 11 (Fig.
A main pole head 13 for perpendicular magnetic recording and reproduction is arranged on the back side of the magnetic sheet 11 so as to be movable in the radial direction of the magnetic sheet 11. Further, on the upstream side of the main magnetic pole head 13 with respect to the rotational direction of the magnetic sheet 11 (on the right side of the main magnetic pole head 13 in the figure), a first head sliding contact member 14 is provided in close proximity to the recording surface of the magnetic sheet 11. They are arranged to face each other along the radial direction of the seat 11.
更に、主磁極ヘッド１３の下流側（図では１磁）エヘッ
ド１３の左側）には、第２のヘッド摺接部材１５が、磁
気シート１１の記録面に近接して磁気シート１１の径方
向に沿って対向配置されている。そして、第１のヘッド
摺接部材１４の磁気シート１１と対向する面に、主磁極
ヘッド１３と離れた側からこの主磁極ヘッド１３方向に
向うに従い磁気シート１１の記録面から漸次遠ざかる第
１の傾斜面１４ａが形成されている。更に、第２のヘッ
ド摺接部材１５の磁気シート１１と対向する面に、主磁
極ヘッド１３と離れた側に向うに従い磁気シート１１の
記録面から漸次遠ざかる第２の傾斜面１５ａが形成され
ている。この際、第１及び第２のヘッド摺接部材１４，
１５の間に位置する主磁極ヘッド１３は、その先端部が
第１及び第２の傾斜面１４ａ、１５ａの間から突出する
ように配置されている。尚、第１及び第２のヘッド摺接
部材１４，１５は当然のことながら非磁性体で形成され
ている。Furthermore, on the downstream side of the main pole head 13 (on the left side of the 1-magnetic head 13 in the figure), a second head sliding contact member 15 is provided in the vicinity of the recording surface of the magnetic sheet 11 in the radial direction of the magnetic sheet 11. They are placed opposite each other along the line. Then, on the surface of the first head sliding contact member 14 facing the magnetic sheet 11, a first insulating film is formed, which gradually moves away from the recording surface of the magnetic sheet 11 from the side away from the main magnetic pole head 13 toward the main magnetic pole head 13. An inclined surface 14a is formed. Furthermore, a second inclined surface 15a is formed on the surface of the second head sliding contact member 15 facing the magnetic sheet 11, which gradually moves away from the recording surface of the magnetic sheet 11 toward the side away from the main pole head 13. There is. At this time, the first and second head sliding contact members 14,
The main pole head 13 located between the first and second inclined surfaces 14a and 15a is arranged such that its tip protrudes from between the first and second inclined surfaces 14a and 15a. Note that the first and second head sliding contact members 14 and 15 are naturally made of a non-magnetic material.
また、垂直鬼気記録再生用の補助磁極ヘッド１６が磁気
シート１１を間に挾んで磁気シート１１に近接して、磁
気シート１１の径方向に沿い主磁極ヘッド１３の有効記
録再生範囲をカバーするようにして主ｍｉヘッド１３と
対向配置されている。そして、補助磁極ヘッド１６の磁
気シー１−１１と対向する面に、下流側から上流側に向
うに従い磁気シート１１から漸次遠ざかる第３の傾斜面
１６ａが形成されている。Further, the auxiliary magnetic pole head 16 for perpendicular magnetic recording and reproduction is placed close to the magnetic sheet 11 with the magnetic sheet 11 in between, so as to cover the effective recording and reproduction range of the main magnetic pole head 13 along the radial direction of the magnetic sheet 11. The main MI head 13 is arranged opposite to the main MI head 13. A third inclined surface 16a is formed on the surface of the auxiliary magnetic pole head 16 facing the magnetic sheet 1-11, which gradually moves away from the magnetic sheet 11 from the downstream side to the upstream side.
次に、本発明の詳細な説明する。駆動モータ１２により
磁気シート１１が高速で矢印方向に回転すると、磁気シ
ート１１の回転による空気流のため、第１，２のヘッド
摺接部材１４．１５の第１，２の傾斜面１４ａｐ １
５ａで負圧による吸引力が生じ、補助磁極ヘッド１６の
第３の傾斜面１６ａで、正圧による押圧力が生じる。よ
って、第２図に示すように、士気シート１１は点線で示
した停止状態から実線で示したように、主磁極ヘッド１
３に安定して摺接され、良好なヘッドタッチを得ること
ができろ。Next, the present invention will be explained in detail. When the magnetic sheet 11 is rotated at high speed in the direction of the arrow by the drive motor 12, the air flow caused by the rotation of the magnetic sheet 11 causes the first and second inclined surfaces 14ap 1 of the first and second head sliding contact members 14.15 to
An attractive force due to negative pressure is generated at 5a, and a pressing force due to positive pressure is generated at the third inclined surface 16a of the auxiliary magnetic pole head 16. Therefore, as shown in FIG. 2, the morale sheet 11 changes from the stopped state indicated by the dotted line to the main magnetic pole head 1 as indicated by the solid line.
You should be able to make stable sliding contact with 3 and get a good head touch.
また、前記実施例では、第１，２のヘッド摺接部材１４
，１５を磁気シート１１の径方向に沿って形成したが、
第１，２のヘッド摺接部材１４，１５を主磁極ヘッド１
３に対応した長さに形成し、ｗｔ気レシート１１径方向
Ｊに移動する主磁極ヘッド１３と共に移動させる構成
でも良い。Further, in the embodiment, the first and second head sliding members 14
, 15 were formed along the radial direction of the magnetic sheet 11, but
The first and second head sliding members 14 and 15 are connected to the main magnetic pole head 1.
3 and may be configured to be moved together with the main magnetic pole head 13 that moves in the radial direction J of the wt air receipt 11.
〈発明の効果〉
以上実施例とともに具体的に説明したように本発明によ
れば、第１，２のヘッド摺接部材に形成した第１，２の
傾斜面の作用により負正による吸引力が生じ、更に、補
助磁極ヘッドに形成した第３の傾斜面の作用により正圧
による押圧力が生じ、との負圧による吸引力及び正圧に
よる押圧力によって常に良好なヘッドタッチを得ること
ができ、レベル変動のない記録再生を行うことができろ
。<Effects of the Invention> As specifically explained above in conjunction with the embodiments, according to the present invention, negative and positive suction forces are generated by the action of the first and second inclined surfaces formed on the first and second head sliding members. Furthermore, a pressing force due to positive pressure is generated by the action of the third inclined surface formed on the auxiliary magnetic pole head, and a good head touch can always be obtained due to the suction force due to the negative pressure and the pressing force due to the positive pressure. , it should be possible to perform recording and playback without level fluctuations.
又、磁気シーｊ・が停止しているときには、どの部材に
も強く押しつけられることがないので、不必要な変形を
磁気シートに与えることがない。Further, when the magnetic sheet is at rest, it is not strongly pressed against any member, so that unnecessary deformation is not imparted to the magnetic sheet.
更に、補助磁極ヘッド側には、ヘッドタッチを得るため
のその他の部材がいっさい無い簡単な構造である。Furthermore, the auxiliary magnetic pole head side has a simple structure without any other members for obtaining head touch.
第１図は本発明の実施例に係る垂直磁気記録再生装置の
要部を示す斜視図、第２図はその一部を拡大した説明図
、第３図は従来の垂Ｗｅｌｔ気記録再生装置の要部を示
す説明図である。
図 面 中、
１１は磁気シート、
】３は主磁極ヘッド、
１４は第１のヘッド摺接部材、
１４ａは第１の傾斜面、
１５は第２のヘッド摺接部材、
１５ａは第２の傾斜面、
１６は補助ｍｔｉヘッド、
１、６ ａ第３の傾斜面である。FIG. 1 is a perspective view showing the main parts of a perpendicular magnetic recording and reproducing apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged explanatory view of a part thereof, and FIG. 3 is a perspective view of a conventional perpendicular welt recording and reproducing apparatus. FIG. 3 is an explanatory diagram showing main parts. In the drawing, 11 is a magnetic sheet, 3 is a main pole head, 14 is a first head sliding member, 14a is a first inclined surface, 15 is a second head sliding member, 15a is a second slope 16 is the auxiliary mti head, 1, 6a is the third inclined surface.
Claims (1)
磁極ヘッドと補助磁極ヘッドとを対向配置した垂直磁気
記録再生装置において、前記磁気媒体の記録面に近接し
て対向し且つ前記磁気媒体の移動方向に関して前記主磁
極ヘッドの上流側に配置され、前記磁気媒体と対向する
面が上流側から下流側に向うに従い前記磁気媒体から漸
次遠ざかる第１の傾斜面に形成され、しかも前記第１の
傾斜面の下流端が、前記主磁極ヘッドの先端部よりも前
記磁気媒体から離れた位置に占位する第１のヘッド摺接
部材と、前記磁気媒体の記録面に近接して対向し且つ前
記主磁極ヘッドの下流側に配置され、上流側から下流側
に向うに従い前記磁気媒体から漸次遠ざかる第２の傾斜
面に形成され、しかも前記第２の傾斜面の上流端が前記
主磁極ヘッドの先端部よりも、前記磁気媒体から離れた
位置に占位する第２のヘッド摺接部材とを備えると共に
、前記補助磁極ヘッドの前記磁気媒体と対向する面が、
下流側から上流側に向うに従い前記磁気媒体から漸次遠
ざかる第３の傾斜面に形成されたことを特徴とする垂直
磁気記録再生装置。In a perpendicular magnetic recording/reproducing device in which a main magnetic pole head and an auxiliary magnetic pole head for perpendicular magnetic recording/reproducing are disposed facing each other with a moving magnetic medium in between, the main magnetic pole head and the auxiliary magnetic pole head are disposed opposite to each other with a moving magnetic medium in between. is arranged on the upstream side of the main magnetic pole head with respect to the moving direction of the main pole head, and the surface facing the magnetic medium is formed as a first inclined surface that gradually moves away from the magnetic medium from the upstream side to the downstream side, and the first a first head sliding contact member located at a position farther from the magnetic medium than the tip of the main magnetic pole head, and a first head sliding contact member in which a downstream end of the inclined surface of the main magnetic pole head faces closely to the recording surface of the magnetic medium; A second inclined surface is disposed on the downstream side of the main magnetic pole head and gradually moves away from the magnetic medium from the upstream side to the downstream side, and the upstream end of the second inclined surface is located on the downstream side of the main magnetic pole head. a second head sliding contact member located at a position farther from the magnetic medium than the tip, and a surface of the auxiliary magnetic pole head facing the magnetic medium,
A perpendicular magnetic recording/reproducing device characterized in that a third inclined surface is formed that gradually moves away from the magnetic medium from the downstream side to the upstream side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24150486A JPS6396704A (en) | 1986-10-13 | 1986-10-13 | Perpendicular magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24150486A JPS6396704A (en) | 1986-10-13 | 1986-10-13 | Perpendicular magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6396704A true JPS6396704A (en) | 1988-04-27 |
Family
ID=17075309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24150486A Pending JPS6396704A (en) | 1986-10-13 | 1986-10-13 | Perpendicular magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6396704A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4001225A1 (en) * | 1989-01-17 | 1990-07-19 | Fuji Photo Film Co Ltd | Magnetic reading head |
| DE4042689C2 (en) * | 1989-01-17 | 2003-05-08 | Fuji Photo Film Co Ltd | Magnetic reading head |
-
1986
- 1986-10-13 JP JP24150486A patent/JPS6396704A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4001225A1 (en) * | 1989-01-17 | 1990-07-19 | Fuji Photo Film Co Ltd | Magnetic reading head |
| DE4001225C2 (en) * | 1989-01-17 | 2001-08-02 | Fuji Photo Film Co Ltd | Magnetic head |
| DE4042689C2 (en) * | 1989-01-17 | 2003-05-08 | Fuji Photo Film Co Ltd | Magnetic reading head |
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