JPH04139621A - Magnetic disk and method for working disk surface - Google Patents
Magnetic disk and method for working disk surfaceInfo
- Publication number
- JPH04139621A JPH04139621A JP26179590A JP26179590A JPH04139621A JP H04139621 A JPH04139621 A JP H04139621A JP 26179590 A JP26179590 A JP 26179590A JP 26179590 A JP26179590 A JP 26179590A JP H04139621 A JPH04139621 A JP H04139621A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- disk body
- css zone
- zone
- magnetic
- 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
- 238000000034 method Methods 0.000 title claims description 9
- 239000000758 substrate Substances 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims description 10
- 239000006061 abrasive grain Substances 0.000 claims description 5
- 230000000873 masking effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003672 processing method Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000007788 roughening Methods 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000003608 fece Anatomy 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、コンピュータの外部記憶装置に使用する磁気
ディスクおよびそのディスク面加工方法に係り、とくに
ディスク本体上のＣＳＳヅーンに「なし地面（微少なう
ねり面）Ｊを備えた磁気ディスクおよび、そのディスク
面の加工方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic disk used in an external storage device of a computer and a method for processing the surface of the disk. The present invention relates to a magnetic disk having a curved surface) and a method for processing the disk surface.
従来の磁気ディスクは、平滑な円形基板表面に微細な溝
を作って粗面とし、この粗面上に磁性膜を形成していた
。In conventional magnetic disks, fine grooves are formed on the surface of a smooth circular substrate to create a rough surface, and a magnetic film is formed on this rough surface.
磁気ディスク表面の面粗度は、記録再生特性からみれば
、より平坦である方が望ましいが、ヘッドと磁気ディス
ク間で発生する吸着現象から見れば、より粗い方が望ま
しい。磁気ディスクは、−般にこの両者の特性を満足す
る面粗度を模索することになるが、近年の高密度化によ
り面粗度は平坦側に決定されるようになり、吸着特性が
心配されるようになってきた。As for the surface roughness of the magnetic disk, it is desirable that it be flatter from the viewpoint of recording and reproducing characteristics, but it is desirable that it be rougher from the viewpoint of the attraction phenomenon that occurs between the head and the magnetic disk. For magnetic disks, it is generally necessary to search for a surface roughness that satisfies both of these characteristics, but with the recent increase in density, the surface roughness has been determined to be flat, and there are concerns about the adsorption characteristics. It's starting to happen.
ディスク装置には、ヘッドとディスクが接触・浮上を行
・うＣＳＳヅーンがあるが、上記吸着特性改善策として
、ＣＳＳヅーン粗面化が検討されている。Disk devices include CSS tunnels in which the head and disk come into contact and float, and roughening of the surface of the CSS tunnel is being considered as a measure to improve the above-mentioned adsorption characteristics.
〔発明が解決しようとする課題］
ＣＳＳゾーン粗面化技術は、−船釣に回転しているディ
スクに研磨液を供給し、Ｃ５Ｓゾーンに研磨テ・−ブ又
は研磨クロスを押圧し、テープ又はクロスをディスク半
径方向に数口程度往復運動させ、粗面化する方法がとら
れている。[Problems to be Solved by the Invention] The CSS zone surface roughening technology is as follows: - Supply polishing liquid to a rotating disk on a boat, press a polishing tab or polishing cloth onto the C5S zone, and apply tape or polishing cloth to the C5S zone. A method is used to roughen the surface by reciprocating the cloth several times in the radial direction of the disk.
上記方法は、粗面化には成功しているものの、Ｃ： Ｓ
ＳゾーンとＣＳＳゾーン外の領域の境において、０．
０２〜０．０５ Ｃμｍ〕μｍ〕段差が発生し、微少振
動が発生し磁気ヘッドの読み出し、書き込みが不安定と
なり、ヘッド浮上特性に影響するという問題が生じてい
た。Although the above method is successful in roughening the surface, C:S
At the boundary between the S zone and the area outside the CSS zone, 0.
02 to 0.05 C .mu.m] .mu.m] step difference occurs, minute vibrations occur, making reading and writing of the magnetic head unstable and affecting the flying characteristics of the head.
〔発明の目的］
本発明は、かかる従来例の有する不都合を改善し、とく
にディスク本体上におけるＣ８Ｓソーンの吸着特性を改
善し、磁気ヘッドを円滑に上昇させることを可能とした
磁気ディスクおよびディスク面加工方法を提供すること
にある。[Object of the Invention] The present invention improves the disadvantages of the conventional example, and particularly improves the adsorption characteristics of the C8S sawn on the disk body, and provides a magnetic disk and disk surface that make it possible to smoothly raise the magnetic head. The purpose is to provide a processing method.
（課題を解決するための手段〕
本発明の磁気ディスクでは、Ｃ８Ｓゾーンに「なし地面
」を有している。そして、このなし地面の加工形成方法
は、細かい砥粒を加えた溶液を、圧縮空気によりノズル
からＣ８Ｓゾーン以外をマスクした円形基板に吹きつけ
る等の方法を採っている。(Means for Solving the Problems) The magnetic disk of the present invention has a "free ground" in the C8S zone.The method for processing and forming this free ground involves compressing a solution containing fine abrasive grains. A method such as blowing air from a nozzle onto a circular substrate masking areas other than the C8S zone is adopted.
（実施例］
以下、本発明の一実施例を第１図ないし第３図に基づい
て説明する。(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.
ここで、第１図は磁気ディスクの基板表面のＣＳＳゾー
ン１に形成されたなし地面３を示す。Here, FIG. 1 shows a blank ground 3 formed in a CSS zone 1 on the surface of a substrate of a magnetic disk.
また、第２興は回転している第１図表面に研磨テープを
押しあて、表面を研磨した後の面状態４である。The second image is surface state 4 after polishing the surface by pressing the abrasive tape against the rotating surface in FIG.
第３図は第２図を立体的に表したものである。FIG. 3 is a three-dimensional representation of FIG.
なし地面３は、本実施例においては以下の如（Ｃ８Ｓゾ
ーン以外をマスクした円形基板に、３〜６１μｍ〕の粒
径をもつ砥粒を加えた溶液を、圧縮空気によりノズルか
ら吹き付ける。円形基板に衝突した砥粒は、表面に凹部
を作る。この砥粒は無数に不連続に衝突するため、表面
は無数の凹凸が形成され、なし地面３となる。なし地面
は２６μｒｎ ’Ｊ粉粒子場合、Ｒｍａｘｏ、２ Ｃ
μｍ：ｌ程度となる。In this example, the blank ground 3 is prepared by spraying a solution containing abrasive grains with a particle size of 3 to 61 μm on a circular substrate with compressed air through a nozzle as follows (on a circular substrate with the area other than the C8S zone masked). The abrasive grains that collide with the surface create recesses on the surface.As these abrasive grains collide countlessly discontinuously, countless unevenness is formed on the surface, resulting in a blank ground 3.The blank ground is 26 μrn 'J powder particles , Rmaxo, 2C
μm: approximately 1.
このなし地面を含む基板を回転させ、研磨液を供給し、
研磨テープを押圧し、表面を研磨する。Rotate the substrate containing this no ground and supply the polishing liquid,
Press the polishing tape and polish the surface.
研磨する量を０．１〔μｍ〕とすることにより、なし地
面のほぼ半分の面が削られ、第２図のような基板表面と
なる。また立体的に見れば、第３図のような表面を有す
ることになる。この状態は、簡単に言えば、無数の四部
がＣＳＳゾーンのみに有するディスク面が形成されたこ
とになる。これにより、Ｃ８ＳゾーンとＣ８Ｓゾーン以
外の領域の段差の発生がほぼ改善に解消される。By setting the polishing amount to 0.1 [μm], approximately half of the blank surface is removed, resulting in a substrate surface as shown in FIG. Moreover, when viewed three-dimensionally, it has a surface as shown in FIG. Simply put, this state means that a disk surface is formed that has countless four parts only in the CSS zone. As a result, the occurrence of the difference in level between the C8S zone and the area other than the C8S zone is almost completely eliminated.
Ｃ発明の効果〕
以上説明したように、本発明によると、磁気ディスク表
面のＣ８Ｓゾーンにｒなし地面」が形成されているので
、Ｃ８Ｓゾーンでの吸着特性が著しく改善され、またＣ
８ＳゾーンとＣＳＳゾーン以外の領域の段差がなくなる
ことから磁気ヘッドの浮上が安定し、同時に微少振動も
なくなることから１、磁気ヘッドの耐久性及び記録再生
特性が改善されるとい・う従来にない優れた磁気ディス
ク及びディスク面加工方法を提供することができる。[Effects of the C Invention] As explained above, according to the present invention, since a "r-free ground" is formed in the C8S zone on the magnetic disk surface, the adsorption characteristics in the C8S zone are significantly improved, and the C8S zone is significantly improved.
Since there is no difference in level between areas other than the 8S zone and the CSS zone, the flying of the magnetic head becomes stable, and at the same time, minute vibrations are also eliminated, which improves the durability and recording/reproducing characteristics of the magnetic head, which is unprecedented. An excellent magnetic disk and disk surface processing method can be provided.
第１図は本発明のなし地面を有する磁気ディスクの表面
を示す断面図、第２図は本発明のなし地面に研磨テープ
により表面を研磨した後の磁気ディスクの表面を示す断
面図、第３図は第２図の磁気ディスクの表面を示す斜視
図である。
１・・・・・・ＣＳ Ｓ ：／”−ン、２・・・・・・
ＣＳＳヅーン外、３・・・・・・なし地面、４・・・・
・・研磨テープによる研磨面。FIG. 1 is a sectional view showing the surface of a magnetic disk having a blank surface according to the present invention, FIG. This figure is a perspective view showing the surface of the magnetic disk of FIG. 2. 1...CS S:/"-n, 2...
Outside of CSS dung, 3...None ground, 4...
... Polished surface with polishing tape.
Claims (4)
ィスク本体上のＣＳＳゾーンになし地面が形成されてい
ることを特徴とする磁気ディスク。(1) A magnetic disk characterized in that it has a disk body made of a circular substrate, and a blank ground is formed in the CSS zone on the disk body.
いることを特徴とした請求項１記載の磁気ディスク。(2) The magnetic disk according to claim 1, wherein a polished surface is formed on the surface of the disk body.
ィスク本体上のＣＳＳゾーン以外をマスクしたのち当該
ディスク本体上に、細かい砥粒を含む溶液を圧縮空気と
共に吹きつけ、これによりなし地面を得ることを特徴と
したディスク面加工方法。(3) A disk body made of a circular substrate is provided, and after masking areas other than the CSS zone on the disk body, a solution containing fine abrasive grains is sprayed with compressed air onto the disk body, thereby obtaining a smooth surface. A disc surface processing method characterized by:
ィスク本体上のＣＳＳゾーン以外をマスクしたのち当該
ディスク本体上に、細かい砥粒を含む溶液を圧縮空気と
共に吹きつけることによりなし地面を形成し、 その後、前記マスクを取り除いてディスク本体の表面を
研磨することを特徴としたディスク面加工方法。(4) A disk body made of a circular substrate is provided, and after masking areas other than the CSS zone on the disk body, a free surface is formed by spraying a solution containing fine abrasive particles together with compressed air on the disk body. A method for processing a disk surface, the method comprising: thereafter removing the mask and polishing the surface of the disk body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26179590A JPH04139621A (en) | 1990-09-30 | 1990-09-30 | Magnetic disk and method for working disk surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26179590A JPH04139621A (en) | 1990-09-30 | 1990-09-30 | Magnetic disk and method for working disk surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04139621A true JPH04139621A (en) | 1992-05-13 |
Family
ID=17366821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26179590A Pending JPH04139621A (en) | 1990-09-30 | 1990-09-30 | Magnetic disk and method for working disk surface |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04139621A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5673156A (en) * | 1993-06-21 | 1997-09-30 | Komag, Inc. | Hard disk drive system having virtual contact recording |
-
1990
- 1990-09-30 JP JP26179590A patent/JPH04139621A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5673156A (en) * | 1993-06-21 | 1997-09-30 | Komag, Inc. | Hard disk drive system having virtual contact recording |
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