JPS59193580A - Magnetic disk device - Google Patents

Magnetic disk device

Info

Publication number
JPS59193580A
JPS59193580A JP6699583A JP6699583A JPS59193580A JP S59193580 A JPS59193580 A JP S59193580A JP 6699583 A JP6699583 A JP 6699583A JP 6699583 A JP6699583 A JP 6699583A JP S59193580 A JPS59193580 A JP S59193580A
Authority
JP
Japan
Prior art keywords
magnetic disk
surface roughness
air bearing
magnetic
disk
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.)
Granted
Application number
JP6699583A
Other languages
Japanese (ja)
Other versions
JP2666924B2 (en
Inventor
Shigeru Takekado
竹門　茂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP58066995A priority Critical patent/JP2666924B2/en
Publication of JPS59193580A publication Critical patent/JPS59193580A/en
Application granted granted Critical
Publication of JP2666924B2 publication Critical patent/JP2666924B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/58—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head for the purpose of maintaining alignment of the head relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
    • G11B5/60—Fluid-dynamic spacing of heads from record-carriers
    • G11B5/6005—Specially adapted for spacing from a rotating disc using a fluid cushion
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust

Abstract

PURPOSE:To secure the adsorbing performance between a magnetic head and a magnetic disk which is equivalent to a coated magnetic disk without using any special adsorption preventing device, by increasing the surface roughness of an air bearing part more than that of the magnetic disk. CONSTITUTION:A magnetic disk device contains a rotary magnetic disk 1 and a magnetic head 2 having an air bearing part. The surface roughness of the air bearing part is increased more than that of the disk 1. For instance, the disk 1 uses a plated medium magnetic disk (surface roughness: Rmax 0.02mum) and the surface roughness of the air bearing part of the head 2 is set at about Rmax 0.1mum. As a result, an adsorption phenomenon can be effectively reduced between the head 2 and the disk 1 without using any special adsorption preventing device that keeps a dry state inside the magnetic disk device.

Description

【発明の詳細な説明】 〔発明の属する技術分野〕 この発明は回転する磁気ディスク板とエアベアリング部
を持った磁気ヘッドにより構成される磁気ディスク装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] The present invention relates to a magnetic disk device comprising a rotating magnetic disk plate and a magnetic head having an air bearing section.

〔従来技術の問題点〕[Problems with conventional technology]

従来磁気ディスク板は磁性膜はディスク板に磁性体を塗
布することにより製作されてきた。しかし記録密度を増
すため近年磁性膜はメッキあるいはスパッタにより製作
されるようになった。Conventionally, magnetic disk plates have been manufactured by applying a magnetic film to the disk plate. However, in order to increase the recording density, magnetic films have recently been manufactured by plating or sputtering.

メッキあるいはスパッタによる磁気ディスク板では非運
転時にエアベアリング部と磁気ディスク板の間に空気中
の水分が露結し磁気ヘッドと磁気ディスク板が吸着し−
やずいという大きな欠点がある。When a magnetic disk plate is plated or sputtered, moisture in the air condenses between the air bearing part and the magnetic disk plate when not in operation, causing the magnetic head and the magnetic disk plate to attract each other.
It has a big drawback: it's annoying.

〔発明の目的〕[Purpose of the invention]

本発明は上述の欠点を解決し、メッキあるいはスパッタ
による磁気ディス板においても、特別な吸着防止装置を
用いることなく塗布型磁気ディスク板と同等の磁気ヘッ
ド−磁気ディスク板の吸着性向を持った磁気ディスク装
置を提供することを目的とする。The present invention solves the above-mentioned drawbacks, and enables a magnetic disk plate formed by plating or sputtering to have the same magnetic head-to-magnetic disk adsorption tendency as a coated type magnetic disk plate without using a special adhesion prevention device. The purpose is to provide disk devices.

〔発明の概要〕[Summary of the invention]

本発明によれば、エアベアリング部の表面和式が、磁気
ディスク板の表面粗さより大きくすることにより達成さ
れる。すなわち磁気ヘッドと磁気ディスクの板の間の吸
着は対向する二面の表面粗さに負相関があることが知ら
れている。例えば、塗布型ディスク板、メッキあるいは
スパッタによる磁気ディスク板、ガラス円板とテーパフ
ラット型磁気ヘッドの間の吸着現象を比べると、塗布型
ディスク板ではほとんど生じないが、ガラス円板でばき
わめてしばしば生じ、メッキあるいはスパッタによる磁
気ディスク板ではガラス円板はどでないが比較的吸着現
象が生じることが知られている。上記円板の表面粗ざは
、塗布型でＲｍａｘ　〜０．１７１　ｍメッキあるいは
スパッタでＲｍａｘ　＝　０．０２〜０．０４μｍ１ガ
ラス円板ではＲｍａｘ　＝　０．００２　μｍ　８度で
ある。一方磁気ヘッドのエアベアリング部の表面粗芒は
ガラス円板と同程度である。According to the present invention, this is achieved by making the surface roughness of the air bearing portion larger than the surface roughness of the magnetic disk plate. That is, it is known that the attraction between the magnetic head and the magnetic disk plate has a negative correlation with the surface roughness of the two opposing surfaces. For example, when comparing the adhesion phenomenon between a coated disk plate, a magnetic disk plate made by plating or sputtering, and a glass disk and a tapered flat magnetic head, it is found that it rarely occurs with coated disk plates, but very often with glass disks. It is known that a magnetic disk plate formed by plating or sputtering, although not a glass disk, is relatively susceptible to adsorption phenomena. The surface roughness of the above-mentioned disk is Rmax = 0.171 m for coating type, Rmax = 0.02 ~ 0.04 μm for plating or sputtering, and Rmax = 0.002 μm 8 degrees for glass disk. On the other hand, the surface roughness of the air bearing portion of the magnetic head is comparable to that of a glass disk.

以上の例より吸着現象が対向する二面の表面粗さに負の
相関があることがわかる。メッキあるいはスパッタによ
る磁気ディスク板で吸着現象が生じやすいのは磁気ディ
スク板の表面粗さがよくなってきたためと言える。本発
明は従来の磁気ヘッドのエアベアリング部と磁気ディス
ク板の表面粗妊の関係−（エアベアリング部の表面粗さ
が少ない）を逆転し、エアベアリング部の表面粗をを磁
気ディスク板の表面粗σより太きくしたことを特徴とし
ている。From the above examples, it can be seen that the adsorption phenomenon has a negative correlation with the surface roughness of the two opposing surfaces. It can be said that the reason why the adhesion phenomenon tends to occur on magnetic disk plates formed by plating or sputtering is that the surface roughness of magnetic disk plates has improved. The present invention reverses the conventional relationship between the surface roughness of the air bearing part of a magnetic head and the surface roughness of the magnetic disk plate (the surface roughness of the air bearing part is small), and changes the surface roughness of the air bearing part to the surface roughness of the magnetic disk plate. It is characterized by being thicker than the coarse σ.

〔発明の効果〕〔Effect of the invention〕

本発明によるとメッキあるいはスパッタによる磁気ディ
スク板による磁気ディスク装置においても、磁気ディス
ク装置内部を乾燥状態に保つような特別な吸着防止装置
を用いなくとも、磁気ヘッド−磁気ディスク板間の吸着
現象を効果的に低減できる。According to the present invention, even in a magnetic disk device using a magnetic disk plate formed by plating or sputtering, the adhesion phenomenon between the magnetic head and the magnetic disk plate can be prevented without using a special anti-adsorption device to keep the inside of the magnetic disk device dry. can be effectively reduced.

〔発明の実施例〕[Embodiments of the invention]

第１図に本発明による磁気ディスク装置を示す。 FIG. 1 shows a magnetic disk device according to the present invention.

ＩＪ−を磁気ディスク板、２はテーパフラット型磁気ヘ
ッドである。１の磁気ディスク板（ハ）メッキ媒体磁気
ディスク板（表面粗でＲ＋ｎａｘ：Ｆｏ、０２μｍ）を
使用し、２の磁気ヘッドのエアベアリング部の表面粗さ
はＲｍａｘ　＝　０．１　ｐｍ程度とする。第２図に表
面粗３　Ｒｍａｘ　＋Ｑ、ｌ　ｐｍのエアベアリング部
を斜線で示す。IJ- is a magnetic disk plate, and 2 is a tapered flat magnetic head. 1. Magnetic disk plate (c) Plating medium A magnetic disk plate (surface roughness R+nax:Fo, 02 μm) is used, and the surface roughness of the air bearing portion of the magnetic head 2 is approximately Rmax = 0.1 pm. In FIG. 2, the air bearing portion with a surface roughness of 3 Rmax +Q, l pm is indicated by diagonal lines.

〔発明の他の実施例〕[Other embodiments of the invention]

上例ではエアベアリング部全体の表面粗さをＲｍａｘ÷
０．１／ｊｍとしたが第３図の斜線部で示すようにフラ
ット部にかぎり表面粗さをＲｍａｘ＋０．１μｍにして
も同様の効果が得られる。In the above example, the surface roughness of the entire air bearing part is Rmax÷
Although the surface roughness was set to 0.1/jm, the same effect can be obtained by setting the surface roughness to Rmax+0.1 μm only in the flat portion, as shown by the hatched area in FIG.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本発明を説明するだめの磁気ディスク装置を示
す概略図、第２図は本装置に使用する磁気ヘッド−例を
示す斜視図、第３　ＩＭＩ　ｌ−ｊ本発明に使用する磁
気ヘッドの他の実施例を示す斜視図である。 １・・・磁気ディスク板　　２・・・磁気ヘッド代理人
　弁理士　則　近　ｌτ　佑　（はが１名）第１図 ？ 第２図 第３図Fig. 1 is a schematic diagram showing a magnetic disk device for explaining the present invention, Fig. 2 is a perspective view showing an example of a magnetic head used in this device, and 3rd IMI l-j is a magnetic head used in the present invention. FIG. 3 is a perspective view showing another embodiment of the invention. 1...Magnetic disk board 2...Magnetic head agent Patent attorney Rule Chika lτ Yu (1 person) Figure 1? Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] 回転する磁気ディスク板とエアベアリング部を持った磁
気ヘッドにより構成式れる磁気ディスク装置において、
エアベアリング部の表面粗きが、磁気ディスク板の表面
粗さより大きいことを特徴とする磁気ディスク装置。In a magnetic disk device consisting of a rotating magnetic disk plate and a magnetic head with an air bearing section,
A magnetic disk drive characterized in that the surface roughness of the air bearing portion is greater than the surface roughness of the magnetic disk plate.
JP58066995A 1983-04-18 1983-04-18 Magnetic disk device Expired - Lifetime JP2666924B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58066995A JP2666924B2 (en) 1983-04-18 1983-04-18 Magnetic disk device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58066995A JP2666924B2 (en) 1983-04-18 1983-04-18 Magnetic disk device

Publications (2)

Publication Number Publication Date
JPS59193580A true JPS59193580A (en) 1984-11-02
JP2666924B2 JP2666924B2 (en) 1997-10-22

Family

ID=13332092

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58066995A Expired - Lifetime JP2666924B2 (en) 1983-04-18 1983-04-18 Magnetic disk device

Country Status (1)

Country Link
JP (1) JP2666924B2 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833556A (en) * 1987-12-22 1989-05-23 Eastman Kodak Company Low drag stabilizer device for stabilizing the interface between a transducer and a moving medium
JPH0366079A (en) * 1989-08-04 1991-03-20 Matsushita Electric Ind Co Ltd Flying head for magneto-optical disk
JPH03254452A (en) * 1990-01-19 1991-11-13 Sharp Corp Magneto-optical recorder
US6003364A (en) * 1998-03-19 1999-12-21 Seagate Technology, Inc. Glide head for testing a disc surface
US6160683A (en) * 1997-08-15 2000-12-12 Seagate Technology Llc Slider for disc storage system
US6212042B1 (en) 1997-06-27 2001-04-03 Seagate Technology Llc Slider having air bearing surface which includes pads for disk storage system
US6369900B1 (en) 1998-04-16 2002-04-09 Seagate Technology Llc Glide head with features on its air bearing surface for improved fly height measurement
US6459547B1 (en) 1998-12-09 2002-10-01 Seagate Technology Llc Slider with pads and textured landing zone for disc storage system
US6487043B1 (en) 1997-12-04 2002-11-26 Seagate Technology Llc Cross texture head disc interface
US6529347B2 (en) 2000-10-13 2003-03-04 Seagate Technology Llc Disc drive slider having textured pads
US6536265B1 (en) 1999-12-02 2003-03-25 Seagate Technology Llc Micro-textured glide sliders for super-smooth media
US6552871B2 (en) 1998-05-21 2003-04-22 Komag, Incorporated Hard disk drive head-media system having reduced stiction and low fly height
US6603639B1 (en) 1998-07-21 2003-08-05 Seagate Technology Llc Slider for disc storage system
US6619105B1 (en) * 2000-04-12 2003-09-16 Seagate Technology Llc Glide head with anti-collapsing protection feature
US6683754B2 (en) 1998-05-21 2004-01-27 Komag, Inc. Hard disk drive head-media system having reduced stiction and low fly height
US6899456B2 (en) 1998-04-16 2005-05-31 Seagate Technology Llc Glide head for asperity detection

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5296012A (en) * 1976-02-09 1977-08-12 Nec Corp Floating magnetic head of contact start and stop type
JPS5423517A (en) * 1977-07-25 1979-02-22 Nippon Telegr & Teleph Corp <Ntt> Floating head slider
JPS56107363A (en) * 1980-01-31 1981-08-26 Nec Corp Floating type magnetic head
JPS57167135A (en) * 1981-04-03 1982-10-14 Nec Corp Magnetic disc

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5296012A (en) * 1976-02-09 1977-08-12 Nec Corp Floating magnetic head of contact start and stop type
JPS5423517A (en) * 1977-07-25 1979-02-22 Nippon Telegr & Teleph Corp <Ntt> Floating head slider
JPS56107363A (en) * 1980-01-31 1981-08-26 Nec Corp Floating type magnetic head
JPS57167135A (en) * 1981-04-03 1982-10-14 Nec Corp Magnetic disc

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833556A (en) * 1987-12-22 1989-05-23 Eastman Kodak Company Low drag stabilizer device for stabilizing the interface between a transducer and a moving medium
JPH0366079A (en) * 1989-08-04 1991-03-20 Matsushita Electric Ind Co Ltd Flying head for magneto-optical disk
JPH03254452A (en) * 1990-01-19 1991-11-13 Sharp Corp Magneto-optical recorder
US6212042B1 (en) 1997-06-27 2001-04-03 Seagate Technology Llc Slider having air bearing surface which includes pads for disk storage system
US6160683A (en) * 1997-08-15 2000-12-12 Seagate Technology Llc Slider for disc storage system
US6452752B1 (en) 1997-08-15 2002-09-17 Seagate Technology Llc Slider for disc storage system
US6487043B1 (en) 1997-12-04 2002-11-26 Seagate Technology Llc Cross texture head disc interface
US6003364A (en) * 1998-03-19 1999-12-21 Seagate Technology, Inc. Glide head for testing a disc surface
US6369900B1 (en) 1998-04-16 2002-04-09 Seagate Technology Llc Glide head with features on its air bearing surface for improved fly height measurement
US6899456B2 (en) 1998-04-16 2005-05-31 Seagate Technology Llc Glide head for asperity detection
US6552871B2 (en) 1998-05-21 2003-04-22 Komag, Incorporated Hard disk drive head-media system having reduced stiction and low fly height
US6683754B2 (en) 1998-05-21 2004-01-27 Komag, Inc. Hard disk drive head-media system having reduced stiction and low fly height
US6603639B1 (en) 1998-07-21 2003-08-05 Seagate Technology Llc Slider for disc storage system
US6459547B1 (en) 1998-12-09 2002-10-01 Seagate Technology Llc Slider with pads and textured landing zone for disc storage system
GB2369484B (en) * 1999-08-27 2003-09-10 Seagate Technology Llc Slider for disc storage system
US6536265B1 (en) 1999-12-02 2003-03-25 Seagate Technology Llc Micro-textured glide sliders for super-smooth media
US6619105B1 (en) * 2000-04-12 2003-09-16 Seagate Technology Llc Glide head with anti-collapsing protection feature
US6529347B2 (en) 2000-10-13 2003-03-04 Seagate Technology Llc Disc drive slider having textured pads

Also Published As

Publication number Publication date
JP2666924B2 (en) 1997-10-22

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