JPH0646441B2 - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPH0646441B2 JPH0646441B2 JP60207661A JP20766185A JPH0646441B2 JP H0646441 B2 JPH0646441 B2 JP H0646441B2 JP 60207661 A JP60207661 A JP 60207661A JP 20766185 A JP20766185 A JP 20766185A JP H0646441 B2 JPH0646441 B2 JP H0646441B2
- Authority
- JP
- Japan
- Prior art keywords
- protective film
- magnetic recording
- recording medium
- present
- film
- 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.)
- Expired - Lifetime
Links
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は計算機用大容量ファイル装置等に用いられる磁
気記録媒体に関する。The present invention relates to a magnetic recording medium used in a large-capacity file device for a computer or the like.
従来、計算機の外部記録装置に用いられる磁気ディスク
装置は、高性能化する目的でコンタクト・スタート・ス
トップ（以後CSSと言う）方式を採用している。これに
用いる薄膜ディスクには磁性膜が磁気ヘッドにより摩
耗，損傷を防ぐ目的で炭素保護膜が形成されている。Conventionally, a magnetic disk device used as an external recording device of a computer employs a contact start stop (hereinafter referred to as CSS) method for the purpose of improving performance. A carbon protective film is formed on the thin film disk used for this purpose in order to prevent the magnetic film from being worn or damaged by the magnetic head.
上述した従来の炭素保護膜は自己潤滑効果により磁性膜
の損傷を防いでいる。しかし、CSS回数が多くなると、
炭素保護膜が摩耗し、ヘッドスライダーに摩耗粉が付着
し、ヘッドの浮上量が大きくなる欠点がある。ヘッドの
浮上量が大きくなると再生出力および分解能が悪化し、
記録情報が読出せなくなる。The conventional carbon protective film described above prevents damage to the magnetic film due to the self-lubricating effect. However, when the number of CSS increases,
There is a drawback that the carbon protective film is worn, wear powder is attached to the head slider, and the flying height of the head is increased. When the flying height of the head increases, the reproduction output and resolution deteriorate,
The recorded information cannot be read.
本発明は前記問題点を解消し、ヘッドスライダーに摩耗
粉が付着するのを防止した磁気記録媒体を提供するもの
である。The present invention solves the above problems and provides a magnetic recording medium in which abrasion powder is prevented from adhering to the head slider.
上記目的を達成するため、本発明による磁気記録媒体に
おいては、磁気記録層の表面に保護膜を有し、保護膜上
に潤滑剤を塗布した磁気記録媒体であって、 保護膜は、炭素保護膜であり、 潤滑剤は、主鎖の両側に、CH2OH の官能基を有する HOC
H2−CF2O−(C2F4O)P−(CF2O)q−CH2OHの構造をもつパー
フロロアルキルポリエーテルである。In order to achieve the above object, the magnetic recording medium according to the present invention is a magnetic recording medium having a protective film on the surface of a magnetic recording layer and a lubricant coated on the protective film, wherein the protective film is a carbon protective film. It is a film, and the lubricant is HOC having CH 2 OH functional groups on both sides of the main chain.
H 2 -CF 2 O- (C 2 F 4 O) P - a perfluoroalkyl polyether having (CF 2 O) q structure of -CH 2 OH.
次に本発明の実施例について図面を参照して説明する。 Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例の縦断面図である。基板１の
上にめっき法およびスパッタ法によりCo系磁性合金膜２
を形成する。その上に炭素保護膜３をスパッタ法により
形成する。次に潤滑剤４としてフロン系溶剤に溶したHO
CH2−CF2O−(C2F4O)p−(CF2O)q−C2OHのパーフロロアル
キルポリエーテルを塗布し、膜厚が約10Å程度になるよ
うにする。FIG. 1 is a vertical sectional view of an embodiment of the present invention. Co-based magnetic alloy film 2 on substrate 1 by plating and sputtering
To form. A carbon protective film 3 is formed thereon by a sputtering method. Next, HO dissolved in a fluorocarbon solvent as lubricant 4
CH 2 -CF 2 O- (C 2 F 4 O) p - (CF 2 O) was applied to q -C 2 OH perfluoroalkyl polyethers, so that film thickness of about 10 Å.
以上のように作製した磁気ディスク媒体をMnZnフェライ
トのウェンチェスターヘッドを使用し、摩擦係数を測定
した。第２図に従来の炭素保護膜のみの媒体と本発明の
媒体の平均動摩擦係数と静摩擦係数を示す。The friction coefficient of the magnetic disk medium manufactured as described above was measured using a Wnchester head made of MnZn ferrite. FIG. 2 shows the average dynamic friction coefficient and static friction coefficient of the conventional medium having only the carbon protective film and the medium of the present invention.
本発明の媒体の摩擦係数は小さいことがわかる。次にCS
S耐久性試験を行った。従来の媒体では100回のCSS回数
においてヘッドスライダーに炭素摩耗粉が付着するが、
本発明の媒体は30000回のCSS回数においてもスライダー
に炭素摩耗粉は付着しないことがわかった。It can be seen that the friction coefficient of the medium of the present invention is small. Then CS
An S durability test was conducted. With conventional media, carbon wear powder adheres to the head slider after 100 CSS cycles,
It was found that the medium of the present invention did not adhere carbon abrasion powder to the slider even after the number of CSS times of 30,000.
以上説明したように本発明は炭素保護膜の上に、潤滑剤
として特に主鎖の両側にCH2OHの官能基を有するHOCH2-C
F2O−(C2F4O)p−(CF2O)q−CH2OHのパーフロロアルキル
ポリエーテルを選定し、これを炭素保護膜上に塗布する
ことにより、炭素保護膜の摩耗粉を無くすことができる
効果がある。As described above, the present invention provides a HOCH 2 -C having a CH 2 OH functional group as a lubricant, particularly on both sides of the main chain, on a carbon protective film.
F 2 O- (C 2 F 4 O) p - (CF 2 O) selects a perfluoroalkyl polyether of q -CH 2 OH, by which the coating on the carbon protective film, the wear of the carbon protective film It has the effect of eliminating powder.
第１図は本発明の磁気ディスク媒体の縦断面図、 第２図は従来の磁気ディスク媒体と本発明の磁気ディス
ク媒体の平均動摩擦係数と静摩擦係数とを示す試験結果
を示す図である。 １……基板、２……磁気記録膜(Co 系磁性合金膜)、３
……炭素保護膜、４……HOCH2−CF2O−(C2F4O)p−(CF
2O)q−CH2OHの潤滑剤。FIG. 1 is a longitudinal sectional view of a magnetic disk medium of the present invention, and FIG. 2 is a diagram showing test results showing the average dynamic friction coefficient and static friction coefficient of a conventional magnetic disk medium and the magnetic disk medium of the present invention. 1 ... Substrate, 2 ... Magnetic recording film (Co-based magnetic alloy film), 3
…… Carbon protective film, 4 …… HOCH 2 −CF 2 O− (C 2 F 4 O) p − (CF
2 O) q- CH 2 OH lubricant.
Claims (1)
上に潤滑剤を塗布した磁気記録媒体であって、 保護膜は、炭素保護膜であり、 潤滑剤は、主鎖の両側に、CH2OH の官能基を有する HOC
H2−CF2O−(C2F4O)P−(CF2O)q−CH2OHの構造をもつパー
フロロアルキルポリエーテルであることを特徴とする磁
気記録媒体。1. A magnetic recording medium having a protective film on the surface of a magnetic recording layer, the protective film being coated with a lubricant, wherein the protective film is a carbon protective film, and the lubricant is a main chain. HOC with CH 2 OH functional groups on both sides
H 2 -CF 2 O- (C 2 F 4 O) P - (CF 2 O) a magnetic recording medium, characterized in that q is perfluoroalkyl polyether having the structure -CH 2 OH.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60207661A JPH0646441B2 (en) | 1985-09-19 | 1985-09-19 | Magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60207661A JPH0646441B2 (en) | 1985-09-19 | 1985-09-19 | Magnetic recording medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6266417A JPS6266417A (en) | 1987-03-25 |
| JPH0646441B2 true JPH0646441B2 (en) | 1994-06-15 |
Family
ID=16543461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60207661A Expired - Lifetime JPH0646441B2 (en) | 1985-09-19 | 1985-09-19 | Magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0646441B2 (en) |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0320241A3 (en) * | 1987-12-07 | 1991-12-11 | Hitachi Maxell Ltd. | Magnetic recording medium and process for preparing the same |
| SG130014A1 (en) | 2002-09-03 | 2007-03-20 | Hoya Corp | Magnetic recording disk and process for manufacturing thereof |
| JP2004319058A (en) | 2003-03-31 | 2004-11-11 | Hoya Corp | Magnetic disk manufacturing method and magnetic disk |
| CN1910267B (en) | 2004-01-14 | 2011-01-12 | Hoya株式会社 | Lubricant for magnetic disk, process for producing the same, magnetic disk and process for producing the same |
| JP4375617B2 (en) | 2004-09-27 | 2009-12-02 | Ｈｏｙａ株式会社 | Magnetic disk lubricant manufacturing method, magnetic disk lubricant, magnetic disk, and magnetic disk manufacturing method |
| JP4654339B2 (en) | 2006-01-23 | 2011-03-16 | ダブリュディ・メディア・シンガポール・プライベートリミテッド | Magnetic disk |
| US8257783B2 (en) | 2006-03-29 | 2012-09-04 | Wd Media (Singapore) Pte. Ltd. | Magnetic disk and method of manufacturing the same |
| US8178480B2 (en) | 2006-09-29 | 2012-05-15 | Wd Media (Singapore) Pte. Ltd. | Lubricant for magnetic disk, process for producing the same, and magnetic disk |
| JP5134413B2 (en) | 2008-03-30 | 2013-01-30 | ダブリュディ・メディア・シンガポール・プライベートリミテッド | Magnetic disk and manufacturing method thereof |
| WO2009123043A1 (en) | 2008-03-30 | 2009-10-08 | Hoya株式会社 | Magnetic disk and process for producing the magnetic disk |
| JP5453666B2 (en) | 2008-03-30 | 2014-03-26 | ダブリュディ・メディア・シンガポール・プライベートリミテッド | Magnetic disk and manufacturing method thereof |
| US9177586B2 (en) | 2008-09-30 | 2015-11-03 | WD Media (Singapore), LLC | Magnetic disk and manufacturing method thereof |
| US8846137B2 (en) | 2009-02-19 | 2014-09-30 | Wd Media (Singapore) Pte. Ltd. | Method of manufacturing a magnetic disk |
| JP2010250929A (en) | 2009-03-27 | 2010-11-04 | Wd Media Singapore Pte Ltd | Lubricant compound for magnetic disk, magnetic disk, and method of manufacturing the same |
| JP5743438B2 (en) | 2010-06-22 | 2015-07-01 | ダブリュディ・メディア・シンガポール・プライベートリミテッド | Lubricant for magnetic disk, magnetic disk and manufacturing method thereof |
| JP5835874B2 (en) | 2010-06-22 | 2015-12-24 | ダブリュディ・メディア・シンガポール・プライベートリミテッド | Manufacturing method of magnetic disk |
| JP5600202B1 (en) | 2013-12-05 | 2014-10-01 | 昭和電工株式会社 | Lubricant for magnetic recording medium, magnetic recording medium, method for manufacturing magnetic recording medium, and magnetic recording / reproducing apparatus |
| JP5600222B1 (en) | 2014-01-16 | 2014-10-01 | 昭和電工株式会社 | Lubricant for magnetic recording medium, magnetic recording medium, method for manufacturing magnetic recording medium, and magnetic recording / reproducing apparatus |
| US10559320B2 (en) | 2014-12-19 | 2020-02-11 | Showa Denko K.K. | Magnetic recording medium and magnetic recording/reproducing apparatus |
| US10199064B2 (en) | 2015-02-18 | 2019-02-05 | Showa Denko K.K. | Magnetic recording medium, and magnetic recording and reproducing apparatus |
| CN106340313A (en) | 2015-07-08 | 2017-01-18 | 昭和电工株式会社 | Magnetic recording medium and a magnetic recording reproducing apparatus |
| CN106548791B (en) | 2015-09-18 | 2019-04-09 | 昭和电工株式会社 | Magnetic recording media and magnetic recorder/reproducer |
| JP2018076404A (en) | 2016-11-07 | 2018-05-17 | 昭和電工株式会社 | Organofluorine compound and lubricant |
| WO2019004274A1 (en) | 2017-06-30 | 2019-01-03 | 昭和電工株式会社 | Organofluorine compound, lubricant, and method for treating magnetic recording media |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961106A (en) * | 1982-09-30 | 1984-04-07 | Nec Corp | Magnetic memory body |
-
1985
- 1985-09-19 JP JP60207661A patent/JPH0646441B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6266417A (en) | 1987-03-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |