JPS6266417A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- JPS6266417A JPS6266417A JP20766185A JP20766185A JPS6266417A JP S6266417 A JPS6266417 A JP S6266417A JP 20766185 A JP20766185 A JP 20766185A JP 20766185 A JP20766185 A JP 20766185A JP S6266417 A JPS6266417 A JP S6266417A
- Authority
- JP
- Japan
- Prior art keywords
- protective film
- carbon protective
- magnetic recording
- cf2o
- 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.)
- Granted
Links
Landscapes
- Magnetic Record Carriers (AREA)
- Lubricants (AREA)
- Paints Or Removers (AREA)
Abstract
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。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording medium used in large-capacity file devices for computers and the like.
従来、計算機の外部記憶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Ｃ８Ｓ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, magnetic disk devices used as external storage devices for computers have adopted a contact start/stop (hereinafter referred to as C8S) 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 out and 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、Ｃ８Ｓ回数が多くなると
、炭素保護膜が摩耗し、ヘッドスライダ−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 its self-lubricating effect. However, when the number of C8S increases, the carbon protective film is worn out, abrasion powder adheres to the head slider, and the flying height of the head increases. As the flying height of the head increases, the reproduction output and resolution deteriorate, making it impossible to read recorded information.
本発明は前記問題点を解消し、ヘッドスライダ−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 that prevents abrasion particles from adhering to the head slider.
本発明の磁気記録媒体は主鎖の両側にＣＨ２ＯＨの官能
基を有するＨＯＣＨ２−ＣＦ２Ｏ−（０２Ｆ４Ｏ）ｐ−
（ＣＦ２Ｏ）。The magnetic recording medium of the present invention has HOCH2-CF2O-(02F4O)p- having CH2OH functional groups on both sides of the main chain.
(CF2O).
−ＣＨ２ＯＨの構造ヲモつツク−フロロアルキルポリエ
ーテルの潤滑剤を磁気記録層の炭素保護膜上に塗布した
ことを特徴とするものである。The structure of -CH2OH is characterized in that a fluoroalkyl polyether lubricant is coated on the carbon protective film of the magnetic recording layer.
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。FIG. 1 is a longitudinal sectional view of one embodiment of the present invention.
基板ｌ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。次にフロン系溶剤に溶したＨＯＣ
Ｈ２−ＣＦ２Ｏ−（Ｃ２Ｆ４Ｏ）ｐ−（ＣＦ２Ｏ）、−
ＣＨ２ＯＨツバ−フロロアルキルポリエーテルを塗布し
、膜厚が約１０Ｘ程度になるようにする。A Co-based magnetic alloy film 2 is formed on a substrate l by plating and sputtering. A carbon protective film 3 is formed thereon by sputtering. Next, HOC dissolved in fluorocarbon solvent
H2-CF2O-(C2F4O)p-(CF2O), -
Apply CH2OH fluoroalkyl polyether to a film thickness of about 10X.
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 coefficient of friction of the magnetic disk medium produced as described above was measured using a MnZn ferrite Wenchester head. FIG. 2 shows the average dynamic friction coefficient and static friction coefficient of a conventional medium having only a carbon protective film and a 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。It can be seen that the friction coefficient of the medium of the present invention is small.
次にＣＳＳ耐久性試験を行った。従来の媒体では１００
回のＣ８Ｓ回数においてヘッドスライダ−に炭素摩耗粉
が付着するが、本発明の媒体は３００００回のＣ８Ｓ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。Next, a CSS durability test was conducted. 100 in traditional media
Although carbon abrasion powder adheres to the head slider after 30,000 C8S cycles, it was found that with the medium of the present invention, carbon abrasion powder does not adhere to the slider even after 30,000 C8S cycles.
以上説明したように本発明は炭素保護膜の上に、主鎖の
両側にＣＨ２ＯＨの官能基を有するＨｏｃＨ２−ＣＦ２
゜−（Ｃ２Ｆ４Ｏ）ｐ −（ＣＦ２Ｏ）、−Ｃ■１２Ｏ
Ｈ（７）バー ７００−ｙ ｋキルポリエーテルの潤滑
剤を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 explained above, the present invention provides HocH2-CF2 having CH2OH functional groups on both sides of the main chain on the carbon protective film.
゜-(C2F4O)p-(CF2O), -C■12O
H(7) Bar 700-y By applying a k-kill polyether lubricant, there is an effect of eliminating abrasion powder of the carbon protective film.
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−
（Ｃ２Ｆ’４０）ｐ−（ＣＦ２Ｏ）９−ＣＨ２ＯＨの潤
滑剤。FIG. 1 is a longitudinal cross-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 a magnetic disk medium of the present invention. DESCRIPTION OF SYMBOLS 1... Substrate, 2... Magnetic recording film (Co-based magnetic alloy film), 3... Carbon protective film, 4-HOCH2-CF2O-
(C2F'40)p-(CF2O)9-CH2OH lubricant.
Claims (1)
膜を形成した磁気記録媒体において、主鎖の両側に、Ｃ
Ｈ＿２ＯＨの官能基を有するＨＯＣＨ＿２−ＣＦ＿２Ｏ
−（Ｃ＿２Ｆ＿４Ｏ）＿ｐ−（ＣＦ＿２Ｏ）＿ｑ−ＣＨ
＿２ＯＨの構造をもつパーフロロアルキルポリエーテル
の潤滑剤を前記炭素保護膜上に塗布したことを特徴とす
る磁気記録媒体。(1) In a magnetic recording medium in which a carbon protective film is formed on the surface of the magnetic recording layer to improve durability, carbon is added on both sides of the main chain.
HOCH_2-CF_2O with H_2OH functional group
-(C_2F_4O)_p-(CF_2O)_q-CH
A magnetic recording medium characterized in that a lubricant of perfluoroalkyl polyether having a structure of _2OH is coated on the carbon protective film.
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 true JPS6266417A (en) | 1987-03-25 |
| JPH0646441B2 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) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0320241A2 (en) * | 1987-12-07 | 1989-06-14 | Hitachi Maxell Ltd. | Magnetic recording medium and process for preparing the same |
| US7105241B2 (en) | 2003-03-31 | 2006-09-12 | Hoya Corporation | Magnetic disk and method of manufacturing same |
| US7252897B2 (en) | 2002-09-03 | 2007-08-07 | Hoya Corporation | Magnetic recording disk and process for manufacture thereof |
| US7531485B2 (en) | 2004-09-27 | 2009-05-12 | Hoya Corporation | Method of producing a lubricant for a magnetic disk, lubricant for a magnetic disk, magnetic disk, and method of producing a magnetic disk |
| US7833641B2 (en) | 2006-01-23 | 2010-11-16 | Wd Media (Singapore) Pte. Ltd. | Magnetic disk |
| US8012920B2 (en) | 2004-01-14 | 2011-09-06 | Wd Media (Singapore) Pte. Ltd. | Lubricant for magnetic disks, method for producing the lubricant used in the magnetic disks, and method for 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 |
| US8257783B2 (en) | 2006-03-29 | 2012-09-04 | Wd Media (Singapore) Pte. Ltd. | Magnetic disk and method of manufacturing the same |
| US8492011B2 (en) | 2009-03-27 | 2013-07-23 | WD Media (Singapore) Pte, Ltd. | Lubricant compound for a magnetic disk, magnetic disk, and method of manufacturing the same |
| US8697262B2 (en) | 2010-06-22 | 2014-04-15 | Wd Media (Singapore) Pte. Ltd. | Lubricant for magnetic disc, magnetic disc and method of producing the same |
| US8846137B2 (en) | 2009-02-19 | 2014-09-30 | Wd Media (Singapore) Pte. Ltd. | Method of manufacturing a magnetic disk |
| US8920872B2 (en) | 2010-06-22 | 2014-12-30 | Wd Media (Singapore) Pte. Ltd. | Method of producing a magnetic recording disc |
| US8999533B2 (en) | 2008-03-30 | 2015-04-07 | Wd Media (Singapore) Pte. Ltd. | Magnetic disk and method of manufacturing the same |
| US9005782B2 (en) | 2008-03-30 | 2015-04-14 | WD Media, LLC | Magnetic disk and method of manufacturing the same |
| US9245568B2 (en) | 2008-03-30 | 2016-01-26 | Wd Media (Singapore) Pte. Ltd. | Magnetic disk and method of manufacturing the same |
| US9349403B2 (en) | 2014-01-16 | 2016-05-24 | Showa Denko K.K. | Lubricant for magnetic recording medium, magnetic recording medium, manufacturing method of magnetic recording medium, and magnetic recording and reproducing device |
| US9672857B2 (en) | 2013-12-05 | 2017-06-06 | Showa Denko K.K. | Lubricant for magnetic recording medium, magnetic recording medium, manufacturing method of magnetic recording medium, and magnetic recording and reproducing device |
| US9984715B2 (en) | 2008-09-30 | 2018-05-29 | WD Media, LLC | Magnetic disk and manufacturing method thereof |
| US10074396B2 (en) | 2015-09-18 | 2018-09-11 | Showa Denko K.K. | Magnetic recording medium and magnetic recording and reproducing apparatus |
| US10079036B2 (en) | 2015-07-08 | 2018-09-18 | Showa Denko K.K. | Magnetic recording medium and magnetic recording and reproducing apparatus |
| US10199064B2 (en) | 2015-02-18 | 2019-02-05 | Showa Denko K.K. | Magnetic recording medium, and magnetic recording and reproducing apparatus |
| US10246553B2 (en) | 2016-11-07 | 2019-04-02 | Showa Denko K.K. | Organic fluorine compound and lubricant |
| US10559320B2 (en) | 2014-12-19 | 2020-02-11 | Showa Denko K.K. | Magnetic recording medium and magnetic recording/reproducing apparatus |
| US11525032B2 (en) | 2017-06-30 | 2022-12-13 | Showa Denko K.K. | Organic fluorine compound, lubricant, and processing method of magnetic recording medium |
Citations (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
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5961106A (en) * | 1982-09-30 | 1984-04-07 | Nec Corp | Magnetic memory body |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0320241A2 (en) * | 1987-12-07 | 1989-06-14 | Hitachi Maxell Ltd. | Magnetic recording medium and process for preparing the same |
| US7252897B2 (en) | 2002-09-03 | 2007-08-07 | Hoya Corporation | Magnetic recording disk and process for manufacture thereof |
| US7277254B2 (en) | 2002-09-03 | 2007-10-02 | Hoya Corporation | Magnetic recording disk and process for manufacture thereof |
| US7105241B2 (en) | 2003-03-31 | 2006-09-12 | Hoya Corporation | Magnetic disk and method of manufacturing same |
| US8012920B2 (en) | 2004-01-14 | 2011-09-06 | Wd Media (Singapore) Pte. Ltd. | Lubricant for magnetic disks, method for producing the lubricant used in the magnetic disks, and method for manufacturing the same |
| US7531485B2 (en) | 2004-09-27 | 2009-05-12 | Hoya Corporation | Method of producing a lubricant for a magnetic disk, lubricant for a magnetic disk, magnetic disk, and method of producing a magnetic disk |
| US7833641B2 (en) | 2006-01-23 | 2010-11-16 | Wd Media (Singapore) Pte. Ltd. | 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 |
| US8999533B2 (en) | 2008-03-30 | 2015-04-07 | Wd Media (Singapore) Pte. Ltd. | Magnetic disk and method of manufacturing the same |
| US9245568B2 (en) | 2008-03-30 | 2016-01-26 | Wd Media (Singapore) Pte. Ltd. | Magnetic disk and method of manufacturing the same |
| US9005782B2 (en) | 2008-03-30 | 2015-04-14 | WD Media, LLC | Magnetic disk and method of manufacturing the same |
| US9984715B2 (en) | 2008-09-30 | 2018-05-29 | WD Media, 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 |
| US8492011B2 (en) | 2009-03-27 | 2013-07-23 | WD Media (Singapore) Pte, Ltd. | Lubricant compound for a magnetic disk, magnetic disk, and method of manufacturing the same |
| US8697262B2 (en) | 2010-06-22 | 2014-04-15 | Wd Media (Singapore) Pte. Ltd. | Lubricant for magnetic disc, magnetic disc and method of producing the same |
| US8920872B2 (en) | 2010-06-22 | 2014-12-30 | Wd Media (Singapore) Pte. Ltd. | Method of producing a magnetic recording disc |
| US9672857B2 (en) | 2013-12-05 | 2017-06-06 | Showa Denko K.K. | Lubricant for magnetic recording medium, magnetic recording medium, manufacturing method of magnetic recording medium, and magnetic recording and reproducing device |
| US9349403B2 (en) | 2014-01-16 | 2016-05-24 | Showa Denko K.K. | Lubricant for magnetic recording medium, magnetic recording medium, manufacturing method of magnetic recording medium, and magnetic recording and reproducing device |
| 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 |
| US10079036B2 (en) | 2015-07-08 | 2018-09-18 | Showa Denko K.K. | Magnetic recording medium and magnetic recording and reproducing apparatus |
| US10074396B2 (en) | 2015-09-18 | 2018-09-11 | Showa Denko K.K. | Magnetic recording medium and magnetic recording and reproducing apparatus |
| US10246553B2 (en) | 2016-11-07 | 2019-04-02 | Showa Denko K.K. | Organic fluorine compound and lubricant |
| US11525032B2 (en) | 2017-06-30 | 2022-12-13 | Showa Denko K.K. | Organic fluorine compound, lubricant, and processing method of magnetic recording medium |
| US11820862B2 (en) | 2017-06-30 | 2023-11-21 | Resonac Corporation | Organic fluorine compound, lubricant, and processing method of magnetic recording medium |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0646441B2 (en) | 1994-06-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |