JPS62170022A - Production of magnetic recording medium - Google Patents
Production of magnetic recording mediumInfo
- Publication number
- JPS62170022A JPS62170022A JP1005186A JP1005186A JPS62170022A JP S62170022 A JPS62170022 A JP S62170022A JP 1005186 A JP1005186 A JP 1005186A JP 1005186 A JP1005186 A JP 1005186A JP S62170022 A JPS62170022 A JP S62170022A
- Authority
- JP
- Japan
- Prior art keywords
- polar
- lubricant
- disk
- magnetic recording
- lubricating
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000314 lubricant Substances 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 10
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 3
- 125000005010 perfluoroalkyl group Chemical group 0.000 claims abstract description 3
- 229920000570 polyether Polymers 0.000 claims abstract description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 1
- 230000001050 lubricating effect Effects 0.000 abstract description 7
- 238000005498 polishing Methods 0.000 abstract description 7
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 239000003599 detergent Substances 0.000 abstract description 2
- 230000007935 neutral effect Effects 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 239000010408 film Substances 0.000 description 14
- 238000005461 lubrication Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000007598 dipping method Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000006247 magnetic powder Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は磁気、１ヒ録媒体の製造方法に係り、特に耐層
・１す１性に優れた潤滑膜のＪ１β成方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a method for manufacturing a magnetic recording medium, and more particularly to a method for forming a lubricant film having excellent layer resistance and compatibility.
従来から、磁気記録媒体には、磁気ヘッドとの摩擦によ
る性能低ドを防ぐ為に、磁性膜表面には潤滑層が形成さ
れている。潤滑性物ｌαとしては種々用いられているが
、特にフッ素系オイルであるパーフルオロアルキルポリ
エーテル（以後Ｐ ［” Ｉ） ｌ！：と略す）が良効
とされ、スプレー・令布、浸漬塗布、蒸着等の方法で、
塗布されている。また最近では、このＰ ＦＰ Ｅの末
端に極性基を有する潤滑剤を磁−（記録媒体に適用する
ことにより、イソプロピルアルコールで清掃ｉ＋ｉ能な
、付着性の高い潤滑膜の形成が１１丁能であるとの提案
もされている（米国特許４２６８５５６）。また、極性
Ｐ ＦＰ ト：と潤滑剤と非極性［） ｌ・’ Ｐ Ｉ
！：潤滑剤を混合することにより、さらに効果が１−が
るとの提案も出されている。Conventionally, a lubricating layer has been formed on the surface of a magnetic recording medium in order to prevent performance deterioration due to friction with a magnetic head. Various lubricating substances have been used, but perfluoroalkyl polyether (hereinafter abbreviated as P["I)l!:], which is a fluorine-based oil, is said to be particularly effective, and can be applied by spraying, coating, or dipping. , by methods such as vapor deposition,
It is coated. Recently, it has become possible to form a highly adhesive lubricant film that can be cleaned with isopropyl alcohol by applying a lubricant that has a polar group at the end of PFP E to a magnetic recording medium. It has also been proposed (US Pat. No. 4,268,556) that there is a polar P FP t: and a lubricant and a non-polar [) l・' P I
! : It has also been proposed that the effect can be further increased by adding a lubricant.
潤バ°目１・λの必市値は潤滑膜が磁気記録媒体表面を
１−分に被覆する為には付若屯：１辷で’ Ｏｍｇ 、
／ ｎｒ以トの潤滑剤：１辷があるのが好ましく、また
、装置停市時の磁気ヘットと磁気記録媒体の吸、７１呪
象及び電気出勾のスペーシングロスを考１促した場合
ｉ（１；ｌパ１１１・λｊ・メは極力薄いことが望まし
く、潤滑剤：１１は、約１００■／ ｎｌ′以ドである
ことが好ましい。The required value of lubricant 1.λ is 1 mm in order to coat the surface of the magnetic recording medium with a lubricating film in 1 min.
/Nr or higher lubricant: It is preferable to have one side, and when considering the spacing loss due to suction between the magnetic head and magnetic recording medium when the device is stopped, 71 spells, and electrical declination.
It is desirable that the lubricant 11 is as thin as possible, and the lubricant 11 preferably has a thickness of about 100 cm/nl' or less.
しかしなから、磁性塗膜表面には、数ＬＯＯｍｇ／ ｒ
ｒ：もの水分をはしめ多くの物質が吸着しており、１・
１す膜でかつ被覆率の高い均一な潤滑膜を形成すること
は極めて困難な間顕であった。However, on the surface of the magnetic coating, several LOOmg/r
r: It traps moisture and adsorbs many substances, 1.
It was extremely difficult to form a uniform lubricating film with a high coverage.
［発明の１］的〕
本発明の「１的は、磁性膜表面に付着性が強くかつ彼覆
軒の高い、均一な潤滑膜を形成し、１摺・ｌすｊ性に優
れた磁気記録媒体を提供することにある。[Object 1 of the Invention] ``Object 1 of the present invention is to form a uniform lubricant film with strong adhesion and high coverage on the surface of the magnetic film, and to provide magnetic recording with excellent one-swivel and lubricant properties. The goal is to provide a medium.
〔発明の概・Ｗ〕
−・般に塗布形磁気記録媒体の製造方法は、数種槓の松
脂から成るバインダー中に、磁性粉。[Summary of the Invention/W] - Generally, a method for producing a coated magnetic recording medium involves adding magnetic powder to a binder made of several types of pine resin.
フィラーを分散させた塗料を、基板上に塗布、硬化させ
た後、テープポリッシング等による超精密研磨を行ない
、所定の磁性膜厚、表面精度を出した後潤滑剤をスプレ
ー、あるいは浸漬法で塗膜１１シている。潤滑ＩＶ；、
厚は先に述へたように、一定の範囲内しこ押さえろ必要
があるが５６３＆性塗ＩＩ’λ表面には、潤滑剤の数倍
もの水分が吸、７； しており、疎水性であるＰ Ｆ
Ｉ） Ｅを薄膜かつ均一に吸着させろことは困難であり
、最大の間顕であった・
本発明では、磁性１漠表面を研磨しなから極性Ｐ１・Ｐ
１ミを供給し、新たな塗膜表面（磁性粉、フィラー、バ
インダー）に逐次吸着させ、均一で被ｌｖ率の高い潤滑
層を形成することを特徴とする。また、この極性Ｐ Ｆ
Ｐ ｒ：を吸着させた潤滑層を下地として、この−１−
に非極性Ｐ Ｆ Ｐ Ｅ等の潤滑剤をスプレーあるいは
浸漬法で塗布することしこより、さらに大きな効果を１
）ることかできる。After coating the substrate with a filler dispersed in it and curing it, ultra-precision polishing is performed using tape polishing etc. to achieve the desired magnetic film thickness and surface accuracy, and then a lubricant is applied by spraying or dipping. There are 11 membranes. Lubrication IV;,
As mentioned earlier, it is necessary to keep the thickness within a certain range, but the surface of the 563 & Gekko II'λ absorbs several times as much water as the lubricant, and is hydrophobic. A certain P.F.
I) It is difficult to uniformly adsorb E in a thin film, and the maximum density is required.
It is characterized by supplying 1 mm and adsorbing it to the new coating surface (magnetic powder, filler, binder) successively to form a uniform lubricating layer with high lv coverage. Also, this polarity P F
This -1-
An even greater effect can be achieved by spraying or dipping a non-polar lubricant such as P F P E on the
) can be done.
以下、極性Ｐ Ｆ Ｐ Ｅの具体的構造について述へる
。基本的には（Ｃｔ、 Ｆ 、εＯ＞（７ご〜１・〜３
の整数）例えば、（ＣＦ、○）、 （ｃＦ、、ＣＦ。The specific structure of polar P F P E will be described below. Basically, (Ct, F, εO>(7go~1・~3
For example, (CF, ○), (cF,, CF.
０） 、（ＣＦ （ＣＦ３）ＣＦ２０×などを単位とし
て成るＩ） Ｆ Ｐ Ｌ’：を骨格としており、末端極
性〕、（とじテハ、 ＣＩ’ｌｚ○ｒ−１，−ＣＯＯ
ＣＨ，、−００００ＣＯＯＭ （ただし１Ｍは１価の金
属陽イオン）があげられる。0), (I consisting of CF (CF3) CF20x, etc. as units) F P L': is the skeleton, terminal polarity], (Toji Teha, CI'lz○r-1, -COO
CH,, -0000COOM (however, 1M is a monovalent metal cation).
以下、本発明の一実施例を説明する。 An embodiment of the present invention will be described below.
磁気記録媒体としては、エポキシ、フェノールおよび、
ポリビニルブチラールより成るバインダー中に、磁性粉
（γ−” ｃ２０Ｊ）ｌ フィラ（Δ１，０．）を分散
させて製造した１４インチ行の磁気ディスクを用い所定
の磁性膜厚まで仕１−研磨した後、
１” （ＣＦ（ＣＩ” 、）−ＣＦ、 ０）ｎ−ＣＦ（
ＣＦ、）Ｃ００１■
の構造式から成る極性１） Ｉ＝’ １１１５を１〜リ
クロロ１〜リフルオロエタンで５１１ｒ ；’ｉ％に希
釈して、約ＩＫ ／ ｌ−１１′の１１１をスプレー塗
布しなから、磁性１１９を約０．１μｍ研磨した。第１
図にその装置を示す、ディスク１を１ψ動装置（図示せ
ず）で内径を保持して２０ Ｏｒ・ρＩＩ＋で回・１シ
】させ、研磨テープ２を巻取りなから、加圧コｌ、ロー
ラ３でディスクｌへ押し当て両面同時に研磨する。同時
に潤滑剤供給ノズル４より、極性ＰＦＰＥを噴霧する。As magnetic recording media, epoxy, phenol and
After polishing to a predetermined magnetic film thickness using a 14-inch row magnetic disk manufactured by dispersing magnetic powder (γ-”c20J)l filler (Δ1,0.) in a binder made of polyvinyl butyral. , 1” (CF(CI”,)-CF, 0)n-CF(
CF, )C001■ Polar 1) Dilute I=' 1115 with 1~lichloro1~lifluoroethane to 511r;'i% and spray apply 111 of about IK/l-11'. Therefore, magnetic 119 was polished by about 0.1 μm. 1st
The device is shown in the figure.The disk 1 is held at its inner diameter with a 1ψ moving device (not shown) and rotated once at 20 Or.ρII+, and the abrasive tape 2 is wound up. The roller 3 is used to press the disk against the disk L and polish both sides at the same time. At the same time, polar PFPE is sprayed from the lubricant supply nozzle 4.
次に中性洗剤でディスク１を洗浄し、加工残渣物及び過
剰潤滑剤の除去を行った。Next, the disk 1 was washed with a neutral detergent to remove processing residue and excess lubricant.
この状態で磁性膜表面の、極性Ｐ）’ＰＥの膜厚をｌ’
Ｔ−ｒＲ（フーリエ変換型赤外分光分析）差スベク１〜
ルでｉ！＋１１１定すると、非極性１） Ｆ’ Ｐ Ｅ
で同様な作業を行った場合、潤滑剤はほとんど除去され
ていたのに対し、極性ＰＦＰＥの場合は、約５０λ付着
していた。次に被覆度の指標となる接触角（使用液二〇
−ヘキサデカン）の測定結果を第２図に示す。１の曲線
が本実施例の結果であるか、潤滑膜厚５０Ａ以外の点は
、極性ｒ） ｉ’ Ｉ） Ｅ：約５０Δの下地の」二に
非極性ｒ−’ ＦＰ ＩＥをスプレー塗布したもので、
潤滑１厚厚は両背の合計である。従来のスプレー法で５
ＯＡ塗布した場合、接触角は非極性Ｐ Ｆ Ｉ） Ｅ
で約２０度（曲線３）、Ｉ−６性Ｐ Ｆ Ｐ Ｅ テ約
５０度（曲線２）であるのに対して、本方式では約６５
度（曲線１）となり、被覆率が高い潤滑層が形成されて
いることか明らかである９次に第：３ ＋、２Ｊに潤滑
剤ｊ膜厚と、摺動強度の関係図を示す。潤滑膜厚１５０
Ａで比較してみても本方式（曲線１）では、従来方法（
曲線２，３）の約２ｆざの強度を得ることかできた。な
お、摺動強度は、ディスクの表面に摺動部材を押し当て
なからディスクを回転させ、潤滑効果が無くなるまでの
ディスクの回転数で表わしたものである。In this state, the polarity P)' PE film thickness on the magnetic film surface is l'
T-rR (Fourier transform infrared spectroscopy) difference subek 1~
Le de i! +111 constant, non-polar 1) F' P E
When a similar operation was performed, most of the lubricant was removed, whereas in the case of polar PFPE, about 50λ remained. Next, FIG. 2 shows the measurement results of the contact angle (used liquid 20-hexadecane), which is an index of coverage. The curve 1 is the result of this example, or the points other than the lubricant film thickness of 50A are polar r) i' I) E: Non-polar r-' FP IE was spray applied to the base of about 50Δ. Something,
Lubrication 1 thickness The thickness is the sum of both backs. 5 with traditional spray method
When OA is applied, the contact angle is non-polar P F I) E
20 degrees (curve 3) and about 50 degrees (curve 2) for I-6, whereas in this method it is about 65 degrees.
The relationship between the lubricant j film thickness and the sliding strength is shown in the ninth order (curve 1), which clearly shows that a lubricant layer with a high coverage is formed. Lubricant film thickness 150
Comparing with A, this method (curve 1) is lower than the conventional method (curve 1).
It was possible to obtain an intensity of about 2f of curves 2 and 3). The sliding strength is expressed by the number of rotations of the disk until the lubrication effect is lost when the sliding member is pressed against the surface of the disk and the disk is rotated.
［発明の効果］
本発明によれば、研磨と同時に極性潤滑剤を磁性膜表面
へ吸着させるため、付着力の大きな、均一で被覆率の高
い潤滑層を形成することができ、耐摺動性に優れた、磁
気記録媒体を製造することが可能である。[Effects of the Invention] According to the present invention, since a polar lubricant is adsorbed to the magnetic film surface at the same time as polishing, a lubricant layer with a large adhesion force, uniformity, and high coverage can be formed, and the sliding resistance is improved. It is possible to manufacture a magnetic recording medium with excellent properties.
第１図は研磨と同時に潤滑剤を供給する装置の概略図で
ある。
第２図は従来方法と本発明による方法で潤滑剤を塗布し
た場合の接触角−潤滑１模Ｊｒｆ、のグラフである。
第：３図は従東方θ；と本発明によるｌｊ法で１１°ｊ
１滑Ａ’ｌを塗布した場合の■・１摺動強度−潤滑１１
便厚のグラフである。FIG. 1 is a schematic diagram of an apparatus for supplying lubricant at the same time as polishing. FIG. 2 is a graph of contact angle vs. lubrication 1 model Jrf when lubricants are applied by the conventional method and the method according to the present invention. Fig. 3 shows 11°j using the lj method according to the present invention.
■・1 sliding strength when applying 1 sliding A'l - Lubrication 11
This is a graph of stool thickness.
Claims (1)
研磨面を瞬時に極性潤滑剤で覆うことを特徴とする磁気
記録媒体の製造方法 ２、前記潤滑剤の骨格構造が、一般式−（Ｃ＿ｋＦ＿２
＿ｋＯ）−（ただしｋは１から３の整数である）から成
り、少なくとも１つの極性末端基が −ＣＨ＿２ＯＨ −ＣＯＯＣＨ＿３ −ＣＯＯＨ −ＣＯＯＭ（ただしＭは１価の金属） であるような構造を有する極性パーフルオロアルキルポ
リエーテルである特許請求の範囲第１項に記載の磁気記
録媒体の製造方法。[Claims] 1. Using a lubricant having a polar group at the end as a grinding fluid,
A method 2 for manufacturing a magnetic recording medium characterized by instantly covering a polished surface with a polar lubricant, wherein the skeleton structure of the lubricant has the general formula -(C_kF_2
_kO)- (where k is an integer from 1 to 3), and has a structure in which at least one polar end group is -CH_2OH -COOCH_3 -COOH -COOM (where M is a monovalent metal) The method for producing a magnetic recording medium according to claim 1, wherein the magnetic recording medium is perfluoroalkyl polyether.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005186A JPS62170022A (en) | 1986-01-22 | 1986-01-22 | Production of magnetic recording medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1005186A JPS62170022A (en) | 1986-01-22 | 1986-01-22 | Production of magnetic recording medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62170022A true JPS62170022A (en) | 1987-07-27 |
Family
ID=11739595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1005186A Pending JPS62170022A (en) | 1986-01-22 | 1986-01-22 | Production of magnetic recording medium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62170022A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6521286B2 (en) | 2001-01-24 | 2003-02-18 | Fuji Electric Co., Ltd. | Method for manufacturing a magnetic recording medium |
-
1986
- 1986-01-22 JP JP1005186A patent/JPS62170022A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6521286B2 (en) | 2001-01-24 | 2003-02-18 | Fuji Electric Co., Ltd. | Method for manufacturing a magnetic recording medium |
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