JPS6316419A - Magnetic disk - Google Patents
Magnetic diskInfo
- Publication number
- JPS6316419A JPS6316419A JP16114786A JP16114786A JPS6316419A JP S6316419 A JPS6316419 A JP S6316419A JP 16114786 A JP16114786 A JP 16114786A JP 16114786 A JP16114786 A JP 16114786A JP S6316419 A JPS6316419 A JP S6316419A
- Authority
- JP
- Japan
- Prior art keywords
- disk
- magnetic
- outer periphery
- paint
- substrate
- 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
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 239000003973 paint Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 239000011248 coating agent Substances 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 238000004528 spin coating Methods 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 15
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000630 rising effect Effects 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、磁気記憶装置に用いられる磁気ディスクに関
し、特にドーナツ状非磁性合金円盤等からなる基板上に
スピンコード法等によって磁性塗料が塗布された磁気デ
ィスクに関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a magnetic disk used in a magnetic storage device, and in particular, the present invention relates to a magnetic disk used in a magnetic storage device, and in particular, a magnetic paint is coated on a substrate made of a donut-shaped nonmagnetic alloy disk or the like by a spin code method or the like. related to magnetic disks.
従来、この種の磁気ディスクは、ドーナツ状の非磁性合
金円盤にスピンコード法によって磁性記録媒体層が形成
され、非磁性合金円盤の外周のエツジ部はダイヤモンド
バイト等の工具によって加工され、面取りを施しである
。この面取りはＣＯ１２〜ｃｉ、ｏ程度のものが多い。Conventionally, in this type of magnetic disk, a magnetic recording medium layer is formed on a donut-shaped non-magnetic alloy disk by the spin code method, and the outer edge of the non-magnetic alloy disk is machined with a tool such as a diamond cutting tool to chamfer it. It is alms. This chamfering is often of the order of CO12 to ci, o.
上述した従来の磁気ディスクの非磁性合金円盤の外周の
面取り部の断面形状は拡大すると第３図に示すように、
切削加工の影響により、面取り部の近傍では、外周に近
づくにつれて非磁性合金円盤１の表面が幾分盛り上がる
形状となっているため、スピンコード法によって円盤表
面に磁性体の塗料を塗布した時、この盛り上り部の影響
で、エツジ端部に塗料が回り込まないため塗料の切れが
悪くなったり（塗料を遠心力によって十分に振り切るこ
とができず塗料がエツジ付近に余計に溜る状態）放置し
ておくと、第４図に示すように非磁性合金円盤の外周部
の盛り上り部分に磁性体塗料４が厚目について盛り上っ
たりする等の欠点があった。The cross-sectional shape of the chamfered portion on the outer periphery of the non-magnetic alloy disk of the conventional magnetic disk described above is as shown in FIG. 3 when enlarged.
Due to the influence of the cutting process, the surface of the non-magnetic alloy disk 1 becomes somewhat raised near the chamfer as it approaches the outer periphery, so when magnetic paint is applied to the disk surface by the spin code method, Due to the influence of this raised part, the paint does not wrap around the edges of the edges, making it difficult to cut the paint. However, as shown in FIG. 4, there were drawbacks such as the magnetic paint 4 being thick and bulging on the bulges on the outer periphery of the non-magnetic alloy disk.
本発明の磁気ディスクは、ドーナツ状の基板上に磁性塗
料が塗布された磁気ディスクにおいて、前記基板の外周
のエツジ部が円弧状に加工されたことを特徴とする。The magnetic disk of the present invention is a magnetic disk having a donut-shaped substrate coated with magnetic paint, and is characterized in that an edge portion of the outer periphery of the substrate is processed into an arc shape.
次に、本発明について図面を参照して説明する。 Next, the present invention will be explained with reference to the drawings.
第１図に本発明の一実施例の磁気ディスクの非磁性合金
円盤の外周部の板厚方向の断面図を示す。FIG. 1 shows a cross-sectional view in the thickness direction of the outer periphery of a non-magnetic alloy disk of a magnetic disk according to an embodiment of the present invention.
非磁性合金円盤１′の外周のエツジ部は円弧状に加工さ
れて円弧部５をなし、従来の磁気ディスクの非磁性合金
円盤１の表面のような盛り上りはない。The edge portion of the outer periphery of the non-magnetic alloy disk 1' is processed into a circular arc shape to form a circular arc portion 5, and there is no bulge unlike the surface of the non-magnetic alloy disk 1 of a conventional magnetic disk.
第２図は第１図に示す非磁性合金円盤１′に磁性体塗料
４をスピンコード法により塗布した後の外周部の断面図
である。スピンコード時に非磁性合金円盤１′の端部３
に磁性体塗料４が回り込むため磁性体塗料４は円弧部５
の近くに溜らず、非磁性合金円盤１′に塗布された磁性
体塗料４の表面は平坦に形成される。FIG. 2 is a sectional view of the outer periphery of the non-magnetic alloy disk 1' shown in FIG. 1 after the magnetic paint 4 is applied by the spin code method. End 3 of non-magnetic alloy disk 1' during spin code
Since the magnetic paint 4 wraps around the circular arc portion 5
The surface of the magnetic coating material 4 applied to the non-magnetic alloy disk 1' is formed flat without accumulating near the surface.
以上説明したように本発明は、基板の外周のエツジ部を
円弧状にすることにより、磁性体塗料が外周部で盛り上
るのを防止し、磁性体塗料の表面を平坦にできる効果が
ある。As described above, the present invention has the effect of making the edge portion of the outer periphery of the substrate arc-shaped, thereby preventing the magnetic paint from rising on the outer periphery and making the surface of the magnetic paint flat.
第１図および第２図はそれぞれ本発明の一実施例の非磁
性合金円盤１′の外周部の断面図および非磁性合金円盤
１′に磁性体塗料４を塗布した状態の外周部の断面図、
第３図および第４図は従来の磁気ディスクの非磁性合金
円盤１の外周部の断面図および非磁性合金円盤１に磁性
塗料４を塗布した状態の外周部の断面図である。
１．１′・・・非磁性合金円盤、２・・・面取部、３・
・・端部、４・・・磁性体塗料、５・・・円弧部。1 and 2 are a sectional view of the outer periphery of a non-magnetic alloy disk 1' according to an embodiment of the present invention, and a sectional view of the outer periphery of the non-magnetic alloy disk 1' coated with magnetic paint 4, respectively. ,
3 and 4 are cross-sectional views of the outer periphery of a non-magnetic alloy disc 1 of a conventional magnetic disk, and a sectional view of the outer periphery of the non-magnetic alloy disc 1 coated with magnetic paint 4. 1.1'...Nonmagnetic alloy disk, 2...Chamfered portion, 3.
... End portion, 4... Magnetic paint, 5... Arc portion.
Claims (1)
クにおいて、前記基板の外周のエッジ部が円弧状に加工
されたことを特徴とする磁気ディスク円盤。1. A magnetic disk disk comprising a donut-shaped substrate coated with magnetic paint, characterized in that an edge portion of the outer periphery of the substrate is processed into an arc shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16114786A JPS6316419A (en) | 1986-07-08 | 1986-07-08 | Magnetic disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16114786A JPS6316419A (en) | 1986-07-08 | 1986-07-08 | Magnetic disk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6316419A true JPS6316419A (en) | 1988-01-23 |
Family
ID=15729485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16114786A Pending JPS6316419A (en) | 1986-07-08 | 1986-07-08 | Magnetic disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6316419A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6541888B2 (en) | 2000-01-21 | 2003-04-01 | Mannesmann Sachs Ag | Winding body for receiving a winding for an electromagnetomechanical converter and electromagnetomechanical converter |
-
1986
- 1986-07-08 JP JP16114786A patent/JPS6316419A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6541888B2 (en) | 2000-01-21 | 2003-04-01 | Mannesmann Sachs Ag | Winding body for receiving a winding for an electromagnetomechanical converter and electromagnetomechanical converter |
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