JPS6285924U - - Google Patents
Info
- Publication number
- JPS6285924U JPS6285924U JP17812585U JP17812585U JPS6285924U JP S6285924 U JPS6285924 U JP S6285924U JP 17812585 U JP17812585 U JP 17812585U JP 17812585 U JP17812585 U JP 17812585U JP S6285924 U JPS6285924 U JP S6285924U
- Authority
- JP
- Japan
- Prior art keywords
- thermal expansion
- base
- annular
- magnetic disk
- peripheral part
- 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
- 230000002093 peripheral effect Effects 0.000 claims 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
Landscapes
- Magnetic Record Carriers (AREA)
Description
第１図は本考案に係る磁気デイスクを記録・読
取装置に装着した状態を示す断面図、第２図は上
記磁気デイスクの断面図、第３図は上記磁気デイ
スクの構成部品の斜視図、第４図は従来の磁気デ
イスクを示す断面図である。
２…デイスクドライブ機構、３ａ，３ｂ…ヘツ
ド、１０…磁気デイスク、１１，１２…フレキシ
ブル磁気シート、１３…基盤、１４…外周側基体
、１５…内周側基体、１６…間隙。
FIG. 1 is a sectional view showing the magnetic disk according to the present invention installed in a recording/reading device, FIG. 2 is a sectional view of the magnetic disk, FIG. 3 is a perspective view of the components of the magnetic disk, and FIG. FIG. 4 is a sectional view showing a conventional magnetic disk. 2... Disk drive mechanism, 3a, 3b... Head, 10... Magnetic disk, 11, 12... Flexible magnetic sheet, 13... Base, 14... Outer circumference side base, 15... Inner circumference side base, 16... Gap.
Claims (1)
くとも一方の面における外周部と内周部との間に
環状の凹部を形成し、環状のフレキシブル磁気シ
ートを上記外周部と内周部において接着して、該
シートを上記一方の面に貼付してなる磁気デイス
クにおいて、 基盤が半径方向に異なる２種以上の環状基体を
一体化したものから構成され、外周側の環状基体
の熱膨脹率が内周側の環状基体の熱膨脹率より大
きいことを特徴とする磁気デイスク。 (2) 上記内周側の環状基体の熱膨脹率がアルミ
ニウムの熱膨脹率とほぼ等しいことを特徴とする
実用新案登録請求の範囲第１項記載の磁気デイス
ク。 (3) 上記環状基体が、上記基盤の外周部と内周
部との半径方向寸法の熱膨脹による変化量が該基
盤に貼付された上記フレキシブル磁気シートの外
周部から内周部に至る半径方向寸法の熱膨脹によ
る変化量より大きいもしくは両変化量が等しくな
るような材料からなることを特徴とする実用新案
登録請求の範囲第１項もしくは第２項記載の磁気
デイスク。[Claims for Utility Model Registration] (1) An annular flexible magnetic sheet formed by forming an annular recess between an outer peripheral part and an inner peripheral part on at least one surface of a disc-shaped base having an inner hole of a predetermined diameter. in a magnetic disk formed by adhering the above-mentioned outer peripheral part and the inner peripheral part, and pasting the sheet on one of the above-mentioned surfaces, wherein the base is composed of an integral body of two or more types of annular base bodies different in the radial direction, A magnetic disk characterized in that the coefficient of thermal expansion of the annular base on the outer circumferential side is larger than the coefficient of thermal expansion of the annular base on the inner circumferential side. (2) The magnetic disk according to claim 1, wherein the coefficient of thermal expansion of the annular substrate on the inner peripheral side is approximately equal to that of aluminum. (3) The annular base body is arranged such that the amount of change due to thermal expansion in the radial dimension between the outer circumference and inner circumference of the base is the radial dimension from the outer circumference to the inner circumference of the flexible magnetic sheet attached to the base. 2. The magnetic disk according to claim 1 or 2, wherein the magnetic disk is made of a material whose amount of change due to thermal expansion is greater than or equal to the amount of change caused by thermal expansion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17812585U JPH0441459Y2 (en) | 1985-11-19 | 1985-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17812585U JPH0441459Y2 (en) | 1985-11-19 | 1985-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6285924U true JPS6285924U (en) | 1987-06-01 |
| JPH0441459Y2 JPH0441459Y2 (en) | 1992-09-29 |
Family
ID=31119970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17812585U Expired JPH0441459Y2 (en) | 1985-11-19 | 1985-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0441459Y2 (en) |
-
1985
- 1985-11-19 JP JP17812585U patent/JPH0441459Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0441459Y2 (en) | 1992-09-29 |