JPS5724068A - Photomagnetic disk device - Google Patents
Photomagnetic disk deviceInfo
- Publication number
- JPS5724068A JPS5724068A JP9837980A JP9837980A JPS5724068A JP S5724068 A JPS5724068 A JP S5724068A JP 9837980 A JP9837980 A JP 9837980A JP 9837980 A JP9837980 A JP 9837980A JP S5724068 A JPS5724068 A JP S5724068A
- Authority
- JP
- Japan
- Prior art keywords
- substrate
- photomagnetic disk
- diameter
- disk device
- photomagnetic
- 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
Abstract
PURPOSE: To realize an automatic detection for both surfaces of a photomagnetic disk of both-surface reflection type in a simple constitution, by setting the diameter of a substrate larger than the other substrate of both surfaces of the photomagnetic disk and then detecting the diameter.
CONSTITUTION: A back substrate 7' has a larger diameter than a surface substrate 7 for a both-surface reflection type photomagnetic disk containing magnetic thin films 1 and 1' which are opposed to each other. A switch 13 of a turntable 10 is provided at the position where it is actuated by the substrate 7' and not by the substrate 7 respectively. In such a way, the surface or back surface of a photomagnetic disk can be automatically detected in a simple constitution.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9837980A JPS5724068A (en) | 1980-07-17 | 1980-07-17 | Photomagnetic disk device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9837980A JPS5724068A (en) | 1980-07-17 | 1980-07-17 | Photomagnetic disk device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5724068A true JPS5724068A (en) | 1982-02-08 |
Family
ID=14218234
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9837980A Pending JPS5724068A (en) | 1980-07-17 | 1980-07-17 | Photomagnetic disk device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5724068A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61217565A (en) * | 1985-03-25 | 1986-09-27 | Nippon Steel Corp | Manufacture of steel sheet coated with pb-sn alloy by continuous hot dipping |
JPH0778373A (en) * | 1992-12-31 | 1995-03-20 | Internatl Business Mach Corp <Ibm> | Double-sided magneto-optic disk and direct overriding method and device of double-sided magneto-optic disk |
-
1980
- 1980-07-17 JP JP9837980A patent/JPS5724068A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61217565A (en) * | 1985-03-25 | 1986-09-27 | Nippon Steel Corp | Manufacture of steel sheet coated with pb-sn alloy by continuous hot dipping |
JPH0778373A (en) * | 1992-12-31 | 1995-03-20 | Internatl Business Mach Corp <Ibm> | Double-sided magneto-optic disk and direct overriding method and device of double-sided magneto-optic disk |
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