JPS5394910A - Magnetic recording disc - Google Patents
Magnetic recording discInfo
- Publication number
- JPS5394910A JPS5394910A JP16025576A JP16025576A JPS5394910A JP S5394910 A JPS5394910 A JP S5394910A JP 16025576 A JP16025576 A JP 16025576A JP 16025576 A JP16025576 A JP 16025576A JP S5394910 A JPS5394910 A JP S5394910A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic recording
- recording disc
- fluorescence
- readily
- detecting
- 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 simplify construction and readily and accurately locate a head by forming layers composed of fluorescent substances of servo information on a magnetic layer in concentrical circle form and detecting the fluorescence by exciting light.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16025576A JPS5394910A (en) | 1976-12-29 | 1976-12-29 | Magnetic recording disc |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16025576A JPS5394910A (en) | 1976-12-29 | 1976-12-29 | Magnetic recording disc |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5394910A true JPS5394910A (en) | 1978-08-19 |
Family
ID=15711040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16025576A Pending JPS5394910A (en) | 1976-12-29 | 1976-12-29 | Magnetic recording disc |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5394910A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56148770A (en) * | 1980-04-17 | 1981-11-18 | Fujitsu Ltd | Self-servo magnetic disk device |
JPH0231387A (en) * | 1988-06-03 | 1990-02-01 | Insite Peripherals Inc | High track density medium having optical servo track and method and apparatus for inscribing track thereinto |
JPH03141087A (en) * | 1989-10-20 | 1991-06-17 | Insite Peripherals Inc | Addition of optical servo track information to magnetic information recording medium and magnetic medium |
JPH03292621A (en) * | 1990-04-11 | 1991-12-24 | Victor Co Of Japan Ltd | Magnetic recording disk |
-
1976
- 1976-12-29 JP JP16025576A patent/JPS5394910A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56148770A (en) * | 1980-04-17 | 1981-11-18 | Fujitsu Ltd | Self-servo magnetic disk device |
JPS6242350B2 (en) * | 1980-04-17 | 1987-09-08 | Fujitsu Ltd | |
JPH0231387A (en) * | 1988-06-03 | 1990-02-01 | Insite Peripherals Inc | High track density medium having optical servo track and method and apparatus for inscribing track thereinto |
JPH03141087A (en) * | 1989-10-20 | 1991-06-17 | Insite Peripherals Inc | Addition of optical servo track information to magnetic information recording medium and magnetic medium |
JPH03292621A (en) * | 1990-04-11 | 1991-12-24 | Victor Co Of Japan Ltd | Magnetic recording disk |
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