JPS5394910A - Magnetic recording disc - Google Patents

Magnetic recording disc

Info

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
Application number
JP16025576A
Other languages
Japanese (ja)
Inventor
Nagaaki Etsuno
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP16025576A priority Critical patent/JPS5394910A/en
Publication of JPS5394910A publication Critical patent/JPS5394910A/en
Pending legal-status Critical Current

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
JP16025576A 1976-12-29 1976-12-29 Magnetic recording disc Pending JPS5394910A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (5)

* Cited by examiner, † Cited by third party
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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