JPH0363134B2 - - Google Patents

Info

Publication number
JPH0363134B2
JPH0363134B2 JP58011777A JP1177783A JPH0363134B2 JP H0363134 B2 JPH0363134 B2 JP H0363134B2 JP 58011777 A JP58011777 A JP 58011777A JP 1177783 A JP1177783 A JP 1177783A JP H0363134 B2 JPH0363134 B2 JP H0363134B2
Authority
JP
Japan
Prior art keywords
magnetic recording
recording medium
magnetic
opening
layer
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.)
Expired - Lifetime
Application number
JP58011777A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59139136A (ja
Inventor
Hiroyasu Karimoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1177783A priority Critical patent/JPS59139136A/ja
Publication of JPS59139136A publication Critical patent/JPS59139136A/ja
Publication of JPH0363134B2 publication Critical patent/JPH0363134B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
    • G11B5/82—Disk carriers
JP1177783A 1983-01-27 1983-01-27 磁気記録媒体 Granted JPS59139136A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1177783A JPS59139136A (ja) 1983-01-27 1983-01-27 磁気記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1177783A JPS59139136A (ja) 1983-01-27 1983-01-27 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS59139136A JPS59139136A (ja) 1984-08-09
JPH0363134B2 true JPH0363134B2 (ru) 1991-09-30

Family

ID=11787381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1177783A Granted JPS59139136A (ja) 1983-01-27 1983-01-27 磁気記録媒体

Country Status (1)

Country Link
JP (1) JPS59139136A (ru)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60179973A (ja) * 1984-02-27 1985-09-13 Anelva Corp 垂直磁気記録フロツピ−デイスク
US5226033A (en) * 1990-03-27 1993-07-06 Sony Corporation Magneto-optical disk hub in which the inner peripheral edge portion of the spindle opening is strengthened and made abrasion resistant
JP2539571Y2 (ja) * 1990-03-30 1997-06-25 株式会社東芝 磁気記録媒体

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54147008A (en) * 1978-05-10 1979-11-16 Matsushita Electric Ind Co Ltd Magnetic recording medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54147008A (en) * 1978-05-10 1979-11-16 Matsushita Electric Ind Co Ltd Magnetic recording medium

Also Published As

Publication number Publication date
JPS59139136A (ja) 1984-08-09

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