JPH0413767B2 - - Google Patents

Info

Publication number
JPH0413767B2
JPH0413767B2 JP56023831A JP2383181A JPH0413767B2 JP H0413767 B2 JPH0413767 B2 JP H0413767B2 JP 56023831 A JP56023831 A JP 56023831A JP 2383181 A JP2383181 A JP 2383181A JP H0413767 B2 JPH0413767 B2 JP H0413767B2
Authority
JP
Japan
Prior art keywords
protective layer
magnetic
molecular weight
low molecular
polyurethane prepolymer
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
JP56023831A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57138052A (en
Inventor
Nobuaki Ogoshi
Kazuto Karashima
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.)
Maxell Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP56023831A priority Critical patent/JPS57138052A/ja
Publication of JPS57138052A publication Critical patent/JPS57138052A/ja
Publication of JPH0413767B2 publication Critical patent/JPH0413767B2/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
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/72—Protective coatings, e.g. anti-static or antifriction

Landscapes

  • Paints Or Removers (AREA)
  • Magnetic Record Carriers (AREA)
JP56023831A 1981-02-19 1981-02-19 Magnetic recording medium Granted JPS57138052A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56023831A JPS57138052A (en) 1981-02-19 1981-02-19 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56023831A JPS57138052A (en) 1981-02-19 1981-02-19 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57138052A JPS57138052A (en) 1982-08-26
JPH0413767B2 true JPH0413767B2 (enrdf_load_stackoverflow) 1992-03-10

Family

ID=12121321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56023831A Granted JPS57138052A (en) 1981-02-19 1981-02-19 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57138052A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922226A (ja) * 1982-07-29 1984-02-04 Sony Corp 磁気記録媒体
JP2020107374A (ja) * 2018-12-26 2020-07-09 共同印刷株式会社 磁気記録媒体

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5151306A (ja) * 1974-10-31 1976-05-06 Fuji Photo Film Co Ltd Jikikirokubaitai
IL49508A0 (en) * 1975-12-08 1976-06-30 Ball Brothers Res Corp Method and composition for lubricating and lubricated substrates

Also Published As

Publication number Publication date
JPS57138052A (en) 1982-08-26

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