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JPS5285802A - Production of magnetic recording medium - Google Patents

Production of magnetic recording medium

Info

Publication number
JPS5285802A
JPS5285802A JP206776A JP206776A JPS5285802A JP S5285802 A JPS5285802 A JP S5285802A JP 206776 A JP206776 A JP 206776A JP 206776 A JP206776 A JP 206776A JP S5285802 A JPS5285802 A JP S5285802A
Authority
JP
Japan
Prior art keywords
production
recording medium
magnetic recording
pittings
crackings
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
JP206776A
Other languages
Japanese (ja)
Inventor
Shigeki Yamamura
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP206776A priority Critical patent/JPS5285802A/en
Publication of JPS5285802A publication Critical patent/JPS5285802A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To form a protective film of thermal oxidation film free from fine crackings and minute pittings by subjecting the surface of the magnetic metal on a non magnetic base to two step heat treatment of low and high temperatures.
COPYRIGHT: (C)1977,JPO&Japio
JP206776A 1976-01-12 1976-01-12 Production of magnetic recording medium Pending JPS5285802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP206776A JPS5285802A (en) 1976-01-12 1976-01-12 Production of magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP206776A JPS5285802A (en) 1976-01-12 1976-01-12 Production of magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5285802A true JPS5285802A (en) 1977-07-16

Family

ID=11518989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP206776A Pending JPS5285802A (en) 1976-01-12 1976-01-12 Production of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5285802A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60191423A (en) * 1984-03-09 1985-09-28 Canon Inc Magnetic recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60191423A (en) * 1984-03-09 1985-09-28 Canon Inc Magnetic recording medium
JPH0532816B2 (en) * 1984-03-09 1993-05-18 Canon Kk

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