JPS5758246A - Manufacture of vertical magnetic recording medium - Google Patents

Manufacture of vertical magnetic recording medium

Info

Publication number
JPS5758246A
JPS5758246A JP13213880A JP13213880A JPS5758246A JP S5758246 A JPS5758246 A JP S5758246A JP 13213880 A JP13213880 A JP 13213880A JP 13213880 A JP13213880 A JP 13213880A JP S5758246 A JPS5758246 A JP S5758246A
Authority
JP
Japan
Prior art keywords
magnetic
recording medium
particle diameter
manufacture
magnetic recording
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
JP13213880A
Other languages
Japanese (ja)
Inventor
Toshihiko Oguchi
Koki Yokoyama
Hirohisa Kato
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13213880A priority Critical patent/JPS5758246A/en
Publication of JPS5758246A publication Critical patent/JPS5758246A/en
Pending 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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/842—Coating a support with a liquid magnetic dispersion
    • G11B5/845—Coating a support with a liquid magnetic dispersion in a magnetic field

Abstract

PURPOSE:To manufacture a vertical magnetic recording medium having a high orientation rate, while using magnetic particles of small particle diameter, by vertically magnetizing a nonmagnetic substrate on which a magnetic paint containing magnetic particles having specific particle diameter has been applied, with a specific DC magnetic field. CONSTITUTION:A nonmagnetic substrate on which a magnetic painting material containing magnetic particles having small particle diameter (<=0.2mum particle diameter) has been applied is made to pass through in a DC magnetic field having >=4,000Oe intensity, an easily magnetizing axis of the magnetic particles is oriented in the direction of said magnetic field, and subsequently, the magnetic paint is dried and solidified, by which a vertical magnetic recording medium is obtained.
JP13213880A 1980-09-22 1980-09-22 Manufacture of vertical magnetic recording medium Pending JPS5758246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13213880A JPS5758246A (en) 1980-09-22 1980-09-22 Manufacture of vertical magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13213880A JPS5758246A (en) 1980-09-22 1980-09-22 Manufacture of vertical magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS5758246A true JPS5758246A (en) 1982-04-07

Family

ID=15074246

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13213880A Pending JPS5758246A (en) 1980-09-22 1980-09-22 Manufacture of vertical magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5758246A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094452A2 (en) * 1982-05-19 1983-11-23 International Business Machines Corporation Production of magnetic recording medium with vertically oriented acicular particles
JPS6074121A (en) * 1983-09-29 1985-04-26 Toshiba Corp Manufacturing device of high density magnetic recording medium
JPS60138733A (en) * 1983-12-27 1985-07-23 Toshiba Corp Production of magnetic recording medium

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0094452A2 (en) * 1982-05-19 1983-11-23 International Business Machines Corporation Production of magnetic recording medium with vertically oriented acicular particles
JPS6074121A (en) * 1983-09-29 1985-04-26 Toshiba Corp Manufacturing device of high density magnetic recording medium
JPS60138733A (en) * 1983-12-27 1985-07-23 Toshiba Corp Production of magnetic recording medium

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