JPS56145527A - Production of magnetic recording medium - Google Patents

Production of magnetic recording medium

Info

Publication number
JPS56145527A
JPS56145527A JP4937480A JP4937480A JPS56145527A JP S56145527 A JPS56145527 A JP S56145527A JP 4937480 A JP4937480 A JP 4937480A JP 4937480 A JP4937480 A JP 4937480A JP S56145527 A JPS56145527 A JP S56145527A
Authority
JP
Japan
Prior art keywords
substrate
evaporating source
recording medium
source
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.)
Granted
Application number
JP4937480A
Other languages
Japanese (ja)
Other versions
JPS615207B2 (en
Inventor
Ryuji Sugita
Toshiaki Kunieda
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 JP4937480A priority Critical patent/JPS56145527A/en
Priority to US06/240,369 priority patent/US4399013A/en
Priority to EP81300904A priority patent/EP0035870B2/en
Priority to DE8181300904T priority patent/DE3173689D1/en
Publication of JPS56145527A publication Critical patent/JPS56145527A/en
Publication of JPS615207B2 publication Critical patent/JPS615207B2/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
    • G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
    • G11B5/851—Coating a support with a magnetic layer by sputtering

Landscapes

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

Abstract

PURPOSE:To produce a magnetic recording medium of superior short wavelength recording characteristics by using an electron beam as a evaporating source and maintaining a substrate at positive potential with respect to the evaporating source in forming a Co-Cr magnetic film on the substrate by a vacuum deposition method. CONSTITUTION:A medium substrate 2 consisting of a high-polymer material is disposed above a vacuum vessel 13, and a evaporating source 17 consisting of a water- cooled copper hearth 19 in which a thin-film material 18 is housed is disposed therein. Thence, an electron beam 21 is generated from an electron gun 20 provided near the evaporating source 17 to heat the thin film material 18, and positive potential with respect to the evaporating source 17 is impressed from a DC power source 22 to the substrate 2, so that the magnetic layer consisting essentially of Co and Cr is formed on the substrate 2. Thereby, the vertically magnetized film consisting essentially of Co and Cr is formed on the high-polymer substrate of poor heat resistance without giving any damage thereto.
JP4937480A 1980-03-07 1980-04-14 Production of magnetic recording medium Granted JPS56145527A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4937480A JPS56145527A (en) 1980-04-14 1980-04-14 Production of magnetic recording medium
US06/240,369 US4399013A (en) 1980-03-07 1981-03-04 Method of producing a magnetic recording medium
EP81300904A EP0035870B2 (en) 1980-03-07 1981-03-04 Method of producing a magnetic recording medium
DE8181300904T DE3173689D1 (en) 1980-03-07 1981-03-04 Method of producing a magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4937480A JPS56145527A (en) 1980-04-14 1980-04-14 Production of magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS56145527A true JPS56145527A (en) 1981-11-12
JPS615207B2 JPS615207B2 (en) 1986-02-17

Family

ID=12829248

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4937480A Granted JPS56145527A (en) 1980-03-07 1980-04-14 Production of magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS56145527A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59213033A (en) * 1983-05-18 1984-12-01 Ulvac Corp Manufacture of vertical magnetic recording body

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59213033A (en) * 1983-05-18 1984-12-01 Ulvac Corp Manufacture of vertical magnetic recording body
JPH0320815B2 (en) * 1983-05-18 1991-03-20 Ulvac Corp

Also Published As

Publication number Publication date
JPS615207B2 (en) 1986-02-17

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