JPS57167125A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57167125A
JPS57167125A JP5077581A JP5077581A JPS57167125A JP S57167125 A JPS57167125 A JP S57167125A JP 5077581 A JP5077581 A JP 5077581A JP 5077581 A JP5077581 A JP 5077581A JP S57167125 A JPS57167125 A JP S57167125A
Authority
JP
Japan
Prior art keywords
film
magnetic
inorganic matters
recording medium
shaped
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
JP5077581A
Other languages
Japanese (ja)
Other versions
JPH0315253B2 (en
Inventor
Kunio Wakai
Tsunemi Oiwa
Osamu Kitagami
Hideaki Niimi
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 Holdings 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 JP5077581A priority Critical patent/JPS57167125A/en
Publication of JPS57167125A publication Critical patent/JPS57167125A/en
Publication of JPH0315253B2 publication Critical patent/JPH0315253B2/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

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To obtain a magnetic recording medium superior in electromagnetic characteristic and durability, by forming a resin coating film, which has recesses due to elution of needle-shaped inorganic matters, on a base and vapor-depositing a ferromagnetic metal onto this film from the oblique direction to form a magnetic film. CONSTITUTION:A resin coating film 2 which has recesses 3 due to elution of needle-shaped or flake-shaped inorganic matters is formed on a base 1, and a ferromagnetic metal or alloy is vapor-deposited in vacuum onto this film 2 from the oblique direction (for example, the direction of an angle alpha of incidence 70 deg.) to form a magnetic film 4. The magnetic film 4 has >=100Angstrom width in the recording direction and has >=3 partitions, which buffer the magnetic mutual function, within 10mu length. Iron oxide red, goethite, gamma-Fe2O3, or the like is used as said inorganic matters.
JP5077581A 1981-04-03 1981-04-03 Magnetic recording medium Granted JPS57167125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5077581A JPS57167125A (en) 1981-04-03 1981-04-03 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5077581A JPS57167125A (en) 1981-04-03 1981-04-03 Magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS57167125A true JPS57167125A (en) 1982-10-14
JPH0315253B2 JPH0315253B2 (en) 1991-02-28

Family

ID=12868200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5077581A Granted JPS57167125A (en) 1981-04-03 1981-04-03 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57167125A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60117414A (en) * 1983-11-29 1985-06-24 Matsushita Electric Ind Co Ltd Thin film type magnetic recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52103481A (en) * 1976-02-27 1977-08-30 Mitsui Petrochem Ind Ltd Drawn laminated hollow articles and production thereof
JPS53109605A (en) * 1977-03-04 1978-09-25 Matsushita Electric Ind Co Ltd Production of magnetic recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52103481A (en) * 1976-02-27 1977-08-30 Mitsui Petrochem Ind Ltd Drawn laminated hollow articles and production thereof
JPS53109605A (en) * 1977-03-04 1978-09-25 Matsushita Electric Ind Co Ltd Production of magnetic recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60117414A (en) * 1983-11-29 1985-06-24 Matsushita Electric Ind Co Ltd Thin film type magnetic recording medium
JPH0550046B2 (en) * 1983-11-29 1993-07-28 Matsushita Electric Ind Co Ltd

Also Published As

Publication number Publication date
JPH0315253B2 (en) 1991-02-28

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