patents.google.com

JPS57127923A - Magnetic recording medium - Google Patents

  • ️Mon Aug 09 1982

JPS57127923A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS57127923A
JPS57127923A JP56012415A JP1241581A JPS57127923A JP S57127923 A JPS57127923 A JP S57127923A JP 56012415 A JP56012415 A JP 56012415A JP 1241581 A JP1241581 A JP 1241581A JP S57127923 A JPS57127923 A JP S57127923A Authority
JP
Japan
Prior art keywords
film
oligomer
polyester
thin film
recording medium
Prior art date
1981-01-29
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
JP56012415A
Other languages
Japanese (ja)
Inventor
Takashi Suzuki
Koichi Shinohara
Takashi Fujita
Masaru Odagiri
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.)
1981-01-29
Filing date
1981-01-29
Publication date
1982-08-09
1981-01-29 Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
1981-01-29 Priority to JP56012415A priority Critical patent/JPS57127923A/en
1982-08-09 Publication of JPS57127923A publication Critical patent/JPS57127923A/en
Status Pending legal-status Critical Current

Links

  • 230000005291 magnetic effect Effects 0.000 title abstract 3
  • 239000010408 film Substances 0.000 abstract 4
  • 239000010409 thin film Substances 0.000 abstract 3
  • 239000013078 crystal Substances 0.000 abstract 2
  • 230000005294 ferromagnetic effect Effects 0.000 abstract 2
  • 238000010438 heat treatment Methods 0.000 abstract 2
  • 229920000728 polyester Polymers 0.000 abstract 2
  • 229920006267 polyester film Polymers 0.000 abstract 2
  • 239000000126 substance Substances 0.000 abstract 2
  • 238000000151 deposition Methods 0.000 abstract 1
  • 230000000977 initiatory effect Effects 0.000 abstract 1

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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent

Landscapes

  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE:To achieve a metallic thin film type magnetic recording medium with excellent magnetic head touch and running performance and without squeaking under high humidity, by taking a polyester film with greater oligomer depositing frequency as a base film. CONSTITUTION:When polyester oligomer is deposited on the surface of a film through heat treatment in advance or ferromagnetic substance thin film is formed on the film under vacuum, the oligomer is deposited by heating the film surface strongly at the initiation of forming. Thus, >=400 crystals/mm.<2> of polyester oligomer fine crystals are projected on the surface for the polyester film and a metallic ferromagnetic thin film is provided directly or via nonmagnetic substance layer on it.

JP56012415A 1981-01-29 1981-01-29 Magnetic recording medium Pending JPS57127923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56012415A JPS57127923A (en) 1981-01-29 1981-01-29 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56012415A JPS57127923A (en) 1981-01-29 1981-01-29 Magnetic recording medium

Publications (1)

Publication Number Publication Date
JPS57127923A true JPS57127923A (en) 1982-08-09

Family

ID=11804627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56012415A Pending JPS57127923A (en) 1981-01-29 1981-01-29 Magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS57127923A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965928A (en) * 1982-10-06 1984-04-14 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS61222025A (en) * 1985-03-28 1986-10-02 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS61239424A (en) * 1985-04-16 1986-10-24 Matsushita Electric Ind Co Ltd Magnetic disk

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53107314A (en) * 1977-03-01 1978-09-19 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS53109607A (en) * 1977-03-04 1978-09-25 Matsushita Electric Ind Co Ltd Production of magnetic recording medium
JPS54143112A (en) * 1978-04-27 1979-11-08 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5613516A (en) * 1979-07-16 1981-02-09 Tdk Corp Magnetic recording medium
JPS5616937A (en) * 1979-07-17 1981-02-18 Matsushita Electric Ind Co Ltd Magnetic recording medium

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53107314A (en) * 1977-03-01 1978-09-19 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS53109607A (en) * 1977-03-04 1978-09-25 Matsushita Electric Ind Co Ltd Production of magnetic recording medium
JPS54143112A (en) * 1978-04-27 1979-11-08 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS5613516A (en) * 1979-07-16 1981-02-09 Tdk Corp Magnetic recording medium
JPS5616937A (en) * 1979-07-17 1981-02-18 Matsushita Electric Ind Co Ltd Magnetic recording medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5965928A (en) * 1982-10-06 1984-04-14 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPH0357532B2 (en) * 1982-10-06 1991-09-02 Matsushita Electric Ind Co Ltd
JPS61222025A (en) * 1985-03-28 1986-10-02 Matsushita Electric Ind Co Ltd Magnetic recording medium
JPS61239424A (en) * 1985-04-16 1986-10-24 Matsushita Electric Ind Co Ltd Magnetic disk

Similar Documents

Publication Publication Date Title
JPS5798133A (en) 1982-06-18 Magnetic recording medium
JPS57127923A (en) 1982-08-09 Magnetic recording medium
JPS57179925A (en) 1982-11-05 Magnetic head
JPS5755531A (en) 1982-04-02 Vertical magnetic recording medium
JPS5419200A (en) 1979-02-13 Magnetic recording medium process
JPS5737718A (en) 1982-03-02 Magnetic recording medium
JPS5389706A (en) 1978-08-07 Magnetic recording medium and its manufacture
JPS57198535A (en) 1982-12-06 Magnetic recording medium
JPS5260111A (en) 1977-05-18 Magnetic head
JPS5736435A (en) 1982-02-27 Vertical magnetizing medium
JPS6435714A (en) 1989-02-06 Magnetic head
JPS52149105A (en) 1977-12-12 Preparation of magnetic disc with high recording density
JPS5792434A (en) 1982-06-09 Manufacture of magnetic recording medium
JPS52113216A (en) 1977-09-22 Magnetic head
JPS54143116A (en) 1979-11-08 Magnetic recording medium
JPS52141609A (en) 1977-11-26 Magnetic recording medium and its production
JPS5680831A (en) 1981-07-02 Producing device for magnetic recording medium
JPS57198534A (en) 1982-12-06 Magnetic recording medium
JPS57169925A (en) 1982-10-19 Magnetic recording medium
JPS52148101A (en) 1977-12-09 Preparation of magnetic recording media
JPS5720921A (en) 1982-02-03 Vertically magnetized recording medium
JPS5265409A (en) 1977-05-30 Preparation for magnetic recording medium
JPS55163630A (en) 1980-12-19 Magnetic recording medium
JPS6476520A (en) 1989-03-22 Magnetic recording medium and its production
JPS6482325A (en) 1989-03-28 Magnetic recording medium and its production