JPS5481805A - Production of magnetic disc - Google Patents

Production of magnetic disc

Info

Publication number
JPS5481805A
JPS5481805A JP14954677A JP14954677A JPS5481805A JP S5481805 A JPS5481805 A JP S5481805A JP 14954677 A JP14954677 A JP 14954677A JP 14954677 A JP14954677 A JP 14954677A JP S5481805 A JPS5481805 A JP S5481805A
Authority
JP
Japan
Prior art keywords
coating film
magnetic
disc
coating
oxide
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
JP14954677A
Other languages
Japanese (ja)
Other versions
JPS6016007B2 (en
Inventor
Kazuo Ogasa
Satoru Asanome
Mitsuru Hamada
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14954677A priority Critical patent/JPS6016007B2/en
Publication of JPS5481805A publication Critical patent/JPS5481805A/en
Publication of JPS6016007B2 publication Critical patent/JPS6016007B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)

Abstract

PURPOSE: To achieve the increase in the strength of the disc without causing the breadown of magnetic heads by baking and hardening the coating film formed of magnetic oxide and thermosetting resin in an inert gas.
CONSTITUTION: A thermosetting resin of acrylic or epoxy base is put togenther with a magnetic oxide such as gamm-iron oxide or the like in a coating and the mixture is thinly and evenly coated on a substrate such as of aluminum disc by spin coating or the like, whereby the coating film of the magnetic layer is formed. Thereafter, the coating film is subjected to orientation treatment or the like, and further this coating film is put together with the substrate in a high temperature furnace and is heated while an inert gas such as nitrogen gas or the like is being supplied whereby it is baked, heat treated and hardened. This increases the strength of the coating film of the magnetic disc. Since additives such as hard alumina, silica or the like are not contained, the breakdown of magnetic heads may be prevented.
COPYRIGHT: (C)1979,JPO&Japio
JP14954677A 1977-12-13 1977-12-13 Manufacturing method of magnetic disk Expired JPS6016007B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14954677A JPS6016007B2 (en) 1977-12-13 1977-12-13 Manufacturing method of magnetic disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14954677A JPS6016007B2 (en) 1977-12-13 1977-12-13 Manufacturing method of magnetic disk

Publications (2)

Publication Number Publication Date
JPS5481805A true JPS5481805A (en) 1979-06-29
JPS6016007B2 JPS6016007B2 (en) 1985-04-23

Family

ID=15477505

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14954677A Expired JPS6016007B2 (en) 1977-12-13 1977-12-13 Manufacturing method of magnetic disk

Country Status (1)

Country Link
JP (1) JPS6016007B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5737804A (en) * 1980-08-18 1982-03-02 Nec Corp Medium for magnetic disk and manufacture thereof
JPS5933627A (en) * 1982-08-16 1984-02-23 Hitachi Maxell Ltd Manufacture of magnetic disc

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5737804A (en) * 1980-08-18 1982-03-02 Nec Corp Medium for magnetic disk and manufacture thereof
JPS5933627A (en) * 1982-08-16 1984-02-23 Hitachi Maxell Ltd Manufacture of magnetic disc

Also Published As

Publication number Publication date
JPS6016007B2 (en) 1985-04-23

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