JPS5474403A - Coating composite for magnetic disc - Google Patents

Coating composite for magnetic disc

Info

Publication number
JPS5474403A
JPS5474403A JP14111377A JP14111377A JPS5474403A JP S5474403 A JPS5474403 A JP S5474403A JP 14111377 A JP14111377 A JP 14111377A JP 14111377 A JP14111377 A JP 14111377A JP S5474403 A JPS5474403 A JP S5474403A
Authority
JP
Japan
Prior art keywords
coating
magnetic disc
microns
proof
carbon particles
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
JP14111377A
Other languages
Japanese (ja)
Other versions
JPS5831654B2 (en
Inventor
Kazuo Ogasa
Masaomi Naito
Hikari Nagai
Shinji Otaki
Satoru Asanome
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 JP52141113A priority Critical patent/JPS5831654B2/en
Publication of JPS5474403A publication Critical patent/JPS5474403A/en
Publication of JPS5831654B2 publication Critical patent/JPS5831654B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To produce a coating film, which is strong in wear-proof or shock-proof, which is excellent in workability and in head floating property and which can prevent the head from being damaged, by blending and adding fine spherical carbon particles.
CONSTITUTION: Less than 10 wt%, preferably, 1 to 5 wt% of carbon particles having a mean diameter of less than 0.2 microns, preferably, 0.01 to 0.2 microns are mixed with magnetic powders such as γ-Fe2O3 which is contained in a coating composite of a magnetic disc. Thus, a coating having an excellent bit error property can be produced. The coating finds its proper application in a disc medium because it has a small frictional coefficient and an excellent surface workability. The surface roughness obtainable is 0.010Ra by a tape polish.
COPYRIGHT: (C)1979,JPO&Japio
JP52141113A 1977-11-26 1977-11-26 Magnetic disk coating composition Expired JPS5831654B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52141113A JPS5831654B2 (en) 1977-11-26 1977-11-26 Magnetic disk coating composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52141113A JPS5831654B2 (en) 1977-11-26 1977-11-26 Magnetic disk coating composition

Publications (2)

Publication Number Publication Date
JPS5474403A true JPS5474403A (en) 1979-06-14
JPS5831654B2 JPS5831654B2 (en) 1983-07-07

Family

ID=15284455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52141113A Expired JPS5831654B2 (en) 1977-11-26 1977-11-26 Magnetic disk coating composition

Country Status (1)

Country Link
JP (1) JPS5831654B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101849747B1 (en) * 2016-07-20 2018-05-31 주식회사 엘지화학 Novel hetero-cyclic compound and organic light emitting device comprising the same
KR101982792B1 (en) 2017-07-20 2019-05-27 주식회사 엘지화학 Novel hetero-cyclic compound and organic light emitting device comprising the same
CN112166112A (en) 2018-05-30 2021-01-01 默克专利有限公司 Composition for organic electronic device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062604A (en) * 1973-10-04 1975-05-28
JPS5114007A (en) * 1974-07-25 1976-02-04 Fuji Photo Film Co Ltd JIKISHIITO
JPS5253406A (en) * 1975-10-28 1977-04-30 Fuji Photo Film Co Ltd Magnetic sheet
JPS5297709A (en) * 1977-02-18 1977-08-16 Hitachi Maxell Magnetic recording material

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5062604A (en) * 1973-10-04 1975-05-28
JPS5114007A (en) * 1974-07-25 1976-02-04 Fuji Photo Film Co Ltd JIKISHIITO
JPS5253406A (en) * 1975-10-28 1977-04-30 Fuji Photo Film Co Ltd Magnetic sheet
JPS5297709A (en) * 1977-02-18 1977-08-16 Hitachi Maxell Magnetic recording material

Also Published As

Publication number Publication date
JPS5831654B2 (en) 1983-07-07

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