JPS6449119A - Magnetic recording medium - Google Patents

Magnetic recording medium

Info

Publication number
JPS6449119A
JPS6449119A JP20498987A JP20498987A JPS6449119A JP S6449119 A JPS6449119 A JP S6449119A JP 20498987 A JP20498987 A JP 20498987A JP 20498987 A JP20498987 A JP 20498987A JP S6449119 A JPS6449119 A JP S6449119A
Authority
JP
Japan
Prior art keywords
solvent
polishing agent
silane coupling
agent
polishing
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
JP20498987A
Other languages
Japanese (ja)
Other versions
JP2734508B2 (en
Inventor
Masakazu Muroyama
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP62204989A priority Critical patent/JP2734508B2/en
Publication of JPS6449119A publication Critical patent/JPS6449119A/en
Application granted granted Critical
Publication of JP2734508B2 publication Critical patent/JP2734508B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE:To prevent durability from being impaired by a surface treatment and to maintain good polishability by dispersing a polishing agent subjected to a prescribed treatment into a magnetic coated film. CONSTITUTION:The polishing agent subjected to the surface treatment by using a silane coupling agent which is dehydrated by using an org. solvent having no compatibility with water is dispersed into the magnetic coated film. The org. solvent is adequately o-xylene, toluene, chlorobenzen, etc. Any known materials are usable as the silane coupling agent. Alumina, chromium oxide, silicon carbide, corundum, etc., are used as the polishing agent. The polishing agents which have >=5 Mohs hardness and 0.05-5mum average grain size are used. The surface treatment is executed by dispersing the polishing agent into the org. solvent, circulating the soln. for a specified period, adding the silane coupling agent to the soln. and circulating the soln. further, then cleaning and drying the polishing agent with a solvent such as hexane. The amt. of the silane coupling agent is about 5wt.% of the polishing agent.
JP62204989A 1987-08-20 1987-08-20 Magnetic recording media Expired - Lifetime JP2734508B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62204989A JP2734508B2 (en) 1987-08-20 1987-08-20 Magnetic recording media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62204989A JP2734508B2 (en) 1987-08-20 1987-08-20 Magnetic recording media

Publications (2)

Publication Number Publication Date
JPS6449119A true JPS6449119A (en) 1989-02-23
JP2734508B2 JP2734508B2 (en) 1998-03-30

Family

ID=16499632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62204989A Expired - Lifetime JP2734508B2 (en) 1987-08-20 1987-08-20 Magnetic recording media

Country Status (1)

Country Link
JP (1) JP2734508B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449519A (en) * 1990-06-19 1992-02-18 Matsushita Electric Ind Co Ltd Magnetic recording medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177136A (en) * 1984-09-25 1986-04-19 Toshiba Corp Magnetic recording medium
JPS62131264A (en) * 1985-12-03 1987-06-13 Nec Corp Apparatus for treating silane coupling agent

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6177136A (en) * 1984-09-25 1986-04-19 Toshiba Corp Magnetic recording medium
JPS62131264A (en) * 1985-12-03 1987-06-13 Nec Corp Apparatus for treating silane coupling agent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0449519A (en) * 1990-06-19 1992-02-18 Matsushita Electric Ind Co Ltd Magnetic recording medium

Also Published As

Publication number Publication date
JP2734508B2 (en) 1998-03-30

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