JPS6449119A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- 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
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.
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)
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)
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 |
-
1987
- 1987-08-20 JP JP62204989A patent/JP2734508B2/en not_active Expired - Lifetime
Patent Citations (2)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 10 Free format text: PAYMENT UNTIL: 20080109 |