JPH0312368B2 - - Google Patents
Info
- Publication number
- JPH0312368B2 JPH0312368B2 JP56139030A JP13903081A JPH0312368B2 JP H0312368 B2 JPH0312368 B2 JP H0312368B2 JP 56139030 A JP56139030 A JP 56139030A JP 13903081 A JP13903081 A JP 13903081A JP H0312368 B2 JPH0312368 B2 JP H0312368B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon black
- film
- weight
- fluorine
- parts
- 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.)
- Expired - Lifetime
Links
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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/735—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer
- G11B5/7356—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer characterised by the back layer comprising non-magnetic particles in the back layer, e.g. particles of TiO2, ZnO or SiO2
Landscapes
- Lubricants (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Magnetic Record Carriers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56139030A JPS5841421A (ja) | 1981-09-03 | 1981-09-03 | 磁気記録媒体 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56139030A JPS5841421A (ja) | 1981-09-03 | 1981-09-03 | 磁気記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5841421A JPS5841421A (ja) | 1983-03-10 |
JPH0312368B2 true JPH0312368B2 (enrdf_load_html_response) | 1991-02-20 |
Family
ID=15235821
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56139030A Granted JPS5841421A (ja) | 1981-09-03 | 1981-09-03 | 磁気記録媒体 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5841421A (enrdf_load_html_response) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60109020A (ja) * | 1983-11-17 | 1985-06-14 | Tdk Corp | 磁気記録媒体およびその製造方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5729769B2 (enrdf_load_html_response) * | 1974-02-15 | 1982-06-24 | ||
JPS6048047B2 (ja) * | 1976-11-02 | 1985-10-25 | ソニー株式会社 | 磁気記録媒体 |
-
1981
- 1981-09-03 JP JP56139030A patent/JPS5841421A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5841421A (ja) | 1983-03-10 |
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