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
Application number
JP56139030A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5841421A (ja
Inventor
Tsunemi Ooiwa
Atsutaka Yamaguchi
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.)
Maxell Ltd
Original Assignee
Hitachi Maxell 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 Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP56139030A priority Critical patent/JPS5841421A/ja
Publication of JPS5841421A publication Critical patent/JPS5841421A/ja
Publication of JPH0312368B2 publication Critical patent/JPH0312368B2/ja
Granted legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62Record carriers characterised by the selection of the material
    • G11B5/73Base 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
    • G11B5/735Base 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
    • G11B5/7356Base 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)
JP56139030A 1981-09-03 1981-09-03 磁気記録媒体 Granted JPS5841421A (ja)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
JPS5841421A (ja) 1983-03-10

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