JPS5841421A - 磁気記録媒体 - Google Patents

磁気記録媒体

Info

Publication number
JPS5841421A
JPS5841421A JP56139030A JP13903081A JPS5841421A JP S5841421 A JPS5841421 A JP S5841421A JP 56139030 A JP56139030 A JP 56139030A JP 13903081 A JP13903081 A JP 13903081A JP S5841421 A JPS5841421 A JP S5841421A
Authority
JP
Japan
Prior art keywords
carbon black
fluorine
surfactant
film
substrate
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
JP56139030A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0312368B2 (enrdf_load_html_response
Inventor
Tsunemi Oiwa
大岩　恒美
Atsutaka Yamaguchi
山口　温敬
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

    • 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)
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 true JPS5841421A (ja) 1983-03-10
JPH0312368B2 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)

Cited By (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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50114205A (enrdf_load_html_response) * 1974-02-15 1975-09-08
JPS5357004A (en) * 1976-11-02 1978-05-24 Sony Corp Magnetic recording mediun

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50114205A (enrdf_load_html_response) * 1974-02-15 1975-09-08
JPS5357004A (en) * 1976-11-02 1978-05-24 Sony Corp Magnetic recording mediun

Cited By (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

Also Published As

Publication number Publication date
JPH0312368B2 (enrdf_load_html_response) 1991-02-20

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