JPH0312366B2 - - Google Patents

Info

Publication number
JPH0312366B2
JPH0312366B2 JP56139027A JP13902781A JPH0312366B2 JP H0312366 B2 JPH0312366 B2 JP H0312366B2 JP 56139027 A JP56139027 A JP 56139027A JP 13902781 A JP13902781 A JP 13902781A JP H0312366 B2 JPH0312366 B2 JP H0312366B2
Authority
JP
Japan
Prior art keywords
carbon black
film
weight
parts
magnetic
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
JP56139027A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5841418A (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 JP56139027A priority Critical patent/JPS5841418A/ja
Publication of JPS5841418A publication Critical patent/JPS5841418A/ja
Publication of JPH0312366B2 publication Critical patent/JPH0312366B2/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

  • Magnetic Record Carriers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
JP56139027A 1981-09-03 1981-09-03 磁気記録媒体 Granted JPS5841418A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56139027A JPS5841418A (ja) 1981-09-03 1981-09-03 磁気記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56139027A JPS5841418A (ja) 1981-09-03 1981-09-03 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS5841418A JPS5841418A (ja) 1983-03-10
JPH0312366B2 true JPH0312366B2 (enrdf_load_html_response) 1991-02-20

Family

ID=15235749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56139027A Granted JPS5841418A (ja) 1981-09-03 1981-09-03 磁気記録媒体

Country Status (1)

Country Link
JP (1) JPS5841418A (enrdf_load_html_response)

Family Cites Families (1)

* 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

Also Published As

Publication number Publication date
JPS5841418A (ja) 1983-03-10

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