JPH0249490B2 - - Google Patents

Info

Publication number
JPH0249490B2
JPH0249490B2 JP57124155A JP12415582A JPH0249490B2 JP H0249490 B2 JPH0249490 B2 JP H0249490B2 JP 57124155 A JP57124155 A JP 57124155A JP 12415582 A JP12415582 A JP 12415582A JP H0249490 B2 JPH0249490 B2 JP H0249490B2
Authority
JP
Japan
Prior art keywords
parts
particle size
weight
carbon black
back coat
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
JP57124155A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5914127A (ja
Inventor
Takeshi Matsura
Akira Morioka
Yoshuki Takahira
Seiji Wataya
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 JP57124155A priority Critical patent/JPS5914127A/ja
Publication of JPS5914127A publication Critical patent/JPS5914127A/ja
Publication of JPH0249490B2 publication Critical patent/JPH0249490B2/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)
  • Paints Or Removers (AREA)
JP57124155A 1982-07-15 1982-07-15 磁気記録媒体 Granted JPS5914127A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57124155A JPS5914127A (ja) 1982-07-15 1982-07-15 磁気記録媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57124155A JPS5914127A (ja) 1982-07-15 1982-07-15 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS5914127A JPS5914127A (ja) 1984-01-25
JPH0249490B2 true JPH0249490B2 (enrdf_load_html_response) 1990-10-30

Family

ID=14878298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57124155A Granted JPS5914127A (ja) 1982-07-15 1982-07-15 磁気記録媒体

Country Status (1)

Country Link
JP (1) JPS5914127A (enrdf_load_html_response)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5956223A (ja) * 1982-09-27 1984-03-31 Fuji Photo Film Co Ltd 磁気記録媒体
JPS59223937A (ja) * 1983-06-03 1984-12-15 Fuji Photo Film Co Ltd 磁気記録媒体
JPS6038725A (ja) * 1983-08-09 1985-02-28 Fuji Photo Film Co Ltd 磁気記録媒体
JPS60107729A (ja) * 1983-11-16 1985-06-13 Fuji Photo Film Co Ltd 磁気記録媒体
JPS61153822A (ja) * 1984-12-27 1986-07-12 Tdk Corp 磁気記録媒体
JPH0226602Y2 (enrdf_load_html_response) * 1984-12-28 1990-07-19
JPS63144417A (ja) * 1986-12-08 1988-06-16 Matsushita Electric Ind Co Ltd 磁気記録媒体
JP3405812B2 (ja) * 1993-05-14 2003-05-12 ティーディーケイ株式会社 磁気記録媒体

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320203B2 (enrdf_load_html_response) * 1974-05-15 1978-06-26
JPS53134406A (en) * 1977-04-28 1978-11-24 Hitachi Maxell Magnetic recording medium
JPS5347806A (en) * 1977-06-29 1978-04-28 Hitachi Maxell Magnetic recording material

Also Published As

Publication number Publication date
JPS5914127A (ja) 1984-01-25

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