GB2130121B - Magnetic recording medium and method for producing the same - Google Patents

Magnetic recording medium and method for producing the same

Info

Publication number
GB2130121B
GB2130121B GB08324679A GB8324679A GB2130121B GB 2130121 B GB2130121 B GB 2130121B GB 08324679 A GB08324679 A GB 08324679A GB 8324679 A GB8324679 A GB 8324679A GB 2130121 B GB2130121 B GB 2130121B
Authority
GB
United Kingdom
Prior art keywords
producing
same
recording medium
magnetic recording
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
Application number
GB08324679A
Other versions
GB2130121A (en
GB8324679D0 (en
Inventor
Yuichi Kubota
Masaharu Nishimatsu
Toshiaki Ide
Kiyoshi Noguchi
Koji Kobayashi
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.)
TDK Corp
Original Assignee
TDK Corp
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 TDK Corp filed Critical TDK Corp
Publication of GB8324679D0 publication Critical patent/GB8324679D0/en
Publication of GB2130121A publication Critical patent/GB2130121A/en
Application granted granted Critical
Publication of GB2130121B publication Critical patent/GB2130121B/en
Expired 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
    • 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
GB08324679A 1982-10-06 1983-09-14 Magnetic recording medium and method for producing the same Expired GB2130121B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57175825A JPS5965929A (en) 1982-10-06 1982-10-06 Magnetic recording medium and its manufacture

Publications (3)

Publication Number Publication Date
GB8324679D0 GB8324679D0 (en) 1983-10-19
GB2130121A GB2130121A (en) 1984-05-31
GB2130121B true GB2130121B (en) 1986-02-26

Family

ID=16002876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08324679A Expired GB2130121B (en) 1982-10-06 1983-09-14 Magnetic recording medium and method for producing the same

Country Status (3)

Country Link
JP (1) JPS5965929A (en)
DE (1) DE3334305A1 (en)
GB (1) GB2130121B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59112430A (en) * 1982-12-16 1984-06-28 Matsushita Electric Ind Co Ltd Magnetic recording tape
JPS6050619A (en) * 1983-08-29 1985-03-20 Tdk Corp Magnetic disc and its production
DE3437887A1 (en) * 1983-10-17 1985-05-23 TDK Corporation, Tokio/Tokyo MAGNETIC RECORDING CARRIER
JPS60163228A (en) * 1984-02-01 1985-08-26 Tdk Corp Magnetic recording medium
JPS6339131A (en) * 1986-08-01 1988-02-19 Hitachi Maxell Ltd Magnetic recording medium

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57150136A (en) * 1981-03-09 1982-09-16 Fuji Photo Film Co Ltd Magnetic recording medium and its manufacture
JPS583132A (en) * 1981-06-30 1983-01-08 Fuji Photo Film Co Ltd Magnetic recording medium

Also Published As

Publication number Publication date
GB2130121A (en) 1984-05-31
JPS5965929A (en) 1984-04-14
GB8324679D0 (en) 1983-10-19
DE3334305A1 (en) 1984-04-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20010914