JPS5814318A - 垂直磁気記録用媒体 - Google Patents

垂直磁気記録用媒体

Info

Publication number
JPS5814318A
JPS5814318A JP56111880A JP11188081A JPS5814318A JP S5814318 A JPS5814318 A JP S5814318A JP 56111880 A JP56111880 A JP 56111880A JP 11188081 A JP11188081 A JP 11188081A JP S5814318 A JPS5814318 A JP S5814318A
Authority
JP
Japan
Prior art keywords
medium
layer
substrate
vertically magnetized
magnetization
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
JP56111880A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0312369B2 (enrdf_load_stackoverflow
Inventor
Kazuo Kobayashi
和雄 小林
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56111880A priority Critical patent/JPS5814318A/ja
Publication of JPS5814318A publication Critical patent/JPS5814318A/ja
Publication of JPH0312369B2 publication Critical patent/JPH0312369B2/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
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
    • G11B5/667—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers including a soft magnetic 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
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G11B5/7377—Physical structure of underlayer, e.g. texture
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy substrates
    • 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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73921—Glass or ceramic substrates

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Magnetic Record Carriers (AREA)
JP56111880A 1981-07-17 1981-07-17 垂直磁気記録用媒体 Granted JPS5814318A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56111880A JPS5814318A (ja) 1981-07-17 1981-07-17 垂直磁気記録用媒体

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56111880A JPS5814318A (ja) 1981-07-17 1981-07-17 垂直磁気記録用媒体

Publications (2)

Publication Number Publication Date
JPS5814318A true JPS5814318A (ja) 1983-01-27
JPH0312369B2 JPH0312369B2 (enrdf_load_stackoverflow) 1991-02-20

Family

ID=14572461

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56111880A Granted JPS5814318A (ja) 1981-07-17 1981-07-17 垂直磁気記録用媒体

Country Status (1)

Country Link
JP (1) JPS5814318A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057524A (ja) * 1983-09-08 1985-04-03 Seiko Epson Corp 垂直磁気記録媒体
JPS61113122A (ja) * 1984-11-07 1986-05-31 Hitachi Ltd 垂直磁気記録媒体
JPS62107430A (ja) * 1985-11-05 1987-05-18 Mitsubishi Electric Corp 垂直磁気記録媒体

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974912A (enrdf_load_stackoverflow) * 1972-10-14 1974-07-19
JPS5360205A (en) * 1976-11-10 1978-05-30 Matsushita Electric Ind Co Ltd Magnetic recording medium and its manufacture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4974912A (enrdf_load_stackoverflow) * 1972-10-14 1974-07-19
JPS5360205A (en) * 1976-11-10 1978-05-30 Matsushita Electric Ind Co Ltd Magnetic recording medium and its manufacture

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6057524A (ja) * 1983-09-08 1985-04-03 Seiko Epson Corp 垂直磁気記録媒体
JPS61113122A (ja) * 1984-11-07 1986-05-31 Hitachi Ltd 垂直磁気記録媒体
JPS62107430A (ja) * 1985-11-05 1987-05-18 Mitsubishi Electric Corp 垂直磁気記録媒体

Also Published As

Publication number Publication date
JPH0312369B2 (enrdf_load_stackoverflow) 1991-02-20

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