JPS5922220A - 磁気ディスク媒体用基板 - Google Patents

磁気ディスク媒体用基板

Info

Publication number
JPS5922220A
JPS5922220A JP57130456A JP13045682A JPS5922220A JP S5922220 A JPS5922220 A JP S5922220A JP 57130456 A JP57130456 A JP 57130456A JP 13045682 A JP13045682 A JP 13045682A JP S5922220 A JPS5922220 A JP S5922220A
Authority
JP
Japan
Prior art keywords
substrate
etching
mirror
accuracy
recessed part
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
JP57130456A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0130226B2 (cg-RX-API-DMAC7.html
Inventor
Akio Tago
田子　章男
Keiichi Yanagisawa
佳一 柳沢
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.)
NTT Inc
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP57130456A priority Critical patent/JPS5922220A/ja
Publication of JPS5922220A publication Critical patent/JPS5922220A/ja
Publication of JPH0130226B2 publication Critical patent/JPH0130226B2/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
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording 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
    • G11B5/739—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP57130456A 1982-07-28 1982-07-28 磁気ディスク媒体用基板 Granted JPS5922220A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57130456A JPS5922220A (ja) 1982-07-28 1982-07-28 磁気ディスク媒体用基板

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57130456A JPS5922220A (ja) 1982-07-28 1982-07-28 磁気ディスク媒体用基板

Publications (2)

Publication Number Publication Date
JPS5922220A true JPS5922220A (ja) 1984-02-04
JPH0130226B2 JPH0130226B2 (cg-RX-API-DMAC7.html) 1989-06-16

Family

ID=15034668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57130456A Granted JPS5922220A (ja) 1982-07-28 1982-07-28 磁気ディスク媒体用基板

Country Status (1)

Country Link
JP (1) JPS5922220A (cg-RX-API-DMAC7.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6476422A (en) * 1987-09-16 1989-03-22 Fuji Electric Co Ltd Magnetic disk
JPH0191319A (ja) * 1987-09-30 1989-04-11 Noboru Tsuya 磁気ディスクの製造方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6476422A (en) * 1987-09-16 1989-03-22 Fuji Electric Co Ltd Magnetic disk
JPH0191319A (ja) * 1987-09-30 1989-04-11 Noboru Tsuya 磁気ディスクの製造方法

Also Published As

Publication number Publication date
JPH0130226B2 (cg-RX-API-DMAC7.html) 1989-06-16

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