JPH0353686B2 - - Google Patents

Info

Publication number
JPH0353686B2
JPH0353686B2 JP57124346A JP12434682A JPH0353686B2 JP H0353686 B2 JPH0353686 B2 JP H0353686B2 JP 57124346 A JP57124346 A JP 57124346A JP 12434682 A JP12434682 A JP 12434682A JP H0353686 B2 JPH0353686 B2 JP H0353686B2
Authority
JP
Japan
Prior art keywords
film
recording medium
magnetic
recording
magnetic recording
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
JP57124346A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5916130A (ja
Inventor
Yasutaro Kamisaka
Hideo Fujiwara
Sadao Hishama
Kazuo Shiiki
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.)
Hitachi Ltd
Maxell Ltd
Original Assignee
Hitachi Ltd
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 Ltd, Hitachi Maxell Ltd filed Critical Hitachi Ltd
Priority to JP57124346A priority Critical patent/JPS5916130A/ja
Priority to US06/513,422 priority patent/US4621030A/en
Priority to DE8383107031T priority patent/DE3377829D1/de
Priority to EP83107031A priority patent/EP0099564B1/en
Publication of JPS5916130A publication Critical patent/JPS5916130A/ja
Publication of JPH0353686B2 publication Critical patent/JPH0353686B2/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
    • G11B5/672—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having different compositions in a plurality of magnetic layers, e.g. layer compositions having differing elemental components or differing proportions of elements

Landscapes

  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
JP57124346A 1982-07-19 1982-07-19 垂直磁気記録媒体 Granted JPS5916130A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP57124346A JPS5916130A (ja) 1982-07-19 1982-07-19 垂直磁気記録媒体
US06/513,422 US4621030A (en) 1982-07-19 1983-07-13 Perpendicular magnetic recording medium and manufacturing method thereof
DE8383107031T DE3377829D1 (en) 1982-07-19 1983-07-18 Perpendicular magnetic recording medium and manufacturing method thereof
EP83107031A EP0099564B1 (en) 1982-07-19 1983-07-18 Perpendicular magnetic recording medium and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57124346A JPS5916130A (ja) 1982-07-19 1982-07-19 垂直磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS5916130A JPS5916130A (ja) 1984-01-27
JPH0353686B2 true JPH0353686B2 (enrdf_load_stackoverflow) 1991-08-15

Family

ID=14883086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57124346A Granted JPS5916130A (ja) 1982-07-19 1982-07-19 垂直磁気記録媒体

Country Status (1)

Country Link
JP (1) JPS5916130A (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60209924A (ja) * 1984-04-03 1985-10-22 Nec Corp 垂直磁気記録体及びその製造方法
US5192618A (en) * 1991-04-26 1993-03-09 International Business Machines Corporation Corrosion protection by femn by ion implantation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2428886A1 (fr) * 1978-06-13 1980-01-11 Cii Honeywell Bull Support d'information magnetique a enregistrement perpendiculaire

Also Published As

Publication number Publication date
JPS5916130A (ja) 1984-01-27

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