JPH0328732B2 - - Google Patents

Info

Publication number
JPH0328732B2
JPH0328732B2 JP57159841A JP15984182A JPH0328732B2 JP H0328732 B2 JPH0328732 B2 JP H0328732B2 JP 57159841 A JP57159841 A JP 57159841A JP 15984182 A JP15984182 A JP 15984182A JP H0328732 B2 JPH0328732 B2 JP H0328732B2
Authority
JP
Japan
Prior art keywords
thin film
metal thin
film
ferromagnetic metal
protrusions
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
JP57159841A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5948825A (ja
Inventor
Takashi Suzuki
Kunio Hibino
Mikio Murai
Shigeki Kawase
Koichi Shinohara
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP57159841A priority Critical patent/JPS5948825A/ja
Priority to US06/521,075 priority patent/US4540618A/en
Priority to EP83107984A priority patent/EP0101080B2/en
Priority to DE8383107984T priority patent/DE3371260D1/de
Publication of JPS5948825A publication Critical patent/JPS5948825A/ja
Publication of JPH0328732B2 publication Critical patent/JPH0328732B2/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
    • G11B5/733—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 addition of non-magnetic particles

Landscapes

  • Lubricants (AREA)
  • Magnetic Record Carriers (AREA)
JP57159841A 1982-08-12 1982-09-14 磁気記録媒体 Granted JPS5948825A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP57159841A JPS5948825A (ja) 1982-09-14 1982-09-14 磁気記録媒体
US06/521,075 US4540618A (en) 1982-08-12 1983-08-08 Magnetic recording medium
EP83107984A EP0101080B2 (en) 1982-08-12 1983-08-11 Magnetic recording medium
DE8383107984T DE3371260D1 (en) 1982-08-12 1983-08-11 Magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57159841A JPS5948825A (ja) 1982-09-14 1982-09-14 磁気記録媒体

Publications (2)

Publication Number Publication Date
JPS5948825A JPS5948825A (ja) 1984-03-21
JPH0328732B2 true JPH0328732B2 (en]) 1991-04-22

Family

ID=15702401

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57159841A Granted JPS5948825A (ja) 1982-08-12 1982-09-14 磁気記録媒体

Country Status (1)

Country Link
JP (1) JPS5948825A (en])

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60211617A (ja) * 1984-04-05 1985-10-24 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS60251510A (ja) * 1984-05-28 1985-12-12 Fuji Photo Film Co Ltd 磁気記録媒体
JPH0795366B2 (ja) * 1984-05-30 1995-10-11 ティーディーケイ株式会社 磁気記録方法
JPS6126929A (ja) * 1984-07-17 1986-02-06 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS61110333A (ja) * 1984-11-05 1986-05-28 Matsushita Electric Ind Co Ltd 磁気記録媒体
JPS61204827A (ja) * 1985-03-06 1986-09-10 Tdk Corp 磁気記録媒体用ベ−スフイルムおよび磁気記録媒体
JPH0719351B2 (ja) * 1985-03-28 1995-03-06 松下電器産業株式会社 磁気記録媒体
JPS61239424A (ja) * 1985-04-16 1986-10-24 Matsushita Electric Ind Co Ltd 磁気デイスク
JPS6265227A (ja) * 1985-09-18 1987-03-24 Teijin Ltd 垂直磁気記録用媒体
JP2777003B2 (ja) * 1991-06-28 1998-07-16 帝人株式会社 磁気記録媒体用ポリエステルフイルム及びその製造方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5360205A (en) * 1976-11-10 1978-05-30 Matsushita Electric Ind Co Ltd Magnetic recording medium and its manufacture
JPS5613515A (en) * 1979-07-16 1981-02-09 Tdk Corp Magnetic recording medium

Also Published As

Publication number Publication date
JPS5948825A (ja) 1984-03-21

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