JPH0138661B2 - - Google Patents

Info

Publication number
JPH0138661B2
JPH0138661B2 JP58158107A JP15810783A JPH0138661B2 JP H0138661 B2 JPH0138661 B2 JP H0138661B2 JP 58158107 A JP58158107 A JP 58158107A JP 15810783 A JP15810783 A JP 15810783A JP H0138661 B2 JPH0138661 B2 JP H0138661B2
Authority
JP
Japan
Prior art keywords
film
less
weight
particles
tape
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
JP58158107A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5982629A (ja
Inventor
Yasuki Miura
Masahiko Mogi
Kazuo Okabe
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP58158107A priority Critical patent/JPS5982629A/ja
Publication of JPS5982629A publication Critical patent/JPS5982629A/ja
Publication of JPH0138661B2 publication Critical patent/JPH0138661B2/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
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73935—Polyester substrates, e.g. polyethylene terephthalate characterised by roughness or surface features, e.g. by added particles
    • 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
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • 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
    • G11B5/73923—Organic polymer substrates
    • G11B5/73927—Polyester substrates, e.g. polyethylene terephthalate
    • G11B5/73929—Polyester substrates, e.g. polyethylene terephthalate comprising naphthalene ring compounds, e.g. polyethylene naphthalate substrates

Landscapes

  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Magnetic Record Carriers (AREA)
JP58158107A 1983-08-31 1983-08-31 磁気記録用ベ−スフイルム Granted JPS5982629A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58158107A JPS5982629A (ja) 1983-08-31 1983-08-31 磁気記録用ベ−スフイルム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58158107A JPS5982629A (ja) 1983-08-31 1983-08-31 磁気記録用ベ−スフイルム

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP16086179A Division JPS5683842A (en) 1979-12-13 1979-12-13 Base film for magnetic recording

Publications (2)

Publication Number Publication Date
JPS5982629A JPS5982629A (ja) 1984-05-12
JPH0138661B2 true JPH0138661B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-08-15

Family

ID=15664452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58158107A Granted JPS5982629A (ja) 1983-08-31 1983-08-31 磁気記録用ベ−スフイルム

Country Status (1)

Country Link
JP (1) JPS5982629A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261026A (ja) * 1985-05-15 1986-11-19 Teijin Ltd 二軸延伸ポリエステルフイルム
JPH0684442B2 (ja) * 1987-04-13 1994-10-26 帝人株式会社 ポリエステルフイルム
JPH0684443B2 (ja) * 1987-04-13 1994-10-26 帝人株式会社 ポリエステルフイルム
JPH01185818A (ja) * 1988-01-20 1989-07-25 Toshiba Corp 磁気テープ

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115571A (en) * 1975-04-04 1976-10-12 Asahi Chemical Ind Method of manufacturing polyester film
JPS53106783A (en) * 1977-03-01 1978-09-18 Teijin Ltd Polyester film with improved travelling property
JPS6059011B2 (ja) * 1977-03-01 1985-12-23 ユニチカ株式会社 吸着処理方法
JPS5415978A (en) * 1977-06-28 1979-02-06 Teijin Ltd Polyester film
JPS5415979A (en) * 1977-07-06 1979-02-06 Teijin Ltd Polyester film
JPS5417981A (en) * 1977-07-11 1979-02-09 Teijin Ltd Oriented polyester film for photosensive recorder
JPS5434207A (en) * 1977-08-23 1979-03-13 Teijin Ltd Polyester film
JPS582410B2 (ja) * 1978-04-27 1983-01-17 松下電器産業株式会社 磁気記録媒体

Also Published As

Publication number Publication date
JPS5982629A (ja) 1984-05-12

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