JPH0451335B2 - - Google Patents

Info

Publication number
JPH0451335B2
JPH0451335B2 JP58077387A JP7738783A JPH0451335B2 JP H0451335 B2 JPH0451335 B2 JP H0451335B2 JP 58077387 A JP58077387 A JP 58077387A JP 7738783 A JP7738783 A JP 7738783A JP H0451335 B2 JPH0451335 B2 JP H0451335B2
Authority
JP
Japan
Prior art keywords
film
tape
stretched
value
minutes
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
JP58077387A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59203230A (ja
Inventor
Tomio Katayama
Sadahiro Kadoya
Tomio Adachi
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.)
Teijin Ltd
Original Assignee
Teijin 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 Teijin Ltd filed Critical Teijin Ltd
Priority to JP58077387A priority Critical patent/JPS59203230A/ja
Publication of JPS59203230A publication Critical patent/JPS59203230A/ja
Publication of JPH0451335B2 publication Critical patent/JPH0451335B2/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
    • 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

  • Magnetic Record Carriers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
JP58077387A 1983-05-04 1983-05-04 二軸配向ポリエステルフイルム Granted JPS59203230A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58077387A JPS59203230A (ja) 1983-05-04 1983-05-04 二軸配向ポリエステルフイルム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58077387A JPS59203230A (ja) 1983-05-04 1983-05-04 二軸配向ポリエステルフイルム

Publications (2)

Publication Number Publication Date
JPS59203230A JPS59203230A (ja) 1984-11-17
JPH0451335B2 true JPH0451335B2 (cs) 1992-08-18

Family

ID=13632475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58077387A Granted JPS59203230A (ja) 1983-05-04 1983-05-04 二軸配向ポリエステルフイルム

Country Status (1)

Country Link
JP (1) JPS59203230A (cs)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60150232A (ja) * 1984-01-17 1985-08-07 Sumitomo Chem Co Ltd 垂直磁化用ナフタレ−トポリエステルフイルム
JPH0628098B2 (ja) * 1985-07-23 1994-04-13 帝人株式会社 磁気記録用テ−プ
JPH0680525B2 (ja) * 1985-07-30 1994-10-12 帝人株式会社 磁気記録テ−プ
JPH0618069B2 (ja) * 1985-10-14 1994-03-09 帝人株式会社 オ−デイオカセツト用テ−プ
JPH0668825B2 (ja) * 1985-10-29 1994-08-31 帝人株式会社 磁気記録テ−プ
JPS62109216A (ja) * 1985-11-07 1987-05-20 Teijin Ltd 垂直磁気記録用媒体

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53106783A (en) * 1977-03-01 1978-09-18 Teijin Ltd Polyester film with improved travelling property
JPS5415978A (en) * 1977-06-28 1979-02-06 Teijin Ltd Polyester film

Also Published As

Publication number Publication date
JPS59203230A (ja) 1984-11-17

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