JPH0413135B2 - - Google Patents

Info

Publication number
JPH0413135B2
JPH0413135B2 JP58003084A JP308483A JPH0413135B2 JP H0413135 B2 JPH0413135 B2 JP H0413135B2 JP 58003084 A JP58003084 A JP 58003084A JP 308483 A JP308483 A JP 308483A JP H0413135 B2 JPH0413135 B2 JP H0413135B2
Authority
JP
Japan
Prior art keywords
film
plane
less
stretching
humidity
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
JP58003084A
Other languages
English (en)
Japanese (ja)
Other versions
JPS59139131A (ja
Inventor
Masaji Watanabe
Takeo Kanezaki
Yoshinojo Tomitaka
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.)
Diafoil Co Ltd
Original Assignee
Diafoil 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 Diafoil Co Ltd filed Critical Diafoil Co Ltd
Priority to JP58003084A priority Critical patent/JPS59139131A/ja
Publication of JPS59139131A publication Critical patent/JPS59139131A/ja
Publication of JPH0413135B2 publication Critical patent/JPH0413135B2/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

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
JP58003084A 1983-01-12 1983-01-12 磁気デイスク用ポリエステルフイルム Granted JPS59139131A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58003084A JPS59139131A (ja) 1983-01-12 1983-01-12 磁気デイスク用ポリエステルフイルム

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58003084A JPS59139131A (ja) 1983-01-12 1983-01-12 磁気デイスク用ポリエステルフイルム

Publications (2)

Publication Number Publication Date
JPS59139131A JPS59139131A (ja) 1984-08-09
JPH0413135B2 true JPH0413135B2 (en]) 1992-03-06

Family

ID=11547471

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58003084A Granted JPS59139131A (ja) 1983-01-12 1983-01-12 磁気デイスク用ポリエステルフイルム

Country Status (1)

Country Link
JP (1) JPS59139131A (en])

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0626015B2 (ja) * 1985-10-09 1994-04-06 帝人株式会社 磁気記録フレキシブルデイスク
JPS62124926A (ja) * 1985-11-27 1987-06-06 Teijin Ltd ポリエステルフイルム
JPS63288735A (ja) * 1987-05-21 1988-11-25 Teijin Ltd ポリエステルフイルム
JPH08132523A (ja) * 1994-11-09 1996-05-28 Toray Ind Inc 低熱収縮性ポリエステルフィルム
JPH08164558A (ja) * 1994-12-15 1996-06-25 Toray Ind Inc ポリエステルフィルム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757629A (en) * 1980-09-25 1982-04-06 Teijin Ltd Manufacture of polyester film
JPS5757630A (en) * 1980-09-25 1982-04-06 Teijin Ltd Manufacture of biaxially drawn polyester film
JPS5759717A (en) * 1980-09-29 1982-04-10 Teijin Ltd Preparation of biaxially oriented polyester film
JPS58168526A (ja) * 1982-03-31 1983-10-04 Teijin Ltd 近赤外線吸収性ポリエステルフイルム

Also Published As

Publication number Publication date
JPS59139131A (ja) 1984-08-09

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