GB2091631B - Base film for magnetic recording tape - Google Patents

Base film for magnetic recording tape

Info

Publication number
GB2091631B
GB2091631B GB8100140A GB8100140A GB2091631B GB 2091631 B GB2091631 B GB 2091631B GB 8100140 A GB8100140 A GB 8100140A GB 8100140 A GB8100140 A GB 8100140A GB 2091631 B GB2091631 B GB 2091631B
Authority
GB
United Kingdom
Prior art keywords
magnetic recording
base film
recording tape
tape
film
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
GB8100140A
Other versions
GB2091631A (en
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 GB8100140A priority Critical patent/GB2091631B/en
Priority to DE19813101232 priority patent/DE3101232A1/en
Publication of GB2091631A publication Critical patent/GB2091631A/en
Application granted granted Critical
Publication of GB2091631B publication Critical patent/GB2091631B/en
Expired 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
GB8100140A 1981-01-05 1981-01-05 Base film for magnetic recording tape Expired GB2091631B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8100140A GB2091631B (en) 1981-01-05 1981-01-05 Base film for magnetic recording tape
DE19813101232 DE3101232A1 (en) 1981-01-05 1981-01-16 Film support for a tape for magnetic recordings

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8100140A GB2091631B (en) 1981-01-05 1981-01-05 Base film for magnetic recording tape
DE19813101232 DE3101232A1 (en) 1981-01-05 1981-01-16 Film support for a tape for magnetic recordings

Publications (2)

Publication Number Publication Date
GB2091631A GB2091631A (en) 1982-08-04
GB2091631B true GB2091631B (en) 1984-04-18

Family

ID=25790620

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8100140A Expired GB2091631B (en) 1981-01-05 1981-01-05 Base film for magnetic recording tape

Country Status (2)

Country Link
DE (1) DE3101232A1 (en)
GB (1) GB2091631B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507729A1 (en) * 1985-03-05 1986-09-11 Hoechst Ag, 6230 Frankfurt BIAXIAL-ORIENTED FILM WITH HIGH SCRATCH AND ABRASION RESISTANCE
JPH0625267B2 (en) * 1985-12-17 1994-04-06 ダイアホイルヘキスト株式会社 Polyethylene-2,6-naphthalate film for high density magnetic recording media
JPH0232151A (en) * 1988-07-21 1990-02-01 Diafoil Co Ltd Polyester composition
CA2083976A1 (en) * 1991-12-04 1993-06-05 Shinichi Kinoshita Optical tape

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1591582A (en) * 1977-03-01 1981-06-24 Teijin Ltd Polyester film having slipperiness
JPS5564635A (en) * 1978-11-08 1980-05-15 Tdk Corp Base for magnetic recording tape
GB2052521B (en) * 1979-05-19 1983-03-16 Diafoil Co Ltd Polyester film containing fine powder crosslinked polymer

Also Published As

Publication number Publication date
DE3101232A1 (en) 1982-08-26
GB2091631A (en) 1982-08-04
DE3101232C2 (en) 1988-06-01

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Legal Events

Date Code Title Description
PE20 Patent expired after termination of 20 years

Effective date: 20010104