JPS5538613A - Base film for magnetic recording medium - Google Patents

Base film for magnetic recording medium

Info

Publication number
JPS5538613A
JPS5538613A JP10888478A JP10888478A JPS5538613A JP S5538613 A JPS5538613 A JP S5538613A JP 10888478 A JP10888478 A JP 10888478A JP 10888478 A JP10888478 A JP 10888478A JP S5538613 A JPS5538613 A JP S5538613A
Authority
JP
Japan
Prior art keywords
base film
film
magnetic layer
recording medium
magnetic recording
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.)
Granted
Application number
JP10888478A
Other languages
Japanese (ja)
Other versions
JPH0125135B2 (en
Inventor
Toshiyuki Asakura
Hiroaki Kobayashi
Yukio Noguchi
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 JP10888478A priority Critical patent/JPS5538613A/en
Priority to US06/032,726 priority patent/US4286018A/en
Priority to DE2954525A priority patent/DE2954525C2/de
Priority to GB7914550A priority patent/GB2019770B/en
Priority to DE19792916841 priority patent/DE2916841A1/en
Priority to FR7910940A priority patent/FR2433029A1/en
Priority to FR7924347A priority patent/FR2432529A1/en
Publication of JPS5538613A publication Critical patent/JPS5538613A/en
Publication of JPH0125135B2 publication Critical patent/JPH0125135B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
    • C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
    • C08G2261/31—Monomer units or repeat units incorporating structural elements in the main chain incorporating aromatic structural elements in the main chain
    • C08G2261/312—Non-condensed aromatic systems, e.g. benzene

Landscapes

  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Magnetic Record Carriers (AREA)

Abstract

PURPOSE: To maintain mechanical performance even under a high temperature by reducing variation in size due to an change in envirotment such as a temperature and humidity, by using a specific poly-P-phenylene-sulfide film as a base film.
CONSTITUTION: As a base film, a biaxial-orientation poly-P-phenylene-sulfide film is used which contains more than 90mol% of the repetitive unit of a formula, is more than 250Kg/mm2 in modulus of more than unidirectional elasticity at 20°C, and is between -2×10-4 and 2×10-4mm/(mm.C) in thermal expansivity in a range from 20 to 150°C. On this film, a magnetic layer is formed by coating, plating, or the like. Here, productivity improves because the magnetic layer can be formed under a higher temperature than before. Further, the formation of the magnetic layer can be performed in an thermally-severe atmosphere of vapor-deposition, sputtering, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP10888478A 1978-04-28 1978-09-05 Base film for magnetic recording medium Granted JPS5538613A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP10888478A JPS5538613A (en) 1978-09-05 1978-09-05 Base film for magnetic recording medium
US06/032,726 US4286018A (en) 1978-04-28 1979-04-23 Biaxially oriented poly-p-phenylene sulfide films
DE2954525A DE2954525C2 (en) 1978-04-28 1979-04-26
GB7914550A GB2019770B (en) 1978-04-28 1979-04-26 Biaxially oriented poly-p-phenylene sulphide films
DE19792916841 DE2916841A1 (en) 1978-04-28 1979-04-26 BIAXIAL ORIENTED POLY-P-PHENYLENE SULPHIDE FILM AND ITS USE
FR7910940A FR2433029A1 (en) 1978-04-28 1979-04-27 BIAXIALLY ORIENTED POLY-P-PHENYLENE SULFIDE FILMS
FR7924347A FR2432529A1 (en) 1978-04-28 1979-09-28 BIAXIAL ELONGATION POLY-P-PHENYLENE SULFIDE FILMS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10888478A JPS5538613A (en) 1978-09-05 1978-09-05 Base film for magnetic recording medium

Publications (2)

Publication Number Publication Date
JPS5538613A true JPS5538613A (en) 1980-03-18
JPH0125135B2 JPH0125135B2 (en) 1989-05-16

Family

ID=14496028

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10888478A Granted JPS5538613A (en) 1978-04-28 1978-09-05 Base film for magnetic recording medium

Country Status (1)

Country Link
JP (1) JPS5538613A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185029A (en) * 1983-04-05 1984-10-20 Teijin Ltd Magnetic recording flexible disc
JPS59207022A (en) * 1983-05-09 1984-11-24 Toray Ind Inc Magnetic recording medium
JPS6018822A (en) * 1983-07-13 1985-01-30 Teijin Ltd Thin film type magnetic recording medium
JPS6087436A (en) * 1983-10-19 1985-05-17 Teijin Ltd Flexible disc for magnetic recording
JPS60102436A (en) * 1984-06-23 1985-06-06 Hitachi Constr Mach Co Ltd Loading weight displayer for oil-pressure shovel
JPS60141930A (en) * 1983-12-28 1985-07-27 Hitachi Constr Mach Co Ltd Loading weight display device for hydraulic shovel
US4777228A (en) * 1984-06-29 1988-10-11 Kureha Kagaku Kogyo Kabushiki Kaisha Biaxially oriented paraphenylene sulfide block copolymer film and process for producing the same
JPS63315220A (en) * 1987-06-18 1988-12-22 Diafoil Co Ltd Biaxially oriented poly-p-phenylene sulfide film

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59185029A (en) * 1983-04-05 1984-10-20 Teijin Ltd Magnetic recording flexible disc
JPH0368450B2 (en) * 1983-04-05 1991-10-28 Teijin Ltd
JPS59207022A (en) * 1983-05-09 1984-11-24 Toray Ind Inc Magnetic recording medium
JPS6018822A (en) * 1983-07-13 1985-01-30 Teijin Ltd Thin film type magnetic recording medium
JPS6087436A (en) * 1983-10-19 1985-05-17 Teijin Ltd Flexible disc for magnetic recording
JPS60141930A (en) * 1983-12-28 1985-07-27 Hitachi Constr Mach Co Ltd Loading weight display device for hydraulic shovel
JPH0441289B2 (en) * 1983-12-28 1992-07-07 Hitachi Construction Machinery
JPS60102436A (en) * 1984-06-23 1985-06-06 Hitachi Constr Mach Co Ltd Loading weight displayer for oil-pressure shovel
JPH0444930B2 (en) * 1984-06-23 1992-07-23 Hitachi Construction Machinery
US4777228A (en) * 1984-06-29 1988-10-11 Kureha Kagaku Kogyo Kabushiki Kaisha Biaxially oriented paraphenylene sulfide block copolymer film and process for producing the same
JPS63315220A (en) * 1987-06-18 1988-12-22 Diafoil Co Ltd Biaxially oriented poly-p-phenylene sulfide film

Also Published As

Publication number Publication date
JPH0125135B2 (en) 1989-05-16

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