JPS6456590A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS6456590A
JPS6456590A JP62215732A JP21573287A JPS6456590A JP S6456590 A JPS6456590 A JP S6456590A JP 62215732 A JP62215732 A JP 62215732A JP 21573287 A JP21573287 A JP 21573287A JP S6456590 A JPS6456590 A JP S6456590A
Authority
JP
Japan
Prior art keywords
optical recording
polyester film
film
layer
recording medium
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
JP62215732A
Other languages
Japanese (ja)
Other versions
JPH087877B2 (en
Inventor
Kenji Tsunashima
Seizo Aoki
Masaru Suzuki
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 JP62215732A priority Critical patent/JPH087877B2/en
Priority to PCT/JP1988/000840 priority patent/WO1989001955A1/en
Priority to DE3850382T priority patent/DE3850382T2/en
Priority to EP88907389A priority patent/EP0331746B1/en
Publication of JPS6456590A publication Critical patent/JPS6456590A/en
Priority to US07/741,187 priority patent/US5271985A/en
Publication of JPH087877B2 publication Critical patent/JPH087877B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

PURPOSE:To prevent errors from being generated in reading of a record or in other operation owing to optical distortion or birefringence, by providing an optical recording layer on a specified polyester film comprising a polyester resin having a limit birefringence value of not more than 0.10. CONSTITUTION:A polyester film is produced by the usual method by using a polyester film having a limit birefringence value of not more than 0.10, the glass transition temperature of the film being set to at least 70 deg.C, preferably, 80-250 deg.C. More preferably, the film has a retardation of not more than 30nm, a crystallinity of 8-25% and a flexural modulus of at least 330kg/mm<2>. A hard coat layer is provided on one side of the polyester film, whereas a UV- curable layer is provided on the other side, and is cured after being grooved. Then, an optical recording layer is provided on the UV-cured layer. By this, an optical recording medium with high reliability can be obtained.
JP62215732A 1987-08-28 1987-08-28 Optical recording medium Expired - Fee Related JPH087877B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP62215732A JPH087877B2 (en) 1987-08-28 1987-08-28 Optical recording medium
PCT/JP1988/000840 WO1989001955A1 (en) 1987-08-28 1988-08-25 Polyester film
DE3850382T DE3850382T2 (en) 1987-08-28 1988-08-25 POLYESTER FILM.
EP88907389A EP0331746B1 (en) 1987-08-28 1988-08-25 Polyester film
US07/741,187 US5271985A (en) 1987-08-28 1991-07-30 Polyester film having specific surface properties

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62215732A JPH087877B2 (en) 1987-08-28 1987-08-28 Optical recording medium

Publications (2)

Publication Number Publication Date
JPS6456590A true JPS6456590A (en) 1989-03-03
JPH087877B2 JPH087877B2 (en) 1996-01-29

Family

ID=16677274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62215732A Expired - Fee Related JPH087877B2 (en) 1987-08-28 1987-08-28 Optical recording medium

Country Status (1)

Country Link
JP (1) JPH087877B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012155125A (en) * 2011-01-26 2012-08-16 Furukawa Electric Co Ltd:The Light reflection plate for liquid crystal backlight and method for manufacturing the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012155125A (en) * 2011-01-26 2012-08-16 Furukawa Electric Co Ltd:The Light reflection plate for liquid crystal backlight and method for manufacturing the same

Also Published As

Publication number Publication date
JPH087877B2 (en) 1996-01-29

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees