JPS5788537A - Optical disc - Google Patents

Optical disc

Info

Publication number
JPS5788537A
JPS5788537A JP55162929A JP16292980A JPS5788537A JP S5788537 A JPS5788537 A JP S5788537A JP 55162929 A JP55162929 A JP 55162929A JP 16292980 A JP16292980 A JP 16292980A JP S5788537 A JPS5788537 A JP S5788537A
Authority
JP
Japan
Prior art keywords
film
optical recording
coated
laser beam
air
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.)
Pending
Application number
JP55162929A
Other languages
Japanese (ja)
Inventor
Takashi Takaoka
Masahiko Mochizuki
Kazumichi Nagaai
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55162929A priority Critical patent/JPS5788537A/en
Publication of JPS5788537A publication Critical patent/JPS5788537A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To keep recording characteristics over a long period, by preventing the contact between an optical recording film and air, through the coating of an inorganic film with a specified thicknss on the surface of the optical recording film. CONSTITUTION:Plastic substrates 11, 12 to which laser beam transmits are constituted into a discoidal shape, and a multilayer film 13 is coated by leaving the central part and external circumference part at the back of each substrate. Each film 13 consists of three layers; an optical recording film 14, several hundreds Angstrom thick made of metal, and organic films 15 coated on both the sides of the film 14. The films 15 consists of organic substance such as glass, SiO2, TiO2, In2O3, and CeO2 which can transmit laser beam and cannot transmit active gas such as water vapor and oxygen existing in air, and the thickness is 500-10,000 Angstrom . As a result, the time aging of the recording characteristics can be avoided.
JP55162929A 1980-11-19 1980-11-19 Optical disc Pending JPS5788537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55162929A JPS5788537A (en) 1980-11-19 1980-11-19 Optical disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55162929A JPS5788537A (en) 1980-11-19 1980-11-19 Optical disc

Publications (1)

Publication Number Publication Date
JPS5788537A true JPS5788537A (en) 1982-06-02

Family

ID=15763911

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55162929A Pending JPS5788537A (en) 1980-11-19 1980-11-19 Optical disc

Country Status (1)

Country Link
JP (1) JPS5788537A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124891A (en) * 1982-12-31 1984-07-19 Tdk Corp Optical recording medium
JPS60177449A (en) * 1984-02-22 1985-09-11 Daicel Chem Ind Ltd Optical type information recording carrier
JPS6224458A (en) * 1985-07-24 1987-02-02 Daicel Chem Ind Ltd Photomagnetic disk
JPS6254854A (en) * 1985-09-03 1987-03-10 Matsushita Electric Ind Co Ltd Optical recording member
JPS62103859A (en) * 1985-10-30 1987-05-14 Daicel Chem Ind Ltd Optical magnetic disk with excellent durability
JPS62129952A (en) * 1985-11-30 1987-06-12 Hitachi Maxell Ltd Information recording disk
JPS62236153A (en) * 1986-04-07 1987-10-16 Sumitomo Bakelite Co Ltd Optical recording medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114263A (en) * 1974-07-26 1976-02-04 Hitachi Ltd Setsugono roeiboshiho
JPS52146221A (en) * 1976-05-31 1977-12-05 Asahi Chemical Ind Image forming material
JPS52156605A (en) * 1976-06-18 1977-12-27 Thomson Brandt Data carrier and method of producing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5114263A (en) * 1974-07-26 1976-02-04 Hitachi Ltd Setsugono roeiboshiho
JPS52146221A (en) * 1976-05-31 1977-12-05 Asahi Chemical Ind Image forming material
JPS52156605A (en) * 1976-06-18 1977-12-27 Thomson Brandt Data carrier and method of producing same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59124891A (en) * 1982-12-31 1984-07-19 Tdk Corp Optical recording medium
JPH0521753B2 (en) * 1982-12-31 1993-03-25 Tdk Electronics Co Ltd
JPS60177449A (en) * 1984-02-22 1985-09-11 Daicel Chem Ind Ltd Optical type information recording carrier
JPS6224458A (en) * 1985-07-24 1987-02-02 Daicel Chem Ind Ltd Photomagnetic disk
JPS6254854A (en) * 1985-09-03 1987-03-10 Matsushita Electric Ind Co Ltd Optical recording member
JPH0687320B2 (en) * 1985-09-03 1994-11-02 松下電器産業株式会社 Optical recording member
JPS62103859A (en) * 1985-10-30 1987-05-14 Daicel Chem Ind Ltd Optical magnetic disk with excellent durability
JPS62129952A (en) * 1985-11-30 1987-06-12 Hitachi Maxell Ltd Information recording disk
JPS62236153A (en) * 1986-04-07 1987-10-16 Sumitomo Bakelite Co Ltd Optical recording medium

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