JPS5766541A - Optical disk - Google Patents

Optical disk

Info

Publication number
JPS5766541A
JPS5766541A JP55141721A JP14172180A JPS5766541A JP S5766541 A JPS5766541 A JP S5766541A JP 55141721 A JP55141721 A JP 55141721A JP 14172180 A JP14172180 A JP 14172180A JP S5766541 A JPS5766541 A JP S5766541A
Authority
JP
Japan
Prior art keywords
layer
optical disk
protective layer
sensitivity
life
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
JP55141721A
Other languages
Japanese (ja)
Inventor
Hideo Ando
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 JP55141721A priority Critical patent/JPS5766541A/en
Priority to EP81107782A priority patent/EP0049821B1/en
Priority to DE8181107782T priority patent/DE3176118D1/en
Priority to US06/309,405 priority patent/US4443806A/en
Publication of JPS5766541A publication Critical patent/JPS5766541A/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 prolong the life of an optical disk without spoiling the sensitivity of recording layer, by forming the 1st organic protective layer and the 2nd inorganic protective layer successively in order on the recording layer of the optical disk. CONSTITUTION:On a transparent plastic substrate 1, a recording layer 2 is formed by using Te, etc. On the layer 2, the 1st protective layer 3 of an organic material, such as polystyrene, acrylic and epoxy resin, is formed. Then, the 2nd protective layer 4 is formed on the layer by using one of SiO, SiO2, Si3N4, and a ''NESA '' layer. This disk is irradiated with converged layer to evaporate the Te layer 2, and consequently Te vapor is confined in the laser 3 and liquefied to solidify swelling at the circumferential part of a pit, so that a decrease in sensitivity is hard to occur. The inorganic layer 4 on the layer 3 stops the permeation of O2 and H2O and also prevents the layer 2 from deteriorating owing to oxidation, etc., thus prolonging the life of the optical disk.
JP55141721A 1980-10-09 1980-10-09 Optical disk Pending JPS5766541A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP55141721A JPS5766541A (en) 1980-10-09 1980-10-09 Optical disk
EP81107782A EP0049821B1 (en) 1980-10-09 1981-09-30 Data recording medium
DE8181107782T DE3176118D1 (en) 1980-10-09 1981-09-30 Data recording medium
US06/309,405 US4443806A (en) 1980-10-09 1981-10-07 Data recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55141721A JPS5766541A (en) 1980-10-09 1980-10-09 Optical disk

Publications (1)

Publication Number Publication Date
JPS5766541A true JPS5766541A (en) 1982-04-22

Family

ID=15298651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55141721A Pending JPS5766541A (en) 1980-10-09 1980-10-09 Optical disk

Country Status (1)

Country Link
JP (1) JPS5766541A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123033A (en) * 1984-11-20 1986-06-10 Matsushita Electric Ind Co Ltd Structural body for protective film
JPS62245541A (en) * 1986-04-17 1987-10-26 Matsushita Electric Ind Co Ltd Optical recording member
JPS632223U (en) * 1986-06-23 1988-01-08
US4908294A (en) * 1986-02-13 1990-03-13 Olympus Optical Co., Ltd. Optical information recording medium
JPH04339333A (en) * 1991-03-13 1992-11-26 Matsushita Electric Ind Co Ltd Optical information recording medium
US6063467A (en) * 1997-02-24 2000-05-16 Fuji Electric Co., Ltd. Optical recording medium
US6103331A (en) * 1997-09-26 2000-08-15 Fuji Electric Co., Ltd. Optical recording medium comprising organic dye thin film
US6165580A (en) * 1997-11-11 2000-12-26 Fuji Electric Co., Ltd. Optical recording medium
EP1296319A4 (en) * 2000-04-25 2005-04-13 Matsushita Electric Ind Co Ltd Method of manufacturing disk substrate, and method and device for manufacturing optical disk

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61123033A (en) * 1984-11-20 1986-06-10 Matsushita Electric Ind Co Ltd Structural body for protective film
US4908294A (en) * 1986-02-13 1990-03-13 Olympus Optical Co., Ltd. Optical information recording medium
JPS62245541A (en) * 1986-04-17 1987-10-26 Matsushita Electric Ind Co Ltd Optical recording member
JPS632223U (en) * 1986-06-23 1988-01-08
JPH04339333A (en) * 1991-03-13 1992-11-26 Matsushita Electric Ind Co Ltd Optical information recording medium
US6063467A (en) * 1997-02-24 2000-05-16 Fuji Electric Co., Ltd. Optical recording medium
US6103331A (en) * 1997-09-26 2000-08-15 Fuji Electric Co., Ltd. Optical recording medium comprising organic dye thin film
US6165580A (en) * 1997-11-11 2000-12-26 Fuji Electric Co., Ltd. Optical recording medium
EP1296319A4 (en) * 2000-04-25 2005-04-13 Matsushita Electric Ind Co Ltd Method of manufacturing disk substrate, and method and device for manufacturing optical disk
US7101593B2 (en) 2000-04-25 2006-09-05 Matsushita Electric Industrial Co., Ltd. Method for producing a disk-shaped substrate and method for producing an optical disk

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