JPS5774834A - Optical information recording system - Google Patents

Optical information recording system

Info

Publication number
JPS5774834A
JPS5774834A JP14896080A JP14896080A JPS5774834A JP S5774834 A JPS5774834 A JP S5774834A JP 14896080 A JP14896080 A JP 14896080A JP 14896080 A JP14896080 A JP 14896080A JP S5774834 A JPS5774834 A JP S5774834A
Authority
JP
Japan
Prior art keywords
optical disk
guide groove
laser beam
layer
metallic layer
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
JP14896080A
Other languages
Japanese (ja)
Inventor
Shigeru Arai
Yasuyuki Goto
Nagaaki Etsuno
Hironori Goto
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP14896080A priority Critical patent/JPS5774834A/en
Publication of JPS5774834A publication Critical patent/JPS5774834A/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
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material

Landscapes

  • Optical Recording Or Reproduction (AREA)

Abstract

PURPOSE:To easily obtain an optical disk provided with a guide groove, by forming a thermoplastic substance layer on the lower surface of a metallic layer of an optical disk, so that the guide groove having prescribed depth can be formed easily by irradiation of a laser beam. CONSTITUTION:On a transparent substrate 12 such as glass or acrylic resin, of an optical disk 12, a transparent thermoplastic resin layer 14 such as acrylic resin, and a low melting point metallic layer 15 such as Te and Bi are provided. The optical disk 12 is rotated by a spindle 12, and a light beam from a laser 16 is irradiated through a lens 17, a galvano-mirror 19 and a lens 18. Intensity of a laser beam is controlled so that a groove 21 having depth of 1/8 wavelength is formed on the thermoplastic resin layer 14, without evaporating the metallic layer 15. In case information is recorded, a bit 23 is formed by irradiating the guide groove 21 with a recording laser beam 22. In this way, the optical disk 12 provided with the guide groove 21 is obtained easily.
JP14896080A 1980-10-24 1980-10-24 Optical information recording system Pending JPS5774834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14896080A JPS5774834A (en) 1980-10-24 1980-10-24 Optical information recording system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14896080A JPS5774834A (en) 1980-10-24 1980-10-24 Optical information recording system

Publications (1)

Publication Number Publication Date
JPS5774834A true JPS5774834A (en) 1982-05-11

Family

ID=15464504

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14896080A Pending JPS5774834A (en) 1980-10-24 1980-10-24 Optical information recording system

Country Status (1)

Country Link
JP (1) JPS5774834A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840873A (en) * 1986-07-11 1989-06-20 Kuraray Co., Ltd. Production of optical recording medium
US4871649A (en) * 1986-03-20 1989-10-03 Canon Kabushiki Kaisha Optical recording medium and optical recording method using the same
US4965153A (en) * 1986-04-21 1990-10-23 Canon Kabushiki Kaisha Optical recording medium
US5750293A (en) * 1991-10-28 1998-05-12 Ricoh Company, Ltd. Method of recording and reproducing information

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4871649A (en) * 1986-03-20 1989-10-03 Canon Kabushiki Kaisha Optical recording medium and optical recording method using the same
US4965153A (en) * 1986-04-21 1990-10-23 Canon Kabushiki Kaisha Optical recording medium
US4840873A (en) * 1986-07-11 1989-06-20 Kuraray Co., Ltd. Production of optical recording medium
US5750293A (en) * 1991-10-28 1998-05-12 Ricoh Company, Ltd. Method of recording and reproducing information

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