JPS54118205A - Infomration recording disc - Google Patents

Infomration recording disc

Info

Publication number
JPS54118205A
JPS54118205A JP2576778A JP2576778A JPS54118205A JP S54118205 A JPS54118205 A JP S54118205A JP 2576778 A JP2576778 A JP 2576778A JP 2576778 A JP2576778 A JP 2576778A JP S54118205 A JPS54118205 A JP S54118205A
Authority
JP
Japan
Prior art keywords
metal film
information signals
recorded
infomration
forming
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
JP2576778A
Other languages
Japanese (ja)
Inventor
Seio Watanabe
Takahiro Kubo
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2576778A priority Critical patent/JPS54118205A/en
Publication of JPS54118205A publication Critical patent/JPS54118205A/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
    • G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To let the disc maintain the sureness of reproduction over a long period of time by forming the pits corresponding to information signals to the metal film deposited on a disc form substrate and further providing a stable covering metal film thereon. CONSTITUTION:A metal film 2 of about 800 to 2000 Angstrom in thickness is formed on a glass substrate 1 by evaporating aluminum. Next, with this being rotated, the laser light having been modulated with the information signals to be recorded is radiated to allow the metal film 2 to locally evaporate and fly off, thus forming the pits 3 corresponding to the information signals. Following the this, a metal film 3 is formed on the surface having been recorded with the informations by evaporating chromium, gold or other.
JP2576778A 1978-03-06 1978-03-06 Infomration recording disc Pending JPS54118205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2576778A JPS54118205A (en) 1978-03-06 1978-03-06 Infomration recording disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2576778A JPS54118205A (en) 1978-03-06 1978-03-06 Infomration recording disc

Publications (1)

Publication Number Publication Date
JPS54118205A true JPS54118205A (en) 1979-09-13

Family

ID=12174980

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2576778A Pending JPS54118205A (en) 1978-03-06 1978-03-06 Infomration recording disc

Country Status (1)

Country Link
JP (1) JPS54118205A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597093A (en) * 1982-07-06 1984-01-14 Sanyo Electric Co Ltd Optical recording medium
JPS5979444A (en) * 1982-10-28 1984-05-08 Sharp Corp Optical memory element
JPS62266746A (en) * 1986-05-14 1987-11-19 Teijin Ltd Optical recording medium and its production

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597093A (en) * 1982-07-06 1984-01-14 Sanyo Electric Co Ltd Optical recording medium
JPH0376237B2 (en) * 1982-07-06 1991-12-04 Sanyo Electric Co
JPS5979444A (en) * 1982-10-28 1984-05-08 Sharp Corp Optical memory element
JPS62266746A (en) * 1986-05-14 1987-11-19 Teijin Ltd Optical recording medium and its production

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