JPS5441703A - Information recording plate - Google Patents

Information recording plate

Info

Publication number
JPS5441703A
JPS5441703A JP10781577A JP10781577A JPS5441703A JP S5441703 A JPS5441703 A JP S5441703A JP 10781577 A JP10781577 A JP 10781577A JP 10781577 A JP10781577 A JP 10781577A JP S5441703 A JPS5441703 A JP S5441703A
Authority
JP
Japan
Prior art keywords
information recording
information
recording plate
transparent substrate
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
JP10781577A
Other languages
Japanese (ja)
Other versions
JPS6118263B2 (en
Inventor
Yoshisada Oshida
Seiji Yonezawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP10781577A priority Critical patent/JPS5441703A/en
Publication of JPS5441703A publication Critical patent/JPS5441703A/en
Publication of JPS6118263B2 publication Critical patent/JPS6118263B2/ja
Granted 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)
  • Photoreceptors In Electrophotography (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To prevent drop-out of information owing to deposition of dust, etc. by laminating a light shielding type information recording medium and a protecting film on a transparent substrate of more than 0.2mm in thickness to form an information recording plate and opening holes in the recording medium from the transparent substrate side by the use of a laser beam thereby recording the information.
JP10781577A 1977-09-09 1977-09-09 Information recording plate Granted JPS5441703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10781577A JPS5441703A (en) 1977-09-09 1977-09-09 Information recording plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10781577A JPS5441703A (en) 1977-09-09 1977-09-09 Information recording plate

Publications (2)

Publication Number Publication Date
JPS5441703A true JPS5441703A (en) 1979-04-03
JPS6118263B2 JPS6118263B2 (en) 1986-05-12

Family

ID=14468726

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10781577A Granted JPS5441703A (en) 1977-09-09 1977-09-09 Information recording plate

Country Status (1)

Country Link
JP (1) JPS5441703A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56501144A (en) * 1979-09-21 1981-08-13
JPS5766539A (en) * 1980-10-09 1982-04-22 Toshiba Corp Optical disk
JPS5766538A (en) * 1980-10-08 1982-04-22 Toshiba Corp Information storage medium
JPS57169996A (en) * 1981-04-09 1982-10-19 Sharp Corp Magnetooptic storage element
JPS60182534A (en) * 1984-03-01 1985-09-18 Matsushita Electric Ind Co Ltd Applying method for optical disk protecting film
JPH03205629A (en) * 1990-11-27 1991-09-09 Toshiba Corp Production of optical information recording medium
JP2002050043A (en) * 2000-05-26 2002-02-15 Tosoh Corp Surface reproduction type optical recording medium

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56501144A (en) * 1979-09-21 1981-08-13
JPS5766538A (en) * 1980-10-08 1982-04-22 Toshiba Corp Information storage medium
JPS6318252B2 (en) * 1980-10-08 1988-04-18 Tokyo Shibaura Electric Co
JPS5766539A (en) * 1980-10-09 1982-04-22 Toshiba Corp Optical disk
JPS57169996A (en) * 1981-04-09 1982-10-19 Sharp Corp Magnetooptic storage element
JPS6227458B2 (en) * 1981-04-09 1987-06-15 Sharp Kk
JPS60182534A (en) * 1984-03-01 1985-09-18 Matsushita Electric Ind Co Ltd Applying method for optical disk protecting film
JPH0670861B2 (en) * 1984-03-01 1994-09-07 松下電器産業株式会社 Optical disc protective film coating method and disc
JPH03205629A (en) * 1990-11-27 1991-09-09 Toshiba Corp Production of optical information recording medium
JP2002050043A (en) * 2000-05-26 2002-02-15 Tosoh Corp Surface reproduction type optical recording medium

Also Published As

Publication number Publication date
JPS6118263B2 (en) 1986-05-12

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