JPS5774842A - Optical information recording disk - Google Patents

Optical information recording disk

Info

Publication number
JPS5774842A
JPS5774842A JP55149578A JP14957880A JPS5774842A JP S5774842 A JPS5774842 A JP S5774842A JP 55149578 A JP55149578 A JP 55149578A JP 14957880 A JP14957880 A JP 14957880A JP S5774842 A JPS5774842 A JP S5774842A
Authority
JP
Japan
Prior art keywords
information recording
optical information
metallic film
substrate
recording disk
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
JP55149578A
Other languages
Japanese (ja)
Other versions
JPS6260737B2 (en
Inventor
Kazuo Mori
Kuniaki Sakai
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 JP55149578A priority Critical patent/JPS5774842A/en
Publication of JPS5774842A publication Critical patent/JPS5774842A/en
Publication of JPS6260737B2 publication Critical patent/JPS6260737B2/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

Landscapes

  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To obtain an optical information recording disk which is large in strength and convenient to carry, by use of a thin substrate, by forming a holding frame on the circumferential margin of an optical information recording carrier obtained by forming a metallic film on a substrate, and installing a protective member at intervals with the metallic film inside. CONSTITUTION:A metallic film 2 is vapor-deposited on a glass substrate 1 which is thinner than usual, and an inside circumference holding frame 10 is fitted into a center hole. Also, to the circumferential margin of the substrate 1, an outside circumference holding frame 11 is installed, projecting parts 10a, 11a of both the holding frames 10, 11 are made spacers, a protective plate 13 made of plastic, etc. so as to be opposed to said frames, with the metallic film 2 inside, and inert gas such as gaseous nitrogen, etc. is put into a space 12 which is sealed up tightly. When recording in this optical information recording plate, a laser beam 6 is condensed through the glass substrate 1 onto the metallic film 2 through an optical system 7 and a lens 8. In this way, it is possible to obtain an optical information recording disk which is large in strength and convenient to carry, by use of a thin substrate.
JP55149578A 1980-10-24 1980-10-24 Optical information recording disk Granted JPS5774842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55149578A JPS5774842A (en) 1980-10-24 1980-10-24 Optical information recording disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55149578A JPS5774842A (en) 1980-10-24 1980-10-24 Optical information recording disk

Publications (2)

Publication Number Publication Date
JPS5774842A true JPS5774842A (en) 1982-05-11
JPS6260737B2 JPS6260737B2 (en) 1987-12-17

Family

ID=15478252

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55149578A Granted JPS5774842A (en) 1980-10-24 1980-10-24 Optical information recording disk

Country Status (1)

Country Link
JP (1) JPS5774842A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910135U (en) * 1982-07-06 1984-01-23 三菱電機株式会社 optical disc
FR2559607A1 (en) * 1984-02-14 1985-08-16 Philips Nv MEMORY DISK OPTICALLY READABLE
FR2559608A1 (en) * 1984-02-14 1985-08-16 Philips Nv OPTICALLY READABLE MEMORY DISC
EP0254749A1 (en) * 1986-02-07 1988-02-03 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical memorizing device
EP0256143A1 (en) * 1986-02-07 1988-02-24 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Method of erasing information
EP0258461A1 (en) * 1986-02-07 1988-03-09 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical information carrier and method for erasing the information of the same
EP0258459A1 (en) * 1986-02-07 1988-03-09 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical information medium
EP0260327A1 (en) * 1986-02-07 1988-03-23 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical memorization device
US6066437A (en) * 1996-10-11 2000-05-23 Schreiner Etiketten Und Selbstklebetechnik Gmbh & Co. Film which can be lettered using a laser beam

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5496002A (en) * 1978-01-13 1979-07-30 Hitachi Ltd Information recording plate

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5496002A (en) * 1978-01-13 1979-07-30 Hitachi Ltd Information recording plate

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910135U (en) * 1982-07-06 1984-01-23 三菱電機株式会社 optical disc
FR2559607A1 (en) * 1984-02-14 1985-08-16 Philips Nv MEMORY DISK OPTICALLY READABLE
FR2559608A1 (en) * 1984-02-14 1985-08-16 Philips Nv OPTICALLY READABLE MEMORY DISC
EP0254749A1 (en) * 1986-02-07 1988-02-03 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical memorizing device
EP0256143A1 (en) * 1986-02-07 1988-02-24 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Method of erasing information
EP0258461A1 (en) * 1986-02-07 1988-03-09 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical information carrier and method for erasing the information of the same
EP0258459A1 (en) * 1986-02-07 1988-03-09 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical information medium
EP0260327A1 (en) * 1986-02-07 1988-03-23 Institut Problem Modelirovania V Energetike Akademii Nauk Ukrainskoi Ssr Optical memorization device
US6066437A (en) * 1996-10-11 2000-05-23 Schreiner Etiketten Und Selbstklebetechnik Gmbh & Co. Film which can be lettered using a laser beam

Also Published As

Publication number Publication date
JPS6260737B2 (en) 1987-12-17

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