JPS57191843A - Optical recording disk - Google Patents

Optical recording disk

Info

Publication number
JPS57191843A
JPS57191843A JP56077100A JP7710081A JPS57191843A JP S57191843 A JPS57191843 A JP S57191843A JP 56077100 A JP56077100 A JP 56077100A JP 7710081 A JP7710081 A JP 7710081A JP S57191843 A JPS57191843 A JP S57191843A
Authority
JP
Japan
Prior art keywords
recording
thin film
film layer
substrate
guide signal
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
JP56077100A
Other languages
English (en)
Japanese (ja)
Other versions
JPS634253B2 (enrdf_load_stackoverflow
Inventor
Toshihiko Takagi
Yoshihide Arakawa
Yoshiji Suzuki
Tsutomu Hara
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.)
Hamamatsu TV Co Ltd
Nippon Columbia Co Ltd
Original Assignee
Hamamatsu TV Co Ltd
Nippon Columbia 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 Hamamatsu TV Co Ltd, Nippon Columbia Co Ltd filed Critical Hamamatsu TV Co Ltd
Priority to JP56077100A priority Critical patent/JPS57191843A/ja
Priority to US06/313,764 priority patent/US4519064A/en
Priority to DE19813142532 priority patent/DE3142532A1/de
Publication of JPS57191843A publication Critical patent/JPS57191843A/ja
Publication of JPS634253B2 publication Critical patent/JPS634253B2/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
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)
JP56077100A 1980-10-27 1981-05-21 Optical recording disk Granted JPS57191843A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP56077100A JPS57191843A (en) 1981-05-21 1981-05-21 Optical recording disk
US06/313,764 US4519064A (en) 1980-10-27 1981-10-22 Optical record disc
DE19813142532 DE3142532A1 (de) 1980-10-27 1981-10-27 Optische aufzeichnungplatte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56077100A JPS57191843A (en) 1981-05-21 1981-05-21 Optical recording disk

Publications (2)

Publication Number Publication Date
JPS57191843A true JPS57191843A (en) 1982-11-25
JPS634253B2 JPS634253B2 (enrdf_load_stackoverflow) 1988-01-28

Family

ID=13624363

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56077100A Granted JPS57191843A (en) 1980-10-27 1981-05-21 Optical recording disk

Country Status (1)

Country Link
JP (1) JPS57191843A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPS634253B2 (enrdf_load_stackoverflow) 1988-01-28

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