JPS57150149A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS57150149A
JPS57150149A JP56033743A JP3374381A JPS57150149A JP S57150149 A JPS57150149 A JP S57150149A JP 56033743 A JP56033743 A JP 56033743A JP 3374381 A JP3374381 A JP 3374381A JP S57150149 A JPS57150149 A JP S57150149A
Authority
JP
Japan
Prior art keywords
recording layer
optical recording
recording medium
flat surface
laser beam
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
JP56033743A
Other languages
Japanese (ja)
Inventor
Itaru Shibata
Koichi Ogawa
Shigeru Arai
Akira Minami
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 JP56033743A priority Critical patent/JPS57150149A/en
Publication of JPS57150149A publication Critical patent/JPS57150149A/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
    • G11B7/241—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material
    • G11B7/242—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers
    • G11B7/243—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of recording layers comprising inorganic materials only, e.g. ablative layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To prevent reproducing signals from being deteriorated, by constituting an optical recording medium used for an optical data system with an optical recording layer having porous photoreflecting substances. CONSTITUTION:A recording laser beam A melts metal or a metallic oxide on a recording layer 1 to be flowed into air gaps 2 and the molten material is not swelled on the flat surface. Thus, since the reflection of a reproducing laser beam (a) is not disturbed on the flat surface, the beam is reflected as shown in the arrow (b), and the beam is irregularly reflected in a pit 3 to be a weak reflecting light (c). Further, it is favorable that a sintered metal or its compound forming the recording layer 1 is bonded on the major plane opposing to a substrate 5 and a protective film 6 to keep the shape of the sintered metal and to prevent oxidation.
JP56033743A 1981-03-11 1981-03-11 Optical recording medium Pending JPS57150149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56033743A JPS57150149A (en) 1981-03-11 1981-03-11 Optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56033743A JPS57150149A (en) 1981-03-11 1981-03-11 Optical recording medium

Publications (1)

Publication Number Publication Date
JPS57150149A true JPS57150149A (en) 1982-09-16

Family

ID=12394888

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56033743A Pending JPS57150149A (en) 1981-03-11 1981-03-11 Optical recording medium

Country Status (1)

Country Link
JP (1) JPS57150149A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004748A1 (en) * 1984-04-06 1985-10-24 American Telephone & Telegraph Company Optical information storage
JPS62246786A (en) * 1986-04-21 1987-10-27 Canon Inc Optical recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004748A1 (en) * 1984-04-06 1985-10-24 American Telephone & Telegraph Company Optical information storage
JPS62246786A (en) * 1986-04-21 1987-10-27 Canon Inc Optical recording medium

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