JPS56134329A - Optical disk structure - Google Patents

Optical disk structure

Info

Publication number
JPS56134329A
JPS56134329A JP3583580A JP3583580A JPS56134329A JP S56134329 A JPS56134329 A JP S56134329A JP 3583580 A JP3583580 A JP 3583580A JP 3583580 A JP3583580 A JP 3583580A JP S56134329 A JPS56134329 A JP S56134329A
Authority
JP
Japan
Prior art keywords
recording layer
substrate
light
sensitivity
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
JP3583580A
Other languages
Japanese (ja)
Inventor
Hideo Ando
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3583580A priority Critical patent/JPS56134329A/en
Publication of JPS56134329A publication Critical patent/JPS56134329A/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
    • 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
    • G11B2007/24302—Metals or metalloids
    • G11B2007/24316—Metals or metalloids group 16 elements (i.e. chalcogenides, Se, Te)

Landscapes

  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To increase the sensitivity of a recording layer in case of write by a laser beam, by providing a light absorption layer for positively absorbing a light beam which has passed through a recording layer. CONSTITUTION:The substrate 1 is formed by a coloring matter having a light absorptive property, for instance, epoxy resin which has been made to contain carbon black of 5-10% and has been colored in black, and it is used as a light absorption layer, too. Also, a recording layer 3 is formed by vacuum-evaporating tellurium of 500Angstrom or so on the substrate 1. When a laser beam 4 is irradiated on the optical disk, a light beam which has penetrated the recording layer 3 is absorbed by the substrate which serves as the light absorption layer 2, as well, a flow to the substrate 1 side from the recording layer 3 which has become a high temperature by heating at the part itself which has absorbed said light beam is reduced, and the pit 5 is formed exactly by increasing the sensitivity by said portion. According to such a constitution, it is possible to increase the sensitivity of a recording layer at the time of write by a laser beam.
JP3583580A 1980-03-21 1980-03-21 Optical disk structure Pending JPS56134329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3583580A JPS56134329A (en) 1980-03-21 1980-03-21 Optical disk structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3583580A JPS56134329A (en) 1980-03-21 1980-03-21 Optical disk structure

Publications (1)

Publication Number Publication Date
JPS56134329A true JPS56134329A (en) 1981-10-21

Family

ID=12453023

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3583580A Pending JPS56134329A (en) 1980-03-21 1980-03-21 Optical disk structure

Country Status (1)

Country Link
JP (1) JPS56134329A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922248A (en) * 1982-07-28 1984-02-04 Sumitomo Bakelite Co Ltd Plastic optical disc
JPS6099697A (en) * 1983-11-07 1985-06-03 Ricoh Co Ltd Optical recording medium
JPH03100936A (en) * 1989-09-14 1991-04-25 Ricoh Co Ltd Optical information recording medium

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5922248A (en) * 1982-07-28 1984-02-04 Sumitomo Bakelite Co Ltd Plastic optical disc
JPS6099697A (en) * 1983-11-07 1985-06-03 Ricoh Co Ltd Optical recording medium
JPH0472713B2 (en) * 1983-11-07 1992-11-18 Ricoh Kk
JPH03100936A (en) * 1989-09-14 1991-04-25 Ricoh Co Ltd Optical information recording medium

Similar Documents

Publication Publication Date Title
MX155195A (en) IMPROVEMENTS IN RECORDING DEVICE USING LIGHT RADIATION MEDIA
JPS57165292A (en) Optical information recording medium
ATE112649T1 (en) OPTICAL INFORMATION RECORDING MEDIA.
JPS56145530A (en) Optical information recording and erasing method
JPS5674843A (en) Photomagnetic recording medium
JPS56134329A (en) Optical disk structure
JPS53133039A (en) Recording method
JPS5766541A (en) Optical disk
JPS5619790A (en) Recording medium
JPS5724039A (en) Information recording medium
JPS5760546A (en) Optical recording medium
JPS5646789A (en) Laser recording ribbon
JPS5774834A (en) Optical information recording system
JPS56155940A (en) Optically recording medium
JPS5718031A (en) Optical information recording and reproducing method
JPS5794943A (en) Laser beam recording medium
JPS57152549A (en) Optical recorder
JPS5548836A (en) Signal recording board and recording and reproducing method
JPS5593537A (en) Optical recording device
JPS57195336A (en) Recording and record reading method and recorded body
JPS5677933A (en) Heat mode recording medium and recording substance
JPS5466849A (en) Recording material
JPS57212628A (en) Method and device for information recording
JPS57159692A (en) Information recording medium
JPS573238A (en) Medium for optical memory