JPS5794944A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS5794944A
JPS5794944A JP55171033A JP17103380A JPS5794944A JP S5794944 A JPS5794944 A JP S5794944A JP 55171033 A JP55171033 A JP 55171033A JP 17103380 A JP17103380 A JP 17103380A JP S5794944 A JPS5794944 A JP S5794944A
Authority
JP
Japan
Prior art keywords
alloy
fine grains
semiconductor
metal
inorganic material
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
JP55171033A
Other languages
Japanese (ja)
Inventor
Shigeru Hirono
Yasushi Maeda
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP55171033A priority Critical patent/JPS5794944A/en
Publication of JPS5794944A publication Critical patent/JPS5794944A/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
    • G11B7/251—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 dispersed in an organic matrix

Abstract

PURPOSE:To improve sensitivity by using a thin film, made of fine grains of a metal, an alloy, a semiconductor, and an inorganic material, as a recording layer. CONSTITUTION:Spherical fine grains 21 of an alloy which has an about 200Angstrom diameter and a 9:1 proportion of Fe to Ni are formed by evaporating an Fe- Ni ingot in 20Torr gaseous Ar and mixed with a binder 22 by 40wt%; and the mixture is kneaded by a ball mill for 200hr, and the obtained paint is applied over a substrate 23 to an about 1mum thickness. The fine grains of a metal, an alloy, a semiconductor, and an inorganic material are more active in reaction and much higher in light absorptivity than them in a bulky state, so higher recording sensitivity is obtained.
JP55171033A 1980-12-05 1980-12-05 Optical recording medium Pending JPS5794944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55171033A JPS5794944A (en) 1980-12-05 1980-12-05 Optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55171033A JPS5794944A (en) 1980-12-05 1980-12-05 Optical recording medium

Publications (1)

Publication Number Publication Date
JPS5794944A true JPS5794944A (en) 1982-06-12

Family

ID=15915835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55171033A Pending JPS5794944A (en) 1980-12-05 1980-12-05 Optical recording medium

Country Status (1)

Country Link
JP (1) JPS5794944A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168948A (en) * 1983-03-16 1984-09-22 Konishiroku Photo Ind Co Ltd Optical information recording medium
JPS6199952A (en) * 1984-10-18 1986-05-19 Res Dev Corp Of Japan Optical information recording medium and its production
JPS62217436A (en) * 1986-03-18 1987-09-24 Fuji Electric Co Ltd Thin film for optical recording
US4757492A (en) * 1984-12-26 1988-07-12 Kabushiki Kaisha Toshiba Method for recording and reproducing information on or from an optical recording medium
US7313080B2 (en) 2002-04-08 2007-12-25 Matsushita Electric Industrial Co., Ltd. Information recording medium and its production method, and optical information recording reproducing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220842A (en) * 1975-08-09 1977-02-17 Canon Inc Recording medium

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5220842A (en) * 1975-08-09 1977-02-17 Canon Inc Recording medium

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59168948A (en) * 1983-03-16 1984-09-22 Konishiroku Photo Ind Co Ltd Optical information recording medium
JPH053396B2 (en) * 1983-03-16 1993-01-14 Konishiroku Photo Ind
JPS6199952A (en) * 1984-10-18 1986-05-19 Res Dev Corp Of Japan Optical information recording medium and its production
JPH0375946B2 (en) * 1984-10-18 1991-12-03 Shingijutsu Jigyodan
US4757492A (en) * 1984-12-26 1988-07-12 Kabushiki Kaisha Toshiba Method for recording and reproducing information on or from an optical recording medium
JPS62217436A (en) * 1986-03-18 1987-09-24 Fuji Electric Co Ltd Thin film for optical recording
US7313080B2 (en) 2002-04-08 2007-12-25 Matsushita Electric Industrial Co., Ltd. Information recording medium and its production method, and optical information recording reproducing apparatus

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