JPS57167150A - Optical recording medium - Google Patents

Optical recording medium

Info

Publication number
JPS57167150A
JPS57167150A JP56051659A JP5165981A JPS57167150A JP S57167150 A JPS57167150 A JP S57167150A JP 56051659 A JP56051659 A JP 56051659A JP 5165981 A JP5165981 A JP 5165981A JP S57167150 A JPS57167150 A JP S57167150A
Authority
JP
Japan
Prior art keywords
layer
recording
semireflexible
laser beam
recording medium
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
JP56051659A
Other languages
Japanese (ja)
Inventor
Shiro Nakagawa
Shigeru Asami
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.)
TDK Corp
Original Assignee
TDK 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 TDK Corp filed Critical TDK Corp
Priority to JP56051659A priority Critical patent/JPS57167150A/en
Publication of JPS57167150A publication Critical patent/JPS57167150A/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
    • G11B7/244—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 organic materials only
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/253—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates
    • G11B7/2531—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of substrates comprising glass
    • 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
    • G11B7/252—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers
    • G11B7/258—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers
    • G11B7/259—Record carriers characterised by shape, structure or physical properties, or by the selection of the material characterised by the selection of the material of layers other than recording layers of reflective layers based on silver

Abstract

PURPOSE:To obtain a recording medium which is less affected by dust and flaws and has the S/N ratio prevented from degradation due to the degradation and the damage of a semireflexible layer. CONSTITUTION:A recording layer 5 where an irradiated part is burnt down by a recording laser beam to record information nonreversibly and a semireflexible layer 11 which is brought into contact with the recroding layer 5 and has 20- 50% reflection factor for the laser beam and has an irradiated part burnt down by the recording laser beam are provided on a base layer 10 transparent for the wavelength of the lase beam. For example, the recording layer 12 consisting of the mixture of nitrocellulose and carbon black, or the like is formed on the base layer 10 consisting of glass or the like through the semireflexible layer 11 consisting of silver, copper, or the like. A strong lase beam is irradiated from the side of the base layer 10 through an optical head 13 to form minute holes piercing the semireflexible layer 11, therby recording information.
JP56051659A 1981-04-08 1981-04-08 Optical recording medium Pending JPS57167150A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56051659A JPS57167150A (en) 1981-04-08 1981-04-08 Optical recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56051659A JPS57167150A (en) 1981-04-08 1981-04-08 Optical recording medium

Publications (1)

Publication Number Publication Date
JPS57167150A true JPS57167150A (en) 1982-10-14

Family

ID=12892998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56051659A Pending JPS57167150A (en) 1981-04-08 1981-04-08 Optical recording medium

Country Status (1)

Country Link
JP (1) JPS57167150A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6025035A (en) * 1983-06-27 1985-02-07 オプテイカル・デイスク・コ−ポレイシヨン Optical recording medium
JP2003535422A (en) * 2000-05-30 2003-11-25 コミツサリア タ レネルジー アトミーク Irreversible optical recording medium

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6025035A (en) * 1983-06-27 1985-02-07 オプテイカル・デイスク・コ−ポレイシヨン Optical recording medium
JP2003535422A (en) * 2000-05-30 2003-11-25 コミツサリア タ レネルジー アトミーク Irreversible optical recording medium

Similar Documents

Publication Publication Date Title
ATE36617T1 (en) OPTICAL RECORDER.
KR850001598A (en) Information recording medium
ES473697A1 (en) Information-recording element having a dye-containing auxiliary layer
JPS5437740A (en) Laser beam recording media
JPS57208299A (en) Recording method of optical information
JPS5220821A (en) Recording material
JPS5342028A (en) Laser beam recording method
JPS5352104A (en) Production of disc recording disc
JPS57167150A (en) Optical recording medium
AU545917B2 (en) Optical recording medium and method for its formation
JPS52151025A (en) Method of recording image with laser beam
JPS52151024A (en) Method of recording image with laser beam
JPS5763291A (en) Optical recording medium
JPS5437739A (en) Laser beam recording media
JPS52143838A (en) Recording method by laser beam
JPS5782095A (en) Optical information recording medium
JPS5350707A (en) Optical record reproducing apparatus
JPS5348704A (en) Optical signal regenerator
JPS5548836A (en) Signal recording board and recording and reproducing method
JPS5374403A (en) Optical imformation recorder
JPS5299804A (en) Production of orginal disc for information recording medium
JPS5270826A (en) Information recording method
JPS5237007A (en) Optical recording reproducing equipment
JPS53143205A (en) Deffect inspecting method of magnetic disc media
JPS5320941A (en) Light recorder