JPS56145528A - Recording method - Google Patents

Recording method

Info

Publication number
JPS56145528A
JPS56145528A JP4932480A JP4932480A JPS56145528A JP S56145528 A JPS56145528 A JP S56145528A JP 4932480 A JP4932480 A JP 4932480A JP 4932480 A JP4932480 A JP 4932480A JP S56145528 A JPS56145528 A JP S56145528A
Authority
JP
Japan
Prior art keywords
recording
signals
laser light
recording medium
recording layer
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
JP4932480A
Other languages
Japanese (ja)
Inventor
Kenichi Sawazaki
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 JP4932480A priority Critical patent/JPS56145528A/en
Publication of JPS56145528A publication Critical patent/JPS56145528A/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

Landscapes

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

Abstract

PURPOSE:To make high-density recording by high frequencies and high track densities possible by irradiating the laser light modulated by recording signals on a recording medium consisting of a thermofoamable material thereby forming rugged patterns. CONSTITUTION:A recording medium 1 formed with a recording layer 3 consisting of a thermofoamable material on a disc-shaped substrate 2 is run in an arrow direction. Next, the laser beams 5 outputted from a laser oscillator 4 is conducted to a light modulator 6 to which digitized recording signals 7 are being supplied. After the laser light 8 modulated by the signals 7 is outputted, it is condensed by a lens 9, and is irradiated to said recording layer 3, thereby allowing the thermofoamable material of the areas strongly irradiated with the laser light 8 to foam and forming the rugged patterns 10 corresponding to the signals 7 in the recording layer 3. This recording medium is suited for reproduction of video discs, tapes, etc.
JP4932480A 1980-04-15 1980-04-15 Recording method Pending JPS56145528A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4932480A JPS56145528A (en) 1980-04-15 1980-04-15 Recording method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4932480A JPS56145528A (en) 1980-04-15 1980-04-15 Recording method

Publications (1)

Publication Number Publication Date
JPS56145528A true JPS56145528A (en) 1981-11-12

Family

ID=12827792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4932480A Pending JPS56145528A (en) 1980-04-15 1980-04-15 Recording method

Country Status (1)

Country Link
JP (1) JPS56145528A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58187397A (en) * 1982-04-08 1983-11-01 ガオ・ゲゼルシヤフト・フユア・アウトマチオン・ウント・オルガニザチオン・ミツト・ベシユレンクテル・ハフツング Multilayer type identification card and its manufacture
JPH056570A (en) * 1991-12-06 1993-01-14 Sony Corp Information recording medium
JP2013188966A (en) * 2012-03-14 2013-09-26 Dainippon Printing Co Ltd Card and method for manufacturing card

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58187397A (en) * 1982-04-08 1983-11-01 ガオ・ゲゼルシヤフト・フユア・アウトマチオン・ウント・オルガニザチオン・ミツト・ベシユレンクテル・ハフツング Multilayer type identification card and its manufacture
JPH03205196A (en) * 1982-04-08 1991-09-06 Gao Ges Autom Org Mbh Multi-layer certification card
JPH056570A (en) * 1991-12-06 1993-01-14 Sony Corp Information recording medium
JP2013188966A (en) * 2012-03-14 2013-09-26 Dainippon Printing Co Ltd Card and method for manufacturing card

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