JPS57117140A - Recording, erase and readout device for information - Google Patents

Recording, erase and readout device for information

Info

Publication number
JPS57117140A
JPS57117140A JP56001882A JP188281A JPS57117140A JP S57117140 A JPS57117140 A JP S57117140A JP 56001882 A JP56001882 A JP 56001882A JP 188281 A JP188281 A JP 188281A JP S57117140 A JPS57117140 A JP S57117140A
Authority
JP
Japan
Prior art keywords
information recording
recording body
cooled
heated
thermoplastic resin
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
JP56001882A
Other languages
Japanese (ja)
Inventor
Masaaki Umehara
Masaaki Nomura
Makoto Kunikane
Sakae Shimizu
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP56001882A priority Critical patent/JPS57117140A/en
Publication of JPS57117140A publication Critical patent/JPS57117140A/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
    • G11B7/244—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
    • G11B7/245—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 containing a polymeric component
    • 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
    • G11B7/253—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
    • G11B7/2533—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 resins

Landscapes

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

Abstract

PURPOSE:To achieve an information recording body excellent in recording, good stability, easy manufacture and low cost, by forming the information recording medium with a thermoplastic resin which becomes transparent or opaque uniformly through heating and cooling. CONSTITUTION:On a base member 2 made of disc shape glass or plastic, a thin film made of heat sensing material 3 having a thickness of 5-50mum is formed to constitute an information recording body 1. The material 3 is mixture of a matrix member with an organic low molecular substance in the weight ratio of 3:1-16:1. As the matrix member, homopolymer or copolymer of polyester, polyamide or other thermoplastic resin is used, and as the organic low molecular substance, saturated or unsaturated mono or dicarboxylate, or its derivative is used. This member 3 becomes opaque when heated or cooled at two transit points t1, t2 (t1<t2) or more through the radiation of light beam, and becomes transparent when heated and cooled at a temperature between the t1 and t2. Thus, the information recording body of excellent recording, stable operation and easy manufacture and low cost can be achieved.
JP56001882A 1981-01-09 1981-01-09 Recording, erase and readout device for information Pending JPS57117140A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56001882A JPS57117140A (en) 1981-01-09 1981-01-09 Recording, erase and readout device for information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56001882A JPS57117140A (en) 1981-01-09 1981-01-09 Recording, erase and readout device for information

Publications (1)

Publication Number Publication Date
JPS57117140A true JPS57117140A (en) 1982-07-21

Family

ID=11513930

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56001882A Pending JPS57117140A (en) 1981-01-09 1981-01-09 Recording, erase and readout device for information

Country Status (1)

Country Link
JP (1) JPS57117140A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6142675A (en) * 1984-08-06 1986-03-01 Trio Kenwood Corp Matrix type storage substrate
JPS6338927A (en) * 1986-08-05 1988-02-19 Ricoh Co Ltd Overhead projector
JPS63167341A (en) * 1986-12-28 1988-07-11 Ricoh Co Ltd Overhead projector device
JPS6419333A (en) * 1987-07-15 1989-01-23 Ricoh Kk Color overhead projector device
JPH02139286A (en) * 1988-08-22 1990-05-29 Ricoh Co Ltd Recording and erasing method
JPH02289924A (en) * 1989-04-28 1990-11-29 Ricoh Co Ltd Method for reproducing recording
US5231505A (en) * 1990-06-14 1993-07-27 Mitsubishi Denki K.K. Rewritable recording display apparatus and method of erasing record
US5274460A (en) * 1990-07-04 1993-12-28 Mitsubishi Denki Kabushiki Kaisha Method of and apparatus for rewritable recording and erasing and rewritable recording film
US5537138A (en) * 1992-02-07 1996-07-16 Mitsubishi Denki Kabushiki Kaisha Recording and erasing system for themoreversible recording medium

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6142675A (en) * 1984-08-06 1986-03-01 Trio Kenwood Corp Matrix type storage substrate
JPH0452790B2 (en) * 1984-08-06 1992-08-24 Kenwood Corp
JPS6338927A (en) * 1986-08-05 1988-02-19 Ricoh Co Ltd Overhead projector
JPS63167341A (en) * 1986-12-28 1988-07-11 Ricoh Co Ltd Overhead projector device
JPS6419333A (en) * 1987-07-15 1989-01-23 Ricoh Kk Color overhead projector device
JPH02139286A (en) * 1988-08-22 1990-05-29 Ricoh Co Ltd Recording and erasing method
JPH02139287A (en) * 1988-08-22 1990-05-29 Ricoh Co Ltd Recording method
JPH02289924A (en) * 1989-04-28 1990-11-29 Ricoh Co Ltd Method for reproducing recording
US5231505A (en) * 1990-06-14 1993-07-27 Mitsubishi Denki K.K. Rewritable recording display apparatus and method of erasing record
US5274460A (en) * 1990-07-04 1993-12-28 Mitsubishi Denki Kabushiki Kaisha Method of and apparatus for rewritable recording and erasing and rewritable recording film
US5537138A (en) * 1992-02-07 1996-07-16 Mitsubishi Denki Kabushiki Kaisha Recording and erasing system for themoreversible recording medium

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