JPS5750340A - Optical information recording tape - Google Patents

Optical information recording tape

Info

Publication number
JPS5750340A
JPS5750340A JP55125282A JP12528280A JPS5750340A JP S5750340 A JPS5750340 A JP S5750340A JP 55125282 A JP55125282 A JP 55125282A JP 12528280 A JP12528280 A JP 12528280A JP S5750340 A JPS5750340 A JP S5750340A
Authority
JP
Japan
Prior art keywords
layer
recording
discoloring agent
tape
discolored
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
JP55125282A
Other languages
Japanese (ja)
Inventor
Toshiki Aoi
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 JP55125282A priority Critical patent/JPS5750340A/en
Publication of JPS5750340A publication Critical patent/JPS5750340A/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
    • G11B7/252—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
    • G11B7/257—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 layers having properties involved in recording or reproduction, e.g. optical interference layers or sensitising layers or dielectric layers, which are protecting the recording layers
    • 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
    • G11B7/242—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
    • 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
    • G11B7/2585—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 aluminium

Landscapes

  • Heat Sensitive Colour Forming Recording (AREA)
  • Optical Record Carriers And Manufacture Thereof (AREA)

Abstract

PURPOSE:To display a recorded area of a plastic recording tape, by forming a recording layer on a single surface of the plastic tape plus a layer which is discolored by heat on the other surface respectively or mixing a discoloring agent into the recording layer. CONSTITUTION:A recording layer 3 composed of a mixture of nitrocellulose and carbon is laminated on a plastic tape 1 of polyester, etc. via a reflective layer 2 such as an Al foil. Then a recorded area display layer containing a discoloring agent which discolors by heat is provided on the other side of the tape 1. Otherwise the discoloring agent is dispersed into the layer 3. The layer 2 is not provided in case when the information is reproduced by a transmitting system. A mixture of tannin, etc. and Fe (III), Ni2Co, etc. of stearic acid that is discolored at about 100 deg.C lower than the melting point of the plastics of the layer 3, or crystal violet, etc. is used for the above-mentioned discoloring agent. Thus the area where the writing is carried out by the laser beam is discolored to easily discriminate the recorded area. This can prevent the double recording.
JP55125282A 1980-09-11 1980-09-11 Optical information recording tape Pending JPS5750340A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55125282A JPS5750340A (en) 1980-09-11 1980-09-11 Optical information recording tape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55125282A JPS5750340A (en) 1980-09-11 1980-09-11 Optical information recording tape

Publications (1)

Publication Number Publication Date
JPS5750340A true JPS5750340A (en) 1982-03-24

Family

ID=14906213

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55125282A Pending JPS5750340A (en) 1980-09-11 1980-09-11 Optical information recording tape

Country Status (1)

Country Link
JP (1) JPS5750340A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0230024A2 (en) * 1985-12-20 1987-07-29 Matsushita Electric Industrial Co., Ltd. Optical recording medium having a stabilized recording layer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0230024A2 (en) * 1985-12-20 1987-07-29 Matsushita Electric Industrial Co., Ltd. Optical recording medium having a stabilized recording layer

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