FI890425A - METHOD FOR OPTICAL DATALAGRING AND MATERIAL FOR DENNA. - Google Patents

METHOD FOR OPTICAL DATALAGRING AND MATERIAL FOR DENNA. Download PDF

Info

Publication number
FI890425A
FI890425A FI890425A FI890425A FI890425A FI 890425 A FI890425 A FI 890425A FI 890425 A FI890425 A FI 890425A FI 890425 A FI890425 A FI 890425A FI 890425 A FI890425 A FI 890425A
Authority
FI
Finland
Prior art keywords
datalagring
denna
optical
optical datalagring
Prior art date
Application number
FI890425A
Other languages
Finnish (fi)
Other versions
FI890425A0 (en
Inventor
Stephen Charles Wallace
Original Assignee
Traqson 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 Traqson Ltd filed Critical Traqson Ltd
Publication of FI890425A0 publication Critical patent/FI890425A0/en
Publication of FI890425A publication Critical patent/FI890425A/en

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
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0055—Erasing
    • G11B7/00552—Erasing involving colour change media
    • 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
FI890425A 1987-05-29 1989-01-27 METHOD FOR OPTICAL DATALAGRING AND MATERIAL FOR DENNA. FI890425A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878712687A GB8712687D0 (en) 1987-05-29 1987-05-29 Optical data storage
PCT/GB1988/000423 WO1988009549A1 (en) 1987-05-29 1988-05-27 Optical data storage method and materials therefor

Publications (2)

Publication Number Publication Date
FI890425A0 FI890425A0 (en) 1989-01-27
FI890425A true FI890425A (en) 1989-01-27

Family

ID=10618136

Family Applications (1)

Application Number Title Priority Date Filing Date
FI890425A FI890425A (en) 1987-05-29 1989-01-27 METHOD FOR OPTICAL DATALAGRING AND MATERIAL FOR DENNA.

Country Status (7)

Country Link
EP (1) EP0316394A1 (en)
JP (1) JPH01503501A (en)
AU (1) AU1801488A (en)
DK (1) DK35089D0 (en)
FI (1) FI890425A (en)
GB (1) GB8712687D0 (en)
WO (1) WO1988009549A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4950579A (en) * 1988-07-08 1990-08-21 Minnesota Mining And Manufacturing Company Optical disc recording medium having a microstructure-derived inhomogeneity or anisotropy
EP0360466B1 (en) * 1988-09-09 1997-01-29 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and information recording and reproducing method therefor
US5249175A (en) * 1988-09-09 1993-09-28 Matsushita Electric Industrial Co., Ltd. Optical information recording medium and information recording and reproducing method therefor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1600615A (en) * 1977-10-28 1981-10-21 Plessey Co Ltd Photochromic compounds
NL8401995A (en) * 1984-06-22 1986-01-16 Docdata Bv OPTICAL INFORMATION CARRIER WITH MOSAIC STRUCTURE.

Also Published As

Publication number Publication date
AU1801488A (en) 1988-12-21
GB8712687D0 (en) 1987-07-01
FI890425A0 (en) 1989-01-27
JPH01503501A (en) 1989-11-22
DK35089A (en) 1989-01-27
EP0316394A1 (en) 1989-05-24
WO1988009549A1 (en) 1988-12-01
DK35089D0 (en) 1989-01-27

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Legal Events

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MM Patent lapsed

Owner name: TRAQSON LIMITED