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1. WO2021064405 - DATA STORAGE METHOD AND COMPOSITION

Publication Number WO/2021/064405
Publication Date 08.04.2021
International Application No. PCT/GB2020/052407
International Filing Date 01.10.2020
IPC
G11B 7/004 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
G11B 7/244 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor
24Record carriers characterised by shape, structure or physical properties, or by the selection of the material 
241Record carriers characterised by the selection of the material
242of recording layers
244comprising organic materials only
CPC
C09K 11/06
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
06containing organic luminescent materials
C09K 11/07
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
06containing organic luminescent materials
07having chemically interreactive components, e.g. reactive chemiluminescent compositions
G11B 2007/00457
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0045Recording
00457Two photon recording
G11B 2007/24624
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
24Record carriers characterised by shape, structure or physical properties, or by the selection of the material
241characterised by the selection of the material
242of recording layers
244comprising organic materials only
246containing dyes
24624fluorescent dyes
G11B 7/004
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
G11B 7/0045
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
7Recording 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
004Recording, reproducing or erasing methods; Read, write or erase circuits therefor
0045Recording
Applicants
  • SUMITOMO CHEMICAL CO., LTD [JP]/[JP]
  • CAMBRIDGE DISPLAY TECHNOLOGY LIMITED [GB]/[GB] (MG)
Inventors
  • TARRAN, William
  • BENZIE, Philip
  • LEE, James
  • BOURCET, Florence
Agents
  • GILANI, Anwar
Priority Data
1914173.801.10.2019GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DATA STORAGE METHOD AND COMPOSITION
(FR) PROCÉDÉ ET COMPOSITION DE STOCKAGE DE DONNÉES
Abstract
(EN)
A method of recording data to a layer (101) of a recording medium in which an organic luminescent precursor composition is irradiated with a first light beam (103) and a second light beam (105), the first light beam having a write wavelength for conversion of the organic luminescent precursor composition to an organic luminescent composition and the second light beam having a write inhibition wavelength for inhibiting conversion of the organic luminescent precursor composition to the organic luminescent composition. The second light beam has a central area and a surrounding area; an intensity of the second light beam in the central area being lower than an intensity of the second light beam in the surrounding area. The first light beam extends across the central area and the surrounding area of the second light beam surrounds the first light beam.
(FR)
L'invention concerne un procédé d'enregistrement de données sur une couche (101) d'un support d'enregistrement dans lequel une composition de précurseur luminescent organique est irradiée avec un premier faisceau lumineux (103) et un second faisceau lumineux (105), le premier faisceau lumineux ayant une longueur d'onde d'écriture pour la conversion de la composition de précurseur luminescent organique en une composition luminescente organique et le second faisceau lumineux ayant une longueur d'onde d'inhibition d'écriture pour inhiber la conversion de la composition de précurseur luminescent organique en la composition luminescente organique. Le second faisceau lumineux a une zone centrale et une zone environnante ; une intensité du second faisceau lumineux dans la zone centrale est inférieure à une intensité du second faisceau lumineux dans la zone environnante. Le premier faisceau lumineux s'étend à travers la zone centrale et la zone environnante du second faisceau lumineux entoure le premier faisceau lumineux.
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