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Patent Searching and Data


Title:
INFORMATION RECORDING MEDIUM, METHOD OF RECORDING AND REGENERATION THEREWITH AND INFORMATION RECORDING REGENERATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2004/104696
Kind Code:
A1
Abstract:
An information recording medium comprising a recording layer wherein when recording radiation is focused on the recording layer, biphoton absorption occurs so as to attain recording of information on the recording layer. The recording layer (211,212) comprises a photosensitive polymer containing an acrylate or methacrylate-containing main chain having first and second side chains branched from the main chain, wherein the first side chain upon absorption of recording radiation undergoes a cis-trans isomerization reaction while the second side chain has the property of, upon isomerization reaction of the first side chain, being oriented in substantially the same direction as that of the first side chain.

Inventors:
NISHINO SEIJI
SHIONO TERUHIRO
YAMAMOTO HIROAKI
ITOH TATSUO
Application Number:
PCT/JP2004/007433
Publication Date:
December 02, 2004
Filing Date:
May 25, 2004
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
NISHINO SEIJI
SHIONO TERUHIRO
YAMAMOTO HIROAKI
ITOH TATSUO
International Classes:
G11B7/245; G03C1/73; G11B7/0045; G11B7/24038; (IPC1-7): G03C1/73; G11B7/24; G11B7/135; G11B7/004
Foreign References:
JP2001006208A2001-01-12
JPH08109226A1996-04-30
JP2003030851A2003-01-31
JP2001522119A2001-11-13
JP2003020469A2003-01-24
JP2004059897A2004-02-26
Other References:
TSUJIOKA T.: "Nikoshi kyushu ni yoru kakikaegata memory", O PLUS E, vol. 20, no. 9, 5 September 1998 (1998-09-05), pages 1033 - 1038, XP002983047
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (OAP Tower 8-30 Tenmabashi 1-chome, Kita-k, Osaka-shi Osaka, JP)
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