Owner MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventors KAWAGUCHI, Yuuko; TOMIYAMA, Morio

Pub. Number AU-A-2003255002

PCT Number PCT/JP03/10243

PCT Pub. Number WO2004/025630

Priority 2002/268535 13.09.02 JP

Filing date 12 August 2003

Wipo publication date 30 April 2004

G11B 007/007 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - Arrangement of the information on the record carrier, e.g. form of tracks

G11B 007/24 Recording 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 characterised by the selection of the material or by the structure or form

G11B 007/26 Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power - Apparatus or processes specially adapted for the manufacture of record carriers