OPTICAL INFORMATION RECORDING MEMBER, RECORDING/ REPRODUCING METHOD AND DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a recording member equipped with guide grooves having a high track density and with address information, and to provide a recording/ reproducing device. SOLUTION: The optical recording member records information signals, through light irradiation on a base plate 5 equipped with rugged guide grooves having a high track density. The address information is formed by intermitting a part of the grooves G2, G3, G4 of the guide grooves; the recording position of the address information is provided in the zones X, Y which are different in the track direction between adjacent tracks; the address signals are detected by the change in reflectivity at the time when the optical beam 1 is passed over a land part; and the information signals are simultaneously recorded or reproduced.