| 摘要 |
An optical disc wherein recording can be performed on a label plane even only by an optical disc recording/reproducing device using a direct-current motor as a power supply of an optical pickup in a traverse direction. The optical disc is provided with a visible information recording layer ( 207 ), which can record visible information by changing a physical structure by irradiation light of the optical pickup, and a radius position information recording part ( 201 ). Therefore, even when an optical disc recording/reproducing device using a direct-current motor as a power supply of the optical pickup in the traverse direction, the contents of the radius position information recording part ( 201 ) are read and recorded on the label plane only by the device.
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