| 摘要 |
Apparatus for modifying the diameter of a disc-like recording medium (126) such as an optical disc (126) includes a supporting member (125) in the form of a ring having an opening (127) for receiving the outer periphery (126a) of the recording medium (126) and exposing the signal recording area (126b) of the recording medium (126), and having a diameter larger than the diameter of the recording medium (126). |
