| 摘要 |
<p>The method for manufacturing of a recordable disc comprises the steps of recording grooves on a rotating disc (D) by using an electron beam (E), the electron beam performing a radial oscillation with a radial amplitude for defining the width of a groove, the grooves being designed for providing tracking information for the recordable disc, wherein a radial amplitude (A 2T ) is provided for recording at least two grooves (G1, G2) in parallel being separated by a land area (LA). The grooves (G1, G2) have in particular a different width (w1, w2) and the rotating disc is used as a master for the production of recordable discs having grooves with a track pitch being below the diffraction limit of a pickup for recording of data on the recordable discs.</p> |
