| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical recording medium of high recording density, whose duplication is impossible, and its manufacturing method and manufacturing device. <P>SOLUTION: In the manufacturing method of an optical disk, having a process of manufacturing a stamper for manufacturing the optical disk by irradiating a movable glass substrate with a laser beam and forming pits 1 corresponding to the information to be recorded, the length in the direction crossing the track direction is made longer than the length in the track direction of the optical disk for the shape of the pits 1 formed on the optical disk, by forming the pits 1 by moving the laser beam in a direction crossing the track direction of the glass substrate. <P>COPYRIGHT: (C)2004,JPO |
