DEVICE AND METHOD OF MANUFACTURING DISK SUBSTRATE, DEVICE AND METHOD OF MANUFACTURING STAMPER FOR FORMING DISK SUBSTRATE, DISK SUBSTRATE AND ITS MANUFACTURING METHOD, AND STICKING TYPE OPTICAL INFORMATION RECORDING MEDIUM AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To form a disk substrate without causing any problem in the sticking procedure even though a burr is generated at an inner peripheral part of the substrate when the disk substrate having a flat information recording surface is formed.;SOLUTION: The device is provided with: a fixed die 2; a movable die 1; the stamper 3 placed on the movable die 1; and a vacuum suction part making the movable die 1 to hold the stamper 3 by the vacuum suction. The stamper 3 is positioned on the movable die 1 by engaging a hole part 3b arranged on the inner peripheral part of the stamper 3 with a protruding part 1a arranged on the movable die 1, and a fused resin material is filled in a space formed between the fixed die 2 and the stamper 3, then the formed substrate 5 is manufactured, to which the rugged information held by the stamper 3 is transferred. At this time, when the stamper 3 is mounted on the protruding part 1a, the protruding part 1a is formed so that an upper face of the protruding part 1a and an inner peripheral surface of the stamper 3 are formed on the same plane, and the level difference is formed on the stamper 3 so that the inner peripheral part becoming the out of an information area is made higher with respect to the outer peripheral part including the information area.;COPYRIGHT: (C)2005,JPO&NCIPI