Patent ID: 7270527

Claim:
An optical recording medium-manufacturing apparatus comprising: a punching blade section that is pushed into a disk-shaped substrate to thereby punch a central hole through the disk-shaped substrate, the punching blade section having a cutting edge; a pressing device that presses the disk-shaped substrate toward said punching blade section to thereby push said punching blade section into the disk-shaped substrate, said pressing device having an abutment portion that is brought into abutment with the disk-shaped substrate, a moving mechanism that moves said abutment portion in an approaching one of directions toward and away from said cutting edge of said punching blade section to thereby press the disk-shaped substrate, and an ultrasonic generator that causes ultrasonic vibration of said abutment portion; and a control section that controls operation of said pressing device by causing said moving mechanism to move said abutment portion in the approaching direction and causing said ultrasonic generator to perform ultrasonic vibration at least from a time point at which the disk-shaped substrate is brought into contact with said cutting edge of said punching blade section to a time point at which punching of the central hole is completed.