Patent ID: 7047859

Claim:
An optical recording medium-manufacturing apparatus, comprising: an abutment section including a cut-forming blade section that has a hollow cylindrical shape and is pushed into a resin layer formed on one side of a disk-shaped substrate, thereby forming a circular cut in the resin layer; a punching blade section including a cutting edge that is pushed into the disk-shaped substrate, for punching a central hole smaller in diameter than the circular cut, through the disk-shaped substrate; a moving mechanism that moves said abutment section in directions toward and away from said cutting edge of said punching blade section; a control section that controls motion of said abutment section caused by said moving mechanism; and an ultrasonic generator that causes ultrasonic vibration of said abutment section, wherein said control section causes said moving mechanism to move said abutment section while causing said ultrasonic generator to cause ultrasonic vibration of said abutment section, in an approaching direction toward said cutting edge of said punching blade section, to thereby cause said cut-forming blade section to be pushed into the resin layer to form the circular cut, and while maintaining a state of the ultrasonic vibration of said abutment section and a pushed-in state of said cut-forming blade section, cause said punching blade section to be pushed into the disk-shaped substrate from the other side of the disk-shaped substrate to form the central hole.