An apparatus and methods of using the same for transferring functional blocks to a substrate. The computer system determines if a disk is present in the disk drive. The cam has a cam groove for regulating swaying of the roller arm parts so as to position the disc transferred in the radial direction at a predetermined position, and a cam groove for regulating swaying of the chucking arm part so as to transfer the disc situated at the predetermined position substantially into the direction of the thickness.