DISK BOARD AND MOLD APPARATUS FOR INJECTION MOLDING THE SAME, ROBOT FOR FETCHING DISK BOARD

摘要

PROBLEM TO BE SOLVED: To obtain a disk board having no flash at an edge of a center hole. SOLUTION: The disk board 23 comprises a straight part 24a and a tapered part 24b formed at a center hole 24, and a round surface or a C-shaped surface 24c formed at an edge of a signal transferring surface 22 side of the tapered part 24b. A mold apparatus is suitable for molding the disk board 23. A disk fetching device is provided.