| 摘要 |
PURPOSE:To prevent worn particles from being stuck on the surfaces of a stamper even though the stamper is moved while being housed in a housing case by holding the stamper while holding surfaces of the inner peripheral side and the outer peripheral side of the stamper from upper and lower directions. CONSTITUTION:An upper inner peripheral side holder 11 holding the inner peripheral side of the stamper 30 and an upper outer peripheral side holder 12 holding the outer peripheral side thereof are provided on the upper lid 10 of a stamper housing case. A lower inner peripheral side holder 21 holding the inner peripheral side of the stamper 30 and a lower outer peripheral side holder 22 holding the outer peripheral side thereof are provided on a lower lid 20. Then, four kinds of holders 11, 12, 21, 22 are come into contact with non-information parts where the information of the stamper 30 are not inserted. Thus, since the upper inner peripheral side holder 11 and the lower inner peripheral side holder 21 hold the non-information parts without being inserted into the center hole 31 of the stamper 30, holders are not shaved by the stamper. |
