| 摘要 |
PROBLEM TO BE SOLVED: To provide a disk-loading roll capable of surely loading/ejecting a disk without a considerable decrease in conveyance power even when the roll is employed in the presence of a very large amount of dust or over a very long period of time. SOLUTION: The disk-loading roll has such an outer peripheral surface that the outer diameter of the roll varies in an axial direction, is formed of a rubber molded elastic product, and abutted on the peripheral portion of the disk to load the disk. The roll has a rough outer peripheral surface having a peak count of RPc of 2 to 30 per 700μm, a maximum valley depth Rv of 35 to 80μm, and an arithmetic mean roughness Ra of 2.5 to 5.5μm, wherein these values are mean values as determined through measuring the rough surface with a magnification of 400. COPYRIGHT: (C)2007,JPO&INPIT
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