| 摘要 |
PURPOSE:To stabilize the disc loading position and to enhance the reliability, by forming the loading reference surface of the disc thickness direction and centering surface on the top part and circumference part of the disc receiving part. CONSTITUTION:By inserting the edge part of a disc drive body 7 into a restriction rib 6 through a disc drive insertion opening 12 of cartridge case, the disc support 4 is fixed on a top surface 8a of receiving part 8 by the magnetic suction power of a permanent magnet 9, being restricted against the up/down movement. Also as the flat surface parts 6a, 6b of restriction rib 6 touch with the top surface 8a, the centering of the magnetic disc body 2 is executed. In this way, accuracy of positioning of disc body toward the disc thickness direction is enhanced and disc drive with high reliability is obtained. |
