| 摘要 |
There are provided: detection sections 71, 72 for detecting an edge of discs 52, 53 so as to be laterally symmetrical about a center, at a lower edge portion inside a long sideways opening 12 of a front panel 11 ; and a detection section 73 for detecting a reflective foil 60 having lack portions 61, 62 put on a lower surface of a tray 13 . If the disc is not in a regular mounting position in the tray 13 , the disc may be prevented from falling to the inside of the drive by detecting the discs 52, 53 mounted in a misaligned state and discontinuing an operation of pulling the tray 13 in, with the combination of detection outputs from those three detection sections.
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