Patent ID: 7411874
Filing Date: 2008-08-12
Classification: G11B

Abstract:
1. A recording and/or playback apparatus comprising: a pickup chassis having provided thereon an optical pickup, pickup moving mechanism and a disk rotation driving mechanism; a cover member having formed therein an opening through which the pickup and disk table face the recording surface of a disk-shaped recording medium and which is connected to the pickup chassis to form a part of a concavity in which the disk-shaped recording medium is to be received; and a disk tray having formed therein the disk-shaped recording medium receiving concavity, generally circular, and having formed therein an opening through which the cover member faces directly the recording surface of the disk-shaped recording medium and which is closed by the cover member when the latter is connected to the pickup chassis, the pickup chassis, cover member and disk tray being formed from materials different in coefficient of thermal expansion from each other; the disk tray having a projection provided on a wall provided at the outer-circumferential side of the concavity and extending to above the opening to maintain a clearance between the outer-circumferential wall and the cover member which closes the opening.