Patent ID: 7120920

Claim:
A disc drive for driving a disc shaped recording medium, comprising: a base made of a single flat metal plate that is rectangular in shape; disc rotation driving means disposed on the base for rotating a disc shaped recording medium loaded in the base; recording and/or reading means disposed on the base for recording data on and/or reading data from the disc shaped recording medium; guide means disposed on the base for movably supporting the recording and/or reading means between inner and outer circumferences of the disc shaped recording medium, while the disc shaped recording medium is rotated; a feeding mechanism disposed on the base adapted to feed the recording and/or reading means along the guide means; four receiving portions adapted to receive support for the base, the receiving portions being disposed symmetrically on the base with respect to a center line of the base along the direction of the movement of the recording and/or reading means on four corners of the base; and four supporting means disposed in the four receiving portions, at least one of the four supporting means comprising a support piece and an adjusting piece adapted to adjust an elasticity of the support piece, a first of the four supporting means has a first supporting elasticity and is disposed near the disc rotation driving means, and a second of the four supporting means has a second supporting elasticity different from the first supporting elasticity and is disposed away from the disc rotation driving means, wherein the disc rotation driving means, the recording and/or reading means, and the feeding mechanism are located on the base such that a center of gravity of the base lies along the center line.