Optical disk holding apparatus

Details Optical disk holding apparatus Optical disk holding apparatus

1996-07-22

1998-02-17

Levy, Stuart S.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 724

Patent

active

057198497

ABSTRACT:
An optical disk holding apparatus suitable for holding either an optical disk of a first type, such as a compact disk, or an optical disk of a second type, such as a mini disk. The optical disk holding apparatus operates to hold each disk such that a distance between an optical pick-up and a first surface of the optical disk is the same when the apparatus is holding an optical disk of the first type or an optical disk of the second type. The optical disk holding apparatus includes a fixed unit mounted on a rotary shaft of a disk motor and a movable unit that is guided by the fixed unit and biased upward by a spring. A magnet is mounted on the upper surface of the fixed unit for attracting one of a clamper and a metal plate of a mini disk. When holding a disk of a first type, such as a compact disk, a tapered surface of the movable unit engages the center hole of the compact disk. The clamper is provided with a projection for alignment of the compact disk, and with a friction member which press-contacts the top surface of the compact disk. When holding a disk of a second type, such as a mini disk, a press contact plane at the upper surface of the movable unit contacts the central flange plane of the mini disk.

REFERENCES:
patent: 4541086 (1985-09-01), Tanaka
patent: 4786997 (1988-11-01), Funabashi et al.
patent: 4853924 (1989-08-01), Takahashi et al.
patent: 4855990 (1989-08-01), Akiyama
patent: 5241530 (1993-08-01), Kobayashi et al.

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