Data storage-playback apparatus and optical disk apparatus

Details Data storage-playback apparatus and optical disk apparatus Data storage-playback apparatus and optical disk apparatus

1995-11-03

1998-10-20

Levy, Stuart L.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Having power driven transducer assembly

369249, G11B 2102, G11B 1730

Patent

active

058257454

ABSTRACT:
A data storage-playback apparatus includes a head for storing and playing data which is movable on the data storage media. A guide rail guides the head along a predetermined direction of the data storage media. The guide rail is composed of a ferromagnetic substance and passes through a coil. The coil is fixed to the head. A yoke is magnetically connected with the guide rail. A permanent magnet is fixed to the yoke and oriented with a magnetic direction aligned toward a curved surface of the coil. A length of the permanent magnet along the magnetic direction is larger than a height of the permanent magnet along a direction perpendicular to both the magnetic direction and a length direction of the guide rail.

REFERENCES:
patent: 4698798 (1987-10-01), Faber et al.
patent: 4908816 (1990-03-01), Champagne et al.
patent: 5138605 (1992-08-01), Shtipelman et al.
patent: 5245232 (1993-09-01), Nihei et al.
patent: 5278820 (1994-01-01), Shtipelman
patent: 5361243 (1994-11-01), Kasahara
patent: 5511062 (1996-04-01), Schoneveld et al.

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