Magnetic disk drive with carriage having bobbin supporting...

Details Magnetic disk drive with carriage having bobbin supporting... Magnetic disk drive with carriage having bobbin supporting...

2005-11-29

2005-11-29

Watko, Julie Anne (Department: 2653)

Dynamic magnetic information storage or retrieval

Head mounting

For shifting head between tracks

Reexamination Certificate

active

06970330

ABSTRACT:
A magnetic disk drive comprises at least one magnetic head for reading and writing information on at least one magnetic disk, a carriage supporting the magnetic head over the magnetic disk for movement of the magnetic head about a predetermined shaft, an annular coil supported by a bobbin provided on the carriage and subjected to an electromagnetic force for driving the carriage. The drive further comprises a first connection member for joining the annular coil and the bobbin, an in-coil member arranged inside the annular coil, and a second connection member for joining the in-coil member and the annular coil. A modulus of longitudinal elasticity of the in-coil member is larger than that of the first or second connection member. The drive thus formed has the increased carriage rigidity, the improved positioning accuracy of a magnetic head and the increased recording capacity of the disk.

REFERENCES:
patent: 6404596 (2002-06-01), McReynolds et al.
patent: 6532136 (2003-03-01), Bae et al.
patent: 6600633 (2003-07-01), Macpherson et al.
patent: 2004/0075949 (2004-04-01), Dague et al.
patent: 0576839 (1994-01-01), None
patent: A-63-277458 (1988-11-01), None
“Ceramic coil stiffener for higher coil stiffness and better heat radiation”, IBM TDB Feb. 2002, No. 454 p. 285.

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