Positioner for precisely moving an E-block of a disk drive

Dynamic magnetic information storage or retrieval – Head – Magnetoresistive reproducing head

Reexamination Certificate

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Reexamination Certificate

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06952331

ABSTRACT:
A positioner (20) for a disk drive (10) that includes a magnet assembly (52), a conductor assembly (54), and a control system (22) is provided herein. The magnet assembly (52) includes a pair of magnet arrays (56A) (56B) and a pair of spaced apart flux return plates (75A) (75B). The conductor assembly (54) includes a coil array (78). The coil array includes a first portion (84) and a second portion (86) that are positioned substantially perpendicular to a longitudinal axis (43) of an E-block (16). The control system (22) directs current to electrically excite the first and second portions (84) (86) to generate a first force F1and a second force F2which are (i) parallel to the longitudinal axis (43) of the E-block (16), and (ii) equal in magnitude and directionally opposite to better position a data transducer (50) on a target track (32) of a storage disk (28).

REFERENCES:
patent: 5119253 (1992-06-01), Kotani
patent: 5295031 (1994-03-01), Wasson
patent: 5963398 (1999-10-01), Tohkairin
patent: 6225712 (2001-05-01), Miyamoto et al.
patent: 6633457 (2003-10-01), Lin et al.

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