Electromagnetic heads, flexures, gimbals and actuators...

Details Electromagnetic heads, flexures, gimbals and actuators... Electromagnetic heads, flexures, gimbals and actuators...

2011-03-29

2011-03-29

Klimowicz, William J (Department: 2627)

Dynamic magnetic information storage or retrieval

Head mounting

For adjusting head position

C360S244400, C360S245300

Reexamination Certificate

active

07916427

ABSTRACT:
Devices for reading or writing electromagnetic information include a wafer substrate piece disposed between an electromagnetic transducer and an electrostrictive or piezoelectric actuator. The substrate piece is shaped as a rigid body adjoining the transducer and as a flexible element connecting the body and the actuator. To fabricate, at least one electrostrictive layer and many transducers are formed on opposite sides of a wafer that is then cut into rows containing plural transducers. The rows are processed from directions generally normal to the wafer surface upon which the transducers were formed, by removing material to form a head, flexures and a media-facing surface on the head. Conductive leads are formed on a back surface of flexures connecting the transducer with drive electronics. The flexures are aligned with forces arising from interaction with the media surface and from seeking various tracks, reducing torque and dynamic instabilities and increasing actuator access time.

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