Actuator apparatus for magnetic disc recording systems

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record

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360 97, G11B 548, G11B 560, G11B 2108

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active

042801575

ABSTRACT:
Actuator apparatus is disclosed for positioning a plurality of magnetic heads transversely along a path which is substantially a radius of a rotating magnetic disc. The apparatus includes a parallelogram shaped supporting structure comprising a fixed inner member coupled to a movable outer member by a pair of resiliently deformable spring members. A suspension spring is mounted on the movable outer member and provides both gimbal support and pressure loading to a plurality of magnetic heads mounted thereon. The actuator apparaus further includes a continuous drive band affixed to the movable outer member and driven by a stepper motor for positioning the magnetic heads along the substantially radial path, thereby permitting information to be read from and written onto the various tracks of the magnetic disc.

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IBM Tech. Disc. Bull., Bailey, Idler System for Transducer Supporting Band, vol. 17, No. 11, Apr. 1975, pp. 3426-3429.
IBM Tech. Disc. Bull., Hickox, Head Mount, vol. 18, No. 2, Jul. 1975, p. 541.

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