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Miniature Low Cost Recording Head

IP.com Disclosure Number: IPCOM000075063D
Original Publication Date: 1971-Jul-01
Included in the Prior Art Database: 2005-Feb-24
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Watrous, RB: AUTHOR

Abstract

This recording head comprises a magnetic core 10 and a formed conducting wire 15. The wire 15 serves to suspend the core 10 with respect to a magnetic recording medium 20 and also as a single turn coil around the core.

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Miniature Low Cost Recording Head

This recording head comprises a magnetic core 10 and a formed conducting wire 15. The wire 15 serves to suspend the core 10 with respect to a magnetic recording medium 20 and also as a single turn coil around the core.

The head is manufactured by forming the wire, coating the wire with an electron beam resist, and exposing a slot having the length and track width, of the desired gap 11 in the core. Metal is then plated through the slot. The resist is then exposed by an electron beam so that the circumference of the wire adjacent to the transducing gap is uncovered. Magnetic material such as permalloy is then plated around the wire in the exposed area. The side of the head facing the recording medium is then lapped, as shown in Fig. 2, to the particular throat height.

In operation, the low-mass head can be made to precisely follow the surface of the recording medium. A more flexible suspension system can be achieved by flattening the straight portions of the wire.

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