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Ferrite Shielded Transducer

IP.com Disclosure Number: IPCOM000041719D
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Baasch, HJ: AUTHOR [+4]

Abstract

The read-write head assembly includes a ferrite base 5 with the transducer assembly 6 as an integral part thereof. The enclosure is completed by a ferrite cap or cover 7. Since the ferrite is a hard material, the lower surface 8 of the base 5 becomes a part of the bearing surface which confronts the magnetic medium. Further, by extending to the medium, the ferrite provides shielding in an unprotected area when compared to materials with respect to which shield-to-medium clearance had to be maintained. It will also be observed that both base 5 and cover 7 are conical in shape to prevent the ferrite-shielding surfaces from receiving flux in a normal direction. The conical surfaces reduce the area normal to the generated flux in any direction to thereby enhance the effectiveness of the ferrite shield.

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Ferrite Shielded Transducer

The read-write head assembly includes a ferrite base 5 with the transducer assembly 6 as an integral part thereof. The enclosure is completed by a ferrite cap or cover 7. Since the ferrite is a hard material, the lower surface 8 of the base 5 becomes a part of the bearing surface which confronts the magnetic medium. Further, by extending to the medium, the ferrite provides shielding in an unprotected area when compared to materials with respect to which shield-to- medium clearance had to be maintained. It will also be observed that both base 5 and cover 7 are conical in shape to prevent the ferrite-shielding surfaces from receiving flux in a normal direction. The conical surfaces reduce the area normal to the generated flux in any direction to thereby enhance the effectiveness of the ferrite shield.

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