Browse Prior Art Database

Magnetic Head Construction

IP.com Disclosure Number: IPCOM000085981D
Original Publication Date: 1976-Jul-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Cheatham, SD: AUTHOR [+3]

Abstract

This head structure is produced utilizing a combination of glassing and diffusion bonding techniques. The transducer core portion 2 consists of a pair of magnetic pole pieces 4 and 6 consisting of material such as ferrite, and a pair of ceramic support portions 8 and 10. Core 2 is prefabricated with the portions joined by any suitable technique, such as glassing.

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Magnetic Head Construction

This head structure is produced utilizing a combination of glassing and diffusion bonding techniques. The transducer core portion 2 consists of a pair of magnetic pole pieces 4 and 6 consisting of material such as ferrite, and a pair of ceramic support portions 8 and 10. Core 2 is prefabricated with the portions joined by any suitable technique, such as glassing.

Shield portions 12 and 14 are mirror image structures of one another. Each shield includes a ceramic portion 16 and a magnetic portion 18. Each shield 12 and 14 is prefabricated by diffusion bonding ceramic portion 16 and magnetic portion 18 under conditions of extreme heat and pressure. Subsequently, shields 12 and 14 are bonded to transducer core 2 by, for example, conventional glassing as shown in an exaggerated manner by glass lines 20.

The design of this head prevents all glass lines 20 from making contact with magnetic recording media during transducing operations. This reduces the chance for preferential wear of the glass lines 20 and, therefore, provides extended head life.

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