Browse Prior Art Database

Magnetic Head Structure

IP.com Disclosure Number: IPCOM000084402D
Original Publication Date: 1975-Nov-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 20K

Publishing Venue

IBM

Related People

Brock, GW: AUTHOR [+2]

Abstract

This structure and choice of materials provides a useful head for in-contact use with flexible magnetic recording media.

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Magnetic Head Structure

This structure and choice of materials provides a useful head for in-contact use with flexible magnetic recording media.

The structure consists of transducer support portions 2 and 4 composed of relatively hard material such as molybdenum, tungsten, silicon, ferrite or ceramic. Body portion 6 is composed of softer material, such as aluminum, brass, or copper. Located within the center line of each A the transducer support members 2 and 4 is a magnetic transducer, not shown.

This structure is fabricated, for example by inserting rough shaped transducer support members 2 and 4 into body portion 6. Then the structure is either contour ground or shaped with abrasive tape run against it under tension and with a substantial wrap angle.

This structure provides for close contact between its transducers and a flexible media. The sharp radii R, in conjunction with the choice of soft and hard materials, causes support portions 6 to wear more rapidly than transducer supports 2 and 4, so that the transducer portion always projects above the structure to assure close contact when used with flexible media.

By selecting transducer supports with small thicknesses, wear of the structure does not cause a substantial change in the radius R. The thickness of supports 2 and 4 are also selected to avoid the formation of an air-bearing surface between the head structure and media.

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