Browse Prior Art Database

Putting Small Radii on the Edges of a Ceramic Magnetic Transducer Part

IP.com Disclosure Number: IPCOM000085099D
Original Publication Date: 1976-Feb-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 2 page(s) / 39K

Publishing Venue

IBM

Related People

Wheeler, SE: AUTHOR

Abstract

Wheel 6 having a soft elastomeric tire 8 is given relative movement across surfaces 2 of ferrite magnetic head 1; and, due to the softness of tire 8, it "tents" over surfaces 2 and thus provides rounded edges 4 and corners 5 which define surfaces 2.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 53% of the total text.

Page 1 of 2

Putting Small Radii on the Edges of a Ceramic Magnetic Transducer Part

Wheel 6 having a soft elastomeric tire 8 is given relative movement across surfaces 2 of ferrite magnetic head 1; and, due to the softness of tire 8, it "tents" over surfaces 2 and thus provides rounded edges 4 and corners 5 which define surfaces 2.

In contact recording magnetic heads particularly of the ceramic (ferrite) type used in conjunction with magnetic disks, such as magnetic disk 3, sharp or rough corners and edges that may contact and thus scratch or otherwise damage the oxide coating on the disk must be avoided if data integrity is to be maintained. As magnetic recording heads of this type also depend on surface finish in the magnetic gap areas, any method used to put controlled and small radii on exposed edges and corners must also maintain the original surface finish of the head 1 and avoid eroding the bond lines in the gap areas.

With a ferrite magnetic head 1 with raised areas 2 which act as bearing surfaces on disk 3, edges 4 and corners 5 require small radii or corner blends to prevent damage to the disk. Wheel 6 having elastomeric tire 8 thereon accomplishes this corner blending and may have either an integral or detachable shaft 7. Wheel 6 has tire 8 molded to its periphery. Tire 8 is of soft elastomeric material (preferably 30-35 durometer) which may be urethane or some similar material, and wheel 6 has its outer periphery ground to increase concentricity with shaft 7 and to roughen the surface slightly.

In...