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Browse Prior Art Database

Head Contour Lapping With Flexible Abrasive Tape

IP.com Disclosure Number: IPCOM000081811D
Original Publication Date: 1974-Aug-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Baumann, GW: AUTHOR [+3]

Abstract

The major radius 10 of magnetic read/write head 11, shown in a side view, is first formed by mechanical means. Scallops 12 and 13 are then machined into the head to define the read/write head gap areas 14 and 15.

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Head Contour Lapping With Flexible Abrasive Tape

The major radius 10 of magnetic read/write head 11, shown in a side view, is first formed by mechanical means. Scallops 12 and 13 are then machined into the head to define the read/write head gap areas 14 and 15.

The head contour is now completed by passing abrasive tape 16 over the head 11 in a "shoeshine" fashion, denoted by arrow 17, in much the same manner as the head will later cooperate with magnetic recording tape. The abrasive tape's stiffness and tension are regulated to simulate that of the recording media with which the head 11 is intended to be used. Differences between the stiffness of the abrasive tape 16 and the recording media can be compensated for by changing the tension of the abrasive tape.

In this manner, abrasive tape 16 will tend to "fly" over the head 11, and cease its contouring function, only after the abrasive tape has succeeded in lapping the head to the design contour, where its stiffness and tension is designed to produce tape-to-head separation, or flying.

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