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Correction of Bowing of Magnetic Head Rows

IP.com Disclosure Number: IPCOM000052406D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Church, MA: AUTHOR

Abstract

During batch processing of rows of thin film heads, the rows of heads are mounted and bonded to a transfer tool. With prior-art techniques, a bow condition generally occurs so that lapping to a desired throat height for all the heads becomes a problem.

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Correction of Bowing of Magnetic Head Rows

During batch processing of rows of thin film heads, the rows of heads are mounted and bonded to a transfer tool. With prior-art techniques, a bow condition generally occurs so that lapping to a desired throat height for all the heads becomes a problem.

To correct this problem, an automated compensation for bow errors is provided by means of a variable pressure transducer 1. During processing three electrical lapping guides 2, 3, 4 are positioned on each row 5. The center guide 3 would activate the transducer 1 so that a compensating pressure is applied to a transfer tool 6 with a built-in deflecting beam 7 and thereby correcting for any bowing head rows. In this way, uniform throat heights are produced for all the heads disposed on the transfer tool.

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