Patent ID: 6027397
Filing Date: 2000-02-22
Classification: B24B,G11B,Y10T

Abstract:
A dual element electrical lapping guide for a row of multi-layer dual element magnetoresistive and inductive magnetic transducers formed on a substrate, said multi-layer transducers being separated by at least one separation kerf, comprising:a resistive element formed on said substrate within one of said separation kerfs, said resistive element having an edge thereof positioned so as to be subject to lapping of said row;an electrical switch element superposed on said resistive element within said one separation kerf, said electrical switch element initially closed and subject to lapping of said row to open said switch element; andelectrical leads coupled to said resistive element and to said electrical switch element, whereby said resistive element and said electrical switch element may be measured to determine the extent of lapping thereof.