Patent ID: 7244169
Filing Date: 2007-07-17
Classification: B24B,Y10T

Abstract:
1. A method of providing an in-line contiguous resistive lapping guide, the method comprising: (a) fabricating a sensor with a magnetic path direction; (b) forming the sensor in a structure having conductive leads that extend in the magnetic path direction from the sensor; (c) providing an in-line lapping guide in the structure that extends in the magnetic path direction, and a cavity containing a material between the in-line lapping guide and the sensor such that the sensor is embedded in the structure; (d) positioning a resistor in the cavity between the sensor and the in-line lapping guide, such that a total resistance across the conductive leads is the parallel resistance of the sensor, the resistor, and the in-line lapping guide; (e) lapping the in-line lapping guide and the cavity material and resistor in the magnetic path direction and monitoring an electrical resistance of the cavity via the conductive leads; (f) determining a lapping end point at the sensor based on a change in electrical resistance between the conductive leads.