Electrical resistors – Resistance value responsive to a condition – Magnetic field or compass
Patent
1985-08-15
1987-06-02
Goldberg, E. A.
Electrical resistors
Resistance value responsive to a condition
Magnetic field or compass
360110, H01L 4300
Patent
active
046707328
ABSTRACT:
An electrical lapping guide resistor for measuring the lapping distance in a process for manufacturing thin film magnetic transducers. Final throat height is measured with an electrical lapping guide resistor which provides a linear change in resistance versus lapping distance. The lapping guide resistor is configured in a shape such that the effective length of the resistors increases as the effective width decreases. In a preferred embodiment of the invention, the resistor includes first and second converging edges which extend from a rearward edge parallel to the final throat height toward the lapping surface. Conductors are disposed along the converging edges. Measurements of the change in lapping distance are effected by measuring the distance between the conductors.
REFERENCES:
patent: 3787638 (1972-04-01), Murai
patent: 3821815 (1972-10-01), Abbott et al.
patent: 4155106 (1982-12-01), Muraoka et al.
IBM Tech. Discl. Bull., vol. 11, No. 12, May 1969, p. 1792, entitled "Alignment of Read-Write Heads in Sliders".
Goldberg E. A.
International Business Machines
Lateef Marvin M.
Schmid, Jr. Otto
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