Self aligned lapping guide for inductive record heads

Details Self aligned lapping guide for inductive record heads Self aligned lapping guide for inductive record heads

1989-05-17

1991-02-05

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

360126, 360119, G11B 5187, G11B 5127

Patent

active

049910469

ABSTRACT:
A technique for defining the gap depth of a magnetic head utilizes side-by-side knife edges which point in generally opposite directions, and define thereby a reference gap depth. The resistance of a conductive layer beneath the structure which defines one knife edge is the analog of the gap depth.

REFERENCES:
patent: 4182643 (1980-01-01), Cableron, Jr. et al.
patent: 4423451 (1983-12-01), Chi
patent: 4727643 (1988-03-01), Schewe et al.
patent: 4759118 (1988-07-01), Nakashima
patent: 4861398 (1989-08-01), Eukuoka et al.

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