The head/tape interface

Abstract

Experimental and numerical tools were developed to assist in the design and analysis of tape head contours. Interferometric equipment was invented and built to enable measurement of head/tape spacing in the range from 250 nm to contact. This equipment was applied to measure head/tape spacing in both longitudinal and helical tape recorders. In addition to the experimental apparatus, numerical simulations were developed to predict head/tape spacing, contact pressure, and head contour wear.