Correction of Frequency-Response Variations Caused by Magnetic-Head Wear

Wear on a magnetic-recording head reduces the front-gap pole-face depth and thereby produces an increase of the gap reluctance. This in turn produces a higher effective bias flux which has an erase action and thus tends to attenuate the high frequencies as they are being recorded on the recording medium. It is the purpose of the paper to present these performance variations as a function of the lowered inductance associated with head wear and to show how, simply through a correction of bias current, proper performance can be restored.

Print ISSN

0898-042X

Published

1953-07

Content type

Original Research

DOI

10.5594/J04926