Magnetic head position measuring device

Details Magnetic head position measuring device Magnetic head position measuring device

1990-11-28

1993-03-23

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Miscellaneous

G11B 540

Patent

active

051969793

ABSTRACT:
A magnetic head position detecting device having enhanced miniaturization and improved measuring accuracy. In the device, the output light beam of a light source is reflected by a first mirror so as to be applied to a rotary drum or the slide contact surface of a magnetic head. The light beam reflected from the rotary drum or the magnetic head is then reflected by a second mirror so as to be detected by a light receiving element. Furthermore, in the device, the output signal levels of a light receiving element corresponding to the position of light beams from the rotary drum and the slide contact surface of the magnetic head are subjected to comparison, so that the amount of protrusion of the slide contact surface of the magnetic head from the rotary drum can be measured with high accuracy.

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