MAGNETIC HEAD FOR WRITING AND READING WITH SEMICONDUCTOR SYSTEM MAGNETIC FIELD DETECTOR

摘要

PROBLEM TO BE SOLVED: To provide a magnetic head for writing-in and reading with a semiconductor system magnetic field detector which is free from noises. ;SOLUTION: The semiconductor system detector 40 is directly installed in an air gap 24 at a flying plane level. The detector 40 is positioned nearest a recording medium and is sensitive to a leakage magnetic field from the medium without intervention of a magnetic circuit for magnetic flux induction. Since the detector is in the air gap 24 for writing-in, complete geographical accordance between a writing-in operation and a reading operation is simultaneously secured. The size of the detector 40 is fit to the size of a recording zone, the width may be equal to the width of a recording track and the length may be equal to or below the length of a recording zone. In the magnetic head for writing-in and reading containing a magnetic circuit accompanied with two magnetic poles constituting a flying plane and separated by the air gap 24, a writing-in means and a reading means composed of a conductive wound wire 18 surrounding the magnetic circuit are contained and the reading means is composed of the semiconductor system magnetic field detector 40 positioned in the air gap 24 at the flying plane level.;COPYRIGHT: (C)1998,JPO