Patent ID: 6078479
Filing Date: 2000-06-20
Classification: G11B

Abstract:
A thin film read-write magnetic head for use with a magnetic medium on which data tracks are recorded and read out comprising:first and second magnetic layers for forming a magnetic yoke with a nonmagnetic transducing gap and having at least three separate closely spaced sections, all of said three sections each being formed of material having substantially the same magnetic reluctance, wherein the total width of said nonmagnetic transducing gap defined by said three sections delineates the total width of said recorded data tracks, the center section of at least one of said layers having an interspace formed therein;flux sensing means disposed within said interspace for sensing a readout signal;write coil means disposed between said first and said second magnetic layers;magnetic valve conductor means coupled to said magnetic yoke adjacent said flux sensing means;said magnetic valve conductor means being disposed between said write coil means and said flux sensing means; andmeans for magnetically saturating said magnetic valve conductor means during sensing of said readout signal and for providing a magnetic shunt around said flux sensing means during signal recording by said write coil means.