Patent ID: 6795263
Filing Date: 2004-09-21
Classification: G11B

Abstract:
A magnetic recording and reproducing head comprising:a first magnetic film formed on a non-magnetic substrate; a second magnetic film formed on said first magnetic film, said second magnetic film having a recessed portion at a part thereof; a third magnetic film formed at least in said recessed portion of said second magnetic film, said third magnetic film having a thickness smaller than the thickness of said second magnetic film; an electrically conductive metal film formed in said recessed portion; a fourth magnetic film formed so as to put said electrically conductive metal film between said fourth magnetic film and said third magnetic film; a return path yoke facing said fourth magnetic film at one end with a predetermined magnetic gap, and contacting said fourth magnetic film at the other end, said return path yoke being formed so as to leave a space at least on a surface of said fourth magnetic film in a region where said electrically conductive metal film (101) is formed; an electrically conductive metal film winding wound around said return path yoke, and a recording signal being applied to said winding at the time of recording; a high frequency signal generator for supplying a high frequency current to said electrically conductive metal film at the time of reproduction, said high frequency signal generator being connected to respective ends of said electrically conductive metal film; and a high frequency amplifier for demodulating a high frequency signal for output at the time of reproduction, said high frequency amplifier being connected to said respective ends of said electrically conductive metal film.