Abstract: An azimuthal magnetic recording and reproducing apparatus comprises a magnetic head including at least one head gap for the recording and reproduction of information on and from recording tracks extending in the longitudinal direction of a magnetic tape. In the apparatus, the head gap is disposed to make the recording and reproducing operation so that the direction of magnetization on one of the recording tracks differs from that on the adjacent one.

Abstract: A reproducing and amplifying circuit for a magnetoresistive head comprises an amplifying circuit with a feedback circuit. The head is part of the feedback circuit. Thus, the head is connectable with the feedback circuit so that the head is supplied with a drive current by the amplifying circuit and a reproduced electric signal outputted by the head is coupled to the amplifying circuit for amplification. A magnetoresistive element may be provided in the amplifying circuit to effect temperature compensation for the head. The reproducing and amplifying circuit is simple in structure, has an enhanced signal-to-noise ratio and is immune to temperature variation.

Abstract: A method for fabricating a rear core for the magnetic circuit of a Hall effect magnetic head is disclosed. The bottom size of the rear core protrusion is made substantially equal to the size of a Hall element. A gap is provided between the Hall element and the rear core. In order to minimize the gap, the rear core block is provided with supports for fabrication, whereby the gap between the Hall element and the bottom protrusion of the rear core is positioned accurately. The supports are removed at the end of fabrication. The bottom protrusion of the rear core prevented pressure from being applied to the Hall element, thus improving the sensitivity of the Hall effect magnetic head without increasing noises.