High sensitivity single-pole head with transverse return-path core of flux

A highly sensitive low noise and narrow-track width, main pole driven type single-pole head has been developed. This head is called TRF head (single-pole head with Transverse Return-path core of Flux flow). It is a kind of main pole driven type single-pole head which operates only on one side of the recording medium[1][2], and is based on a new idea incorporated in the flux return-path portion, to improve the recording and reproducing sensitivity and to reduce its system noise. The TRF head is especially effective for the recording and reproducing with narrow track widths. The development of this head has resolved the problem of insufficient sensitivity in conventional single-pole heads which was a barrier to using narrow track widths, and has provided the prospect of using narrow track width heads necessary for high density digital video recording.