Rotating magnetic head assembly.

摘要

Head chips having gaps of mutually different widths are laminated in close contact with each other in the widthwise direction of the gaps, and are mounted on a rotating drum. Windings respectively wound around the head chips are selectively operated by a driving circuit. By means of this selection, one or adjacent ones of the plurality of windings are adopted as an object of operation, and during recording a recording current is supplied to the winding selected, while during reproduction a reproducing current is fetched from the winding selected. An effective gap width contributing to recording and reproduction is a total of the gap widths of the head chips around which the windings thus selected are wound. The track width on the magnetic tape is determined by the effective gap width. Accordingly, the track width is variably set as the windings are selectively driven.