Patent ID: 6922298

Claim:
A helical scan type magnetic tape recording apparatus including one thin film multi-recording head mounted on a rotary drum, wherein said thin film multi-recording head includes N (N is an arbitrary integer of 2 or more) recording heads that are able to record recording tracks of channel-1 to channel-(N−1) each having a track width narrower than a head width, and records N recording tracks at a predetermined recording track angle on a magnetic tape by one rotation of the rotary drum, wherein; helical scan recording is performed by forming continuous recording tracks having the same azimuth angle and the same track pitches free from non-recording portion, by determining the number of rotations of the rotary drum and a tape speed in accordance with the following equation, such that (N−1) recording tracks having the same track pitches, equal to track widths, narrower than the head width and one recording track having a wider track width than that are formed by a first rotation of the rotary drum, then by a second rotation, a preceding recording head overwrites the recording track having the wider track width to form a recording track having a track width equal to the track width of a recording track narrower than the head width; V 1 = Tp·N ·( RPS )/sin θ, wherein V 1 is a tape speed, Tp is a track width, N is the number of heads of a thin film multi-recording head, RPS is the number of rotations of the rotary drum per second, and θ is a recording track angle on a magnetic tape.