Patent ID: 6891697

Claim:
A magnetic head comprising: at least a main pole; wherein a profile of the main pole on a magnetic head air bearing surface is such that it is composed of a first portion whose length in a cross-track direction continuously increases from a leading edge to a trailing edge, and a second portion located on a side of the trailing edge of the first portion, and the second portion has a length in the cross-track direction at the trailing edge which is substantially equal to a length in the cross-track direction at the point of contact between the first and second portions; wherein a rate of change in the length of the second portion in the cross-track direction from a leading edge to the trailing edge is different from the rate of increase in the length of the first portion in the cross-track direction; and wherein the length of the second portion in a track running direction is smaller than the length of the first portion in the track running direction.