Patent ID: 7715152
Filing Date: 2010-05-11
Classification: G11B

Abstract:
1. A magnetic head comprising a main pole, a return pole, and a trailing side shield disposed in a cross-track direction and in a trailing direction of the main pole, wherein a gap distance Gt between the main pole and the trailing side shield in the trailing direction, and a gap distance Gs between an edge on a trailing side of the main pole and the trailing side shield in the cross-track direction satisfy a relation: Gs>Gt, and wherein a thickness Gd from an air bearing surface of the trailing side shield for a portion of the trailing side shield opposing to the main pole is equal to or less than a throat height of the main pole, the throat height being the distance from the air bearing surface to a flare point of the main pole where a track width of the main pole flares; wherein the return pole is closer to a trailing end of the magnetic head than the trailing side shield, and the trailing side shield is disposed between the main pole and the return pole.