Patent ID: 7855854
Filing Date: 2010-12-21
Classification: G11B

Abstract:
1. A head comprising: a slider having a leading face and a trailing face and an air bearing surface, the air bearing surface defining an upstream direction pointing from the trailing face to the leading face and a lateral axis that is orthogonal to the upstream direction, the slider having a width measured along the lateral axis; and a read transducer adjacent the trailing face; wherein each of the left and right trailing air flow dams is recessed from the primary plane by a step depth in the range 0.05 to 0.5 microns, and the sub-ambient pressure cavity is recessed from the primary plane by a cavity depth in the range 0.8 to 2 microns, and wherein each of the left and right trailing air flow dams is disposed ahead of a lateral projection of the transducer by a distance measured in the upstream direction that is less than 25 microns.