Patent ID: 7983009
Filing Date: 2011-07-19
Classification: G11B

Abstract:
1. A magnetic recording/reproducing system, comprising: a thin-film magnetic head; a recording medium; and a drive unit configured to rotationally drive said recording medium in a constant direction and configured to move said thin-film magnetic head substantially in a radial direction of said recording medium, wherein said recording medium has data tracks configured to record data information, said recording medium and said magnetic head are located in such a relation as to make a skew angle in a circumferential direction of at least some data tracks of said recording medium, said skew angle having a maximum α said thin-film magnetic head includes a recording head portion configured to record magnetic information on said recording medium and a reproducing head portion configured to reproduce the magnetic information recorded on said recording medium, said recording head portion includes, said reproducing head portion includes, and wherein at least a portion of said magnetic pole layer is disposed between the write shield layer and the reproducing head portion, said upper read shield layer and said lower read shield layer extend rearward from the air bearing surface, said write shield layer lies substantially at the air bearing surface, said upper read shield layer and said lower read shield layer lie substantially at the air bearing surface, and said lower read shield layer is spaced further away from said write shield layer than said upper read shield layer in a thickness direction, and both ends of said write shield layer at the air bearing surface in a width direction, both ends of said upper read shield layer at the air bearing surface in the width direction and both ends of said lower read shield layer at the air bearing surface in the width direction are positioned and set such that until said skew angle is past said maximum skew angle α