Patent ID: 7042682
Filing Date: 2006-05-09
Classification: G11B

Abstract:
1. A method to eliminate downstream flux leakage from a perpendicular magnetic writer, comprising: providing a magnetic yoke having first and second non-parallel parts, said first part terminating as a downstream shield having a planar lower surface; providing a conductive coil that surrounds said yoke; providing a main pole having first and second ends; the first end of the main pole being in magnetic contact with the magnetic yoke's second part, extending therefrom so that its second end is a perpendicular write pole having a bottom surface that is coplanar with said downstream shield lower surface; said downstream shield being spaced a first distance from said write pole; providing a read head shield located upstream from said write pole; inserting an upstream shield between the write pole and the read head shield, said upstream shield being spaced a second distance from the write pole; and magnetically connecting said upstream and downstream shields by means of side shields located on opposing sides of the write pole.