Patent ID: 8542461
Filing Date: 2013-09-24
Classification: G11B

Abstract:
1. PMR head comprising: a main pole having a first portion of a trailing edge surface upwardly tapered at an angle α relative to a perpendicular to an ABS and extending away from said ABS for a perpendicular distance tWGd and a second portion having no taper and a uniform width thereafter; a trailing edge shield having an ABS, a back surface parallel to said ABS and separated from said ABS by a distance TH and a doubly angled leading edge surface joining said ABS and said back surface, wherein a first portion of said leading edge surface is a plane that contacts said ABS and makes an angle β with a perpendicular to said ABS and extends a perpendicular distance eTH from said ABS and wherein a second portion of said of said leading edge surface is a plane that joins said first portion to said back surface and makes an angle γ with a perpendicular to said ABS; wherein the separation between said first portion of said main pole and said first portion of said leading edge surface of said trailing edge shield forms a writer gap portion of substantially uniform width and wherein a separation between said main pole and said second portion of said leading edge surface of said trailing edge shield increases with distance perpendicularly away from said ABS.