Patent ID: 8896965

Claim:
A perpendicular magnetic recording (PMR) writer for shingle writing, comprising: (a) a write pole formed along an air bearing surface (ABS) with a leading edge and sections of a trailing edge formed parallel to a top surface of a substrate, and having two sides wherein each side intersects the trailing edge at a corner, said trailing edge comprises: (1) a first end section that terminates at a first side and is formed parallel to the substrate; (2) a second end section that terminates at a second side and is formed parallel to the substrate; and (3) a recessed center section connecting the first and second end sections and wherein the recessed center section is a single curved arc that is formed a lesser distance from the substrate than the first and second end sections; (b) a write gap formed on the trailing edge and having a planar top surface such that a variable first thickness of the write gap above the recessed center section is greater than a fixed second thickness above the first and second end sections; (c) a side gap that adjoins each side of the write pole and having a side formed substantially parallel to a nearest side of the write pole and located a gap distance therefrom; (d) a side shield that adjoins a side of each side gap and interfaces with an overlying trailing shield; and (e) the trailing shield that adjoins a top surface of each side shield and is formed on the top surface of the write gap.