LAPPING GUIDE SYSTEM AND METHOD FOR LAPPING MAGNETIC WRITE AND READ HEAD COLUMN

摘要

PROBLEM TO BE SOLVED: To control the significant dimensions of a write head in an ABS (air bearing surface) orthogonal direction independently of the following control while controlling the sensor stripe height of a read head in a merged write/read head.;SOLUTION: The resistance R_RE of a first electric lapping guide (ELG) 29 near the sensor 23 in the read head is correlated to the resistance R_WE of a second ELG 33 and to the width of a first optical lapping guide (OLG) 37 near the neck region 27 of the write head. The first OLG 37 is a triangular feature with one side parallel to the lapping plane and the other two sides converging near the lapping plane. As the lapping progresses, the resistances R_RE and R_WE increase and the OLG 36 width along the lapping plane increases. Thus, an OLG 37 width and a resistance R_WE corresponding to a target neck height or throat height and a resistance R_RE corresponding to a target sensor stripe height are determined. The lapping plane is actively tilted to thereby enable write head dimensions to be independently controlled on a per wafer or per row basis.;COPYRIGHT: (C)2006,JPO&NCIPI