| 摘要 |
PURPOSE:To improve the yield of a thin film magnetic head by forming a magnetic circuit part at a pitch smaller than a cut-pitch and cutting off the head chip so as to arrange a non-defective magnetic circuit to a prescribed location in the head cut. CONSTITUTION:The pitch (l) of the cut of the magnetic circuit part 11 is formed so as to be made smaller than a cut pitch L in case of the cut-off of the head chip. The slicing is applied with a prescribed cut pitch L and in cutting plural head chips, as a result of check, if the magnetic circuits 11a, 11b are assumed to be defective, then slicing is applied at a position of a cut line having a prescribed cut pitch L, that is, a position of cut line (a) shown in alternate long and short dash lines in figure at the outside of the location of the circuits 11a, 11b to form plural head chips. Thus, defective magnetic circuits 11a, 11b are not worked and non-defective parts only are cut off selectively to improve the yield. |
