MAGNETIC HEAD AND ITS PRODUCTION

摘要

PURPOSE:To form a gap having sufficient strength by making the sectional area of a groove for winding larger than that of a track width prescribing groove in a composite magnetic head where a nonmagnetic material is packed in the track width prescribing groove. CONSTITUTION:The sectional area of the C-shaped groove for winding is made larger than that of the V-shaped groove 6 for track width control so that a nonmagnetic material 9 packed in the track width prescribing groove 6 is prevented from flowing out to a winding window 7 by its capillary phenomenon and air bubbles do not remain in the last head because air bubbles remaining in the nonmagnetic material 9 are concentrated on the center part of the track width prescribing groove 6. The V-shaped groove is so worked that the length between the center position of the V-shaped groove and a part which an operating gap and prescribes the track width is 50-90% of the core thickness of the head. Thus, the nonmagnetic material is not flowed to the C-shaped groove for winding in the bonding process through the nonmagnetic material is packed in the V-shaped groove.