Method of manufacturing flying magnetic heads
AssigneeNikko Kyodo Co., Ltd.
InventorsNobuo Imazeki, Kazuhiro Saito
Life of this patent
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Abstract
A method of manufacturing a flying magnetic head of composite type using a magnetic thin film layer as a head core. The flying magnetic head comprises a slider, an I core bar bonded via a high-melting-point bonding glass layer to one end face of the slider and a C core bonded via a high-melting-point bonding glass layer serving as a gap spacer to the I core bar. The I core bar and C core have respective magnetic thin film layers, which are aligned to each other and mated with an ABS of the slider. I core bar is formed at a position corresponding to a wiring groove of the C core with a window groove. Such flying magnetic heads having a smooth ABS can be readily and massively manufactured.
Claims16
A method of manufacturing a flying magnetic head comprising:
- (a) forming a magnetic thin film layer on each of a plurality of substrates;
- (b) bonding together said plurality of substrates each provided with said magnetic thin film layer with intervening high-melting-point laminate glass layers to form a magnetic thin film lamination;
- (c) slicing said magnetic thin film lamination in the direction of the thickness of said lamination to obtain a plurality of core plates;
- (d) grooving one of the principal surfaces of some of said core plates in a direction perpendicular to said magnetic thin film layer to form wiring grooves and apex glass molding grooves, thus obtaining C core plates formed with said wiring grooves and said apex glass molding grooves;
- (e) slicing other ones of said core plates in a direction parallel to said magnetic thin film layers to obtain I core bars;
- (f) forming each of said I core bars with a given number of window grooves;
- (g) depositing at least a high-melting-point bonding glass layer on the surface of each said C core plate formed with said wiring grooves and on the surface of each said I core bar formed with said window grooves;
- (h) overlapping the bonding glass layer formation surfaces of each of a given number of said I core bars and each said C core plate, overlapping a dummy plate with a high-melting-point bonding glass layer formed thereon and the other surface of said I core bars and bonding together said I core bars, said C core plate and said dummy plate with intervening bonding glass layers to form a magnetic head block;
- (i) grooving said magnetic head block on the side of said C core plate to form C cores having a predetermined head core thickness;
- (j) subsequently, slicing said magnetic head block in a direction parallel to said C cores to obtain a given number of magnetic head bars;
- (k) forming each said magnetic head bar with edge grooves and a center groove, thus forming ABSs and then slicing the resultant magnetic head bar to obtain a given number of flying magnetic heads;
- (l) obliquely chamfering front and rear portions of said ABSs of each said separated flying magnetic head to form inclined surfaces;
- and
- (m) providing a winding on the C core of each said flying magnetic head.
Dependencies are inferred from the claim text.