Method of manufacturing a multi-track longitudinal, metal-in-gap head
AssigneeStorage Technology Corporation
InventorRamesh Sundaram
Life of this patent
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Abstract
A multi-track longitudinal magnetic tape head capable of writing data to high-coercivity magnetic tapes and a method for making the same. The multi-track, longitudinal magnetic tape head according to the present invention comprises a plurality of write elements and read elements. The write elements comprise a write pole separated from a substrate by a write gap. The write poles each comprise a block of magnetic material having a planar gap surface and a convex top surface. A high B.sub.s composition is deposited on an etched portion of the magnetic material of each write pole at the gap surface. The gap surface is processed so that it is a contiguous planar surface comprising the high B.sub.s, composition, insulating material and the magnetic material.
Claims14
A method of manufacturing a multi-track, longitudinal magnetic tape head for writing data to magnetic tapes, comprising the steps of:
- (a) forming a block of material comprising alternating rows of magnetic material and insulating material;
- (b) forming trenches only in those rows of magnetic material that are to become write poles;
- (c) filling said trenches with a high saturation magnetic flux density composition;
- (d) flat lapping the surface of said block to form a wafer having a substantially planar surface comprising said magnetic material, said high saturation magnetic flux density composition, and said insulating material;
- and
- (e) slicing said wafer to create a module comprising a pattern of read and write poles.
A method of manufacturing a multi-track, longitudinal magnetic tape head for writing data to magnetic tapes, comprising the steps of:
- (a) forming a block of material comprising alternating rows of magnetic and insulating material;
- (b) forming trenches only in those rows of magnetic material that are to become write poles;
- (c) filling said trenches with a high saturation magnetic flux density composition;
- (d) flat lapping the surface of said block to form a wafer having a substantially planar surface comprising said magnetic material, said high saturation magnetic flux density composition, and said insulating material;
- and
- (e) slicing said wafer to create a module comprising write poles.
Dependencies are inferred from the claim text.