Magnetic head assembly
OwnerGeorge W. Brock, Robert N. Hyland +2inventors
InventorsGeorge W. Brock, Robert N. Hyland, Edward J. Pawlowski, Frank B. Shelledy
Life of this patent
Estimating the term…
Abstract
A magnetic head assembly useful as a write head is formed with a ferrite substrate, having a recessed channel on one surface in which a conductive coil is deposited, and a ferrite closure having a planar surface that is joined to the substrate surface to establish a transducing gap and to enclose the recessed coil. In operation, pulsed write current is applied to the write head and a significant reduction in Joule heating is realized. A low resistance substrate is employed to provide a high saturation flux density.
Claims5
A ferrite magnetic head assembly comprising:
- a ferrite magnetic substrate having a configured surface;
- a recessed channel formed on said configured surface of said substrate;
- a conductive thin film coil disposed in said channel;
- a rectangular ferrite magnetic closure section having a planar surface coextensively contiguous with said configured surface for engaging said configured surface and for enclosing said conductive coil;
- and
- an insulating layer deposited on said configured surface and between said coil and said configured surface for providing a transducing gap.
Dependencies are inferred from the claim text.