Magnetic head contour utilizing facets for air film skiving

Details Magnetic head contour utilizing facets for air film skiving Magnetic head contour utilizing facets for air film skiving

1989-04-04

1990-09-11

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

360102, G11B 5187

Patent

active

049567373

ABSTRACT:
To remove the air film adherent to a moving tape, rather than have the tape incident upon a steep shoulder of the head, a facet in the contour provides a gradual slope breaking the continuity of the head contour. The break in the contour provides an edge to skive the air adherent to the tape, and the facet provides a gently ramping surface which engages any asperity on the tape surface in a less aggressive manner than occurs when the asperity encounters a shoulder directly. Because of the stiffness of the tape, the tape does not contact the head contour over the length of the facet; the tape spans the contour between the edges of the facet. The air skived from the tape by the facet edge is squeegeed out between the tape and the facet, and a slot in the facet increases the cross sectional area through which the air is expelled. The tape spanning the facet is not in contact with the edges of the slot, the edge related problems of the prior art are avoided by the practice of the present invention.

REFERENCES:
patent: 4695909 (1987-09-01), Momata

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