Method of making edge protected ferrite core

Details Method of making edge protected ferrite core Method of making edge protected ferrite core

1982-03-26

1983-12-06

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

204192D, 360122, 427127, 427209, 427255, G11B 542

Patent

active

044184735

ABSTRACT:
The sputter deposition of a thin film of material on both sides of a thin substrate is performed by positioning the substrate sides orthogonal to the target and preferably radial to the deposition center of the sputter system. The vapor deposition of alumina on a thin ferrite core for a magnetic head is accomplished by positioning the ferrite substrate in the vacuum chamber orthogonally to the target and radial to the particle deposition center. The alumina is deposited on both sides of the ferrite core simultaneously to substantially the same thickness. The deposition on both sides of the ferrite core protects the core against width erosion, and minimizes bending stress. In addition, signal output of the ferrite core when used in a magnetic head is increased.

REFERENCES:
patent: 3562442 (1971-02-01), Pear, Jr.
patent: 3614831 (1971-10-01), Grundtner et al.
patent: 3886025 (1975-05-01), Riseman
patent: 3911579 (1975-10-01), Lane et al.
patent: 4252837 (1981-02-01), Anton
patent: 4298899 (1981-11-01), Argumedo et al.

Affiliated with

Also associated with

Rating

Method of making edge protected ferrite core does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of making edge protected ferrite core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of making edge protected ferrite core will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2023061