Process for producing a thin-film magnetic tape head

Details Process for producing a thin-film magnetic tape head Process for producing a thin-film magnetic tape head

1992-12-07

1994-01-18

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

360119, 360125, G11B 542

Patent

active

052790266

ABSTRACT:
A process for producing a thin-film magnetic tape head includes the steps of coating a substrate with a layer of material which protects the substrate from an etchant. A cavity is etched into the substrate and a prismoid of magnet material is deposited in the cavity. The sides of the substrate are removed so that the prismoid projects above the sides for a substantial portion of the height of the prismoid. The substrate is coated with a gap-coating layer and the gap-coating is removed from one side of the prismoid. Another layer of magnetic material is deposited onto the substrate and various parts, such as pole shoes, are formed. The substrate is polished and the apex of the prismoid is removed. Head windings are made. A return path for the head windings is provided by depositing another layer of magnetic material onto the substrate. A protective layer of a metal oxide is deposited onto the substrate.

REFERENCES:
patent: 4399479 (1983-08-01), Meckel
patent: 4601099 (1986-07-01), Nishiyama
patent: 5090111 (1992-02-01), Lazzari
patent: 5123156 (1992-06-01), Meunier et al.
Patent Abstracts Of Japan vol. 5 No. 196 56-117320 Dec. 12, 1981.
Patent Abstracts Of Japan vol. 11 No. 112 61-260411 Apr. 9, 1987.
Patent Abstracts Of Japan vol. 11 No. 305 62-97118 Oct. 6, 1987.

Affiliated with

Also associated with

Rating

Process for producing a thin-film magnetic tape head does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing a thin-film magnetic tape head, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing a thin-film magnetic tape head will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1129518