SU723662A1 - Method of manufacturing magnetic heads - Google Patents

Description

The invention relates to magnetic recording, in particular to methods for producing magnetic heads. A known method of manufacturing magnetic heads is by cutting the ferrite bar into core blanks and filling the gap with intergapal space between their working gap planes 1. The known method provides the relative simplicity of the process of manufacturing magnetic heads. The disadvantage of this method is that it does not allow for the identical width of the working gaps of the magnetic heads. Closest to the proposed method of manufacturing magnetic heads by forming a glass-ceramic layer of protection of the working surface on the plane of a ferrite bar, which is perpendicular to it cut into two core blanks, forming on their planes the working gaps of strip-shaped nonmagnetic films, joining core blanks by filling the stack SCR of gaps between conjugated pairwise non-magnetic films and cutting into parts of the connected core blanks between pairwise fixed non-magnetic films 2. This method provides a relatively high identity of the working gaps of magnetic heads manufactured in accordance with it. The disadvantage of this method is the significant variation in the length of the working clearances of the magnetic heads. The purpose of the invention is to reduce the variation in the length of the working gaps of the magnetic heads. This is achieved due to the fact that, before forming strip-like non-magnetic films, send-like senddst films are deposited on the plane of the connector of the working gaps, the width of each of which is equal to the width of the recording track. In this case, the formation of strip-like HeMarfmTHbix films is carried out by pressing silicon oxide and semi-different senddst films to obtain a thickness equal to half the width of the working gap.

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Method C; traced;) (b);

On the plane of the ferrite bar form a glass-ceramic layer of protection of the working surface. This formation is ensured by fusing onto the plane of the ferrite bar a glass-crystalline mass, which is polished to obtain a layer of a given thickness. Then, the ferrite bar perpendicular to its plane with a glass-ceramic layer is cut into two core billets, on the joint planes of the working gaps of which form strip-like non-magnetic films. Before the formation of strip-like non-magnetic films, sendust-like films are deposited on the plane of the working gap of the CXI gap, the width of each of which is equal to the width of the recording track. In this case, the formation of strip-like non-magnetic films is carried out by spraying silicon oxide on the strip-like sendust films until the thickness is equal to half the thickness of the working gap. After that, the core blanks are connected by filling the gaps between conjugate pair-shaped non-magnetic films with glass with glass. The bonded core blanks are cut into pieces between the pairwise pairwise band-shaped non-magnetic films. In magnetic heads manufactured according to the proposed method, the length of the working gap depends only on the width of the stripe film of sendust. The use of the invention allows a considerable degree of decrease in the length of the working gaps of the magnetic heads, and also ensures the relative simplicity of the process of manufacturing the magnetic heads. Invention

7236624

can be used in the production of floating ferrite magnetic heads.

Claims (2)

Invention Formula A method of manufacturing magnetic heads for forming a glass-crystal layer of protection of the working surface on the plane of a ferrite bar, which is perpendicular to it, is cut into two core blanks, forming working gaps in non-magnetic films of non-magnetic films on their planes, joining the core blanks by filling the gap between the pair of strips of non-magnetic films and the gap between the strips. non-magnetic films and cutting into parts of connected core blanks between conjugated subterranean strip-like not Adhesive films, characterized in that, in order to reduce the variation in the length of the working gaps of the magnetic heads, before the formation of strip-like non-magnetic films, strip-like sendust films are deposited on the connector plane of the working gaps, the width of each of which is equal to the width of the recording track, and the formation of strip-shaped nonmagnetic films is made sputtering silica onto the strip-like sendust films to obtain a thickness equal to half the working gap width. Sources of information taken into account during the examination 1. Japan patent No. 43-5272, cl. 102 E 5, 1968. 2. Japanese Patent No. 51-29403, Cl. 102 E 501, 1976 (prototype).