Method of producing composite type, metal-in-gap magnetic head c

Details Method of producing composite type, metal-in-gap magnetic head c Method of producing composite type, metal-in-gap magnetic head c

1990-10-03

1992-01-28

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

29603, 156645, 156656, 1566591, B44C 122, C23F 102

Patent

active

050841297

ABSTRACT:
A method of producing a composite type magnetic head core, WHEREIN a first and a second ferrite block are joined together into an integral ferrite structure, such that a metallic magnetic film is interposed between opposite portions of joining surfaces of the two ferrite blocks which define a magnetic gap open in a track portion provided by the ferrite blocks, and said integral ferrite structure is cut to shape a yoke portion which includes at least a part of the track portion. Said metallic magnetic film, said track portion and said yoke portion having a first, a second and a third width as measured in a direction parallel to said magnetic gap, respectively, characterized in that: Before the two ferrite blocks are bonded together at the joining surfaces, the metallic magnetic film is formed on at least one of the opposite portions of the joining surfaces, such that the width of the film is no less than the width of the track portion, and is no more than the width of the yoke portion.

REFERENCES:
patent: 3514851 (1970-06-01), Perkins et al.
patent: 4078300 (1978-03-01), Lazzari
patent: 4100584 (1978-07-01), Behr et al.
patent: 4815197 (1989-03-01), Ota et al.
patent: 4899241 (1990-02-01), Miyakawa et al.
patent: 5013394 (1991-05-01), Rolland et al.

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