Method of producing a core for magnetic head

Details Method of producing a core for magnetic head Method of producing a core for magnetic head

1990-09-10

1991-08-20

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156656, 21912168, 21912169, 252 795, B23K 2600

Patent

active

050411896

ABSTRACT:
A composite core for magnetic head composed of ferrite and Sendust, in which a difference between a track width of ferrite track and a track width of Sendust track is so small can be obtained by subjecting a gapped bar composed of ferrite and Sendust to a laser-induced etching in an alkali metal hydroxide aqueous solution into which additives for generating aluminate ion in the aqueous solution.

REFERENCES:
patent: 2869267 (1959-01-01), Holman
patent: 3300349 (1967-01-01), Tershin et al.
patent: 3356550 (1967-12-01), Stiffler et al.
patent: 3475241 (1969-10-01), Zelley
patent: 4948460 (1990-08-01), Sandaiji et al.
patent: 4982065 (1991-01-01), Sandaiji et al.

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