Method of forming gaps in magnetic heads

Details Method of forming gaps in magnetic heads Method of forming gaps in magnetic heads

1978-05-08

1980-01-08

Goolkasian, John T.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

29603, 65 43, 156295, 156309, 156325, 360119, 360120, 360121, 427127, 428432, 428539, 428900, C25D 100

Patent

active

041826434

ABSTRACT:
A magnetic head is manufactured by depositing a layer of spacer material onto the facing surfaces of the magnetic cores; the thickness of each layer being approximately one-half the length of the intended gap and the thicknesses of both layers together being approximately equal to the thickness (length) of the gap. A layer of bonding glass is deposited onto the surfaces of the spacer layers and the cores are pressed together at an elevated temperature to fuse the glass layers and extrude most of the glass.

REFERENCES:
patent: 3333332 (1967-08-01), Vrolijks et al.
patent: 3395450 (1968-08-01), Koorneef et al.
patent: 3452430 (1969-07-01), Van Langen et al.
patent: 3458926 (1969-08-01), Maissel et al.
patent: 3605258 (1971-09-01), Fisher et al.
patent: 3656229 (1972-04-01), Sakurai et al.
patent: 3767497 (1973-10-01), Sommer
patent: 3948657 (1976-04-01), Yoshikawa et al.
patent: 4048714 (1977-09-01), Huntt

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