Method of making a magnetic head

Details Method of making a magnetic head Method of making a magnetic head

1980-02-19

1981-09-08

Weisstuch, Aaron

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204298, 29603, C23C 1500

Patent

active

042883075

ABSTRACT:
In a method of making a magnetic gap by depositing a glass layer on a surface of magnetic head core materials by cathodic sputtering of a glass target and cementing a pair of the resulting glass-coated magnetic head core materials, the improvements constituted by monitoring the thickness of the sputtered glass layer by an interference of a light beam guided onto a surface of the magnetic head core materials during the deposition and using a sputtering apparatus having a sample holder beside the target for securing the magnetic core materials and a mask plate for achieving uniform thickness of the sputtered glass layer.
The method makes possible production of magnetic heads having excellent electromagnetic conversion characteristics with high accuracy.

REFERENCES:
patent: 3775277 (1973-11-01), Pompei et al.
C. W. Pitt et al., "Automatic Monitoring of Deposition Conditions During RF Sputtering of Dielectric Materials", Vacuum, vol. 25, pp. 265-221, (1975).

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