Dynamic magnetic information storage or retrieval – Head – Core
Patent
1982-07-29
1987-08-04
Wolff, John H.
Dynamic magnetic information storage or retrieval
Head
Core
29603, 156643, 156668, G11B 5147
Patent
active
046850147
ABSTRACT:
In producing a magnetic head by thin film technique, a magnetic film is formed on an insulating member covering coil conductor films after the surface of the insulating member is flattened. After a flattening coating is formed on the insulating member, the flattening coating as well as the insulating member are etched by plasma-assisted etching technique in order to flatten the surface.
REFERENCES:
patent: 4025411 (1977-05-01), Hom-ma et al.
patent: 4052749 (1977-10-01), Nomura et al.
patent: 4242710 (1980-12-01), Hempstead et al.
patent: 4281357 (1981-07-01), Lee
patent: 4295173 (1981-10-01), Romankiw et al.
patent: 4429337 (1984-01-01), De Wilde
IBM Disk Storage Tech., D. Thompson et al, "Film Head Development", Feb. 1980, pp. 3-4.
Akiyama Hirosi
Hanazono Masanobu
Hara Shin-ichi
Hayashi Masaaki
Kurisu Takumi
Computer Basic Technology Association
Severin David J.
Wolff John H.
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