Dynamic magnetic information storage or retrieval – Head – Core
Patent
1985-07-29
1988-06-14
Tupper, Robert S.
Dynamic magnetic information storage or retrieval
Head
Core
360123, 360119, G11B 5147, G11B 517
Patent
active
047515996
ABSTRACT:
A thin-film magnetic head is composed of a lower magnetic layer, a first insulating layer, a coil conductor, a second insulating layer, a gapping layer disposed on the second insulating layer and having an end exposed for sliding contact with a magnetic recording medium for recording signals on and reproducing signals from the magnetic recording medium, and an upper magnetic layer disposed on the gapping layer. The coil conductor has a plurality of turns including an outermost turn having a portion which is closest to the end of the gapping layer and which has a width larger than that of each of the other turns. The coil turns may also include an innermost turn having a portion which is remote from the end of the gapping layer and which has a width larger than that of each of the other turns except the portion of the outermost turn.
REFERENCES:
patent: 3987488 (1976-10-01), Kanai et al.
patent: 4246620 (1981-01-01), Kaminaka et al.
patent: 4295173 (1981-10-01), Romankiw et al.
patent: 4458279 (1984-07-01), Katz
patent: 4652957 (1987-03-01), Schewe et al.
IBM Technical Disclosure Bulletin, vol. 15, No. 7, Dec. 1972, Laminated Multiturn Magnetic Head, Jones et al.
Fuji Photo Film Co. , Ltd.
Razzano Pasquale A.
Sniezek Andrew L.
Tupper Robert S.
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