Video tape recorder including vertical recording heads

Dynamic magnetic information storage or retrieval – Record transport with head moving during transducing – Tape record

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Details

360 64, 360108, 360110, 360125, G11B 5027, G11B 5127, G11B 552, G11B 2104

Patent

active

046427112

ABSTRACT:
A helical scanning type video tape recorder includes a rotary cylinder which is slidable on a video tape; and a pair of vertical magnetization recording heads mounted on the peripheral wall of the rotary cylinder at prescribed positions. The plane of the vertical magnetization recording heads which faces the magnetic plane of the video tape is provided with a main magnetic pole and auxiliary magnetic pole, thereby causing at least one portion of the recording magnetic flux passing from the auxiliary magnetic pole to the main magnetic pole to penetrate the recording magnetic layer of the video tape at substantially right angles.

REFERENCES:
patent: 2743318 (1956-04-01), de Forest
patent: 2889414 (1939-06-01), Gratian et al.
patent: 3202771 (1965-08-01), Wada
patent: 3384881 (1968-05-01), Frost et al.
patent: 3454727 (1969-07-01), Siera et al.
patent: 4138702 (1979-02-01), Magnenet
patent: 4253127 (1981-02-01), Kodama et al.
patent: 4277809 (1981-07-01), Fisher et al.
patent: 4296430 (1981-10-01), Warren
patent: 4383284 (1983-05-01), Isshiki
patent: 4385334 (1983-03-01), Yanagida
patent: 4441131 (1984-04-01), Osanai
patent: 4562503 (1985-12-01), Fujioka et al.
Patents Abstracts of Japan, vol. 7, No. 164 (P-211) 1309, Jul. 19th, 1983 (JP-A-58-70414).
"Electronics"--pp. 131-135, Sep. 22, 1982.

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