Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1985-09-05
1987-11-24
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
36013024, G11B 552
Patent
active
047092874
ABSTRACT:
A head height adjustment construction in a magnetic recording and reproducing apparatus with a rotary cylinder for use in a VTR, for example, includes a lower fixed drum, an upper rotary drum axially spaced from and rotatable with respect to the lower fixed drum, the upper rotary drum having a tapered surface slanted upwardly in a radially outward direction thereof, a head attachment plate having one end mounted on the upper rotary drum and supporting a head on an opposite end thereof, and an adjustment screw threaded in the upper rotary drum and held against the head attachment plate. When the height of the head is to be adjusted, the adjustment screw is turned about its own axis for spacing the opposite end of the head attachment plate away from the tapered surface. After the head height has been adjusted, a surface of the head which is held in sliding contact with a magnetic tape is directed upwardly toward a plane in which the upper rotary drum is rotatable.
REFERENCES:
patent: 4080639 (1978-03-01), Gunschmann
patent: 4363047 (1982-12-01), Maruyama
patent: 4507696 (1985-03-01), Hutter
Alps Electric Co. ,Ltd.
Heinz A. J.
Shoup Guy W.
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