Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1987-03-09
1988-07-26
Wolff, John H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
310 13, G11B 555, G11B 2108
Patent
active
047604808
ABSTRACT:
A head access mechanism of the magnetic disk memory device for memorizing information by means of a rigid or flexible magnetic disk. The head access mechanism is equipped with a moving-coil type linear motor comprising an E-shaped yokes with two magnetic gaps and a movable coil. The yokes are arranged so as to produce the two magnetic gaps side by side on the extension itself of the plane of placement of the magnetic disk and/or plane parallel to it, with their openings opposing the magnetic disk. Magnets are installed on each of the magnetic gaps to align the magnetic flux toward the central yoke of the yokes. A movable coil is wound through the two magnetic gaps encircling repeatedly around the central yoke on which an indentation is provided, which extends parallel to the magnetic gaps. A carriage, which is housed mobile in side indentation and joined to said movable coil, supports the magnetic heads so as to restrain the magnetic coil, heads to be placed between the two magnetic loops that are formed by the pairs of magnets and the yokes.
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Bakken et al., "Self-Locating and Adhering Flux Shield," IBM TDB, Aug. 1983, vol. 26, No. 3B, pp. 1679-1680.
Kabushiki Kaisha Toshiba
Severin David J.
Wolff John H.
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