Rotary head type magnetic recording/reproducing device

Details Rotary head type magnetic recording/reproducing device Rotary head type magnetic recording/reproducing device

1990-01-12

1991-04-16

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Head

Head accessory

G11B 1560

Patent

active

050087690

ABSTRACT:
A rotary head type magnetic recording/reproducing device includes a stationary drum, and a rotary drum disposed coaxially with the stationary drum and secured to the rotary shaft of the motor. The rotary drum has a cylindrical portion which is slightly greater in diameter than the stationary drum, a first truncated cone portion integrally connected to the cylindrical portion at a bottom thereof and decreasing in diameter in a direction toward the stationary drum at a first taper angle, and a second truncated cone portion integrally connected to a top surface of the first truncated cone portion at a bottom thereof and decreasing in diameter in the direction toward the stationary drum at a second taper angle which is greater than the first taper angle.

REFERENCES:
patent: 4959743 (1990-09-01), Koichi
Patent Abstracts of Japan, vol. 10, No. 34, p. 427, Kokai No. 60-182041.
Patent Abstracts of Japan, vol. 9, No. 246, p. 393, Kokai No. 60-98556.
Patent Abstracts of Japan, vol. 11, No. 153, p. 577, Kokai No. 61-289518.

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