Magnetic disk drive having balanced magnetic disk mounted on rot

Details Magnetic disk drive having balanced magnetic disk mounted on rot Magnetic disk drive having balanced magnetic disk mounted on rot

1994-04-06

1996-11-05

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

73459, G11B 1708

Patent

active

055723829

ABSTRACT:
A magnetic disk drive comprises a motor having a substantially cylindrical rotor, and three magnetic disks each having a center hole in which the rotor is inserted, and fitted on the outer circumferential surface of the rotor. The magnetic disks are displaced in a direction along the diameter of the rotor so that the inner circumferential edge of each magnetic disk defining the center hole is pressed against the outer circumferential surface of the rotor. The magnetic disks are fixed to the rotor by a fixing member mounted on the rotor. A counterweight for correcting the balance of the magnetic disk in rotation is mounted on the fixing member in the vicinity of that region of the outer circumferential surface of the rotor against which the inner circumferential edges of the magnetic disks are pressed.

REFERENCES:
patent: 4561035 (1985-12-01), McDorman
patent: 4563824 (1986-01-01), Baun
patent: 4683505 (1987-07-01), Schmidt et al.
patent: 4754351 (1988-06-01), Wright
patent: 4933927 (1990-06-01), Ross
patent: 5043973 (1991-08-01), Ocheltree et al.
patent: 5130870 (1992-07-01), Jabbari
patent: 5214326 (1993-05-01), Yonei
patent: 5216304 (1993-06-01), Ohta

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