Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1997-08-15
2000-07-18
Letscher, George J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 555
Patent
active
060915781
ABSTRACT:
A disk drive system includes a base, a disk rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly moves the transducer to selected areas of the disk where information representative of data is to be written or read. The actuator assembly maintains the transducer in a transducing relationship with the disk. The actuator assembly also includes an arm which has a first layer of material including a plurality of elongated fibers orientated in a first direction, and a second layer of material including a plurality of elongated fibers orientated in a second direction. The first and second layers are part of a composite material. The transducer is attached to said arm. The resulting actuator arm has a resonant frequency that can be varied or moved or shifted by varying the direction of the elongated fibers in the second layer with respect to the direction of the elongated fibers in the first layer. The resonant frequency is varied so that it is at a different frequency than the resonant frequency peaks associated with the other components of the disk drive, such as the resonance frequency of the disk or disks of the drive and the head suspension assembly (HSA). The arm may also include signal-carrying wires which are positioned between the layers of the composite arm and heat conductive fibers to remove heat from a heat producing source, such as from a chip on the arm.
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patent: 5283704 (1994-02-01), Reidenbach
patent: 5333003 (1994-07-01), Archer
patent: 5424596 (1995-06-01), Mendenhall et al.
patent: 5627701 (1997-05-01), Misso et al.
Adley James M.
Stole Scott M.
Letscher George J.
Questek Innovations, Inc.
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