B/disk drive apparatus with thermally compensated stacked disk s

Details B/disk drive apparatus with thermally compensated stacked disk s B/disk drive apparatus with thermally compensated stacked disk s

1993-06-29

1999-03-23

Ometz, David L.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 9912, G11B 5012, G11B 2504

Patent

active

058868526

ABSTRACT:
A disk drive apparatus includes a spindle motor which has a rotatable hub. The hub has an annular flange. A magnetic disk is fitted on the hub and urged against the flange by a clamp with a predetermined fixing force. A buffer member is interposed between the magnetic disk and the engagement portion. The buffer member has a thermal expansion coefficient which is substantially a intermediate value between thermal expansion coefficients of the magnetic disk medium and the engagement portion. A difference between the thermal expansion coefficients of the magnetic disk and the

REFERENCES:
patent: 4498165 (1985-02-01), Wilkinson, Jr.
patent: 4814652 (1989-03-01), Wright
patent: 4910620 (1990-03-01), Olbrich
patent: 4945432 (1990-07-01), Matsudaira et al.
patent: 5031062 (1991-07-01), Wood et al.
patent: 5101306 (1992-03-01), Johnson

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