Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Disk record
Reexamination Certificate
2005-11-01
2005-11-01
Renner, Craig A. (Department: 2652)
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Disk record
Reexamination Certificate
active
06961215
ABSTRACT:
A disk drive device includes a recording medium, a head slider having a head element for recording data on the recording medium and for reading data recorded on the recording medium, a spindle motor for rotating the recording medium, and a clamp for applying a pressing force to the recording medium to fasten the recording medium to the spindle motor. The disk drive device has a feature in which a film body formed from a material which is more pliable than a material forming the clamp is interposed between the clamp and the recording medium. Even if the clamp does not have a high flatness, the film body absorbs irregularities of the clamp. Thus, it is possible to fasten the recording medium with the clamp while apparently keeping flatness.
REFERENCES:
patent: 4945432 (1990-07-01), Matsudaira et al.
patent: 6462903 (2002-10-01), Yamada et al.
patent: 2158633 (1985-11-01), None
patent: 62257615 (1987-11-01), None
Hashizume Masataka
Shinohara Ryohsuke
Bracewell & Giuliani LLP
Hitachi Global Storage Technologies - Netherlands B.V.
Renner Craig A.
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