Dynamic magnetic information storage or retrieval – Record medium – In container
Patent
1992-10-16
1994-10-25
Levy, Stuart S.
Dynamic magnetic information storage or retrieval
Record medium
In container
G11B 2303
Patent
active
053594835
ABSTRACT:
A lifter for cleaning a flexible magnetic recording disc. The lifter forces a fabric liner on the inner surface of a cartridge toward the rotating disc. The perimeter of the lifter is configured so that the force profile of the lifter taken across the width of its leading edge is not characterized by sudden changes in force across its width. The lifter can include a cut-out region within the area of the lifter, the region being configured to increase the force applied by the lifter along the inner tracks of the magnetic recording disc. The lifter does not significantly increase the torque required to drive the disc. The invention also includes a method of cleaning a disc using the lifter described above.
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Diagrams dated Dec. 12, 1991 showing Fuji and TDK lifter designs (2 pages).
Arsenault Cathleen M.
Donaldson Eric J.
Swanson John W.
Griswold Gary L.
Kirn Walter N.
Levinson Eric D.
Levy Stuart S.
Minnesota Mining and Manufacturing Company
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