Chuck arrangement for a floppy disk drive for accurately and pos

Details Chuck arrangement for a floppy disk drive for accurately and pos Chuck arrangement for a floppy disk drive for accurately and pos

1997-10-15

1999-05-18

Davis, David D.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

G11B19/20

Patent

active

059056053

ABSTRACT:
A hub base 1, having a height not larger than 4.5 mm from an upper surface of a copper foil on a printed circuit board 5, is fixed with a rotor frame 2. A medium holding magnet 3 is provided around hub base 1 and integral with rotor frame 2. A leaf spring 6 is swingably supported on rotor frame 2. A drive pin 8 is mounted on leaf spring 6. An index magnet 10 is integrally formed with rotor frame 2. A magnetization pattern applied on medium holding magnet 3 is in-phase with a magnetization pattern applied on index magnet 10. An upper end of index magnet 10 is positioned lower in height than a top of medium holding magnet 3 which protrudes from an upper surface of rotor frame 2.

REFERENCES:
patent: 5121272 (1992-06-01), MaeKawa et al.
patent: 5247409 (1993-09-01), Sakaguchi
patent: 5257152 (1993-10-01), Nagase
patent: 5469421 (1995-11-01), Aruga et al.

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