Patent ID: 6384502
Filing Date: 2002-05-07
Classification: G11B,H02K

Abstract:
A diskette comprising:a diskette case; a hub provided inside said diskette case that is drivable by an external drive mechanism; and a permanent magnet generator provided inside said diskette case, said permanent magnet generator including i) a rotor that is rotatably drivable by said hub, said rotor having a rotatable permanent magnet, said permanent magnet having a plurality of magnetic poles arranged on the outer periphery thereof, said magnetic poles having alternately different polarities in the circumferential direction, and ii) a stator having a plurality of stator magnetic pole teeth, said plurality of stator magnetic pole teeth each having a stator magnetic pole at an end thereof at a location where said stator magnetic pole can face one of said rotor magnetic poles across a magnetic gap, each of said plurality of stator magnetic pole teeth extending outwardly from said stator magnetic pole and having a stator coil wound thereon, wherein said rotor and said stator are formed into a flat disk shaped assembly, and a rotation transmitting mechanism for connecting said hub to said rotor of said permanent magnet generator is provided inside said diskette, and said rotation transmitting mechanism being a speed increasing mechanism.