IP Library › Patent Application 11190860
Patent Application
App. No. 11/190,860

Magnetic disk cartridge

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Quick Facts
Patent No.
US None
App. No.
11/190,860
Abstract

A magnetic disk cartridge including a flexible magnetic disk, a hub, disk-holding protrusions, and an anti slip-out member. The hub has a disk-holding surface on which the central portion of the magnetic disk is held. The disk-holding protrusions are formed on the disk-holding surface of the hub, and are inserted through holes formed in the magnetic disk. The anti slip-out member is used to prevent the magnetic disk from slipping out from the disk-holding protrusions.

Claims (12)

1 .- 8 . (canceled)

9 . A magnetic disk cartridge comprising:

a flexible magnetic disk with a center hole;

a hub equipped with a center hole, and a disk-holding surface on which the central portion of said magnetic disk is held; and

a disk-clamping member comprising

a cylindrical portion which is fitted in the center hole of said hub through the center hole of said magnetic disk, and

a flange portion formed in one end of said cylindrical portion, and equipped with a disk press surface for mechanically holding said magnetic disk on the disk-holding surface of said hub.

10 . The magnetic disk cartridge as set forth in claim 9 , wherein the outer periphery of the cylindrical portion of said disk-clamping member is provided with recesses that are filled with an adhesive before insertion to the center hole of said hub.

11 . The magnetic disk cartridge as set forth in claim 9 , wherein said hub is formed from a soft magnetic material that can be attracted to a spindle of a disk drive unit by a magnet mounted on said spindle when said magnetic disk cartridge is inserted in said disk drive unit, and

said disk-clamping member is formed from a soft magnetic material that can be attracted to the disk-holding surface of said hub through said magnetic disk as said hub is attracted to said drive spindle.

12 . The magnetic disk cartridge as set forth in claim 11 , wherein the disk press surface of said flange portion has a friction sheet that prevents said magnetic disk from slipping on said flange portion.

13 .- 20 . (canceled)