Disc chucking mechanism and disc drive apparatus having the...

Details Disc chucking mechanism and disc drive apparatus having the... Disc chucking mechanism and disc drive apparatus having the...

2007-05-15

2007-05-15

Cao, Allen (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Optical storage medium support

C720S715000

Reexamination Certificate

active

10864294

ABSTRACT:
A disc chucking mechanism is provided. The disc chucking mechanism includes: a central shaft that served as a motor shaft of a spindle motor; a table section, which is fixed to the central shaft and on which the inner circumferential section of a disc-shaped recording medium is placed; a chucking pulley for sandwiching the internal circumference portion of the disc-shaped recording medium together with the table section; a centering protrusion, which is movably supported by the central shaft in the shaft direction and inserted into a central hole of the disc-shaped recording medium, for centering the disc-shaped recording medium; a forcing means for forcing the centering protrusion to a direction away from the table section in the shaft direction of the central shaft; and a separation-stop shaft having a separation-stop section, which is positioned such that the separation-stop section is substantially parallel to the central shaft.

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