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2.2 Specifications of Optical Disk Cartridges
C156-E228-02EN 2-9
The following explains the components of the optical disk cartridge shown in
Figure 2.1.
1) Cartridge case
The disk housing is provided to protect the disk from damage when handling
it, and facilitates replacement of the disk.
The cartridge case has a label and a write protect tab on it.
2) Shutter
The shutter protects the disk from contamination. This metallic door opens
when the cartridge is inserted into the optical disk drive.
3) Write protect tab
Slide the write protect tab to enable or disable writing to the disk.
4) Disk
Stores data that can be read or written using a laser beam.
5) Hub
The hub is the central disk part to be connected to the spindle of the optical
disk drive.
The hub is used for radial centering and axial positioning.