Optical discs with cover sheets and pressure equalization of the

Optical disk

Optical disk

Optical disk

Optical disk and apparatus for manufacturing the same

Optical disk carrier with write-protect mechanism

Optical disk cartridge

Optical disk cartridge

Optical disk cartridge

Optical disk cartridge

Optical disk cartridge

Optical disk cartridge and cooperating apparatus

Optical disk cartridge assembly

Optical disk cartridge having disk thickness sample plate

Optical disk case assembly

Optical disk data storage cartridge system having hinged disk re

Optical disk identifying method, manufacture of cartridge-enclos

Optical disk protector and method of use

Optical disk substrate and optical disk using the same

Optical disk with reinforcing plate