Optical information record disk
Optical information record member
Optical information recording medium
Optical information recording medium having protective layer
Optical information storage medium
Optical medium
Optical protuberant bubble recording medium
Optical record blank and information record
Optical recording and information elements
Optical recording and reproducing disc
Optical recording carrier
Optical recording disc
Optical recording disc
Optical recording disc and related method of manufacture
Optical recording disk
Optical recording element and its manufacturing method
Optical recording media
Optical recording medium
Optical recording medium
Optical recording medium