Machine-readable optical disc with reading-inhibit agent

Machine-readable optical disc with reading-inhibit agent

Machine-readable optical disc with reading-inhibit agent

Machine-readable optical disc with reading-inhibit agent

Magneto-optical recording medium and process for producing...

Method and apparatus for correcting focus in an optical recordin

Method and structure for intensifying track seeking signals...

Method for inputting information into a data storage medium...

Method of fabrication of a protected optical disk and a disk obt

Method of making an optical memory disk and a product thereby

Mold for manufacturing double-sided disk shaped articles for...

Multilayer optical disk and apparatus

Multilayered optical information-recording media laminated with