Optical disc medium and data recording method and apparatus

Abstract

A molding and film forming apparatusmolds a disc substrate from a stamperformed from an optical disc disc-masterand forms a coating film, for example, a reflective film onto the disc substrate, thereby forming a recorded optical disc. A postscript apparatuswrites postscript information once onto an optical discformed by the molding and film forming apparatus. As postscript information, a laser beam is irradiated to a predetermined interval of the optical disc, a portion which is detected as a pit is formed, and an optical discon which postscript informationhas been recorded is formed. Identification information which enables each optical discto be identified can be postscribed. The postscript information is recorded in a conventional format and the postscript information can be reproduced by an existing reproducing apparatus.