CREATION OF GRAPHIC IMAGES ON A DATA DISC

摘要

An improved method of making an optical disc comprises the steps of exposing a photoresist glass master to a laser beam for recording data on an information area of the master, subjecting the master to a second graphic exposure and subsequently developing, metallizing and electroforming the master to form a stamper which can be used to produce optical discs by injection moulding. The areas of the master which are subjected to the graphic exposure are located both within and outside the information area and are so arranged that the exposed areas within the information area do not interfere with or cause data error during playing of an optical disc produced from the master. In this way, the whole of the playing area of an optical disc can be covered with printed or graphic information.