| 摘要 |
<p>The present invention provides a process for producing an optical disc substrate by injection-molding a melted resin, through a nozzle (22) of an injection cylinder (20), into a cavity (50) of a mold having a stamper (40) at at least one of a cavity side part (10) and a force side part (30), a process in which at least a face of the nozzle (22), which contacts the resin, is coated with an inorganic coating such as TiN, BC (boron carbide) or DLC (diamond-like carbon). <IMAGE></p> |
