| 摘要 |
Injection mould for forming an optical data storage disc, said mould having two halves (1, 2) moveable one against another, the mould being provided with a stamper holder (5), comprising a body having a through bore and an inwardly directed flange used as a stop for an exchangeably held stamper (3), said stamper (3) having a complementary pattern of the data to be stored at the optical storage disc to be manufactured, and with a centre clamp (4) for holding said stamper (3) in the central region, one half (1) being provided with a mirror ring (7), limiting a cavity in co-operation with the stamper (3) and a mirror (16) bearing said mirror ring (7), when said mould is closed, and with an injection nozzle (18). To enable an automatic change of the stamper (3) at least two axially moveable bolts (10, 14) are provided, said bolts (10, 14) are guided in different halves (1, 2) in a plane running in the main in a radial direction and said stamper holder (5) being provided with at least one recess (19, 20) at its outer generated surface, provided to receive said bolts (10, 14), whereby said stamper holder (5) is held during operation of the mould by at least said bolt(s) (10) guided in that half (2) opposite said injection nozzle (18). <IMAGE> |
