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The Process
An approved quality assured Stamper containing the user data information is used for making up the finished optical disc
   
The user data stamper is mounted in (A) moulds of the moulding system and conditioned polycarbonate granules are fed into the hopper of the injection screw
CD Replication
                                                        
The granules are heated to produce a moulton liquid plastic which is injected into the mould cavity and formed around the protruding pit structure on the stamper
                                                    
Cooling channels open the mould solidifying the moulton plastic into a 1.2mm solid polycarbonate disc, containing an exact reverse replica of the stampers pit structure
                                                   
The moulded disc is now placed in a high vacuum chamber where a thin layer of aluminium is laid down over the pit surfaces. This is called ‘Metalising’
                                                   
Metalising forms the reflective surface of the optical disc. (without this metal layer the laser light in the player will pass through the disc making it illegiable)
                                                   
A layer of UV lacquer is applied to the metallised side of the disc which is passed under a UV lamp to fix the lacquer and produces a finished 1.2mm bonded disc.
                                                   
The disc undergoes a physical inspection by camera to ensure the cosmetic criteria is within specification
                                                   
The approved finished discs are then stacked on a spindle ready for electrical and mechanical off-line testing as part of our quality control procedures
                                                   
Once approved the quality assured discs are ready for printing and packing
   
Size Storage Capacity
Standard CD Audio 640mb or 74 minutes playing time Possible CD audio 700mb or 80 minutes playing time
Standard CD Audio 640mb Maximum possible capacity 700mb
Enhanced discs are limited to 700mb maximum as a mixture of Audio and Rom