A master disc is used and copies of that are made through the burning process. The media can then either be printed. There are a few different ways the media can then be printed but at Implant we offer 3, direct to disc inkjet, Black Thermal Film and in special circumstances, we can screen-print the discs. The method used will depend greatly on your artwork, but the vast majority of discs are direct to disc inkjet printed as this produces vibrate colourful discs with the easiest to set up artwork.
The replication process involves moulding disc with data rather than burning them. A plastic polymer is injected moulded with a polycarbonate that is stamped with a glass master that has been created in the master process to transfer the data onto the media. These discs can then be printed either through screen-printing or offset printing. The completed process is quite complex and more information on it can be found here. Unless it is used by yourself, a duplicated disc will need to be marked or labeled somehow.
You can do that in many ways. Once a label is printed, you can peel it off and put it to a label applicator with the sticky side facing up. The non data side of the disc is then pushed against the applicator. Air bubbles on the label need to be rubbed off immediately otherwise they will be there permanently. When you print the labels, make sure to match the paper profile for your printer. For example, if you are using the Epson printers, choose the right paper type when you print the labels.
One disadvantage of using paper label on CD or DVD is that the label adds to the thickness of the disc. When combining the thickness of the CD-R or DVD-R itself with the paper label, the overall thickness would probably be thicker then the designed specifications. Although most disc readers have the ability to re-read when there is error, this would definitely reduce the reading reliability. These pre-printed CDR or DVDR blanks are then duplicated or burnt one at a time on either automated duplicators or towers containing as many as 11 burners and one reader.
This helps create a more reliable copy and reduces wastage during the duplication process. As the print options for recordable DVDR and CDR are very similar to those available for replicated discs it is sometimes difficult to spot the difference between the two if only looking at the print side. However the data layers of most recordable discs have a very distinctive appearance, with DVDR typically being a dark purple hue and CDR often a pale turquoise or slightly see through silver.
Replicated discs however, both CD and DVD, have an aluminium coating applied to the data layer for protection which gives a solid metal appearance to this side.
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