Main print area – as the name suggests, this is the main area on the disc for the artwork to be printed.
Mirrorband – this is the area between the main print area and the clear stacking ring. The silver color is usually a tone or two darker than the silver in the main print area. This is also where the stamper text, information about the glass master of the project, in the form of alphanumerical codes, will be printed.
Stacking ring / clear hub – this is the clear plastic area in the near the inner most part of the disc which can be printed. Usually the inner ring is set at 22-26mm depending on the type of disc (CD or DVD) and the machine.