New Product: 2P Dual-Layer
- Capacity: 8.5 gb
- Speed: 8x
- Model No: 3040106500010368
- Surface: White Inkjet Full Surface, For All Inkjet Printers
- Dye: Organic, Azo Dye
- Manufacturing Process: Photo Polymerization “2P”
- Hub Printable: Yes
- Packaging: 50 Cake Box
- Box Quantity: 300
The 2P manufacturing process represents the best choice for data recording accuracy and drive compatibility.
The manufacturing process of DVD Dual layer discs requires additional production steps compared to single layer DVD+/-R discs. There are two different methods of manufacturing DL discs in use today: the 2P process and the inverse stack process (IS). The names are derived from the process used to define the second layer structure. 2P is an abbreviation for Photo Polymerization, the step where the groove of the second layer is defined in a UV-curable resin. The inverse stack process refers to the manufacturing of a disc where the substrate and the dummy are bonded together as in a single layer DVD disc, but where the dummy contains the second recording layer in which the sequence of applying the reflector and the dye material is inverted compared to the first recording layer.
Drive compatibility of 2P and IS:
Both layers of 2P are similar in groove shape and dye coverage. Each of these layers behaves very similar to standard
DVDR SL and thus the drive tuning is more or less straightforward. In IS discs, the shallow groove and the
difference in dye coverage at L1 require special tuning for write strategy and groove tracking. Due to this
difference between 2P and IS, any default write strategy designed for 2P discs will not work on IS disc in
drives where a particular inverse stack MID code is not supported.
Blank Media & Packaging Specialists Tel: 0208 311 7077
Optical Media 
