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The principle of the disc
2013-08-28 by seoer3
How cut off disc made ​​out of? Faced with this problem, many people may have no way to answer them. Our desktop computer, can be assembled in the form of manufacturing, such as the processor, memory, hard drives, motherboards and other accessories, installed in the chassis, on the formation of a computer. And a motherboard is through the circuit board wiring, patch, welding, plug-ins, and then welding procedure done. However, a thin disc, how does it in order to create out of it?
To understand disc manufacturing principles, we must first understand the structure of the disc, and its structure is closely related with the manufacturing process. As we all know, the disc is just a general term, it is divided into two categories, one is read-only discs, including CD-Audio, CD-Video, CD-ROM, DVD-Audio, DVD-Video, DVD-ROM, etc.; another a Class is a recordable optical disc, which includes CD-R, CD-RW, DVD-R, DVD R, DVD RW, DVD-RAM, Double layer DVD R and other types.
Depending on the disc configuration, the optical disc is divided into CD, DVD, Blu-ray disc types, these types of discs, the structure differ, but the principle is the same main structure. The read-only CD-ROM and CD recordable disc is no difference in the structure, the main difference in the materials they use and some of the different manufacturing processes, DVD side is the same reason. Now, let's use an example to explain the CD.
Our common CD-ROM is very thin, it is only 1.2mm thick, but it does include a lot of content. As can be seen from Figure 1, CD discs are divided into five layers including the substrate, a recording layer, a reflective layer, a protective layer, a print layer. Now, we will be described separately.
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