As the discs manufacturers and different materials used for the recording disc recording layer (also called dye layer) of the material differences also affect the disc's high-speed recording, different players, the compatibility between the disc and burn disc entire life. Even the same manufacturer may use different materials on the market the disc. CD-R market at present a blank CD in the recording layer of organic dye used is divided into three types: Cyanine, Phthalocyanine and AZO. Because these three organic dyes have their own colors, plus the color combination of reflector, will film in the CD-R disc data surface mapping out the different colors. Therefore, we generally different color CD-R discs, known as the green plate, gold plate, blue plate ... .... Because the use of different organic dyes, these CD-R discs in performance and price are different. Following a brief introduction on to tell us the differences between them.
1. Green Disk (Cyanine)
Cyanine by Taiyo Yuden (Taiyo Yuden) invented, is the prototype of the other two materials, materials, after Phthalocyanine and are based on Cyanine improvements AZO formed. In other words, first, Cyanine, and then only Phthalocyanine and AZO.
Cyanine blue as a blue light-sensitive chemicals, and the reflective layer of gold color mixed, will form a dark green in the data plane or blue-green, so as the raw materials used Cyanine CD-R discs known as the green disc. However, the original material is very afraid of Cyanine light, are photosensitive material in the manufacture of synthetic must add appropriate iron metal to reduce the ability of light sensors. Based on dye their defects, a new generation of green light-sensitive material plate strengthened anti-optical, CD film that enhanced the preservation of nature, such as gold plate so as to have a longer shelf life, because raw materials are lighter in color, appearance Condition is very close with the gold plate, so many people call it green gold disk (or silver plate).
Green produced the first disc is a Taiyo Yuden Company, so the launch of That's the green plate, was used as the basic test disc recorder. Means that, if you use That's Green disc burning problem still occurs, then the disk probably is not burning, but burning machine or system problem.
2. Blue plate (AZO)
Verbatim AZO dyes in the early representatives of the company by Verbatim's parent company - Mitsubishi Chemical Corporation (Mitsubishi Chemical Company) is responsible for production. Blue CD-R discs of AZO films by metal organic dye materials with low reflective layer made of silver. As the metal of AZO dye itself dark blue, white and silver reflection layer with the formation of the blue data plane, it is called the blue plate.
Since Mitsubishi Verbatim is a subsidiary of the company invented blue disk, so there is only two of the real blue plate. Early AZO material can only use a single speed or double speed burner, while not successfully used in high-speed (4x or more) of the recorder used. However, when DataLifePlus CD-R discs was published, Verbatim Corporation announced this new formulation of AZO CD-R discs to overcome the speed bottleneck, has been able to 4x burner to use.
3. Gold Disk (Phthalocyanine)
Gold plate is improved by the green disk from the gold plate is generally considered the most advanced CD-R discs. But now the golden plate prices have sharply declined to less money a few, really can be said to be inexpensive. Gold Disk using organic dyes as Phthalocyannine, this organic dye itself is nearly transparent to light yellow, while the use of pure gold reflective layer, reflective layer of gold mixed with the following literacy leaving it cash in yellow. Since the stability of gold plate and plates better than others, and has good read rates, early CD-ROM drive can identify such a smooth disc. So most people get this CD-R discs to back up data.
Produce the first gold disc is Mistui Toatsu (Mitsui) Company, and thus Mistui Toatsu gold plate with a wide range of users. And Mitsui have to do someone else's OEM disk, like the early Kodak, HP, Philips gold plate are Mitsui do. In addition, Kodak's Gold Disk also "Infoguard" patent technology, which is coated with a layer of the top disc special material to better protect the discs from corrosion and oxidation. However, because the cost of gold plate is too expensive, so fewer and fewer companies in the production, and manufacture of such discs manufacturers are only Mitsui Toatsu and Kodak, even such a giant Kodak has also started to give up the production of gold plate.
Phthalocyanine dye has better resistance than the light of Cyanine, also has high stability, is a CD-R to save the oldest one. After a long period of preservation are not easily generated mutation, so manufacturers have to publicize the data storage of up to a century masterpiece.
4. Platinum disk (Phthalocyanine)
In fact, the so-called platinum disc, there are no platinum, no gold, just a little white in color with gold. It is used as dye and gold plate is Phthalocyanine, but the use of silver as reflective layer, such as platinum color will show. Platinum plate and gold plate is very close to nature, preserve a long time, good compatibility with the recorder, cheap. Several integrated features above, you can know that can not afford to use one gold plate, platinum plate is a good choice, generally take platinum disk backup data are, of course, was brought carved VCD, this of course can only be to see how the use of individuals only.
Currently, many manufacturers made the long drive platinum disc, such as our common 700MB, or 800MB of CD-R, CD-ROM for the average family that some of the data backup, network, download a small program should be enough.
5. Ocean blue plate (Cyanine)
Since there is a real blue plate, the latest on the market should drive it more often see the ocean blue! Ocean blue and green disc set is the same as organic dyes are Cyanine, but the reflection layer to switch to silver, so it also became a combination of a light blue plate. The reflective layer from the gold into silver while the birth of ocean blue plate, the biggest advantage is lower prices, after all, gold is still more expensive than silver. Nevertheless, freshwater blue disc compatibility is very good, in fact we now see is that the majority of Blu-ray disc drive.
To facilitate the convenience of you remember, we have listed the following formula:
* Set = gold reflective layer green + blue blue Cyanine dye
* Ocean blue silver reflector disc = blue Cyanine + blue dye
* Gold plate + yellow = gold reflective layer of Phthalocyanine dye
* Platinum Silver reflector disc = light yellow Phthalocyanine dye +
* Blue = silver reflector disc + dark blue AZO dye
Miu Miu posted: CD-RW discs and CD-R discs is slightly different, CD-R disc's recording layer is a film of organic dyes used, the CDRW is used in a different material. Such material is made from silver, antimony, tellurium, indium metal film composed of a variety of metals. This material has two kinds of crystalline and amorphous state, these two states to the laser reflectivity is very different. Crystalline and amorphous as changes in the state belong to the physical changes, you can revert to a previous state, it can be repeated to write the same location. However, because current technology conditions, it can erase about 1000 or so.
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