Before test burning discs, always in accordance with a specification, a grade of product to test, but this is difficult to some of the brand's full range of products, said the all-embracing, the market can often see a lot of discs, the brand, but Not every brand has its comprehensive product. Can be described as a very comprehensive product coverage brand discs, few, that is the Ryder technology, Ricoh technology, ACER, LG, Samsung and so few.
If you burn a disc from the principle of term it is nothing more than gold, green, and blue only, then I am afraid there will be a friend to ask, and currently on the market a lot of A burning dish, what ocean blue plate, platinum plate, color plate, black, purple, red, green, yellow, and not more than the above three kinds of A? if you first do not worry, let me give you analyze slowly.
In the recording disk just springs up, only the gold plate, green and blue plate plate divided. The main difference between these three discs is that they were using cyanine (Cyanine), phthalo cyanine (Phthalocyanine) and metallized azo (AZO) compounds, organic dyes in three different colors, so showing a CD-R discs green, gold, blue and three different colors.
From the principle of data recording and read, different colors of CD-R discs have the same function, namely the use of high-power laser beam focus of the thermal effect of laser irradiation of the dye to make micro cause irreversible physical and chemical changes, formation and CD-ROM optical disc pits the same reflective properties of the information pits.
1. Green Disk
Green disk is the first development and production of CD-R discs, using a Japanese company Taiyo Yuden invented cyanine dye Cyanine. Since color dyes and green blue, so with 24K gold reflective layer of gold mixed, will cause the CD-R disc's recording surface of the green.
As the CD-R standard (Orange Book) is based on the records of the dyes and sensitivity, recording threshold and reflectivity properties to develop such records, and all of the CD-R or CD-RW burner in accordance with Orange Book specifications of design and production, so the green plate on the various brands and models of CD-R or CD-RW burner compatibility stronger. Green set the dyes used in high sensitivity recording, various CD-R and CD-RW recorder can be set in the green recording layer formation of reliable information fast pit.
However, the ensuing question is too sensitive to strong light green disc, such as sun exposure at noon in the summer, the green disk occurs dyes physical and chemical changes resulting CD scrapped. In order to reduce the sensitivity to strong light green plate, green plate number of CD-R manufacturers in the addition of the dyes and photosensitive materials easily, resulting in pale color of the dyes, so that the color of green and gold plate plate close to , so the CD-R discs, also known as green gold disk.
2. Gold plate / platinum disc
Cyanine dyes for light-sensitive defects, Mitsui has developed a phthalocyanine dye based Phthalocyanine. Phthalocyanine dye itself is yellow gold mixed with the reflective layer, the so CD-R discs recorded leaving it golden color, the use of gold reflective layer of phthalocyanine dye is called CD-R disc gold disc.
In order to reduce the production costs of gold plate, many current CD-R disc production plant with a silver reflective layer, so that phthalocyanine dye of the yellow and silver reflective layer mixture, leaving it white gold to make records, so the CD-R known as the platinum disk drive.
Compared with the cyanine dye, phthalocyanine dye has a high stability, not for indoor and outdoor light-sensitive. Mitsui High temperature in 80 掳 C, 85% relative humidity under laboratory conditions, with light golden on the CD-R disc irradiation of 1,000 hours, and then on CD-R disc to burn money, and check the recording of data blocks error rate BLER (Block Error Rate).
Experimental results show that the burning of data block error rate BLER less than CD-ROM standard (Yellow Book) the minimum required BLER. Under such harsh conditions from the obtained experimental results can be inferred, CD-R gold disks life of more than 100 years.
Kodak and Philips companies were drawn from their experimental results of this inference, indicating that CD-R Gold Disk is suitable for reliable long-term preservation of data. Gold Disc on CD-R or CD-RW burner write laser power higher, phthalocyanine dye laser power is usually recommended to write to 6.5 (卤 0.5) mW, while the green plate on the written requirements of the lower laser power , write the dyes and laser power 5.5 (卤 1.0) mW. Therefore, the lower green disk write power and a wide power range can be reduced to the CD-R or CD-RW burner to write laser power requirements, greatly increased the green disc and CD-R or CD-RW burner compatibility .
3. Blue plate
To reduce the green CD-R disc and the cost of gold plate, development and production of Mitsubishi Chemical Corporation, a metallized organic AZO dye, and use the lower cost of silver for reflective layer materials. AZO itself is dark blue, so white and reflective layer of silver mixed, so that CD-R discs recorded leaving it blue, the use of CD-R AZO dye is called a blue disc tray.
CD-R blue disc in addition to low cost, but also has the advantage of the long term preservation of data. Verbatim's results show that the blue disc also has more than 100 years service life.
4. Color disc
Over time, the compatibility of the green disk itself is good, has the advantages of more and more popular, but the life of the green disk is the concern of the people, especially the blue-green disc and the disc tray on the relatively light and temperature sensitive to the sun's devastating for the disc.
Prolonged sun exposure will drive regional changes over a short golden yellow, then the entire film will be completely changed CD-R gold. Gold or platinum disc on the disc with excellent resistance to light of known.
Currently there are two terms for the color plate saying, a saying is: people will have been the basis of platinum plate was transparent color body with color plate to be used to enhance resistance to optical discs, and aesthetics.
Another argument is: As early as 1994, when the SONY PlayStation started out using a black plate. Analysis of the reasons, it may be due to a small black disk reflectivity than ordinary CD-ROM disc can better absorb the laser; the other hand, is to use a small amount of laser beam can be well-read results, thus better extend the life of the laser head.
Color plate most of the recording capacity are all standard size, it features a burning plane away from the traditional gold, blue, green, white these types of conventional color was black, brown, yellow, red, purple, dark blue, dark green and other colors to burn a disc has a unique personality.
Especially the black discs are a lot of computer enthusiasts of all ages, that the use of the works of black disc burning out enough COOL.
Some say a different color disc has its own different characteristics, and some, such as red and green can improve the effect of CD machines to read, and some, such as black can burn the contents of the preservation of stability in a long time, but this is not yet recognized third party authority.
Most computer enthusiasts to purchase a beautiful color palette are directed at go. The use of phthalocyanine dye in the disc can show any color, so this is actually the color disc itself is the phthalocyanine dye used in the platinum disk of our common dye is the same. While the reflector most of the problems in view of the cost or the use of silver reflective layer.
Merely described above, different color discs, just some simple description, but to satisfy those who like inquisitive, burning studying the friend request, we will burn a disc on the principle of dye to achieve on some of the content in the future.
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