Glass Mastering
After premastering phase was completed, then begin entering the next phase of the glass mastering. This is where it is master data. Was said in replicating a master disc is a piece stamper. Stamper is that will be used to print a replica of a pit on each disc fragments.
To create a stamper requires four stages, namely:
Stage 1: Preparation At this stage, do some preparation. First of all, that is preparing a piece called a master glass (plastic glass) that previously had been cleaned using a water ionize first. Then, the pieces are coated with a layer of so-called photo-resist layer 120 microns thick.
Stage 2: Print a pit with a laser beam The pit is where data is stored. Pit obtained from the results of the laser photo-resist layer. Laser beam used some blue and some are colored violet. Meanwhile, the laser beam itself to work based on data obtained from previous premastering stage. Along with the laser firing, the pieces rotate the disc will move the data to compensate for the right light is fired at the right track.
If you want the results of replication that can not be duplicated or copied, the protection process will be done at this point. However, the source of the protection itself regardless of its form, whether in the form of code or data pengenkripsian all from premastering stage before.
Stage 3: Metalisasi After the pit produced by a laser shot, the shot is given a layer of metal layers. Metal layers used materials derived from nickel. This coating process itself will not affect the layer beneath the plastic glass.
Stage 4: Elektroforming This is the stage of its manufacture stamper itself. Having completed a master glass coated with nickel, then making stamper was made. Stamper itself is a mold that will be used to print a piece disc replication. Stamper-making comes from mastering the glass has been coated with nickel. If the stamper has been completed, the stamper is ready for use.
Replication After mastering stage is completed, the next step alah replication phase. At this stage, there are some differences depending on the type of the disc fragments.
CD To replicate the CD process is the fastest. First of all, each piece is made from polycarbon materials printed with the stamper has a first. Then given a printout aluminum coating to reflect light (laser ray later). After that, the aluminum layer provided protective palisan again. If the final coating process is complete, then the CDs ready to be labeled.
DVD In replicating the DVDs, there is a process that is not owned by a CD of the bonding or union. Bonding on the DVD varies according to the type of each DVD.
For DVD-5, the bonding is between the polycarbon pieces have been printed and provided with pieces of aluminum that is not given polycarbon layer of aluminum. After that, a new protective coating process and labeling.
For DVD-10, the process of bonding between the two pieces performed polycarbon which has been printed and given layer of aluminum.
Actually, the DVD-9, the process of bonding is the same as the DVD-10. Only, the difference lies in the metal layer. If the DVD-10 both use a layer of aluminum, then the DVD-9 is one that uses gold or silicon layer.
Which is the reason why the third DVD has bonding process different is the composition of the DVD itself.
Finishing This is the final stage in the process of replication. There are two things that usually happen in the finishing stages. The first is a CD label printing at the very top. Then the second one is laying a barcode or other item code that is both can be done at the finishing stage is carried out and permanent nature.
Both are very different things. If the label making process similar to the process of printing images with a printer, then the coding process or the goods are not the same barcode, so peletakannya.
Label According to the diameter, there are two options for labeling on the CD. First of diameter 38 mm to 117 mm, while the second option is more comprehensive, that is from the diameter of 21 mm to 117 mm. Which is more often done on the labeling diameter 38 mm to 117 mm.
On the DVD is not much different except the DVD which is 10 double-sided. Sometimes there is also labeling the beginning of the diameter of 43.8 mm to 117 mm.
To create a label image are five colors, which consists of white as a base and four other colors are primary colors used for printing, the CMYK colors (blue, red, yellow, and black).
Making labels can also be done separately from the process of replication, but can also be continued dilakkan. If done separately, then you must have a special printer to create labels CD / DVD. Printer to make labels already sold on the market. Label printing process itself does not take a long time. In the 70th minute to reach the mold pieces.
Barcode Barcode is placed on an area often called a Burst Cutting Area (BCA). That is an area located on the chip between the middle ring with the end of the data storage area in a diameter of 22.3 mm to 23.5 mm.
Usually this barcode contains information about the serial number CD or DVD. However, do not close the possibility to contain anything else. As an example on the CD edition of PC Media magazine writing. Whatever form the information contained in the barcode, size is only about 12 bytes to 188 bytes.
Making the barcode can be done in two ways. The first was at the time of mastering done. Barcode printing, so will the contents along with the printing of CD / DVD.
Or making barcodes and serial numbers can also be done at the time of finishing by using a tool called Yag Laser. In this way, ditembakan Barcode information by laser beam on each piece that is so. And usually these barcodes can be read, especially by the DVD Drive.
Currently, in Indonesia alone there are already some companies are able to produce a CD / DVD this way. Even one of them is that you have today from a PC Media magazine is also the result of replication rather than duplication.
This is indicated by the basic color PC CD Media and logo and edition number of PC Media at the bottom. Therefore, the CD of PC Media is more durable than a CD copy of what you have. Replication CD / DVD not only be made for who want to produce their own software such as PC Media, but also can be done by you who want to print or film recordings in large quantities.
To replicate a CD / DVD, you should not buy equipment such as duplicating a CD / DVD replication machinery because prices are still too expensive. In addition, physical form is still very large. Therefore, for those who want to replicate the CD / DVD printing services should use the CD / DVD which is now much in Jakarta. Because it is more effective than buying your own devices. (Source: PCMedia, Fadilla Mutiarawati)
