Saturday 14 November 2009

Duplication Versus Replication For Cd And Dvd: What's The Difference?

There are two ways a copy of a CD or DVD. Information can be burned onto a blank CD / DVD-R, this method is duplication. Information can also be added during the CD / DVD manufacturing process, this method is called replication. Understanding the differences is important in determining which process is best for your project. A double CD / DVD is not only made by a different process than a replicated CD / DVD, but the actual product is different. After the duplication process is complete, the final product is a CD-R or DVD-R. Replication CD stampers for producing CD-ROMs. (ROM means Read Only Memory). The final product in the DVD replication process is a DVD-5, DVD 9, DVD-10 or DVD 18. The CD duplication process is similar to burning a CD / DVD on your personal computer. A CD / DVD duplicator extracts data from the master disc and writes it to a blank disc. The difference between burning multiple CD / DVD-R on a double-burning facility and a desktop computer that is doubling the facility burns hundreds at a time on the towers that are linked. Each tower contains several CD / DVD trays so many copies can be made simultaneously. After all data is written to the blank CD / DVD-R, the information is checked against the master, and the process is complete. CD / DVD replicates, on the other hand, created during the manufacturing process. In other words, media such as a CD / DVD-R is not before the trial begins. Before the replication process is launched, the client is carefully evaluated for master data corruption. Then a glass master with relevant information from the customer supplied seized. Replication begins when a flawless glass master is assured. The glass master is used to develop a pestle. The stamper in turn, is loaded into an injection molding machine that makes CD / DVD replicates. The quality of the CD replication hinges on the quality of the data of the glass master. With each successive step, consistent quality and accuracy checks to ensure each drive is an exact replica or clone of the original. A micro-thin layer of aluminum is applied to the polycarbonate disc. It is then lacquered for additional protection and printed before packaging. The client supplied master CD-R and DVD-R duplication is the same, a CD / DVD-R. CD-ROM replication also requires a CD-R master. While a DVD-R is acceptable for DVD replication, most facilities prefer to work from a client supplied DLT or Digital Linear Tape. Advantages of CD / DVD duplication 1. The standard turn-time is 2-3 days, even for runs to 5000 units. 2. Digital full color printing is available with no pre-press costs. Disadvantages of CD / DVD duplication 1. The cost per unit is higher than the double replication. 2. DVDs can have up to 2 layers of information on each side of the media. DVD-R duplication is 1 layer of information about the entire DVD. 3. Most duplication facilities are small and are often limited to the installation of the media hand in the container due to the low volume runs Advantages of CD / DVD replication 1. The unit costs are lower than duplicated discs. 2. Both offset and screen printing is available for replicated discs. 3. Replicated DVDs may contain 1 layer (DVD-5) information, 2 layers on one side (DVD-9), 1 layer on each side (DVD-10) or 2 layers on each side (DVD-18). Many replication facilities are not set to DVD-18 replication. 4. Most replication facilities, due to their high volume capacity run, can auto-mount discs in jewel cases, paper / Tyvek sleeves, Amaray cases, or cardboard sleeves. Disadvantages of CD / DVD replication 1. The standard turn time is 7-10 days, longer runs for more than 100,000 units. Standard double turn times are 2-3 days. 2. Most facilities have a minimum order of 1,000 units. Are there notable differences? Both CD duplication and CD replication of data from the original in the same way. In terms of production, however, this is where the similarities end. The end product of a process performs the same way, although with different order, depending on whether the disks are digital, screened or offset printed. About What special circumstances? The objectives of each project is unique. Contact our customer service to determine which process best fits the requirements of your project.

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