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Replication - Few Things to Know

Date post: 07-Jan-2017
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CD Replication Few Things to know
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CD ReplicationFew Things to know

A couple of decades ago, the technology behind CD (Compact Disc) was first patented and then produced jointly by Sony and Philips.

Undoubtedly, the CD was a great gift to the users since its storage capacity exceeded the capacity of personal computer hard drives of

those times.

It was originally built to store and play sound recordings. However, soon it was adopted for various other formats, including, write-once,

rewritable, video CD and so on.

Even though nowadays the hard drive space has overtaken CDs by hundreds of times, it still has an amazing demand.

Which brings us to fulfilling such high demands of users by means of production of CDs on a large scale basis.

For example, distribution of movies and music is being mainly done through CDs or DVDs.

It requires production of hundreds of thousands of CDs with the same files in it, where copying of file and burning them would take too much of time. This is where CD Replication technique comes into play.

CD Replication is a physical production process where they are replicated in mass quantities by using a master copy as a source.

What is it?

Mostly people misunderstand CD Replication with Duplication. CD Duplication includes burning data and it writes sequentially while replication is different as the entire disc is written in one physical stamping operation.

How is it made?

CD Replication method is quite cost-effective as well as brisk and is

usually applied for production of large quantities of discs.

Since a high setup cost is associated with it, it may not be suitable for smaller orders. Generally CD duplication is done for smaller

orders.

First the plastic blank part of the disc is created using a hydraulic press where granules of raw polycarbonate are fed into the press.

Later on a metallic reflecting surface is applied.

The next part is preparing a glass master which uses a high-powered laser to create desired pits and lands. The glass master becomes the positive part of the CD surface.

The glass master is created from the original master and it’s pressed against a metal disc. It in effect punches tiny pits on the metal

surface.

This metal disc, also known as a die is the negative part of the CD. This die is sent to the press where the original physical image is

stamped at once on a blank CD.

The CDs afterwards are spinned rapidly and a small amount of lacquer is applied in the middle of it which spreads evenly.

Finally the stamper and the molded discs are tested for accuracy and quality check. If no defects are found then the CD is ready to be printed and packed.

Over the years the manufacturing process has got simplified by a great extent and the technology has evolved immensely.

Using the similar technology and introducing new ideas, DVDs were developed which had 6 times more storage capacity than a CD.

The Blu-Ray discs are an advanced version of DVDs which provide an even greater storage capacity.

Thank You

For More information Please Visit:- http://www.weprintdiscs.com/


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