The Processes Involved CD Manufacturing


The manufacturing of compact discs (CDs) is the process by which the typical CD is replicated in large quantities for general use. While the CD itself can be used for a variety of purposes including audio and data content, the materials that make up the physical composition of the CD remains largely unchanged. Due to the nature of the CD, the way that the disc itself is created must be performed properly and with great care. If it is not made in the right environment and with the right materials, the quality of the data can be damaged and the disc will ultimately become useless.

The Process
CD services, CD manufacturing and the actual data that the disc must contain all need to be considered when making or replicating a CD. The original disc is the glass master. This master disc must have a number of specifications including a particular diameter, thickness, flatness, surface roughness. Additionally, it must be free from defects.

Once this glass disc has been created, it must be polished. Dirt is removed from the device using an electrostatic machine prior to polishing.Once the surface is completely clean, it can be buffed to the desired smoothness.At this time, the coating layer must be applied to the glass.While the disc is spinning, an adhesive is applied to the disc to bond it with the photosensitive coating.Next is the most important process of the creation.The data is transferred to the device using a laser beam recording device.The data is transferred as a high frequency signal and recorded into the disc.Once completed, the disc can be cleaned with a chemical solution that creates the lines that are visible on the back of the disc.As a result of the weakness of the glass, a metal mold is injected into the disc.This thickens the metal and creates a more stable product.

At this point in time, the disc is actually clear.The reflective layer that is common on CDs is now pressed onto the disc and is covered with an acrylic plastic layer to protect the surface from scratching.These materials make up the common compact disc.Perhaps the final step in the process is to add artwork to the disc as is the common trend for music artists or data discs that are purchased by consumers.CD manufacturing is a long and complex process, however it results in a quality end product.