|CD & DVD Care|
Breaking the Myth: CDs Can be Damaged and Can Deteriorate
How CDs/DVDs are Constructed
How a CD/DVD is Read
CD/DVD Damage Can Occur in Two Ways
1) Damage on the Read Side
When the laser in your CD or DVD player reads the digital information from the shiny side of the CD/DVD, it must see every microscopic "pit" of the digital code. Any dirt, fingerprints, or scratches that come between the laser and the information prevent the correct reading of the musical or video information. Sooner or later, a build up of dirt and/or scratches will take away from the musical or video experience. A large scratch may cause "skipping" or prevent playback entirely.
Preventing and Repairing Damage to the Read Side
2) Damage to the Aluminized Layer (the label side)
Any oxygen that penetrates to the aluminized layer can permanently damage your CD/DVDs. When oxygen combines with the aluminized layer, it forms aluminum oxide that is transparent and CANNOT reflect the laser beam. The lack of a reflected signal confuses the CD/DVD processor in such way that you may hear distortion or see a degradation of the video image.
The acrylic layer (on the label side) is very thin and any pinholes formed during manufacturing or any scratches in the acrylic can expose the aluminized layer to the damaging effects of oxygen.
DVDs that have read surfaces on both sides are highly unlikely to have this problem, because the aluminized layer is well protected by being sandwiched between two thick polycabonate layers.
Preventing Damage to the Aluminized Layer
DIGI-Last shields are made from a unique film that adheres to the CD/DVD label side without glues or adhesives and never becomes sticky or gummy.