08.20.2004 08:00 AM
CDs show signs of aging

Several reports are indicating that the CD might not be as robust a long-term storage format as once thought.

While CDs are subject to scratches and nicks in their metal plating that can render them useless, other chemical processes can affect a CD's playability. Eleven years ago, thousands of compact discs in the UK reportedly became unplayable after they changed color from silver to gold in a process known as "bronzing," a reaction between the CD's lacquer and chemicals within the cardboard cases that housed them at the time. However, two months later, French-based CD manufacturer PDO said all affected discs had been made in the late 1980s at its plant in Blackburn, Lancashire, which had used a silver coating on its discs instead of the standard gold.

Other problems have become widespread, if not common. If the lacquer covering fails to evenly cover the disc's edge, air can penetrate and oxidize the aluminum. While such faults are relatively few and far between, their occurrence with a master residing on a CD could be costly. As CDs enter the realm of a cheaply made commodity, the best advice for professional users is to choose name brands and make multiple copies of every stage of a project.

Back to the top

Post New Comment
If you are already a member, or would like to receive email alerts as new comments are
made, please login or register.

Enter the code shown above:

(Note: If you cannot read the numbers in the above
image, reload the page to generate a new one.)

No Comments Found

Tuesday 03:07 PM
WMUR-TV Says FAA Drone Rules Preclude ENG
The FAA’s current rules and proposed ban on flight over people, requirement of visual line of sight and restriction on nighttime flying, effectively prohibit broadcasters from using UAS for newsgathering. ~ WMUR-TV General Manager Jeff Bartlett

D. Pagan Communications /   Friday 10:35 AM
Blue Line is Hot on the Trail of DPA Microphones
Clyne Media, Inc /   Thursday 09:51 PM
Focusrite Expands RedNet Range

Featured Articles
Discover TV Technology