lacquer is applied over the gold. These translucent and gold layers allow the recorded pits and lands to be read back after recording. CARING FOR COMPACT DISCS A compact disc is a remarkably reliable long-term storage media (conservative expectations place the life estimates of a current CD at about 100 years. However, the longevity of a CD is affected by its storage and handling—a faulty CD can cause file and data errors that you might otherwise interpret as a defect in the drive itself. Here are some tips to help protect
and maintain the disc itself Don’t bend the disc Polycarbonate
is a forgiving material, but you risk cracking or snapping (and thus ruining) the disc.
-
Don’t heat the disk Remember, the disc is plastic. Leaving it by a heater or on the dashboard of your car might cause it to melt.
- Don’t scratch the disc Laser wavelengths have a tendency to look past minor scratches, but a major scratch can cause problems. Be especially careful of circular scratches (one that follows the spiral track. A circular scratch can easily wipe
out entire segments of data, which would be unrecoverable.
- Don’t use chemicals on the disc Chemicals
containing solvents, such as ammonia, benzene, acetone,
carbon tetrachloride, or chlorinated cleaners, can easily damage the disc’s plastic surface.
Share with your friends: