Data reliability evaluation of flexible optical disk system using accelerated test of dust density

The data reliability of a 90-mm flexible optical disk system with a phase-change rewritable disk is studied through accelerated tests of dust density for fabrication of low-cost, reliable flexible optical disks. A simple dust generator composed of a small loud speaker creates an extremely dusty environment in a chamber, with a dust density several times higher than in a normal environment. These accelerated tests indicate that a flexible optical disk contained in a semisealed cartridge will show no change in the number of errors over several years in a normal environment.