OPTICAL DISK

摘要

An optical disk for use as the recording medium of an optical disk drive provided, on the other side of a disk substrate (110), with a print label film (130) having a film quality and a film structure substantially common to those of a transparent protective film (120) formed on a recording layer (112) provided on one side of the disc substrate. The print label film is composed of a synthetic resin film principally comprising polycarbonate similarly to the transparent protective film, and it is printed on the disk substrate by screen printing, or the like. Since the optical disk has common film quality and film structure on the opposite sides, occurrence of skew due to warp caused by asymmetry of the structure in the thickness direction of the optical disk can be controlled. The optical disk is provided with a function for indicating the content of recorded information by the print label film provided on the other side of the disc substrate.