INFORMATION STORAGE DEVICE

摘要

PCT No. PCT/SU87/00119 Sec. 371 Date Aug. 12, 1988 Sec. 102(e) Date Aug. 12, 1988 PCT Filed Oct. 27, 1987 PCT Pub. No. WO88/04822 PCT Pub. Date Jun. 30, 1988.An information storage device, has a container and at least two identical optical information carriers arranged coaxially inside the container and adapted for independent rotation in relation to each other. Each optical information carrier has a hollow cylindrical base made of a material transparent for laser radiation and a recording layer applied on this cylindrical base.