Large-capacity-memory disk

Details Large-capacity-memory disk Large-capacity-memory disk

B - Operations, Transporting

29

D

402/511, 352/32.

B29D 17/00 (2006.01) C08F 220/14 (2006.01)

Patent

CA 1232100

LARGE-CAPACITY-MEMORY DISK ABSTRACT OF THE DISCLOSURE In a large capacity memory disk of the type in which data are read out by an optical system, the invention provides a large capacity memory disk characterized in that a methyl methacrylate copolymer consisting of 99 to 20 percent by weight methyl methacrylate and 1 to 80 percent by weight of a monomer copolymerizable with methyl methacrylate is used as the disk substrate.

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