Title:
OPTICAL DISK
Document Type and Number:
Japanese Patent JP2001283469
Kind Code:
A
Abstract:
To enable even a visually handicapped person to easily discriminate the front and the back surfaces of a disk.
The optical disk 1 is provided with a front and back discrimination area 4 for distinguishing the front and back surfaces of the disk in the inner periphery 5 of the disk 1, and a disk identification marks 9 for showing a kind of disk is provided on the surface where the front and back discrimination area 4 is.
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Inventors:
MURATA TOSHIKO
Application Number:
JP2000093361A
Publication Date:
October 12, 2001
Filing Date:
March 30, 2000
Export Citation:
Assignee:
VICTOR COMPANY OF JAPAN
International Classes:
G11B23/40; G11B7/24094; G11B7/24097; (IPC1-7): G11B7/24; G11B23/40