Optical reading or writing apparatus

Details Optical reading or writing apparatus Optical reading or writing apparatus

G - Physics

11

B

352/32.4

G11B 7/00 (2006.01) G11B 7/0037 (2006.01) G11B 7/095 (2006.01) G11B 17/34 (2006.01) G11B 23/50 (2006.01)

Patent

CA 1300749

ABSTRACT OF THE DISCLOSURE An information-carrying medium having the form of a disc is rotated around a central axis. The temperature of the disc is controlled by a temperature-adjusting element facing the surface of the disc.

564172

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