Protuberant optical recording medium

Details Protuberant optical recording medium Protuberant optical recording medium

G - Physics

11

B

314/3, 352/32.4

G11B 7/00 (2006.01) G11B 7/243 (2006.01) G11B 25/04 (2006.01)

Patent

CA 1185697

ABSTRACT An optical recording medium as shown in Figure 3 containing a light-absorbing film 32 of refractory material less than 60 nm thick and which is sufficiently plastic to allow plastic information upon localized heating is provided for exposure to a focused laser beam 20, whereupon localized heating of the light-absorbing film enables information storage in the form of localized protuberances 38 in the heated areas which can subsequently be optically detected and can be used as a master information record for replication purposes.

396219

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