G - Physics – 11 – B
Patent
G - Physics
11
B
352/32.4
G11B 7/00 (2006.01) G11B 7/244 (2006.01) G11B 7/26 (2006.01)
Patent
CA 1155548
OPTICAL RECORDING MEDIUM AND METHOD FOR ITS FORMATION ABSTRACT OF THE DISCLOSURE An improved information recording medium having a special nitrated dye recording layer. Information can be recorded in the medium by scanning the recording layer with an intensity- modulated beam of light, to selectively heat portions of the layer and thereby cause correspon- ding minute explosions in it, yielding a sequence of spaced microscopic pits representative of the information. The exploded material contains primarily non-condensable gases so that very little, if any, non-gaseous residue is deposited on surrounding portions of the medium, and the information is thereby recorded with an improved signal-to-noise ratio.
386439
Michalchik Michael
Wilkinson Richard L.
Discovision Associates
Gowling Lafleur Henderson Llp
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