Method for overwriting information on optical disk medium

Details Method for overwriting information on optical disk medium Method for overwriting information on optical disk medium

G - Physics

11

B

G11B 7/00 (2006.01) G11B 7/006 (2006.01)

Patent

CA 2069088

2069088 9205545 PCTABS00011 There is described a method for recording information by thermally deforming an optical recording layer of an optical recording element, the optical recording layer having thereon an overcoat layer. The method comprising the step of erasing at the same time as recording. This step comprising recording said information with a laser beam that is varied between two power levels, a first low power level that is sufficient to erase any deformations that may already be in the recording layer and a second higher power level that is sufficient to form deformations corresponding to the information desired to be recorded.

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