FIELD: optical data carriers.
SUBSTANCE: mark is recorded using a pulse series. Recorded marks are erased by irradiating information layer by emission beam. series of pulses has recording pulses, having record power level, displacement power level and final power level. The latter is greater than erasing power level, and lower, than recording power level. Emission beam is pointed at level of final power immediately after final pulse of series. Immediately after period, during which emission beam is set at final power level, it is set to erasing power level.
EFFECT: decreased trembling.
2 cl, 8 dwg
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