Patent ID: 6205102
Filing Date: 2001-03-20
Classification: G11B

Abstract:
A method of recording marks representing data in an information layer of an optical information carrier comprising the steps of:moving the carrier with respect to a radiation beam so that linear writing speed varies during recording so that different portions of the same carrier are recorded at different linear writing speeds;writing a mark on the carrier by a sequence of one or more irradiation pulses, in which the last pulse in the sequence has a first power level;irradiation at a second power level lower than the first power level during a cooling period to allow the carrier to cool after writing the mark the duration of the cooling period depending on the linear writing speed and being equal or greater than 0.5 times the duration of a data clock period; andirradiating at a third power level higher than the second power level to provide an unmarked space between marks.