informationsaufzeichnungsverfahren, informationsaufzeichnungsvorrichtung, optical informationsaufzeichnungsmedium, program for recording information, and storage medium

摘要

An information recording method including first irradiating an optical information recording medium (1) containing a phase change recording layer (23) on a substrate (21) having a guide groove with continuous light of a laser beam having an erase power level Pe to determine a transition linear velocity Vo defined as a minimum linear velocity above which the following relationship is satisfied: Rr = Ra/Rb 1, wherein Rr represents a reflection light intensity ratio, and Ra and Rb represent a reflection light intensity measured after and before the irradiation of the optical information recording medium (1) with the continuous light, respectively, and then second irradiating the optical information recording medium (1) with a laser beam, which is modulated by a pulse width modulation (PWM) system to have at least a recording power level Pw and the erase power level Pe, to form marks and spaces therebetween having a length of nT in the optical information recording medium (1) by causing a phase change in the phase change recording layer (21), wherein n represents a natural number and T represents a basic clock cycle.