Patent ID: 6438085
Filing Date: 2002-08-20
Classification: G11B

Abstract:
A method for recording on an optical recording medium including a substrate and a phase change recording layer on the substrate, comprising:forming at least one recording mark by a pulse train used as a recording waveform for laser beam modulation during a formation of said at least one recording mark, said pulse train including at least one unit pulse comprising an upward pulse and a subsequent downward pulse and satisfying the following relation: 0.25&lE;(TclH/TclL)Ã—n&lE;1.25, â€ƒwhere TclH is a width of a last downward pulse in the pulse train standardized by a reciprocal of a linear velocity V, TclL is a width of a last downward pulse in the pulse train standardized by a reciprocal of a linear velocity of V/n, and n is a real number greater than 1.