Recording method for a phase-change optical recording medium

Abstract

The present invention provides a recording method for a phase-change optical recording medium. The recording method of the present invention contains the step of irradiating an electromagnetic wave having a multipulse pattern so as to perform recording on a phase-change optical recording medium containing a phase-change recording layer. This method is characterised in that a starting time of a front pulse of the multipulse pattern delays 0.5 T to 1.25 T from a starting point of the first reference clock relative to the recording mark, where T is a reference clock of the multipulse pattern.

1 - 20 . (canceled)  
   
   
       21 . An optical recording method, comprising the steps of: 
 irradiating a pulsed electromagnetic wave on a phase-change optical recording medium, said recording medium having a phase-change recording layer to record a mark,    wherein a waveform of the irradiated electromagnetic wave has a pulse shape having an irradiating power and an irradiating period;    wherein the irradiating power of the pulsed electromagnetic wave has a peak power, erase power, and bias power;    wherein the irradiating period of the pulsed electromagnetic wave has an irradiating period of the peak power and an irradiating period of the bias power; and    wherein an irradiation of the pulsed electromagnetic wave as a rear heating pulse is followed by an irradiation of the pulsed electromagnetic wave of the erase power, irradiation of the pulsed electromagnetic wave as a rear heating pulse being a trailing pulse of the peak power in recording the mark.    
   
   
       22 . The optical recording method according to  claim 21 , wherein the irradiation of the pulsed electromagnetic wave as a rear heating pulse is followed by substantially no irradiation of a rear cooling pulse as a pulse of the bias power, the irradiation of the pulsed electromagnetic wave as a rear heating pulse being further followed by the irradiation of a pulsed electromagnetic wave of the erase power.  
   
   
       23 . The optical recording method according to  claim 21 , wherein a recording of a mark by irradiating the pulsed electromagnetic wave is performed at a recording linear velocity between an intermediate linear velocity and a maximum linear velocity.