A power adjustment method whereby {TAIL ~ a modulation index} is calculated from reproduced signals of {HEAD ~ patterns} recorded by irradiating light onto an optical information recording medium with a recording power varied and for which an optimum power of irradiation light is set up using the modulation index, the power adjustment method comprising: 
A power adjustment method whereby { TAIL ~ a modulation index } is calculated from reproduced signals of { HEAD ~ patterns } recorded by irradiating light onto an optical information recording medium with a recording power varied and for which an optimum power of irradiation light is set up using the modulation index , the power adjustment method comprising :
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH