<p>When an optical disc image formation device forms an image on an optical disc, it reads out information on the type of pigment used in a plotting area from information described in an information area of the optical disc. The optical disc image formation device reads out laser power intensity information corresponding to the information on the type of the pigment and the information on the maximum linear speed (speed-doubling number) and applies the laser light of the laser power intensity to form an image in the plotting area of the optical disc. Thus, the discoloration of the pigment in the plotting area is always saturated and accordingly, it is possible to form an image of a constant contrast in the plotting area of the optical disc.</p>
