Laser recording device and recording method

A laser recording device that performs recording by irradiating a recording medium with laser light, the recording medium including:

• a plurality of thermal recording layers including thermal materials with different color development threshold temperatures, stacked in an ascending order of the threshold temperatures of the thermal materials from a surface, and irradiated with the laser light;
• and an intermediate layer provided between the thermal recording layers for thermal insulation and thermal conduction, the laser recording device comprising:
• a controller that irradiates the thermal recording layers with the laser light for recording such that the higher the threshold temperature of the thermal recording layers, the relatively higher a power density of the laser light irradiating the thermal recording layers, and that the lower the threshold temperature of the thermal recording layers, the effectively longer a length of irradiation time for the thermal recording layers, wherein
• the controller repeatedly scans the thermal recording layers with the laser light a plurality of times for recording on each recording position, and sets a waiting time to a length of time from a previous scanning to a current scanning with the laser light at a same recording position such that the lower the threshold temperature of the thermal recording layers, the longer the waiting time is set.