An image drawing device comprising: a laser light source unit configured to output laser light; a scanner unit configured to scan the laser light output from the laser light source unit by reflecting the laser light; a laser light source controller configured to control a laser light output timing of the laser light source unit and an output value of the laser light so that a drawing image based on input image data is generated by scanning of the scanner unit in a scanning region scanned by the scanner unit, and controls the laser light source unit to output characteristic detection laser light for detecting the output value of the laser light output from the laser light source unit; a scanner controller configured to control scanning of the scanner unit so that the scanner unit scans the laser light in a predetermined scanning region; and a characteristic detection controller configured to control the scanner controller so that the scanner unit temporarily scans a range beyond the predetermined scanning region when an output value of the laser light output from the laser light source unit is adjusted, control the laser light source controller to output the characteristic detection laser light during scanning outside of the predetermined scanning region, and adjust the output value of the laser light based on a detection result of the output value of the characteristic detection laser light, wherein the scanner controller is configured to control scanning of the scanner unit so that the scanner unit performs scanning in the predetermined scanning region with a predetermined scanning center as a scanning center, and the characteristic detection controller controls the scanner controller so that the scanner unit temporarily scans the range beyond the predetermined scanning region by shifting the scanning center of the scanner unit from the predetermined scanning center, when the output value of the laser light output from the laser light source unit is adjusted; characterized in that when the scanner unit performs scanning with a scanning center shifted from the predetermined scanning center as a scanning center, the characteristic detection controller controls the laser light source controller so that a position of a drawing image drawn when scanning is performed with the predetermined scanning center as the scanning center matches a position of a drawing image drawn when scanning is performed with a scanning center shifted from the predetermined scanning center as the scanning center. a laser light source unit configured to output laser light; a scanner unit configured to scan the laser light output from the laser light source unit by reflecting the laser light; a laser light source controller configured to control a laser light output timing of the laser light source unit and an output value of the laser light so that a drawing image based on input image data is generated by scanning of the scanner unit in a scanning region scanned by the scanner unit, and controls the laser light source unit to output characteristic detection laser light for detecting the output value of the laser light output from the laser light source unit; a scanner controller configured to control scanning of the scanner unit so that the scanner unit scans the laser light in a predetermined scanning region; and a characteristic detection controller configured to control the scanner controller so that the scanner unit temporarily scans a range beyond the predetermined scanning region when an output value of the laser light output from the laser light source unit is adjusted, control the laser light source controller to output the characteristic detection laser light during scanning outside of the predetermined scanning region, and adjust the output value of the laser light based on a detection result of the output value of the characteristic detection laser light, wherein the scanner controller is configured to control scanning of the scanner unit so that the scanner unit performs scanning in the predetermined scanning region with a predetermined scanning center as a scanning center, and the characteristic detection controller controls the scanner controller so that the scanner unit temporarily scans the range beyond the predetermined scanning region by shifting the scanning center of the scanner unit from the predetermined scanning center, when the output value of the laser light output from the laser light source unit is adjusted; characterized in that when the scanner unit performs scanning with a scanning center shifted from the predetermined scanning center as a scanning center, the characteristic detection controller controls the laser light source controller so that a position of a drawing image drawn when scanning is performed with the predetermined scanning center as the scanning center matches a position of a drawing image drawn when scanning is performed with a scanning center shifted from the predetermined scanning center as the scanning center.