Patent ID: 8646900

Claim:
A printing device, comprising a head having a nozzle row in which a plurality of nozzles for ejecting ink that hardens under emission of light are arranged in a predetermined direction, the head being adapted for ejecting the ink from the nozzle row onto a medium that undergoes a relative movement in an intersecting direction that intersects the predetermined direction, thereby forming in the predetermined direction a plurality of dot lines, in which a plurality of dots are arranged in the intersecting direction; a light source for emitting light onto the dots formed on the medium by the head; an adjusting part for adjusting a distance between the head and the light source; a detecting part for detecting a dot width, in the predetermined direction, of a given dot line; and a memory part for storing correction data, in which a concentration correction value is defined for every dot line, and a dot width, in the predetermined direction, of the given dot line in relation to when the correction data was created; wherein the distance between the head and the light source is adjusted so that the dot width detected by the detecting part becomes equal to the dot width stored in the memory part.