Abstract: When a medium is located immediately under a distance sensor in printing, a controller of a printer acquires a distance from the medium to a first irradiator and a second irradiator in a direction orthogonal to a relative movement direction in which the medium moves relative to a liquid ejecting head, on the basis of a detection signal from the distance sensor. On the basis of the distance, the controller changes relative positions of irradiation ranges irradiated with light from the first irradiator and the second irradiator on the medium so as to define relative positions of the irradiation ranges such that the degree of overlapping between the irradiation ranges and the distance between the irradiation ranges do not increase significantly.

Abstract: When a medium is located immediately under a distance sensor in printing, a controller of a printer acquires a distance from the medium to a first irradiator and a second irradiator in a direction orthogonal to a relative movement direction in which the medium moves relative to a liquid ejecting head, on the basis of a detection signal from the distance sensor. On the basis of the distance, the controller changes relative positions of irradiation ranges irradiated with light from the first irradiator and the second irradiator on the medium so as to define relative positions of the irradiation ranges such that the degree of overlapping between the irradiation ranges and the distance between the irradiation ranges do not increase significantly.