Liquid ejecting apparatus and heating unit control method

A liquid ejecting apparatus comprising:

• a transport unit that transports a medium;
• a liquid ejecting unit that is capable of ejecting liquid to the medium;
• a heating unit that is capable of heating the medium;
• a detecting unit that is capable of simultaneously detecting energies from a plurality of detection areas, wherein the detecting unit is downstream of the liquid ejecting unit in a transport direction;
• and
• a controller that is capable of controlling the heating unit based on the energies collected by the detecting unit and that is capable of detecting whether the medium overlaps with at least one of the plurality of detection areas based on the energies collected by the detecting unit,
• wherein a number of detection areas that are used by the controller to control the heating unit is higher in a case where the medium is transported to a position where the medium overlaps with at least one of the plurality of detection areas than in a case where the medium has been transported to a position where the medium does not overlap with at least one of the plurality of detection areas, wherein the controller controls the heating unit based on an average of the energies detected from the plurality of detection areas.