A printing device includes a device main body that has a feeding unit for feeding a recording medium and a printing section for printing by ejecting ink from a liquid drop ejecting head onto the recording medium that has been fed by activation of the feeding unit, and a heating unit disposed on a downstream side in a feed direction of the recording medium with respect to the device main body. The heating unit has a medium passage through which the recording medium after printing passes, a heating unit provided with a heat generator disposed in an intermediate position of the medium passage to heat the recording medium after printing with heat generated by the heat generator, and an air discharging unit for forcibly discharging air in the medium passage.