The invention provides a printer and a printing method. In the printer, a medium is conveyed more properly. Disclosed is the printer (10) that performs inkjet printing, and the printer includes an inkjet head (12) and a medium transport unit (14). In this printer, the medium transport unit (14) has an electrostatic adsorption belt (102) which is an adsorption member that electrostatically adsorbsthe medium (50) and a charging member (104) that charges at least a portion of the electrostatic adsorption belt (102). The charging member (104) has a unipolar charging section that charges a head facing region of the electrostatic adsorption belt (102) and a bipolar charging section that charges a non-facing region (B) that is at least a portion other than the head facing region of the electrostatic adsorption belt (102). The unipolar charging section charges the head facing region such that a region facing the inkjet head (12) on the surface of the medium (50) is charged to either a positive or negative polarity, and the bipolar charging section bipolarly charges the non-facing region.