Printer and printing method

A printing method of performing inkjet printing for a medium, comprising:

• ejecting ink from an inkjet head in an inkjet scheme;
• and
• transporting, by a medium transport unit, the medium in a preset transport direction while adsorbing the medium by electrostatic adsorption,
• wherein the medium transport unit has
• an adsorption member that electrostatically adsorbs the medium due to charging of at least one portion of the adsorption member and
• a charging member that charges at least a portion of the adsorption member,
• the charging member has
• a unipolar charging section that charges a head facing region, which is a region facing the inkjet head, in the adsorption member and
• a bipolar charging section that charges a non-facing region that is at least a portion of a portion other than the head facing region in the adsorption member,
• the unipolar charging section charges the head facing region such that a region facing the inkjet head on a surface of the medium is charged to either a positive or a negative polarity, and
• the bipolar charging section charges the non-facing region such that a portion charged by the bipolar charging section on the surface of the medium is charged to bipolarity including a positively charged portion and a negatively charged portion.