An image recording device includes: a support member for supporting a sheet-shaped print medium; a print head that moves between a print position, at which printing of an image onto the print medium is executed, and a retracted position, farther away from the support member than the print position, while also facing the support member, with the print medium interposed therebetween; a tension adjustment unit for adjusting the tension of the print medium being supported by the support member; and a control unit whereby printing is executed by the print head having been positioned at the print position while the tension of the print medium is adjusted to a print tension by the tension adjustment unit, whereas the print head is positioned at the retracted position when the tension of the print medium is being altered by the tension adjustment unit.