[Object] To provide an inkjet printer that can reduce generation of upward or downward ridges with respect to Z-folded continuous paper as much as possible.
[Solution] The present invention is an inkjet printer (100) that carries out printing by an inkjet method with respect to long continuous paper (X) provided with a perforation at every page break and provided with marginal punch holes in both sides, the inkjet printer (100) having: a paper feeding unit 1 that disposes the Z-folded continuous paper (X); a first pull roller (2a) and a second pull roller (2b) for conveying the continuous paper (X); a pin tractor (3) for positioning the continuous paper (X); a speed-variable motor (4) for applying tension to the continuous paper (X); a printing unit (5) that carries out printing on the continuous paper (X) by a print head; and a discharging unit (6) that Z-folds and discharges the continuous paper (X) by a folding machine (61); wherein the pin tractor (3) has pins and can carry out positioning of the continuous paper (X) by inserting the pins in the marginal punch holes; a holding skid for sandwiching the continuous paper (X) abuts the first pull roller (2a), and a driving motor is attached to the first pull roller (2a); a holding skid for sandwiching the continuous paper (X) abuts the second pull roller (2b), and the speed-variable motor (4) is attached to the second pull roller (2b); and the speed-variable motor (4) applies the tension to the continuous paper (X) by changing a rotating speed of the second pull roller (2b).