Drying device and drying method

摘要

PROBLEM TO BE SOLVED: To accurately convey a print medium by a plurality of rotating bodies supporting the print medium from the lower side when injecting gas onto the print medium from above to dry the print medium. SOLUTION: A roller 74 and a nozzle 76u are arranged in a staggered manner, and the nozzle 76u injects air into a printing medium M between the two rollers 74 to print a printing medium from the upper ends of the two rollers 74. The print medium M is wound around the peripheral surfaces 741 of the two rollers 74 by bending M downward. On the peripheral surface 741 of the roller 74, a plurality of grooves G1 (first groove) extending parallel to the first direction D1 and a plurality of grooves G2 extending parallel to the groove G2 orthogonal to the groove G1 ( A second groove) is provided. The region R surrounded by the groove G1 and the groove G2 has a cylindrical surface shape. [Selection diagram] FIG. 7